/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_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:56:21,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:56:21,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:56:21,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:56:21,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:56:21,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:56:21,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:56:21,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:56:21,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:56:21,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:56:21,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:56:21,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:56:21,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:56:21,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:56:21,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:56:21,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:56:21,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:56:21,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:56:21,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:56:21,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:56:21,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:56:21,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:56:21,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:56:21,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:56:21,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:56:21,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:56:21,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:56:21,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:56:21,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:56:21,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:56:21,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:56:21,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:56:21,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:56:21,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:56:21,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:56:21,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:56:21,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:56:21,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:56:21,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:56:21,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:56:21,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:56:21,721 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 06:56:21,734 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:56:21,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:56:21,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:56:21,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:56:21,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:56:21,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:56:21,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:56:21,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:56:21,735 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:56:21,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:56:21,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:56:21,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:56:21,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:56:21,737 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:56:21,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:56:21,738 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:56:21,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:56:21,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:56:21,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:56:21,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:56:21,905 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:56:21,905 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:56:21,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:56:22,915 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:56:23,120 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:56:23,121 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:56:23,133 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d29ffbb3/3968ddd577fe48bba8dcc8a40d489128/FLAG179f91b81 [2023-04-02 06:56:23,144 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d29ffbb3/3968ddd577fe48bba8dcc8a40d489128 [2023-04-02 06:56:23,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:56:23,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:56:23,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:56:23,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:56:23,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:56:23,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:23,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e740cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23, skipping insertion in model container [2023-04-02 06:56:23,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:23,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:56:23,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:56:23,543 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_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[26790,26803] [2023-04-02 06:56:23,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:56:23,688 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:56:23,847 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_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[26790,26803] [2023-04-02 06:56:23,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:56:23,947 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:56:23,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23 WrapperNode [2023-04-02 06:56:23,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:56:23,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:56:23,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:56:23,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:56:23,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:23,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:23,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:23,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:24,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:24,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:24,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:24,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:24,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:56:24,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:56:24,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:56:24,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:56:24,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (1/1) ... [2023-04-02 06:56:24,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:56:24,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:56:24,105 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 06:56:24,111 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 06:56:24,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:56:24,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:56:24,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:56:24,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:56:24,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:56:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:56:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:56:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:56:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:56:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:56:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:56:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:56:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:56:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:56:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:56:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:56:24,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:56:24,327 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:56:24,328 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:56:25,443 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:56:25,456 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:56:25,456 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:56:25,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:56:25 BoogieIcfgContainer [2023-04-02 06:56:25,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:56:25,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:56:25,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:56:25,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:56:25,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:56:23" (1/3) ... [2023-04-02 06:56:25,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d32c11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:56:25, skipping insertion in model container [2023-04-02 06:56:25,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:56:23" (2/3) ... [2023-04-02 06:56:25,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d32c11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:56:25, skipping insertion in model container [2023-04-02 06:56:25,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:56:25" (3/3) ... [2023-04-02 06:56:25,467 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:56:25,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:56:25,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:56:25,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:56:25,564 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;@3844944e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:56:25,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:56:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 659 states, 646 states have (on average 1.7817337461300309) internal successors, (1151), 654 states have internal predecessors, (1151), 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 06:56:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-04-02 06:56:25,597 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:25,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:25,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:25,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1912240510, now seen corresponding path program 1 times [2023-04-02 06:56:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:25,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76791822] [2023-04-02 06:56:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:26,993 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 06:56:26,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:26,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76791822] [2023-04-02 06:56:26,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76791822] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:26,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:26,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:56:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520652907] [2023-04-02 06:56:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:26,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:56:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:56:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:56:27,029 INFO L87 Difference]: Start difference. First operand has 659 states, 646 states have (on average 1.7817337461300309) internal successors, (1151), 654 states have internal predecessors, (1151), 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 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 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 06:56:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:56:30,464 INFO L93 Difference]: Finished difference Result 1931 states and 3392 transitions. [2023-04-02 06:56:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:56:30,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 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 254 [2023-04-02 06:56:30,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:56:30,485 INFO L225 Difference]: With dead ends: 1931 [2023-04-02 06:56:30,486 INFO L226 Difference]: Without dead ends: 1263 [2023-04-02 06:56:30,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:56:30,499 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 2689 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2689 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:56:30,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2689 Valid, 2793 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 06:56:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-04-02 06:56:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1261. [2023-04-02 06:56:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1257 states have (on average 1.5544948289578362) internal successors, (1954), 1257 states have internal predecessors, (1954), 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 06:56:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1957 transitions. [2023-04-02 06:56:30,632 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1957 transitions. Word has length 254 [2023-04-02 06:56:30,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:30,635 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1957 transitions. [2023-04-02 06:56:30,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 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 06:56:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1957 transitions. [2023-04-02 06:56:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-04-02 06:56:30,640 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:30,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:30,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:56:30,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:30,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash 689365557, now seen corresponding path program 1 times [2023-04-02 06:56:30,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:30,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73621238] [2023-04-02 06:56:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:30,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:31,043 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 06:56:31,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:31,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73621238] [2023-04-02 06:56:31,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73621238] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:31,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:31,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:56:31,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179846058] [2023-04-02 06:56:31,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:31,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:56:31,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:56:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:31,046 INFO L87 Difference]: Start difference. First operand 1261 states and 1957 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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 06:56:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:56:34,389 INFO L93 Difference]: Finished difference Result 3738 states and 5800 transitions. [2023-04-02 06:56:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:56:34,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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 256 [2023-04-02 06:56:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:56:34,398 INFO L225 Difference]: With dead ends: 3738 [2023-04-02 06:56:34,401 INFO L226 Difference]: Without dead ends: 2502 [2023-04-02 06:56:34,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:34,411 INFO L413 NwaCegarLoop]: 1988 mSDtfsCounter, 990 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:56:34,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 2984 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 06:56:34,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2023-04-02 06:56:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1274. [2023-04-02 06:56:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1270 states have (on average 1.5535433070866143) internal successors, (1973), 1270 states have internal predecessors, (1973), 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 06:56:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1976 transitions. [2023-04-02 06:56:34,494 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1976 transitions. Word has length 256 [2023-04-02 06:56:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:34,494 INFO L495 AbstractCegarLoop]: Abstraction has 1274 states and 1976 transitions. [2023-04-02 06:56:34,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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 06:56:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1976 transitions. [2023-04-02 06:56:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-04-02 06:56:34,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:34,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:34,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:56:34,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:34,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash -841505040, now seen corresponding path program 1 times [2023-04-02 06:56:34,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:34,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061379989] [2023-04-02 06:56:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:34,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:34,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:34,965 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 06:56:34,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:34,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061379989] [2023-04-02 06:56:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061379989] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:34,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:56:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78548013] [2023-04-02 06:56:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:34,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:56:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:56:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:34,969 INFO L87 Difference]: Start difference. First operand 1274 states and 1976 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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 06:56:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:56:38,397 INFO L93 Difference]: Finished difference Result 3623 states and 5591 transitions. [2023-04-02 06:56:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:56:38,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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 256 [2023-04-02 06:56:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:56:38,405 INFO L225 Difference]: With dead ends: 3623 [2023-04-02 06:56:38,405 INFO L226 Difference]: Without dead ends: 2491 [2023-04-02 06:56:38,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:38,408 INFO L413 NwaCegarLoop]: 1947 mSDtfsCounter, 867 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:56:38,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2907 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 06:56:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2023-04-02 06:56:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2489. [2023-04-02 06:56:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2485 states have (on average 1.545271629778672) internal successors, (3840), 2485 states have internal predecessors, (3840), 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 06:56:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3843 transitions. [2023-04-02 06:56:38,511 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3843 transitions. Word has length 256 [2023-04-02 06:56:38,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:38,512 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3843 transitions. [2023-04-02 06:56:38,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 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 06:56:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3843 transitions. [2023-04-02 06:56:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-04-02 06:56:38,516 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:38,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:38,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:56:38,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:38,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash -301016510, now seen corresponding path program 1 times [2023-04-02 06:56:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296676552] [2023-04-02 06:56:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:38,948 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 06:56:38,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296676552] [2023-04-02 06:56:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296676552] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:38,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:38,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:56:38,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811922756] [2023-04-02 06:56:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:38,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:56:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:56:38,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:38,951 INFO L87 Difference]: Start difference. First operand 2489 states and 3843 transitions. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 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 06:56:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:56:42,314 INFO L93 Difference]: Finished difference Result 7354 states and 11342 transitions. [2023-04-02 06:56:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:56:42,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 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 257 [2023-04-02 06:56:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:56:42,328 INFO L225 Difference]: With dead ends: 7354 [2023-04-02 06:56:42,329 INFO L226 Difference]: Without dead ends: 4925 [2023-04-02 06:56:42,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:42,333 INFO L413 NwaCegarLoop]: 1987 mSDtfsCounter, 985 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:56:42,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 2983 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 06:56:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2023-04-02 06:56:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 2507. [2023-04-02 06:56:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2503 states have (on average 1.5425489412704754) internal successors, (3861), 2503 states have internal predecessors, (3861), 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 06:56:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3864 transitions. [2023-04-02 06:56:42,495 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3864 transitions. Word has length 257 [2023-04-02 06:56:42,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:42,496 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3864 transitions. [2023-04-02 06:56:42,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 3 states have internal predecessors, (254), 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 06:56:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3864 transitions. [2023-04-02 06:56:42,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-04-02 06:56:42,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:42,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:42,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:56:42,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:42,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:42,507 INFO L85 PathProgramCache]: Analyzing trace with hash 13045963, now seen corresponding path program 1 times [2023-04-02 06:56:42,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:42,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129610258] [2023-04-02 06:56:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:42,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:42,924 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 06:56:42,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:42,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129610258] [2023-04-02 06:56:42,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129610258] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:42,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:42,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:56:42,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521483059] [2023-04-02 06:56:42,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:42,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:56:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:42,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:56:42,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:42,926 INFO L87 Difference]: Start difference. First operand 2507 states and 3864 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 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 06:56:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:56:46,336 INFO L93 Difference]: Finished difference Result 7086 states and 10857 transitions. [2023-04-02 06:56:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:56:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 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 258 [2023-04-02 06:56:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:56:46,351 INFO L225 Difference]: With dead ends: 7086 [2023-04-02 06:56:46,351 INFO L226 Difference]: Without dead ends: 4824 [2023-04-02 06:56:46,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:46,355 INFO L413 NwaCegarLoop]: 1954 mSDtfsCounter, 861 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:56:46,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 2914 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 06:56:46,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2023-04-02 06:56:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4822. [2023-04-02 06:56:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4818 states have (on average 1.5303030303030303) internal successors, (7373), 4818 states have internal predecessors, (7373), 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 06:56:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 7376 transitions. [2023-04-02 06:56:46,595 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 7376 transitions. Word has length 258 [2023-04-02 06:56:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:46,596 INFO L495 AbstractCegarLoop]: Abstraction has 4822 states and 7376 transitions. [2023-04-02 06:56:46,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 3 states have internal predecessors, (255), 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 06:56:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 7376 transitions. [2023-04-02 06:56:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-04-02 06:56:46,604 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:46,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:46,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:56:46,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:46,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1110430056, now seen corresponding path program 1 times [2023-04-02 06:56:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:46,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374357741] [2023-04-02 06:56:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:47,301 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 06:56:47,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:47,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374357741] [2023-04-02 06:56:47,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374357741] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:47,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:47,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:56:47,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452596702] [2023-04-02 06:56:47,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:47,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:56:47,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:56:47,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:56:47,303 INFO L87 Difference]: Start difference. First operand 4822 states and 7376 transitions. Second operand has 6 states, 6 states have (on average 42.5) internal successors, (255), 5 states have internal predecessors, (255), 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 06:56:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:56:50,211 INFO L93 Difference]: Finished difference Result 13992 states and 21345 transitions. [2023-04-02 06:56:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:56:50,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 5 states have internal predecessors, (255), 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 258 [2023-04-02 06:56:50,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:56:50,238 INFO L225 Difference]: With dead ends: 13992 [2023-04-02 06:56:50,238 INFO L226 Difference]: Without dead ends: 9229 [2023-04-02 06:56:50,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:56:50,246 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1928 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:56:50,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 3323 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:56:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9229 states. [2023-04-02 06:56:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9229 to 9227. [2023-04-02 06:56:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9227 states, 9223 states have (on average 1.5146915320394665) internal successors, (13970), 9223 states have internal predecessors, (13970), 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 06:56:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9227 states to 9227 states and 13973 transitions. [2023-04-02 06:56:50,805 INFO L78 Accepts]: Start accepts. Automaton has 9227 states and 13973 transitions. Word has length 258 [2023-04-02 06:56:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:50,805 INFO L495 AbstractCegarLoop]: Abstraction has 9227 states and 13973 transitions. [2023-04-02 06:56:50,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 5 states have internal predecessors, (255), 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 06:56:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 9227 states and 13973 transitions. [2023-04-02 06:56:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-04-02 06:56:50,817 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:50,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:50,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:56:50,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:50,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:50,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1204293038, now seen corresponding path program 1 times [2023-04-02 06:56:50,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:50,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441330936] [2023-04-02 06:56:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:51,496 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 06:56:51,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:51,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441330936] [2023-04-02 06:56:51,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441330936] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:51,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:51,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:56:51,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681787384] [2023-04-02 06:56:51,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:51,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:56:51,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:51,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:56:51,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:56:51,499 INFO L87 Difference]: Start difference. First operand 9227 states and 13973 transitions. Second operand has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 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 06:56:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:56:55,086 INFO L93 Difference]: Finished difference Result 26999 states and 40803 transitions. [2023-04-02 06:56:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:56:55,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 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 260 [2023-04-02 06:56:55,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:56:55,158 INFO L225 Difference]: With dead ends: 26999 [2023-04-02 06:56:55,159 INFO L226 Difference]: Without dead ends: 17973 [2023-04-02 06:56:55,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:56:55,180 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 2233 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:56:55,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 2455 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 06:56:55,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2023-04-02 06:56:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 17971. [2023-04-02 06:56:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17971 states, 17967 states have (on average 1.5014749262536873) internal successors, (26977), 17967 states have internal predecessors, (26977), 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 06:56:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17971 states to 17971 states and 26980 transitions. [2023-04-02 06:56:56,392 INFO L78 Accepts]: Start accepts. Automaton has 17971 states and 26980 transitions. Word has length 260 [2023-04-02 06:56:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:56:56,392 INFO L495 AbstractCegarLoop]: Abstraction has 17971 states and 26980 transitions. [2023-04-02 06:56:56,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 4 states have internal predecessors, (257), 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 06:56:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 17971 states and 26980 transitions. [2023-04-02 06:56:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-04-02 06:56:56,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:56:56,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:56:56,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:56:56,419 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:56:56,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:56:56,419 INFO L85 PathProgramCache]: Analyzing trace with hash 16505399, now seen corresponding path program 1 times [2023-04-02 06:56:56,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:56:56,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211166634] [2023-04-02 06:56:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:56:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:56:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:56:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:56:56,823 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 06:56:56,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:56:56,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211166634] [2023-04-02 06:56:56,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211166634] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:56:56,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:56:56,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:56:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553947769] [2023-04-02 06:56:56,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:56:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:56:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:56:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:56:56,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:56:56,826 INFO L87 Difference]: Start difference. First operand 17971 states and 26980 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 06:57:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:02,276 INFO L93 Difference]: Finished difference Result 52249 states and 78148 transitions. [2023-04-02 06:57:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:57:02,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 262 [2023-04-02 06:57:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:02,343 INFO L225 Difference]: With dead ends: 52249 [2023-04-02 06:57:02,344 INFO L226 Difference]: Without dead ends: 35175 [2023-04-02 06:57:02,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:02,368 INFO L413 NwaCegarLoop]: 1910 mSDtfsCounter, 841 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:02,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 2870 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 06:57:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35175 states. [2023-04-02 06:57:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35175 to 35173. [2023-04-02 06:57:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35173 states, 35169 states have (on average 1.4904887827347948) internal successors, (52419), 35169 states have internal predecessors, (52419), 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 06:57:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35173 states to 35173 states and 52422 transitions. [2023-04-02 06:57:04,902 INFO L78 Accepts]: Start accepts. Automaton has 35173 states and 52422 transitions. Word has length 262 [2023-04-02 06:57:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:04,902 INFO L495 AbstractCegarLoop]: Abstraction has 35173 states and 52422 transitions. [2023-04-02 06:57:04,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 06:57:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 35173 states and 52422 transitions. [2023-04-02 06:57:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-04-02 06:57:04,957 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:04,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:04,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:57:04,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:04,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:04,958 INFO L85 PathProgramCache]: Analyzing trace with hash 503721276, now seen corresponding path program 1 times [2023-04-02 06:57:04,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:04,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063104480] [2023-04-02 06:57:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:04,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:05,363 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 06:57:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063104480] [2023-04-02 06:57:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063104480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:05,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:05,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392952524] [2023-04-02 06:57:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:05,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:05,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:05,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:05,365 INFO L87 Difference]: Start difference. First operand 35173 states and 52422 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 06:57:13,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:13,377 INFO L93 Difference]: Finished difference Result 104715 states and 155952 transitions. [2023-04-02 06:57:13,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:57:13,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 262 [2023-04-02 06:57:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:13,516 INFO L225 Difference]: With dead ends: 104715 [2023-04-02 06:57:13,516 INFO L226 Difference]: Without dead ends: 69989 [2023-04-02 06:57:13,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:13,572 INFO L413 NwaCegarLoop]: 1955 mSDtfsCounter, 957 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:13,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 2951 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 06:57:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69989 states. [2023-04-02 06:57:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69989 to 35363. [2023-04-02 06:57:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35363 states, 35359 states have (on average 1.490398484120026) internal successors, (52699), 35359 states have internal predecessors, (52699), 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 06:57:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35363 states to 35363 states and 52702 transitions. [2023-04-02 06:57:16,648 INFO L78 Accepts]: Start accepts. Automaton has 35363 states and 52702 transitions. Word has length 262 [2023-04-02 06:57:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:16,648 INFO L495 AbstractCegarLoop]: Abstraction has 35363 states and 52702 transitions. [2023-04-02 06:57:16,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 3 states have internal predecessors, (259), 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 06:57:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 35363 states and 52702 transitions. [2023-04-02 06:57:16,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-04-02 06:57:16,692 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:16,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:57:16,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:16,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1025344469, now seen corresponding path program 1 times [2023-04-02 06:57:16,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:16,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169108312] [2023-04-02 06:57:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:17,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:17,107 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 06:57:17,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:17,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169108312] [2023-04-02 06:57:17,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169108312] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:17,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:17,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:17,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37548809] [2023-04-02 06:57:17,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:17,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:17,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:17,109 INFO L87 Difference]: Start difference. First operand 35363 states and 52702 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 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 06:57:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:25,944 INFO L93 Difference]: Finished difference Result 104827 states and 156030 transitions. [2023-04-02 06:57:25,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:57:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 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 263 [2023-04-02 06:57:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:26,070 INFO L225 Difference]: With dead ends: 104827 [2023-04-02 06:57:26,070 INFO L226 Difference]: Without dead ends: 70151 [2023-04-02 06:57:26,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:26,108 INFO L413 NwaCegarLoop]: 1955 mSDtfsCounter, 952 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:26,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 2951 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 06:57:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70151 states. [2023-04-02 06:57:29,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70151 to 35525. [2023-04-02 06:57:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35525 states, 35521 states have (on average 1.4888375890318404) internal successors, (52885), 35521 states have internal predecessors, (52885), 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 06:57:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35525 states to 35525 states and 52888 transitions. [2023-04-02 06:57:29,598 INFO L78 Accepts]: Start accepts. Automaton has 35525 states and 52888 transitions. Word has length 263 [2023-04-02 06:57:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:29,598 INFO L495 AbstractCegarLoop]: Abstraction has 35525 states and 52888 transitions. [2023-04-02 06:57:29,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 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 06:57:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 35525 states and 52888 transitions. [2023-04-02 06:57:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-04-02 06:57:29,633 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:29,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:29,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:57:29,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:29,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 762093010, now seen corresponding path program 1 times [2023-04-02 06:57:29,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:29,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392345413] [2023-04-02 06:57:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:30,029 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 06:57:30,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:30,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392345413] [2023-04-02 06:57:30,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392345413] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:30,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:30,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:57:30,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437486609] [2023-04-02 06:57:30,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:30,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:57:30,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:57:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:30,031 INFO L87 Difference]: Start difference. First operand 35525 states and 52888 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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 06:57:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:57:39,441 INFO L93 Difference]: Finished difference Result 103143 states and 153102 transitions. [2023-04-02 06:57:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:57:39,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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 264 [2023-04-02 06:57:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:57:39,546 INFO L225 Difference]: With dead ends: 103143 [2023-04-02 06:57:39,546 INFO L226 Difference]: Without dead ends: 69165 [2023-04-02 06:57:39,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:57:39,586 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 835 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:57:39,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 2881 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-02 06:57:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69165 states. [2023-04-02 06:57:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69165 to 69163. [2023-04-02 06:57:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69163 states, 69159 states have (on average 1.4773926748507062) internal successors, (102175), 69159 states have internal predecessors, (102175), 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 06:57:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69163 states to 69163 states and 102178 transitions. [2023-04-02 06:57:46,117 INFO L78 Accepts]: Start accepts. Automaton has 69163 states and 102178 transitions. Word has length 264 [2023-04-02 06:57:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:57:46,117 INFO L495 AbstractCegarLoop]: Abstraction has 69163 states and 102178 transitions. [2023-04-02 06:57:46,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 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 06:57:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 69163 states and 102178 transitions. [2023-04-02 06:57:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-04-02 06:57:46,193 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:57:46,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:46,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:57:46,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:57:46,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:57:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1512396847, now seen corresponding path program 1 times [2023-04-02 06:57:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:57:46,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211824390] [2023-04-02 06:57:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:57:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:57:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:47,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:57:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:57:47,034 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 06:57:47,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:57:47,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211824390] [2023-04-02 06:57:47,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211824390] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:57:47,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:57:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:57:47,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968633264] [2023-04-02 06:57:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:57:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:57:47,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:57:47,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:57:47,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:57:47,036 INFO L87 Difference]: Start difference. First operand 69163 states and 102178 transitions. Second operand has 6 states, 6 states have (on average 43.5) internal successors, (261), 5 states have internal predecessors, (261), 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 06:58:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:01,864 INFO L93 Difference]: Finished difference Result 202297 states and 298044 transitions. [2023-04-02 06:58:01,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:58:01,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.5) internal successors, (261), 5 states have internal predecessors, (261), 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 264 [2023-04-02 06:58:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:02,114 INFO L225 Difference]: With dead ends: 202297 [2023-04-02 06:58:02,114 INFO L226 Difference]: Without dead ends: 133757 [2023-04-02 06:58:02,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:58:02,193 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 1894 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:02,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 3298 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 06:58:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133757 states. [2023-04-02 06:58:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133757 to 133755. [2023-04-02 06:58:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133755 states, 133751 states have (on average 1.4625012149441874) internal successors, (195611), 133751 states have internal predecessors, (195611), 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 06:58:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133755 states to 133755 states and 195614 transitions. [2023-04-02 06:58:15,977 INFO L78 Accepts]: Start accepts. Automaton has 133755 states and 195614 transitions. Word has length 264 [2023-04-02 06:58:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:58:15,978 INFO L495 AbstractCegarLoop]: Abstraction has 133755 states and 195614 transitions. [2023-04-02 06:58:15,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.5) internal successors, (261), 5 states have internal predecessors, (261), 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 06:58:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 133755 states and 195614 transitions. [2023-04-02 06:58:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-04-02 06:58:16,333 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:58:16,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:58:16,333 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:58:16,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:58:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1379136682, now seen corresponding path program 1 times [2023-04-02 06:58:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:58:16,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793127703] [2023-04-02 06:58:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:58:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:58:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:58:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:58:16,766 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 06:58:16,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:58:16,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793127703] [2023-04-02 06:58:16,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793127703] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:58:16,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:58:16,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:58:16,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410348547] [2023-04-02 06:58:16,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:58:16,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:58:16,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:58:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:58:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:16,768 INFO L87 Difference]: Start difference. First operand 133755 states and 195614 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 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 06:58:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:58:46,248 INFO L93 Difference]: Finished difference Result 387569 states and 564214 transitions. [2023-04-02 06:58:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:58:46,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 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 266 [2023-04-02 06:58:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:58:46,928 INFO L225 Difference]: With dead ends: 387569 [2023-04-02 06:58:46,928 INFO L226 Difference]: Without dead ends: 260327 [2023-04-02 06:58:47,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:58:47,048 INFO L413 NwaCegarLoop]: 1939 mSDtfsCounter, 854 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:58:47,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2899 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 06:58:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260327 states. [2023-04-02 06:59:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260327 to 260325. [2023-04-02 06:59:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260325 states, 260321 states have (on average 1.4493529142865924) internal successors, (377297), 260321 states have internal predecessors, (377297), 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 06:59:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260325 states to 260325 states and 377300 transitions. [2023-04-02 06:59:15,122 INFO L78 Accepts]: Start accepts. Automaton has 260325 states and 377300 transitions. Word has length 266 [2023-04-02 06:59:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:59:15,123 INFO L495 AbstractCegarLoop]: Abstraction has 260325 states and 377300 transitions. [2023-04-02 06:59:15,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 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 06:59:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand 260325 states and 377300 transitions. [2023-04-02 06:59:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-04-02 06:59:15,397 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:59:15,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:15,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:59:15,397 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:59:15,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:59:15,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2134489331, now seen corresponding path program 1 times [2023-04-02 06:59:15,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:59:15,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755193170] [2023-04-02 06:59:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:59:15,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:59:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:59:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:59:16,294 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 06:59:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:59:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755193170] [2023-04-02 06:59:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755193170] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:59:16,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:59:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:59:16,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617728460] [2023-04-02 06:59:16,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:59:16,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:59:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:59:16,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:59:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:59:16,296 INFO L87 Difference]: Start difference. First operand 260325 states and 377300 transitions. Second operand has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 5 states have internal predecessors, (263), 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)