/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:09:53,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:09:53,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:09:53,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:09:53,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:09:53,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:09:53,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:09:53,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:09:53,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:09:53,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:09:53,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:09:53,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:09:53,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:09:53,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:09:53,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:09:53,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:09:53,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:09:53,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:09:53,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:09:53,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:09:53,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:09:53,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:09:53,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:09:53,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:09:53,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:09:53,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:09:53,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:09:53,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:09:53,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:09:53,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:09:53,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:09:53,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:09:53,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:09:53,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:09:53,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:09:53,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:09:53,233 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 06:09:53,266 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:09:53,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:09:53,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:09:53,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:09:53,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:09:53,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:09:53,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:09:53,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:09:53,268 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:09:53,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:09:53,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:09:53,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:09:53,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:09:53,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:09:53,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:09:53,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:09:53,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:09:53,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:09:53,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:09:53,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:09:53,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:09:53,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:09:53,271 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:09:53,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:09:53,271 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:09:53,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:09:53,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:09:53,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:09:53,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:09:53,657 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:09:53,657 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:09:53,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:09:54,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:09:55,084 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:09:55,089 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:09:55,096 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ac7b3a99/49bfa450094b494fb07b451bbb3a2e03/FLAG07b697030 [2023-04-02 06:09:55,114 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ac7b3a99/49bfa450094b494fb07b451bbb3a2e03 [2023-04-02 06:09:55,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:09:55,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:09:55,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:09:55,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:09:55,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:09:55,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aeff7a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55, skipping insertion in model container [2023-04-02 06:09:55,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:09:55,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:09:55,345 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2023-04-02 06:09:55,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:09:55,401 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:09:55,440 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2023-04-02 06:09:55,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:09:55,475 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:09:55,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55 WrapperNode [2023-04-02 06:09:55,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:09:55,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:09:55,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:09:55,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:09:55,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,515 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:09:55,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:09:55,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:09:55,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:09:55,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (1/1) ... [2023-04-02 06:09:55,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:09:55,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:09:55,569 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 06:09:55,573 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 06:09:55,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:09:55,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:09:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:09:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:09:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:09:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:09:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:09:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:09:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:09:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:09:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:09:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:09:55,826 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:09:55,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:09:56,358 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:09:56,364 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:09:56,364 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:09:56,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:09:56 BoogieIcfgContainer [2023-04-02 06:09:56,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:09:56,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:09:56,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:09:56,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:09:56,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:09:55" (1/3) ... [2023-04-02 06:09:56,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33305e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:09:56, skipping insertion in model container [2023-04-02 06:09:56,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:09:55" (2/3) ... [2023-04-02 06:09:56,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33305e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:09:56, skipping insertion in model container [2023-04-02 06:09:56,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:09:56" (3/3) ... [2023-04-02 06:09:56,375 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:09:56,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:09:56,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:09:56,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:09:56,441 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;@487190f1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:09:56,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:09:56,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 169 states have (on average 1.7159763313609468) internal successors, (290), 170 states have internal predecessors, (290), 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 06:09:56,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 06:09:56,455 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:56,455 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] [2023-04-02 06:09:56,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:56,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:56,460 INFO L85 PathProgramCache]: Analyzing trace with hash -999594861, now seen corresponding path program 1 times [2023-04-02 06:09:56,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:56,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182387268] [2023-04-02 06:09:56,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:57,082 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 06:09:57,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182387268] [2023-04-02 06:09:57,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182387268] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:57,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:57,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:09:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695870381] [2023-04-02 06:09:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:57,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:09:57,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:57,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:09:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:09:57,120 INFO L87 Difference]: Start difference. First operand has 175 states, 169 states have (on average 1.7159763313609468) internal successors, (290), 170 states have internal predecessors, (290), 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 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 06:09:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:57,801 INFO L93 Difference]: Finished difference Result 615 states and 989 transitions. [2023-04-02 06:09:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:09:57,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 67 [2023-04-02 06:09:57,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:57,814 INFO L225 Difference]: With dead ends: 615 [2023-04-02 06:09:57,814 INFO L226 Difference]: Without dead ends: 515 [2023-04-02 06:09:57,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:09:57,819 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 1753 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:57,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1753 Valid, 1390 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:09:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-04-02 06:09:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 264. [2023-04-02 06:09:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 260 states have (on average 1.5076923076923077) internal successors, (392), 260 states have internal predecessors, (392), 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 06:09:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 395 transitions. [2023-04-02 06:09:57,876 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 395 transitions. Word has length 67 [2023-04-02 06:09:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:57,876 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 395 transitions. [2023-04-02 06:09:57,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 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 06:09:57,877 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 395 transitions. [2023-04-02 06:09:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:09:57,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:57,878 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] [2023-04-02 06:09:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:09:57,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:57,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1184088321, now seen corresponding path program 1 times [2023-04-02 06:09:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999019491] [2023-04-02 06:09:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:58,160 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 06:09:58,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:58,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999019491] [2023-04-02 06:09:58,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999019491] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:58,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:58,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:09:58,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001872414] [2023-04-02 06:09:58,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:58,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:09:58,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:09:58,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:09:58,163 INFO L87 Difference]: Start difference. First operand 264 states and 395 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 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 06:09:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:58,664 INFO L93 Difference]: Finished difference Result 972 states and 1499 transitions. [2023-04-02 06:09:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:09:58,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 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 68 [2023-04-02 06:09:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:58,667 INFO L225 Difference]: With dead ends: 972 [2023-04-02 06:09:58,668 INFO L226 Difference]: Without dead ends: 770 [2023-04-02 06:09:58,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:09:58,670 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 773 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:58,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 735 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:09:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-04-02 06:09:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 764. [2023-04-02 06:09:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 760 states have (on average 1.5328947368421053) internal successors, (1165), 760 states have internal predecessors, (1165), 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 06:09:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1168 transitions. [2023-04-02 06:09:58,739 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1168 transitions. Word has length 68 [2023-04-02 06:09:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:58,739 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 1168 transitions. [2023-04-02 06:09:58,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 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 06:09:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1168 transitions. [2023-04-02 06:09:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:09:58,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:58,742 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] [2023-04-02 06:09:58,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:09:58,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:58,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash 109048745, now seen corresponding path program 1 times [2023-04-02 06:09:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944437259] [2023-04-02 06:09:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:09:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:09:59,004 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 06:09:59,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:09:59,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944437259] [2023-04-02 06:09:59,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944437259] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:09:59,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:09:59,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:09:59,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308746754] [2023-04-02 06:09:59,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:09:59,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:09:59,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:09:59,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:09:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:09:59,008 INFO L87 Difference]: Start difference. First operand 764 states and 1168 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 06:09:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:09:59,696 INFO L93 Difference]: Finished difference Result 1926 states and 2994 transitions. [2023-04-02 06:09:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:09:59,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:09:59,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:09:59,701 INFO L225 Difference]: With dead ends: 1926 [2023-04-02 06:09:59,701 INFO L226 Difference]: Without dead ends: 1262 [2023-04-02 06:09:59,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:09:59,704 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 878 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:09:59,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 247 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:09:59,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-04-02 06:09:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1260. [2023-04-02 06:09:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1256 states have (on average 1.5437898089171975) internal successors, (1939), 1256 states have internal predecessors, (1939), 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 06:09:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1942 transitions. [2023-04-02 06:09:59,827 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1942 transitions. Word has length 69 [2023-04-02 06:09:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:09:59,828 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1942 transitions. [2023-04-02 06:09:59,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 06:09:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1942 transitions. [2023-04-02 06:09:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:09:59,831 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:09:59,831 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] [2023-04-02 06:09:59,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:09:59,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:09:59,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:09:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1786686872, now seen corresponding path program 1 times [2023-04-02 06:09:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:09:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187973979] [2023-04-02 06:09:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:09:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:09:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:00,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:00,055 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 06:10:00,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:00,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187973979] [2023-04-02 06:10:00,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187973979] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:00,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:00,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:10:00,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660711091] [2023-04-02 06:10:00,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:00,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:10:00,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:00,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:10:00,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:10:00,058 INFO L87 Difference]: Start difference. First operand 1260 states and 1942 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 06:10:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:00,751 INFO L93 Difference]: Finished difference Result 3467 states and 5397 transitions. [2023-04-02 06:10:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:10:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:00,760 INFO L225 Difference]: With dead ends: 3467 [2023-04-02 06:10:00,760 INFO L226 Difference]: Without dead ends: 2280 [2023-04-02 06:10:00,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:10:00,763 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 908 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:00,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 243 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:10:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2023-04-02 06:10:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2278. [2023-04-02 06:10:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 2274 states have (on average 1.5474934036939314) internal successors, (3519), 2274 states have internal predecessors, (3519), 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 06:10:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3522 transitions. [2023-04-02 06:10:00,970 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3522 transitions. Word has length 69 [2023-04-02 06:10:00,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:00,970 INFO L495 AbstractCegarLoop]: Abstraction has 2278 states and 3522 transitions. [2023-04-02 06:10:00,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 06:10:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3522 transitions. [2023-04-02 06:10:00,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:10:00,972 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:00,972 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] [2023-04-02 06:10:00,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:10:00,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:00,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:00,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2014260345, now seen corresponding path program 1 times [2023-04-02 06:10:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:00,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464451906] [2023-04-02 06:10:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:01,151 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 06:10:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464451906] [2023-04-02 06:10:01,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464451906] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:01,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:01,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:10:01,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451935144] [2023-04-02 06:10:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:10:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:10:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:10:01,153 INFO L87 Difference]: Start difference. First operand 2278 states and 3522 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 06:10:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:02,028 INFO L93 Difference]: Finished difference Result 6564 states and 10210 transitions. [2023-04-02 06:10:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:02,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-04-02 06:10:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:02,043 INFO L225 Difference]: With dead ends: 6564 [2023-04-02 06:10:02,043 INFO L226 Difference]: Without dead ends: 4336 [2023-04-02 06:10:02,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:10:02,048 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 934 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:02,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 241 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:10:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2023-04-02 06:10:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4334. [2023-04-02 06:10:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4330 states have (on average 1.5454965357967667) internal successors, (6692), 4330 states have internal predecessors, (6692), 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 06:10:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 6695 transitions. [2023-04-02 06:10:02,460 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 6695 transitions. Word has length 69 [2023-04-02 06:10:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:02,460 INFO L495 AbstractCegarLoop]: Abstraction has 4334 states and 6695 transitions. [2023-04-02 06:10:02,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 06:10:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 6695 transitions. [2023-04-02 06:10:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:10:02,461 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:02,462 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] [2023-04-02 06:10:02,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:10:02,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:02,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:02,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1473887254, now seen corresponding path program 1 times [2023-04-02 06:10:02,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:02,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413972634] [2023-04-02 06:10:02,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:02,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:02,852 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 06:10:02,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413972634] [2023-04-02 06:10:02,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413972634] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:02,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:02,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:10:02,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884408459] [2023-04-02 06:10:02,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:02,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:10:02,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:02,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:10:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:10:02,854 INFO L87 Difference]: Start difference. First operand 4334 states and 6695 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 06:10:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:04,220 INFO L93 Difference]: Finished difference Result 8384 states and 12944 transitions. [2023-04-02 06:10:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:04,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 70 [2023-04-02 06:10:04,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:04,248 INFO L225 Difference]: With dead ends: 8384 [2023-04-02 06:10:04,248 INFO L226 Difference]: Without dead ends: 8382 [2023-04-02 06:10:04,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:10:04,251 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 230 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:04,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 952 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:10:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8382 states. [2023-04-02 06:10:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8382 to 4462. [2023-04-02 06:10:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4458 states have (on average 1.5298340062808433) internal successors, (6820), 4458 states have internal predecessors, (6820), 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 06:10:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 6823 transitions. [2023-04-02 06:10:04,877 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 6823 transitions. Word has length 70 [2023-04-02 06:10:04,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:04,878 INFO L495 AbstractCegarLoop]: Abstraction has 4462 states and 6823 transitions. [2023-04-02 06:10:04,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 06:10:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 6823 transitions. [2023-04-02 06:10:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:10:04,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:04,880 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] [2023-04-02 06:10:04,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:10:04,880 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:04,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1814476254, now seen corresponding path program 1 times [2023-04-02 06:10:04,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:04,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296561690] [2023-04-02 06:10:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:05,350 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 06:10:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296561690] [2023-04-02 06:10:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296561690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:05,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:10:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544346543] [2023-04-02 06:10:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:05,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:10:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:10:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:10:05,353 INFO L87 Difference]: Start difference. First operand 4462 states and 6823 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 06:10:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:07,692 INFO L93 Difference]: Finished difference Result 11879 states and 18042 transitions. [2023-04-02 06:10:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:10:07,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:10:07,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:07,740 INFO L225 Difference]: With dead ends: 11879 [2023-04-02 06:10:07,740 INFO L226 Difference]: Without dead ends: 11235 [2023-04-02 06:10:07,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2023-04-02 06:10:07,750 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1306 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:07,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 1201 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:10:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11235 states. [2023-04-02 06:10:08,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11235 to 4462. [2023-04-02 06:10:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4458 states have (on average 1.5296096904441454) internal successors, (6819), 4458 states have internal predecessors, (6819), 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 06:10:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 6822 transitions. [2023-04-02 06:10:08,742 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 6822 transitions. Word has length 71 [2023-04-02 06:10:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:08,742 INFO L495 AbstractCegarLoop]: Abstraction has 4462 states and 6822 transitions. [2023-04-02 06:10:08,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 06:10:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 6822 transitions. [2023-04-02 06:10:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:10:08,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:08,744 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] [2023-04-02 06:10:08,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:10:08,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:08,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash 509825406, now seen corresponding path program 1 times [2023-04-02 06:10:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:08,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544438725] [2023-04-02 06:10:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:09,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:09,151 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 06:10:09,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:09,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544438725] [2023-04-02 06:10:09,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544438725] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:09,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:09,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:10:09,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569147677] [2023-04-02 06:10:09,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:09,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:10:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:10:09,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:10:09,153 INFO L87 Difference]: Start difference. First operand 4462 states and 6822 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 06:10:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:11,985 INFO L93 Difference]: Finished difference Result 15731 states and 23892 transitions. [2023-04-02 06:10:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 06:10:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:10:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:12,017 INFO L225 Difference]: With dead ends: 15731 [2023-04-02 06:10:12,017 INFO L226 Difference]: Without dead ends: 14061 [2023-04-02 06:10:12,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:10:12,027 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1449 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:12,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 1149 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:10:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14061 states. [2023-04-02 06:10:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14061 to 4563. [2023-04-02 06:10:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4559 states have (on average 1.5264312349199385) internal successors, (6959), 4559 states have internal predecessors, (6959), 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 06:10:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 6962 transitions. [2023-04-02 06:10:12,984 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 6962 transitions. Word has length 71 [2023-04-02 06:10:12,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:12,984 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 6962 transitions. [2023-04-02 06:10:12,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 06:10:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 6962 transitions. [2023-04-02 06:10:12,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:10:12,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:12,986 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] [2023-04-02 06:10:12,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:10:12,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:12,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1718112994, now seen corresponding path program 1 times [2023-04-02 06:10:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886024037] [2023-04-02 06:10:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:12,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:13,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:13,290 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 06:10:13,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:13,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886024037] [2023-04-02 06:10:13,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886024037] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:13,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:13,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:10:13,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49051978] [2023-04-02 06:10:13,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:13,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:10:13,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:13,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:10:13,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:10:13,292 INFO L87 Difference]: Start difference. First operand 4563 states and 6962 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 06:10:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:16,770 INFO L93 Difference]: Finished difference Result 19843 states and 30079 transitions. [2023-04-02 06:10:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 06:10:16,771 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:10:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:16,799 INFO L225 Difference]: With dead ends: 19843 [2023-04-02 06:10:16,800 INFO L226 Difference]: Without dead ends: 17113 [2023-04-02 06:10:16,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-04-02 06:10:16,810 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1517 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:16,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1185 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:10:16,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17113 states. [2023-04-02 06:10:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17113 to 4698. [2023-04-02 06:10:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4698 states, 4694 states have (on average 1.52002556455049) internal successors, (7135), 4694 states have internal predecessors, (7135), 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 06:10:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 7138 transitions. [2023-04-02 06:10:17,558 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 7138 transitions. Word has length 71 [2023-04-02 06:10:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:17,558 INFO L495 AbstractCegarLoop]: Abstraction has 4698 states and 7138 transitions. [2023-04-02 06:10:17,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 06:10:17,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 7138 transitions. [2023-04-02 06:10:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:10:17,560 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:17,561 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] [2023-04-02 06:10:17,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:10:17,561 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:17,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1890336609, now seen corresponding path program 1 times [2023-04-02 06:10:17,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:17,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844047484] [2023-04-02 06:10:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:17,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:17,743 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 06:10:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:17,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844047484] [2023-04-02 06:10:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844047484] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:17,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:17,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:10:17,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141411695] [2023-04-02 06:10:17,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:17,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:10:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:10:17,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:10:17,745 INFO L87 Difference]: Start difference. First operand 4698 states and 7138 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 06:10:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:19,472 INFO L93 Difference]: Finished difference Result 12746 states and 19429 transitions. [2023-04-02 06:10:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:19,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:10:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:19,485 INFO L225 Difference]: With dead ends: 12746 [2023-04-02 06:10:19,486 INFO L226 Difference]: Without dead ends: 8100 [2023-04-02 06:10:19,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:10:19,495 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 763 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:19,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 304 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:10:19,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2023-04-02 06:10:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 8098. [2023-04-02 06:10:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8098 states, 8094 states have (on average 1.5171732147269583) internal successors, (12280), 8094 states have internal predecessors, (12280), 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 06:10:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8098 states to 8098 states and 12283 transitions. [2023-04-02 06:10:20,696 INFO L78 Accepts]: Start accepts. Automaton has 8098 states and 12283 transitions. Word has length 71 [2023-04-02 06:10:20,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:20,696 INFO L495 AbstractCegarLoop]: Abstraction has 8098 states and 12283 transitions. [2023-04-02 06:10:20,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 06:10:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8098 states and 12283 transitions. [2023-04-02 06:10:20,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:10:20,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:20,699 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] [2023-04-02 06:10:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:10:20,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:20,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2097640580, now seen corresponding path program 1 times [2023-04-02 06:10:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68004556] [2023-04-02 06:10:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:20,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:20,826 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 06:10:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68004556] [2023-04-02 06:10:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68004556] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:20,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:20,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:10:20,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644089660] [2023-04-02 06:10:20,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:20,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:10:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:20,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:10:20,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:10:20,827 INFO L87 Difference]: Start difference. First operand 8098 states and 12283 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 06:10:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:23,049 INFO L93 Difference]: Finished difference Result 17497 states and 26580 transitions. [2023-04-02 06:10:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:10:23,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 72 [2023-04-02 06:10:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:23,065 INFO L225 Difference]: With dead ends: 17497 [2023-04-02 06:10:23,065 INFO L226 Difference]: Without dead ends: 10897 [2023-04-02 06:10:23,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:10:23,075 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 167 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:23,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 458 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:10:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10897 states. [2023-04-02 06:10:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10897 to 7915. [2023-04-02 06:10:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7915 states, 7911 states have (on average 1.4941221084565794) internal successors, (11820), 7911 states have internal predecessors, (11820), 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 06:10:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7915 states to 7915 states and 11823 transitions. [2023-04-02 06:10:24,343 INFO L78 Accepts]: Start accepts. Automaton has 7915 states and 11823 transitions. Word has length 72 [2023-04-02 06:10:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:24,343 INFO L495 AbstractCegarLoop]: Abstraction has 7915 states and 11823 transitions. [2023-04-02 06:10:24,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 06:10:24,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7915 states and 11823 transitions. [2023-04-02 06:10:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:10:24,346 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:24,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:10:24,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:10:24,347 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:24,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1892193057, now seen corresponding path program 1 times [2023-04-02 06:10:24,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:24,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733424127] [2023-04-02 06:10:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:24,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:24,523 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 06:10:24,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733424127] [2023-04-02 06:10:24,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733424127] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:24,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:24,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:10:24,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474268453] [2023-04-02 06:10:24,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:24,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:10:24,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:24,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:10:24,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:10:24,524 INFO L87 Difference]: Start difference. First operand 7915 states and 11823 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 06:10:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:27,235 INFO L93 Difference]: Finished difference Result 20991 states and 31569 transitions. [2023-04-02 06:10:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:10:27,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 72 [2023-04-02 06:10:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:27,254 INFO L225 Difference]: With dead ends: 20991 [2023-04-02 06:10:27,254 INFO L226 Difference]: Without dead ends: 14109 [2023-04-02 06:10:27,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:10:27,264 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 159 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:27,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 573 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:10:27,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14109 states. [2023-04-02 06:10:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14109 to 13995. [2023-04-02 06:10:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13995 states, 13991 states have (on average 1.486955900221571) internal successors, (20804), 13991 states have internal predecessors, (20804), 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 06:10:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13995 states to 13995 states and 20807 transitions. [2023-04-02 06:10:29,719 INFO L78 Accepts]: Start accepts. Automaton has 13995 states and 20807 transitions. Word has length 72 [2023-04-02 06:10:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:29,719 INFO L495 AbstractCegarLoop]: Abstraction has 13995 states and 20807 transitions. [2023-04-02 06:10:29,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 06:10:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 13995 states and 20807 transitions. [2023-04-02 06:10:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:10:29,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:29,739 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] [2023-04-02 06:10:29,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:10:29,739 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:29,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1179494946, now seen corresponding path program 1 times [2023-04-02 06:10:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:29,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952314330] [2023-04-02 06:10:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:29,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:29,931 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 06:10:29,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:29,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952314330] [2023-04-02 06:10:29,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952314330] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:29,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:29,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:10:29,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769894430] [2023-04-02 06:10:29,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:29,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:10:29,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:10:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:10:29,933 INFO L87 Difference]: Start difference. First operand 13995 states and 20807 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 06:10:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:33,459 INFO L93 Difference]: Finished difference Result 19829 states and 29432 transitions. [2023-04-02 06:10:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:10:33,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 72 [2023-04-02 06:10:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:33,482 INFO L225 Difference]: With dead ends: 19829 [2023-04-02 06:10:33,483 INFO L226 Difference]: Without dead ends: 15497 [2023-04-02 06:10:33,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:10:33,491 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 139 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:33,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 530 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:10:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15497 states. [2023-04-02 06:10:36,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15497 to 13639. [2023-04-02 06:10:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13639 states, 13635 states have (on average 1.45984598459846) internal successors, (19905), 13635 states have internal predecessors, (19905), 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 06:10:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13639 states to 13639 states and 19908 transitions. [2023-04-02 06:10:36,281 INFO L78 Accepts]: Start accepts. Automaton has 13639 states and 19908 transitions. Word has length 72 [2023-04-02 06:10:36,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:36,281 INFO L495 AbstractCegarLoop]: Abstraction has 13639 states and 19908 transitions. [2023-04-02 06:10:36,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 06:10:36,281 INFO L276 IsEmpty]: Start isEmpty. Operand 13639 states and 19908 transitions. [2023-04-02 06:10:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:10:36,284 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:36,284 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] [2023-04-02 06:10:36,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:10:36,284 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:36,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:36,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1734519044, now seen corresponding path program 1 times [2023-04-02 06:10:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:36,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649298174] [2023-04-02 06:10:36,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:36,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:36,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:36,419 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 06:10:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649298174] [2023-04-02 06:10:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649298174] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:36,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:10:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437871289] [2023-04-02 06:10:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:36,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:10:36,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:10:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:10:36,420 INFO L87 Difference]: Start difference. First operand 13639 states and 19908 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 06:10:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:40,625 INFO L93 Difference]: Finished difference Result 23275 states and 34032 transitions. [2023-04-02 06:10:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:10:40,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 72 [2023-04-02 06:10:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:40,651 INFO L225 Difference]: With dead ends: 23275 [2023-04-02 06:10:40,651 INFO L226 Difference]: Without dead ends: 15589 [2023-04-02 06:10:40,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:10:40,665 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 149 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:40,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 476 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:10:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15589 states. [2023-04-02 06:10:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15589 to 15379. [2023-04-02 06:10:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15379 states, 15375 states have (on average 1.4325203252032521) internal successors, (22025), 15375 states have internal predecessors, (22025), 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 06:10:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15379 states to 15379 states and 22028 transitions. [2023-04-02 06:10:44,078 INFO L78 Accepts]: Start accepts. Automaton has 15379 states and 22028 transitions. Word has length 72 [2023-04-02 06:10:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:44,079 INFO L495 AbstractCegarLoop]: Abstraction has 15379 states and 22028 transitions. [2023-04-02 06:10:44,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 06:10:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 15379 states and 22028 transitions. [2023-04-02 06:10:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:10:44,102 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:44,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:10:44,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:10:44,102 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:44,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:44,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1083219167, now seen corresponding path program 1 times [2023-04-02 06:10:44,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:44,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987501459] [2023-04-02 06:10:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:44,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:44,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:44,296 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 06:10:44,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987501459] [2023-04-02 06:10:44,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987501459] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:44,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:44,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:10:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253278283] [2023-04-02 06:10:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:44,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:10:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:10:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:10:44,297 INFO L87 Difference]: Start difference. First operand 15379 states and 22028 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 06:10:50,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:50,221 INFO L93 Difference]: Finished difference Result 27852 states and 40181 transitions. [2023-04-02 06:10:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:10:50,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 73 [2023-04-02 06:10:50,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:50,268 INFO L225 Difference]: With dead ends: 27852 [2023-04-02 06:10:50,268 INFO L226 Difference]: Without dead ends: 26434 [2023-04-02 06:10:50,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:10:50,279 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 987 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:50,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1107 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:10:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26434 states. [2023-04-02 06:10:54,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26434 to 16781. [2023-04-02 06:10:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16781 states, 16777 states have (on average 1.4329737140132324) internal successors, (24041), 16777 states have internal predecessors, (24041), 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 06:10:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16781 states to 16781 states and 24044 transitions. [2023-04-02 06:10:54,086 INFO L78 Accepts]: Start accepts. Automaton has 16781 states and 24044 transitions. Word has length 73 [2023-04-02 06:10:54,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:10:54,086 INFO L495 AbstractCegarLoop]: Abstraction has 16781 states and 24044 transitions. [2023-04-02 06:10:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 06:10:54,086 INFO L276 IsEmpty]: Start isEmpty. Operand 16781 states and 24044 transitions. [2023-04-02 06:10:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:10:54,089 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:10:54,089 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] [2023-04-02 06:10:54,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:10:54,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:10:54,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:10:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1778095969, now seen corresponding path program 1 times [2023-04-02 06:10:54,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:10:54,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655400878] [2023-04-02 06:10:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:10:54,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:10:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:54,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:10:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:10:54,240 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 06:10:54,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:10:54,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655400878] [2023-04-02 06:10:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655400878] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:10:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:10:54,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:10:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920381739] [2023-04-02 06:10:54,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:10:54,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:10:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:10:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:10:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:10:54,243 INFO L87 Difference]: Start difference. First operand 16781 states and 24044 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 06:10:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:10:58,838 INFO L93 Difference]: Finished difference Result 33126 states and 47323 transitions. [2023-04-02 06:10:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:10:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 73 [2023-04-02 06:10:58,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:10:58,868 INFO L225 Difference]: With dead ends: 33126 [2023-04-02 06:10:58,868 INFO L226 Difference]: Without dead ends: 18794 [2023-04-02 06:10:58,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:10:58,953 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 156 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:10:58,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 441 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:10:58,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2023-04-02 06:11:02,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 18612. [2023-04-02 06:11:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18612 states, 18608 states have (on average 1.393701633705933) internal successors, (25934), 18608 states have internal predecessors, (25934), 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 06:11:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18612 states to 18612 states and 25937 transitions. [2023-04-02 06:11:02,982 INFO L78 Accepts]: Start accepts. Automaton has 18612 states and 25937 transitions. Word has length 73 [2023-04-02 06:11:02,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:02,983 INFO L495 AbstractCegarLoop]: Abstraction has 18612 states and 25937 transitions. [2023-04-02 06:11:02,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 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 06:11:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 18612 states and 25937 transitions. [2023-04-02 06:11:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:11:02,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:02,985 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] [2023-04-02 06:11:02,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:11:02,985 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:11:02,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1093741519, now seen corresponding path program 1 times [2023-04-02 06:11:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:02,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035156035] [2023-04-02 06:11:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:03,167 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 06:11:03,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:03,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035156035] [2023-04-02 06:11:03,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035156035] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:03,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:03,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:11:03,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365846206] [2023-04-02 06:11:03,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:03,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:11:03,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:11:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:11:03,168 INFO L87 Difference]: Start difference. First operand 18612 states and 25937 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 06:11:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:10,898 INFO L93 Difference]: Finished difference Result 35392 states and 49741 transitions. [2023-04-02 06:11:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:11:10,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 73 [2023-04-02 06:11:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:10,945 INFO L225 Difference]: With dead ends: 35392 [2023-04-02 06:11:10,945 INFO L226 Difference]: Without dead ends: 31178 [2023-04-02 06:11:10,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:11:10,957 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 974 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:10,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1134 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:11:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31178 states. [2023-04-02 06:11:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31178 to 22790. [2023-04-02 06:11:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22790 states, 22786 states have (on average 1.3940577547616957) internal successors, (31765), 22786 states have internal predecessors, (31765), 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 06:11:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22790 states to 22790 states and 31768 transitions. [2023-04-02 06:11:16,324 INFO L78 Accepts]: Start accepts. Automaton has 22790 states and 31768 transitions. Word has length 73 [2023-04-02 06:11:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:16,324 INFO L495 AbstractCegarLoop]: Abstraction has 22790 states and 31768 transitions. [2023-04-02 06:11:16,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 06:11:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22790 states and 31768 transitions. [2023-04-02 06:11:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:11:16,328 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:16,328 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] [2023-04-02 06:11:16,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:11:16,328 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:11:16,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash 367682117, now seen corresponding path program 1 times [2023-04-02 06:11:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807806554] [2023-04-02 06:11:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:16,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:16,567 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 06:11:16,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:16,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807806554] [2023-04-02 06:11:16,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807806554] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:16,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:16,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:11:16,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969415730] [2023-04-02 06:11:16,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:16,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:11:16,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:11:16,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:11:16,569 INFO L87 Difference]: Start difference. First operand 22790 states and 31768 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 06:11:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:25,617 INFO L93 Difference]: Finished difference Result 41706 states and 58612 transitions. [2023-04-02 06:11:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:11:25,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 73 [2023-04-02 06:11:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:25,681 INFO L225 Difference]: With dead ends: 41706 [2023-04-02 06:11:25,682 INFO L226 Difference]: Without dead ends: 35284 [2023-04-02 06:11:25,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:11:25,700 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1013 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:25,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1218 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:11:25,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35284 states. [2023-04-02 06:11:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35284 to 27651. [2023-04-02 06:11:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27651 states, 27647 states have (on average 1.3964625456649908) internal successors, (38608), 27647 states have internal predecessors, (38608), 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 06:11:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27651 states to 27651 states and 38611 transitions. [2023-04-02 06:11:32,442 INFO L78 Accepts]: Start accepts. Automaton has 27651 states and 38611 transitions. Word has length 73 [2023-04-02 06:11:32,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:32,443 INFO L495 AbstractCegarLoop]: Abstraction has 27651 states and 38611 transitions. [2023-04-02 06:11:32,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 06:11:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 27651 states and 38611 transitions. [2023-04-02 06:11:32,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:11:32,446 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:32,446 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] [2023-04-02 06:11:32,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:11:32,446 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:11:32,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:32,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1079398259, now seen corresponding path program 1 times [2023-04-02 06:11:32,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:32,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865027060] [2023-04-02 06:11:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:32,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:32,687 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 06:11:32,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:32,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865027060] [2023-04-02 06:11:32,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865027060] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:32,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:32,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:11:32,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797463396] [2023-04-02 06:11:32,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:32,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:11:32,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:32,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:11:32,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:11:32,690 INFO L87 Difference]: Start difference. First operand 27651 states and 38611 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 06:11:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:11:43,740 INFO L93 Difference]: Finished difference Result 49534 states and 69552 transitions. [2023-04-02 06:11:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:11:43,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 73 [2023-04-02 06:11:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:11:43,806 INFO L225 Difference]: With dead ends: 49534 [2023-04-02 06:11:43,806 INFO L226 Difference]: Without dead ends: 41616 [2023-04-02 06:11:43,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:11:43,827 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1021 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:11:43,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1087 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:11:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41616 states. [2023-04-02 06:11:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41616 to 31695. [2023-04-02 06:11:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31695 states, 31691 states have (on average 1.3971159004133666) internal successors, (44276), 31691 states have internal predecessors, (44276), 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 06:11:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31695 states to 31695 states and 44279 transitions. [2023-04-02 06:11:52,084 INFO L78 Accepts]: Start accepts. Automaton has 31695 states and 44279 transitions. Word has length 73 [2023-04-02 06:11:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:11:52,085 INFO L495 AbstractCegarLoop]: Abstraction has 31695 states and 44279 transitions. [2023-04-02 06:11:52,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 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 06:11:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 31695 states and 44279 transitions. [2023-04-02 06:11:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:11:52,090 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:11:52,090 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] [2023-04-02 06:11:52,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:11:52,090 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:11:52,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:11:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 207297620, now seen corresponding path program 1 times [2023-04-02 06:11:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:11:52,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080918192] [2023-04-02 06:11:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:11:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:11:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:11:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:11:52,376 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 06:11:52,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:11:52,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080918192] [2023-04-02 06:11:52,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080918192] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:11:52,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:11:52,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:11:52,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060805627] [2023-04-02 06:11:52,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:11:52,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:11:52,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:11:52,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:11:52,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:11:52,378 INFO L87 Difference]: Start difference. First operand 31695 states and 44279 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 06:12:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:12:28,686 INFO L93 Difference]: Finished difference Result 136315 states and 188593 transitions. [2023-04-02 06:12:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:12:28,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2023-04-02 06:12:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:12:29,169 INFO L225 Difference]: With dead ends: 136315 [2023-04-02 06:12:29,169 INFO L226 Difference]: Without dead ends: 124679 [2023-04-02 06:12:29,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:12:29,223 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2495 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2495 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:12:29,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2495 Valid, 509 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:12:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124679 states. [2023-04-02 06:12:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124679 to 31859. [2023-04-02 06:12:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31859 states, 31855 states have (on average 1.3962643227122902) internal successors, (44478), 31855 states have internal predecessors, (44478), 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 06:12:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31859 states to 31859 states and 44481 transitions. [2023-04-02 06:12:40,195 INFO L78 Accepts]: Start accepts. Automaton has 31859 states and 44481 transitions. Word has length 78 [2023-04-02 06:12:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:12:40,197 INFO L495 AbstractCegarLoop]: Abstraction has 31859 states and 44481 transitions. [2023-04-02 06:12:40,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 06:12:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 31859 states and 44481 transitions. [2023-04-02 06:12:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:12:40,201 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:12:40,204 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] [2023-04-02 06:12:40,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:12:40,205 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:12:40,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:12:40,205 INFO L85 PathProgramCache]: Analyzing trace with hash -927633962, now seen corresponding path program 1 times [2023-04-02 06:12:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:12:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473113055] [2023-04-02 06:12:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:12:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:12:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:12:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:12:40,385 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 06:12:40,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:12:40,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473113055] [2023-04-02 06:12:40,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473113055] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:12:40,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:12:40,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:12:40,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107819668] [2023-04-02 06:12:40,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:12:40,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:12:40,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:12:40,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:12:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:12:40,388 INFO L87 Difference]: Start difference. First operand 31859 states and 44481 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 06:13:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:13:22,599 INFO L93 Difference]: Finished difference Result 139394 states and 194857 transitions. [2023-04-02 06:13:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:13:22,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2023-04-02 06:13:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:13:22,903 INFO L225 Difference]: With dead ends: 139394 [2023-04-02 06:13:22,903 INFO L226 Difference]: Without dead ends: 129164 [2023-04-02 06:13:22,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:13:22,964 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 3384 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3384 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:13:22,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3384 Valid, 466 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:13:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129164 states. [2023-04-02 06:13:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129164 to 31883. [2023-04-02 06:13:34,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31883 states, 31879 states have (on average 1.3962169453245084) internal successors, (44510), 31879 states have internal predecessors, (44510), 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 06:13:34,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31883 states to 31883 states and 44513 transitions. [2023-04-02 06:13:34,108 INFO L78 Accepts]: Start accepts. Automaton has 31883 states and 44513 transitions. Word has length 78 [2023-04-02 06:13:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:13:34,108 INFO L495 AbstractCegarLoop]: Abstraction has 31883 states and 44513 transitions. [2023-04-02 06:13:34,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 06:13:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 31883 states and 44513 transitions. [2023-04-02 06:13:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 06:13:34,113 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:13:34,113 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] [2023-04-02 06:13:34,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:13:34,113 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:13:34,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:13:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1140508972, now seen corresponding path program 1 times [2023-04-02 06:13:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:13:34,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380356629] [2023-04-02 06:13:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:13:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:13:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:13:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:13:34,470 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 06:13:34,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:13:34,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380356629] [2023-04-02 06:13:34,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380356629] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:13:34,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:13:34,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:13:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987356477] [2023-04-02 06:13:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:13:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:13:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:13:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:13:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:13:34,472 INFO L87 Difference]: Start difference. First operand 31883 states and 44513 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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 06:14:14,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:14:14,251 INFO L93 Difference]: Finished difference Result 115628 states and 159472 transitions. [2023-04-02 06:14:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:14:14,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2023-04-02 06:14:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:14:14,516 INFO L225 Difference]: With dead ends: 115628 [2023-04-02 06:14:14,516 INFO L226 Difference]: Without dead ends: 109777 [2023-04-02 06:14:14,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:14:14,670 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 2093 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:14:14,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 493 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:14:14,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109777 states.