/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.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:39:18,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:39:18,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:39:18,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:39:18,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:39:18,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:39:18,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:39:18,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:39:18,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:39:18,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:39:18,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:39:18,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:39:18,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:39:18,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:39:18,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:39:18,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:39:18,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:39:18,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:39:18,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:39:18,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:39:18,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:39:18,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:39:18,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:39:18,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:39:18,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:39:18,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:39:18,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:39:18,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:39:18,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:39:18,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:39:18,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:39:18,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:39:18,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:39:18,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:39:18,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:39:18,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:39:18,205 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 06:39:18,219 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:39:18,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:39:18,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:39:18,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:39:18,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:39:18,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:39:18,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:39:18,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:39:18,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:39:18,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:39:18,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:39:18,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:39:18,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:39:18,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:39:18,223 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:39:18,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:39:18,223 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:39:18,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:39:18,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:39:18,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:39:18,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:39:18,399 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:39:18,400 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:39:18,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-04-02 06:39:19,368 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:39:19,613 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:39:19,614 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-04-02 06:39:19,632 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1558847/5b7ee98fa20d48eab35de588eba0281a/FLAGfdd4a19ce [2023-04-02 06:39:19,647 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe1558847/5b7ee98fa20d48eab35de588eba0281a [2023-04-02 06:39:19,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:39:19,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:39:19,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:39:19,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:39:19,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:39:19,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:39:19" (1/1) ... [2023-04-02 06:39:19,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d29ab2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:19, skipping insertion in model container [2023-04-02 06:39:19,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:39:19" (1/1) ... [2023-04-02 06:39:19,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:39:19,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:39:19,922 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.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2023-04-02 06:39:19,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:39:19,986 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:39:20,058 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.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2023-04-02 06:39:20,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:39:20,127 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:39:20,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20 WrapperNode [2023-04-02 06:39:20,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:39:20,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:39:20,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:39:20,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:39:20,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:39:20,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:39:20,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:39:20,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:39:20,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (1/1) ... [2023-04-02 06:39:20,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:39:20,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:39:20,226 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 06:39:20,242 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 06:39:20,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:39:20,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:39:20,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:39:20,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:39:20,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:39:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:39:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:39:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:39:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:39:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:39:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:39:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:39:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:39:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:39:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:39:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:39:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:39:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:39:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:39:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:39:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:39:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:39:20,387 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:39:20,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:39:21,025 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:39:21,037 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:39:21,037 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:39:21,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:39:21 BoogieIcfgContainer [2023-04-02 06:39:21,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:39:21,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:39:21,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:39:21,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:39:21,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:39:19" (1/3) ... [2023-04-02 06:39:21,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cfd432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:39:21, skipping insertion in model container [2023-04-02 06:39:21,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:39:20" (2/3) ... [2023-04-02 06:39:21,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cfd432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:39:21, skipping insertion in model container [2023-04-02 06:39:21,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:39:21" (3/3) ... [2023-04-02 06:39:21,049 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-04-02 06:39:21,060 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:39:21,060 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:39:21,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:39:21,123 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;@556e6117, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:39:21,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:39:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 300 states, 253 states have (on average 1.6758893280632412) internal successors, (424), 295 states have internal predecessors, (424), 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 06:39:21,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 06:39:21,140 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:21,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:21,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:21,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash -972915248, now seen corresponding path program 1 times [2023-04-02 06:39:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:21,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012526440] [2023-04-02 06:39:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:21,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:21,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:21,756 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 06:39:21,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:21,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012526440] [2023-04-02 06:39:21,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012526440] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:21,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:21,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:39:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877775551] [2023-04-02 06:39:21,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:21,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:39:21,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:39:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:21,810 INFO L87 Difference]: Start difference. First operand has 300 states, 253 states have (on average 1.6758893280632412) internal successors, (424), 295 states have internal predecessors, (424), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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 06:39:22,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:22,673 INFO L93 Difference]: Finished difference Result 520 states and 774 transitions. [2023-04-02 06:39:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 06:39:22,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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 95 [2023-04-02 06:39:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:22,683 INFO L225 Difference]: With dead ends: 520 [2023-04-02 06:39:22,683 INFO L226 Difference]: Without dead ends: 252 [2023-04-02 06:39:22,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:39:22,691 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 115 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:22,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1109 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:39:22,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-04-02 06:39:22,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-04-02 06:39:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 248 states have (on average 1.4758064516129032) internal successors, (366), 248 states have internal predecessors, (366), 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 06:39:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 369 transitions. [2023-04-02 06:39:22,744 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 369 transitions. Word has length 95 [2023-04-02 06:39:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:22,744 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 369 transitions. [2023-04-02 06:39:22,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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 06:39:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 369 transitions. [2023-04-02 06:39:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:39:22,748 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:22,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:22,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:39:22,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:22,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:22,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1904327542, now seen corresponding path program 1 times [2023-04-02 06:39:22,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:22,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398361405] [2023-04-02 06:39:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:23,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:23,116 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 06:39:23,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:23,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398361405] [2023-04-02 06:39:23,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398361405] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:23,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:23,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:23,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018263674] [2023-04-02 06:39:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:23,120 INFO L87 Difference]: Start difference. First operand 252 states and 369 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 06:39:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:23,797 INFO L93 Difference]: Finished difference Result 565 states and 860 transitions. [2023-04-02 06:39:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:23,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 134 [2023-04-02 06:39:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:23,800 INFO L225 Difference]: With dead ends: 565 [2023-04-02 06:39:23,800 INFO L226 Difference]: Without dead ends: 367 [2023-04-02 06:39:23,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:23,801 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 204 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:23,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 650 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:39:23,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-04-02 06:39:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2023-04-02 06:39:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 361 states have (on average 1.5013850415512466) internal successors, (542), 361 states have internal predecessors, (542), 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 06:39:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 545 transitions. [2023-04-02 06:39:23,831 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 545 transitions. Word has length 134 [2023-04-02 06:39:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:23,831 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 545 transitions. [2023-04-02 06:39:23,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 06:39:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 545 transitions. [2023-04-02 06:39:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 06:39:23,833 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:23,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:23,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:39:23,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:23,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1315174903, now seen corresponding path program 1 times [2023-04-02 06:39:23,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:23,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900303732] [2023-04-02 06:39:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:23,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:24,069 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 06:39:24,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:24,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900303732] [2023-04-02 06:39:24,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900303732] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:24,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029736602] [2023-04-02 06:39:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:24,073 INFO L87 Difference]: Start difference. First operand 365 states and 545 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 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 06:39:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:24,834 INFO L93 Difference]: Finished difference Result 874 states and 1343 transitions. [2023-04-02 06:39:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 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 136 [2023-04-02 06:39:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:24,837 INFO L225 Difference]: With dead ends: 874 [2023-04-02 06:39:24,837 INFO L226 Difference]: Without dead ends: 569 [2023-04-02 06:39:24,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:24,838 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 191 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:24,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 706 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:39:24,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-04-02 06:39:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2023-04-02 06:39:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 563 states have (on average 1.5204262877442274) internal successors, (856), 563 states have internal predecessors, (856), 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 06:39:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 859 transitions. [2023-04-02 06:39:24,867 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 859 transitions. Word has length 136 [2023-04-02 06:39:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:24,868 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 859 transitions. [2023-04-02 06:39:24,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 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 06:39:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 859 transitions. [2023-04-02 06:39:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 06:39:24,870 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:24,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:24,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:39:24,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:24,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash -438757375, now seen corresponding path program 1 times [2023-04-02 06:39:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457211535] [2023-04-02 06:39:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:25,120 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 06:39:25,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:25,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457211535] [2023-04-02 06:39:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457211535] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:25,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:25,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:25,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508911059] [2023-04-02 06:39:25,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:25,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:25,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:25,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:25,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:25,122 INFO L87 Difference]: Start difference. First operand 567 states and 859 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:39:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:25,898 INFO L93 Difference]: Finished difference Result 1422 states and 2195 transitions. [2023-04-02 06:39:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 138 [2023-04-02 06:39:25,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:25,903 INFO L225 Difference]: With dead ends: 1422 [2023-04-02 06:39:25,903 INFO L226 Difference]: Without dead ends: 921 [2023-04-02 06:39:25,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:25,914 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 178 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:25,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 670 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:39:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-04-02 06:39:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 919. [2023-04-02 06:39:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 915 states have (on average 1.530054644808743) internal successors, (1400), 915 states have internal predecessors, (1400), 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 06:39:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1403 transitions. [2023-04-02 06:39:25,962 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1403 transitions. Word has length 138 [2023-04-02 06:39:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:25,962 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1403 transitions. [2023-04-02 06:39:25,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 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 06:39:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1403 transitions. [2023-04-02 06:39:25,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 06:39:25,966 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:25,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:25,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:39:25,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:25,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:25,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1271644285, now seen corresponding path program 1 times [2023-04-02 06:39:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:25,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823633128] [2023-04-02 06:39:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:26,187 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 06:39:26,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823633128] [2023-04-02 06:39:26,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823633128] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:26,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:26,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:26,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729766361] [2023-04-02 06:39:26,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:26,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:26,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:26,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:26,189 INFO L87 Difference]: Start difference. First operand 919 states and 1403 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 06:39:26,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:26,888 INFO L93 Difference]: Finished difference Result 2364 states and 3647 transitions. [2023-04-02 06:39:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:26,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 140 [2023-04-02 06:39:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:26,896 INFO L225 Difference]: With dead ends: 2364 [2023-04-02 06:39:26,896 INFO L226 Difference]: Without dead ends: 1517 [2023-04-02 06:39:26,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:26,901 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 165 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:26,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 590 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:39:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2023-04-02 06:39:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1515. [2023-04-02 06:39:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1511 states have (on average 1.5301125082726672) internal successors, (2312), 1511 states have internal predecessors, (2312), 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 06:39:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2315 transitions. [2023-04-02 06:39:26,997 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2315 transitions. Word has length 140 [2023-04-02 06:39:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:26,997 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2315 transitions. [2023-04-02 06:39:26,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 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 06:39:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2315 transitions. [2023-04-02 06:39:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 06:39:27,001 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:27,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:27,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:39:27,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:27,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1116060757, now seen corresponding path program 1 times [2023-04-02 06:39:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112755255] [2023-04-02 06:39:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:27,218 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 06:39:27,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:27,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112755255] [2023-04-02 06:39:27,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112755255] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:27,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:27,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411572713] [2023-04-02 06:39:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:27,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:27,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:27,220 INFO L87 Difference]: Start difference. First operand 1515 states and 2315 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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 06:39:27,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:27,922 INFO L93 Difference]: Finished difference Result 3926 states and 6023 transitions. [2023-04-02 06:39:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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 142 [2023-04-02 06:39:27,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:27,930 INFO L225 Difference]: With dead ends: 3926 [2023-04-02 06:39:27,930 INFO L226 Difference]: Without dead ends: 2489 [2023-04-02 06:39:27,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:27,933 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 152 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:27,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 570 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:39:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2023-04-02 06:39:28,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2487. [2023-04-02 06:39:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2483 states have (on average 1.5207410390656464) internal successors, (3776), 2483 states have internal predecessors, (3776), 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 06:39:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3779 transitions. [2023-04-02 06:39:28,043 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3779 transitions. Word has length 142 [2023-04-02 06:39:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:28,044 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 3779 transitions. [2023-04-02 06:39:28,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 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 06:39:28,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3779 transitions. [2023-04-02 06:39:28,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 06:39:28,050 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:28,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:28,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:39:28,050 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:28,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:28,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1243453853, now seen corresponding path program 1 times [2023-04-02 06:39:28,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:28,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781230560] [2023-04-02 06:39:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:28,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:28,335 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 06:39:28,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:28,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781230560] [2023-04-02 06:39:28,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781230560] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:28,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:28,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:28,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446528872] [2023-04-02 06:39:28,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:28,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:28,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:28,337 INFO L87 Difference]: Start difference. First operand 2487 states and 3779 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 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 06:39:29,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:29,184 INFO L93 Difference]: Finished difference Result 6392 states and 9695 transitions. [2023-04-02 06:39:29,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:29,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 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 144 [2023-04-02 06:39:29,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:29,197 INFO L225 Difference]: With dead ends: 6392 [2023-04-02 06:39:29,197 INFO L226 Difference]: Without dead ends: 3989 [2023-04-02 06:39:29,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:29,202 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 139 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:29,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 562 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:39:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2023-04-02 06:39:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3987. [2023-04-02 06:39:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3987 states, 3983 states have (on average 1.5003766005523476) internal successors, (5976), 3983 states have internal predecessors, (5976), 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 06:39:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 5979 transitions. [2023-04-02 06:39:29,428 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 5979 transitions. Word has length 144 [2023-04-02 06:39:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:29,428 INFO L495 AbstractCegarLoop]: Abstraction has 3987 states and 5979 transitions. [2023-04-02 06:39:29,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 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 06:39:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 5979 transitions. [2023-04-02 06:39:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-02 06:39:29,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:29,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:29,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:39:29,437 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:29,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1802111247, now seen corresponding path program 1 times [2023-04-02 06:39:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691717300] [2023-04-02 06:39:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:29,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:29,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:29,779 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 06:39:29,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:29,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691717300] [2023-04-02 06:39:29,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691717300] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:29,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:29,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:39:29,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996836143] [2023-04-02 06:39:29,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:29,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:39:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:39:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:29,782 INFO L87 Difference]: Start difference. First operand 3987 states and 5979 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 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 06:39:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:33,389 INFO L93 Difference]: Finished difference Result 42060 states and 62856 transitions. [2023-04-02 06:39:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:39:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 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 146 [2023-04-02 06:39:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:33,485 INFO L225 Difference]: With dead ends: 42060 [2023-04-02 06:39:33,486 INFO L226 Difference]: Without dead ends: 38162 [2023-04-02 06:39:33,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:39:33,501 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 2641 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2641 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:33,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2641 Valid, 3463 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:39:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38162 states. [2023-04-02 06:39:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38162 to 7820. [2023-04-02 06:39:34,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7820 states, 7816 states have (on average 1.4865660184237461) internal successors, (11619), 7816 states have internal predecessors, (11619), 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 06:39:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7820 states to 7820 states and 11622 transitions. [2023-04-02 06:39:34,640 INFO L78 Accepts]: Start accepts. Automaton has 7820 states and 11622 transitions. Word has length 146 [2023-04-02 06:39:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:34,641 INFO L495 AbstractCegarLoop]: Abstraction has 7820 states and 11622 transitions. [2023-04-02 06:39:34,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 8 states have internal predecessors, (143), 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 06:39:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 7820 states and 11622 transitions. [2023-04-02 06:39:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 06:39:34,657 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:34,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:34,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:39:34,657 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:34,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash 597811441, now seen corresponding path program 1 times [2023-04-02 06:39:34,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:34,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592997099] [2023-04-02 06:39:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:34,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:34,913 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 06:39:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:34,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592997099] [2023-04-02 06:39:34,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592997099] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:34,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:34,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442787627] [2023-04-02 06:39:34,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:34,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:34,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:34,918 INFO L87 Difference]: Start difference. First operand 7820 states and 11622 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 06:39:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:36,872 INFO L93 Difference]: Finished difference Result 18307 states and 27272 transitions. [2023-04-02 06:39:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-04-02 06:39:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:36,904 INFO L225 Difference]: With dead ends: 18307 [2023-04-02 06:39:36,905 INFO L226 Difference]: Without dead ends: 10575 [2023-04-02 06:39:36,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:36,917 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 224 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:36,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 699 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:39:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10575 states. [2023-04-02 06:39:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10575 to 10573. [2023-04-02 06:39:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10573 states, 10569 states have (on average 1.4779070867631754) internal successors, (15620), 10569 states have internal predecessors, (15620), 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 06:39:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10573 states to 10573 states and 15623 transitions. [2023-04-02 06:39:37,995 INFO L78 Accepts]: Start accepts. Automaton has 10573 states and 15623 transitions. Word has length 150 [2023-04-02 06:39:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:37,995 INFO L495 AbstractCegarLoop]: Abstraction has 10573 states and 15623 transitions. [2023-04-02 06:39:37,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 06:39:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 10573 states and 15623 transitions. [2023-04-02 06:39:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 06:39:38,015 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:38,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:39:38,015 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:38,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -428915374, now seen corresponding path program 1 times [2023-04-02 06:39:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:38,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655919981] [2023-04-02 06:39:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:38,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:38,460 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 06:39:38,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:38,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655919981] [2023-04-02 06:39:38,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655919981] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:38,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:38,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:39:38,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640040913] [2023-04-02 06:39:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:38,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:39:38,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:39:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:38,462 INFO L87 Difference]: Start difference. First operand 10573 states and 15623 transitions. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 8 states have internal predecessors, (147), 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 06:39:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:40,784 INFO L93 Difference]: Finished difference Result 21059 states and 31145 transitions. [2023-04-02 06:39:40,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:39:40,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 8 states have internal predecessors, (147), 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 150 [2023-04-02 06:39:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:40,805 INFO L225 Difference]: With dead ends: 21059 [2023-04-02 06:39:40,805 INFO L226 Difference]: Without dead ends: 10575 [2023-04-02 06:39:40,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:39:40,826 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 926 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:40,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 1371 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:39:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10575 states. [2023-04-02 06:39:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10575 to 10573. [2023-04-02 06:39:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10573 states, 10569 states have (on average 1.4626738575078058) internal successors, (15459), 10569 states have internal predecessors, (15459), 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 06:39:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10573 states to 10573 states and 15462 transitions. [2023-04-02 06:39:41,961 INFO L78 Accepts]: Start accepts. Automaton has 10573 states and 15462 transitions. Word has length 150 [2023-04-02 06:39:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:41,961 INFO L495 AbstractCegarLoop]: Abstraction has 10573 states and 15462 transitions. [2023-04-02 06:39:41,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 8 states have internal predecessors, (147), 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 06:39:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 10573 states and 15462 transitions. [2023-04-02 06:39:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 06:39:41,983 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:41,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:41,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:39:41,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:41,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:41,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1337280900, now seen corresponding path program 1 times [2023-04-02 06:39:41,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:41,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153356118] [2023-04-02 06:39:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:41,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:42,201 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 06:39:42,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:42,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153356118] [2023-04-02 06:39:42,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153356118] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:42,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:42,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:42,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625143993] [2023-04-02 06:39:42,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:42,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:42,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:42,202 INFO L87 Difference]: Start difference. First operand 10573 states and 15462 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 06:39:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:44,956 INFO L93 Difference]: Finished difference Result 30301 states and 44297 transitions. [2023-04-02 06:39:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:39:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 151 [2023-04-02 06:39:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:44,996 INFO L225 Difference]: With dead ends: 30301 [2023-04-02 06:39:44,996 INFO L226 Difference]: Without dead ends: 20965 [2023-04-02 06:39:45,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:39:45,021 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 205 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:45,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 391 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:39:45,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20965 states. [2023-04-02 06:39:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20965 to 20963. [2023-04-02 06:39:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20963 states, 20959 states have (on average 1.4556515100911303) internal successors, (30509), 20959 states have internal predecessors, (30509), 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 06:39:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20963 states to 20963 states and 30512 transitions. [2023-04-02 06:39:47,466 INFO L78 Accepts]: Start accepts. Automaton has 20963 states and 30512 transitions. Word has length 151 [2023-04-02 06:39:47,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:47,466 INFO L495 AbstractCegarLoop]: Abstraction has 20963 states and 30512 transitions. [2023-04-02 06:39:47,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 06:39:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 20963 states and 30512 transitions. [2023-04-02 06:39:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 06:39:47,500 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:47,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:47,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:39:47,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:47,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1520520503, now seen corresponding path program 1 times [2023-04-02 06:39:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:47,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309857591] [2023-04-02 06:39:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:47,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:47,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:47,704 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 06:39:47,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:47,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309857591] [2023-04-02 06:39:47,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309857591] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:47,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:47,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:47,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766833473] [2023-04-02 06:39:47,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:47,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:47,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:47,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:47,705 INFO L87 Difference]: Start difference. First operand 20963 states and 30512 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 06:39:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:52,738 INFO L93 Difference]: Finished difference Result 59988 states and 87185 transitions. [2023-04-02 06:39:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:39:52,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 151 [2023-04-02 06:39:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:52,800 INFO L225 Difference]: With dead ends: 59988 [2023-04-02 06:39:52,801 INFO L226 Difference]: Without dead ends: 41590 [2023-04-02 06:39:52,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:52,833 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 188 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:52,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 403 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:39:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41590 states. [2023-04-02 06:39:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41590 to 41588. [2023-04-02 06:39:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41588 states, 41584 states have (on average 1.4468064640246248) internal successors, (60164), 41584 states have internal predecessors, (60164), 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 06:39:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41588 states to 41588 states and 60167 transitions. [2023-04-02 06:39:57,625 INFO L78 Accepts]: Start accepts. Automaton has 41588 states and 60167 transitions. Word has length 151 [2023-04-02 06:39:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:57,625 INFO L495 AbstractCegarLoop]: Abstraction has 41588 states and 60167 transitions. [2023-04-02 06:39:57,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 06:39:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 41588 states and 60167 transitions. [2023-04-02 06:39:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 06:39:57,686 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:57,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:57,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:39:57,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:57,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:57,687 INFO L85 PathProgramCache]: Analyzing trace with hash 441609426, now seen corresponding path program 1 times [2023-04-02 06:39:57,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:57,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935791059] [2023-04-02 06:39:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:57,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:58,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:58,059 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 06:39:58,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:58,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935791059] [2023-04-02 06:39:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935791059] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:58,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:58,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:39:58,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117981166] [2023-04-02 06:39:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:58,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:39:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:58,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:39:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:58,061 INFO L87 Difference]: Start difference. First operand 41588 states and 60167 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 06:40:27,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:27,637 INFO L93 Difference]: Finished difference Result 256018 states and 370510 transitions. [2023-04-02 06:40:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:40:27,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 151 [2023-04-02 06:40:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:28,322 INFO L225 Difference]: With dead ends: 256018 [2023-04-02 06:40:28,322 INFO L226 Difference]: Without dead ends: 222480 [2023-04-02 06:40:28,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:40:28,403 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1994 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:28,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 2237 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:40:28,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222480 states. [2023-04-02 06:40:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222480 to 77460. [2023-04-02 06:40:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77460 states, 77456 states have (on average 1.4398368105763273) internal successors, (111524), 77456 states have internal predecessors, (111524), 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 06:40:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77460 states to 77460 states and 111527 transitions. [2023-04-02 06:40:41,599 INFO L78 Accepts]: Start accepts. Automaton has 77460 states and 111527 transitions. Word has length 151 [2023-04-02 06:40:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:41,600 INFO L495 AbstractCegarLoop]: Abstraction has 77460 states and 111527 transitions. [2023-04-02 06:40:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 06:40:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 77460 states and 111527 transitions. [2023-04-02 06:40:41,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 06:40:41,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:41,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:40:41,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:40:41,720 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:41,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1832675242, now seen corresponding path program 1 times [2023-04-02 06:40:41,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:41,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755439804] [2023-04-02 06:40:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:41,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:42,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:42,035 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 06:40:42,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755439804] [2023-04-02 06:40:42,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755439804] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:42,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:42,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:40:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113347636] [2023-04-02 06:40:42,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:42,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:40:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:40:42,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:40:42,037 INFO L87 Difference]: Start difference. First operand 77460 states and 111527 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 06:41:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:41:21,073 INFO L93 Difference]: Finished difference Result 291334 states and 421214 transitions. [2023-04-02 06:41:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:41:21,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 151 [2023-04-02 06:41:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:41:21,968 INFO L225 Difference]: With dead ends: 291334 [2023-04-02 06:41:21,968 INFO L226 Difference]: Without dead ends: 257796 [2023-04-02 06:41:22,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:41:22,071 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 2164 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:41:22,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2164 Valid, 2195 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:41:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257796 states. [2023-04-02 06:41:44,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257796 to 129132. [2023-04-02 06:41:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129132 states, 129128 states have (on average 1.4347624062945294) internal successors, (185268), 129128 states have internal predecessors, (185268), 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 06:41:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129132 states to 129132 states and 185271 transitions. [2023-04-02 06:41:44,586 INFO L78 Accepts]: Start accepts. Automaton has 129132 states and 185271 transitions. Word has length 151 [2023-04-02 06:41:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:41:44,586 INFO L495 AbstractCegarLoop]: Abstraction has 129132 states and 185271 transitions. [2023-04-02 06:41:44,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 06:41:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 129132 states and 185271 transitions. [2023-04-02 06:41:44,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 06:41:44,729 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:41:44,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:41:44,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:41:44,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:41:44,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:41:44,729 INFO L85 PathProgramCache]: Analyzing trace with hash -555382575, now seen corresponding path program 1 times [2023-04-02 06:41:44,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:41:44,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759030796] [2023-04-02 06:41:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:41:44,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:41:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:41:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:45,073 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 06:41:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:41:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759030796] [2023-04-02 06:41:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759030796] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:41:45,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:41:45,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:41:45,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468222799] [2023-04-02 06:41:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:41:45,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:41:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:41:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:41:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:41:45,074 INFO L87 Difference]: Start difference. First operand 129132 states and 185271 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 06:42:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:31,875 INFO L93 Difference]: Finished difference Result 325286 states and 469918 transitions. [2023-04-02 06:42:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:42:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 151 [2023-04-02 06:42:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:32,749 INFO L225 Difference]: With dead ends: 325286 [2023-04-02 06:42:32,749 INFO L226 Difference]: Without dead ends: 291748 [2023-04-02 06:42:32,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:42:32,850 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 2135 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:32,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 2303 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:42:33,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291748 states. [2023-04-02 06:43:01,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291748 to 164256. [2023-04-02 06:43:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164256 states, 164252 states have (on average 1.4347222560455886) internal successors, (235656), 164252 states have internal predecessors, (235656), 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 06:43:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164256 states to 164256 states and 235659 transitions. [2023-04-02 06:43:02,211 INFO L78 Accepts]: Start accepts. Automaton has 164256 states and 235659 transitions. Word has length 151 [2023-04-02 06:43:02,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:02,211 INFO L495 AbstractCegarLoop]: Abstraction has 164256 states and 235659 transitions. [2023-04-02 06:43:02,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 06:43:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 164256 states and 235659 transitions. [2023-04-02 06:43:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 06:43:02,633 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:02,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:43:02,633 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:02,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1210604033, now seen corresponding path program 1 times [2023-04-02 06:43:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141572271] [2023-04-02 06:43:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:02,939 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 06:43:02,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141572271] [2023-04-02 06:43:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141572271] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:02,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:02,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:43:02,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033633629] [2023-04-02 06:43:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:02,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:43:02,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:43:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:43:02,950 INFO L87 Difference]: Start difference. First operand 164256 states and 235659 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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)