/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.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:56:49,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:56:49,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:56:49,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:56:49,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:56:49,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:56:49,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:56:49,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:56:49,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:56:49,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:56:49,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:56:49,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:56:49,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:56:49,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:56:49,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:56:49,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:56:49,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:56:49,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:56:49,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:56:49,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:56:49,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:56:49,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:56:49,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:56:49,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:56:49,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:56:49,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:56:49,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:56:49,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:56:49,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:56:49,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:56:49,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:56:49,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:56:49,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:56:49,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:56:49,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:56:49,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:56:49,674 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 [2023-03-31 01:56:49,695 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:56:49,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:56:49,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:56:49,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:56:49,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:56:49,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:56:49,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:56:49,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:56:49,698 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:56:49,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:56:49,698 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:56:49,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:56:49,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:56:49,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:56:49,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:56:49,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:56:49,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:56:49,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:56:49,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:56:49,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:56:49,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:56:49,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:56:49,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:56:49,701 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:56:49,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:56:49,701 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:56:49,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:56:49,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:56:49,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:56:49,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:56:49,887 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:56:49,887 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:56:49,888 INFO L432 ainManager$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.v+cfa-reducer.c [2023-03-31 01:56:50,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:56:51,163 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:56:51,164 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-03-31 01:56:51,179 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3957396d/a8363b99d5d6487494b507e4a239ab75/FLAG8d951b0d6 [2023-03-31 01:56:51,189 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3957396d/a8363b99d5d6487494b507e4a239ab75 [2023-03-31 01:56:51,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:56:51,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:56:51,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:56:51,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:56:51,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:56:51,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a28af0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51, skipping insertion in model container [2023-03-31 01:56:51,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:56:51,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:56:51,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6694,6707] [2023-03-31 01:56:51,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:56:51,422 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:56:51,459 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.v+cfa-reducer.c[6694,6707] [2023-03-31 01:56:51,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:56:51,489 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:56:51,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51 WrapperNode [2023-03-31 01:56:51,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:56:51,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:56:51,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:56:51,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:56:51,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,535 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:56:51,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:56:51,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:56:51,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:56:51,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (1/1) ... [2023-03-31 01:56:51,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:56:51,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:56:51,573 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) [2023-03-31 01:56:51,581 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 [2023-03-31 01:56:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:56:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:56:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:56:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:56:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:56:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:56:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:56:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:56:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:56:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:56:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:56:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:56:51,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:56:51,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:56:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:56:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:56:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:56:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:56:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:56:51,750 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:56:51,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:56:52,265 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:56:52,271 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:56:52,271 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:56:52,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:56:52 BoogieIcfgContainer [2023-03-31 01:56:52,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:56:52,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:56:52,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:56:52,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:56:52,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:56:51" (1/3) ... [2023-03-31 01:56:52,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a45c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:56:52, skipping insertion in model container [2023-03-31 01:56:52,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:56:51" (2/3) ... [2023-03-31 01:56:52,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a45c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:56:52, skipping insertion in model container [2023-03-31 01:56:52,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:56:52" (3/3) ... [2023-03-31 01:56:52,279 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-03-31 01:56:52,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:56:52,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:56:52,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:56:52,361 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;@6ff9d02a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:56:52,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:56:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 117 states have internal predecessors, (200), 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) [2023-03-31 01:56:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-03-31 01:56:52,385 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:52,385 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] [2023-03-31 01:56:52,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:52,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2131664305, now seen corresponding path program 1 times [2023-03-31 01:56:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885877857] [2023-03-31 01:56:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:52,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:52,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:52,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885877857] [2023-03-31 01:56:52,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885877857] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:52,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:52,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:56:52,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894210631] [2023-03-31 01:56:52,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:56:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:56:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:56:53,037 INFO L87 Difference]: Start difference. First operand has 122 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 117 states have internal predecessors, (200), 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 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-03-31 01:56:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:53,807 INFO L93 Difference]: Finished difference Result 264 states and 423 transitions. [2023-03-31 01:56:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:56:53,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 76 [2023-03-31 01:56:53,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:53,822 INFO L225 Difference]: With dead ends: 264 [2023-03-31 01:56:53,822 INFO L226 Difference]: Without dead ends: 177 [2023-03-31 01:56:53,826 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 [2023-03-31 01:56:53,829 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 144 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:53,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 417 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 01:56:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-03-31 01:56:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2023-03-31 01:56:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.432748538011696) internal successors, (245), 171 states have internal predecessors, (245), 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) [2023-03-31 01:56:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 248 transitions. [2023-03-31 01:56:53,901 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 248 transitions. Word has length 76 [2023-03-31 01:56:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:53,902 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 248 transitions. [2023-03-31 01:56:53,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-03-31 01:56:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 248 transitions. [2023-03-31 01:56:53,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-03-31 01:56:53,903 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:53,904 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] [2023-03-31 01:56:53,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:56:53,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:53,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1353846814, now seen corresponding path program 1 times [2023-03-31 01:56:53,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:53,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29306070] [2023-03-31 01:56:53,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:53,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:54,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:54,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29306070] [2023-03-31 01:56:54,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29306070] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:54,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:54,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:56:54,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434134848] [2023-03-31 01:56:54,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:54,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:56:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:54,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:56:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:56:54,172 INFO L87 Difference]: Start difference. First operand 175 states and 248 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-03-31 01:56:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:54,699 INFO L93 Difference]: Finished difference Result 415 states and 624 transitions. [2023-03-31 01:56:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:56:54,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 77 [2023-03-31 01:56:54,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:54,701 INFO L225 Difference]: With dead ends: 415 [2023-03-31 01:56:54,701 INFO L226 Difference]: Without dead ends: 287 [2023-03-31 01:56:54,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:56:54,703 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 96 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:54,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 345 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:56:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-03-31 01:56:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2023-03-31 01:56:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 281 states have (on average 1.4839857651245552) internal successors, (417), 281 states have internal predecessors, (417), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 420 transitions. [2023-03-31 01:56:54,731 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 420 transitions. Word has length 77 [2023-03-31 01:56:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:54,732 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 420 transitions. [2023-03-31 01:56:54,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-03-31 01:56:54,732 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 420 transitions. [2023-03-31 01:56:54,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 01:56:54,737 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:54,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:54,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:56:54,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:54,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:54,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1577921795, now seen corresponding path program 1 times [2023-03-31 01:56:54,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:54,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845893137] [2023-03-31 01:56:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:54,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:54,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:54,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845893137] [2023-03-31 01:56:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845893137] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:54,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:54,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:56:54,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304431710] [2023-03-31 01:56:54,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:54,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:56:54,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:54,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:56:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:56:54,974 INFO L87 Difference]: Start difference. First operand 285 states and 420 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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) [2023-03-31 01:56:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:55,432 INFO L93 Difference]: Finished difference Result 729 states and 1114 transitions. [2023-03-31 01:56:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:56:55,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 78 [2023-03-31 01:56:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:55,435 INFO L225 Difference]: With dead ends: 729 [2023-03-31 01:56:55,435 INFO L226 Difference]: Without dead ends: 491 [2023-03-31 01:56:55,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:56:55,443 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 91 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:55,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 341 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:56:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-03-31 01:56:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2023-03-31 01:56:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 485 states have (on average 1.511340206185567) internal successors, (733), 485 states have internal predecessors, (733), 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) [2023-03-31 01:56:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 736 transitions. [2023-03-31 01:56:55,495 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 736 transitions. Word has length 78 [2023-03-31 01:56:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:55,497 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 736 transitions. [2023-03-31 01:56:55,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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) [2023-03-31 01:56:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 736 transitions. [2023-03-31 01:56:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-03-31 01:56:55,504 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:55,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:55,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:56:55,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:55,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1778711794, now seen corresponding path program 1 times [2023-03-31 01:56:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921225684] [2023-03-31 01:56:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:55,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:55,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921225684] [2023-03-31 01:56:55,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921225684] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:55,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:55,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:56:55,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21991559] [2023-03-31 01:56:55,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:55,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:56:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:56:55,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:56:55,735 INFO L87 Difference]: Start difference. First operand 489 states and 736 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:56,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:56,189 INFO L93 Difference]: Finished difference Result 1309 states and 2010 transitions. [2023-03-31 01:56:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:56:56,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2023-03-31 01:56:56,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:56,193 INFO L225 Difference]: With dead ends: 1309 [2023-03-31 01:56:56,193 INFO L226 Difference]: Without dead ends: 867 [2023-03-31 01:56:56,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:56:56,194 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 86 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:56,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 337 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:56:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-03-31 01:56:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 865. [2023-03-31 01:56:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 861 states have (on average 1.5203252032520325) internal successors, (1309), 861 states have internal predecessors, (1309), 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) [2023-03-31 01:56:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1312 transitions. [2023-03-31 01:56:56,250 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1312 transitions. Word has length 79 [2023-03-31 01:56:56,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:56,251 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1312 transitions. [2023-03-31 01:56:56,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:56,251 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1312 transitions. [2023-03-31 01:56:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-03-31 01:56:56,252 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:56,252 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] [2023-03-31 01:56:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:56:56,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:56,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash -818896637, now seen corresponding path program 1 times [2023-03-31 01:56:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:56,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388399578] [2023-03-31 01:56:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:56,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:56,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388399578] [2023-03-31 01:56:56,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388399578] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:56,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:56,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:56:56,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279824272] [2023-03-31 01:56:56,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:56,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:56:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:56,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:56:56,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:56:56,479 INFO L87 Difference]: Start difference. First operand 865 states and 1312 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-03-31 01:56:56,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:56,999 INFO L93 Difference]: Finished difference Result 2373 states and 3634 transitions. [2023-03-31 01:56:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:56:56,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-03-31 01:56:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:57,005 INFO L225 Difference]: With dead ends: 2373 [2023-03-31 01:56:57,005 INFO L226 Difference]: Without dead ends: 1555 [2023-03-31 01:56:57,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:56:57,008 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 81 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:57,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 333 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:56:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2023-03-31 01:56:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1553. [2023-03-31 01:56:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1549 states have (on average 1.5164622336991607) internal successors, (2349), 1549 states have internal predecessors, (2349), 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) [2023-03-31 01:56:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2352 transitions. [2023-03-31 01:56:57,101 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2352 transitions. Word has length 80 [2023-03-31 01:56:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:57,102 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2352 transitions. [2023-03-31 01:56:57,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-03-31 01:56:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2352 transitions. [2023-03-31 01:56:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-03-31 01:56:57,102 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:57,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:57,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:56:57,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:57,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2128077866, now seen corresponding path program 1 times [2023-03-31 01:56:57,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:57,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994578951] [2023-03-31 01:56:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:57,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:57,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:57,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994578951] [2023-03-31 01:56:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994578951] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:57,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:57,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:56:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410061996] [2023-03-31 01:56:57,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:57,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:56:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:56:57,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:56:57,342 INFO L87 Difference]: Start difference. First operand 1553 states and 2352 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:56:57,914 INFO L93 Difference]: Finished difference Result 4309 states and 6546 transitions. [2023-03-31 01:56:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:56:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-03-31 01:56:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:56:57,924 INFO L225 Difference]: With dead ends: 4309 [2023-03-31 01:56:57,924 INFO L226 Difference]: Without dead ends: 2803 [2023-03-31 01:56:57,927 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 [2023-03-31 01:56:57,927 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 76 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:56:57,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 329 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:56:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2023-03-31 01:56:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2801. [2023-03-31 01:56:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2797 states have (on average 1.5033964962459778) internal successors, (4205), 2797 states have internal predecessors, (4205), 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) [2023-03-31 01:56:58,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 4208 transitions. [2023-03-31 01:56:58,097 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 4208 transitions. Word has length 81 [2023-03-31 01:56:58,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:56:58,097 INFO L495 AbstractCegarLoop]: Abstraction has 2801 states and 4208 transitions. [2023-03-31 01:56:58,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:56:58,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 4208 transitions. [2023-03-31 01:56:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-03-31 01:56:58,098 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:56:58,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:56:58,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:56:58,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:56:58,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:56:58,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2041750148, now seen corresponding path program 1 times [2023-03-31 01:56:58,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:56:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981348333] [2023-03-31 01:56:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:56:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:56:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:56:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:56:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:56:58,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:56:58,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981348333] [2023-03-31 01:56:58,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981348333] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:56:58,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:56:58,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:56:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154487735] [2023-03-31 01:56:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:56:58,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:56:58,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:56:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:56:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:56:58,378 INFO L87 Difference]: Start difference. First operand 2801 states and 4208 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 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) [2023-03-31 01:57:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:01,156 INFO L93 Difference]: Finished difference Result 35849 states and 54140 transitions. [2023-03-31 01:57:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 01:57:01,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 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 82 [2023-03-31 01:57:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:01,266 INFO L225 Difference]: With dead ends: 35849 [2023-03-31 01:57:01,267 INFO L226 Difference]: Without dead ends: 33095 [2023-03-31 01:57:01,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-03-31 01:57:01,283 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1610 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:01,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 3055 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:57:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33095 states. [2023-03-31 01:57:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33095 to 5553. [2023-03-31 01:57:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5549 states have (on average 1.495945215354118) internal successors, (8301), 5549 states have internal predecessors, (8301), 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) [2023-03-31 01:57:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 8304 transitions. [2023-03-31 01:57:02,252 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 8304 transitions. Word has length 82 [2023-03-31 01:57:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:02,253 INFO L495 AbstractCegarLoop]: Abstraction has 5553 states and 8304 transitions. [2023-03-31 01:57:02,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 states have internal predecessors, (79), 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) [2023-03-31 01:57:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 8304 transitions. [2023-03-31 01:57:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-03-31 01:57:02,253 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:02,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:02,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:57:02,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:02,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash -215028457, now seen corresponding path program 1 times [2023-03-31 01:57:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:02,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122203054] [2023-03-31 01:57:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:02,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:02,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122203054] [2023-03-31 01:57:02,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122203054] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:02,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:02,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:57:02,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880787112] [2023-03-31 01:57:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:57:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:57:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:57:02,437 INFO L87 Difference]: Start difference. First operand 5553 states and 8304 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-03-31 01:57:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:03,626 INFO L93 Difference]: Finished difference Result 13783 states and 20660 transitions. [2023-03-31 01:57:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:57:03,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 84 [2023-03-31 01:57:03,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:03,640 INFO L225 Difference]: With dead ends: 13783 [2023-03-31 01:57:03,641 INFO L226 Difference]: Without dead ends: 8277 [2023-03-31 01:57:03,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:57:03,648 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 70 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:03,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 297 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:57:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2023-03-31 01:57:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 8275. [2023-03-31 01:57:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8275 states, 8271 states have (on average 1.4913553379276991) internal successors, (12335), 8271 states have internal predecessors, (12335), 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) [2023-03-31 01:57:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 12338 transitions. [2023-03-31 01:57:04,670 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 12338 transitions. Word has length 84 [2023-03-31 01:57:04,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:04,670 INFO L495 AbstractCegarLoop]: Abstraction has 8275 states and 12338 transitions. [2023-03-31 01:57:04,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-03-31 01:57:04,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 12338 transitions. [2023-03-31 01:57:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-03-31 01:57:04,672 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:04,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:04,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:57:04,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:04,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash -194979114, now seen corresponding path program 1 times [2023-03-31 01:57:04,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:04,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139559735] [2023-03-31 01:57:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:04,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:05,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:05,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139559735] [2023-03-31 01:57:05,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139559735] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:05,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:05,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:57:05,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970188423] [2023-03-31 01:57:05,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:05,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:57:05,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:05,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:57:05,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:05,134 INFO L87 Difference]: Start difference. First operand 8275 states and 12338 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 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) [2023-03-31 01:57:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:06,665 INFO L93 Difference]: Finished difference Result 16503 states and 24628 transitions. [2023-03-31 01:57:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:57:06,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 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 84 [2023-03-31 01:57:06,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:06,683 INFO L225 Difference]: With dead ends: 16503 [2023-03-31 01:57:06,683 INFO L226 Difference]: Without dead ends: 8277 [2023-03-31 01:57:06,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-03-31 01:57:06,696 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 382 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:06,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 685 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:57:06,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2023-03-31 01:57:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 8275. [2023-03-31 01:57:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8275 states, 8271 states have (on average 1.4797485189215331) internal successors, (12239), 8271 states have internal predecessors, (12239), 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) [2023-03-31 01:57:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 12242 transitions. [2023-03-31 01:57:07,602 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 12242 transitions. Word has length 84 [2023-03-31 01:57:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:07,602 INFO L495 AbstractCegarLoop]: Abstraction has 8275 states and 12242 transitions. [2023-03-31 01:57:07,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 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) [2023-03-31 01:57:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 12242 transitions. [2023-03-31 01:57:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-03-31 01:57:07,604 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:07,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:07,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:57:07,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:07,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1751294553, now seen corresponding path program 1 times [2023-03-31 01:57:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:07,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085590793] [2023-03-31 01:57:07,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:07,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:07,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:07,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085590793] [2023-03-31 01:57:07,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085590793] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:07,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:07,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:57:07,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072504445] [2023-03-31 01:57:07,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:07,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:07,858 INFO L87 Difference]: Start difference. First operand 8275 states and 12242 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:09,151 INFO L93 Difference]: Finished difference Result 16501 states and 24435 transitions. [2023-03-31 01:57:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:09,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-03-31 01:57:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:09,164 INFO L225 Difference]: With dead ends: 16501 [2023-03-31 01:57:09,164 INFO L226 Difference]: Without dead ends: 8275 [2023-03-31 01:57:09,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:09,174 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 333 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:09,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 141 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:57:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2023-03-31 01:57:10,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8275. [2023-03-31 01:57:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8275 states, 8271 states have (on average 1.468141699915367) internal successors, (12143), 8271 states have internal predecessors, (12143), 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) [2023-03-31 01:57:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 12146 transitions. [2023-03-31 01:57:10,268 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 12146 transitions. Word has length 85 [2023-03-31 01:57:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:10,268 INFO L495 AbstractCegarLoop]: Abstraction has 8275 states and 12146 transitions. [2023-03-31 01:57:10,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 12146 transitions. [2023-03-31 01:57:10,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-03-31 01:57:10,269 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:10,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:10,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:57:10,269 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:10,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2014382242, now seen corresponding path program 1 times [2023-03-31 01:57:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817207463] [2023-03-31 01:57:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:10,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:10,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:10,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817207463] [2023-03-31 01:57:10,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817207463] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:10,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:57:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609470131] [2023-03-31 01:57:10,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:10,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:10,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:10,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:10,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:10,525 INFO L87 Difference]: Start difference. First operand 8275 states and 12146 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:11,918 INFO L93 Difference]: Finished difference Result 16501 states and 24243 transitions. [2023-03-31 01:57:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-03-31 01:57:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:11,940 INFO L225 Difference]: With dead ends: 16501 [2023-03-31 01:57:11,941 INFO L226 Difference]: Without dead ends: 8275 [2023-03-31 01:57:11,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:11,952 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 369 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:11,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 117 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:57:11,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2023-03-31 01:57:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8275. [2023-03-31 01:57:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8275 states, 8271 states have (on average 1.456534880909201) internal successors, (12047), 8271 states have internal predecessors, (12047), 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) [2023-03-31 01:57:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 12050 transitions. [2023-03-31 01:57:12,953 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 12050 transitions. Word has length 85 [2023-03-31 01:57:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:12,954 INFO L495 AbstractCegarLoop]: Abstraction has 8275 states and 12050 transitions. [2023-03-31 01:57:12,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 12050 transitions. [2023-03-31 01:57:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-03-31 01:57:12,954 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:12,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:12,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:57:12,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:12,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1251518535, now seen corresponding path program 1 times [2023-03-31 01:57:12,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:12,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079821385] [2023-03-31 01:57:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:13,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079821385] [2023-03-31 01:57:13,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079821385] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:13,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:13,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:57:13,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600981282] [2023-03-31 01:57:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:13,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:13,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:13,173 INFO L87 Difference]: Start difference. First operand 8275 states and 12050 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:14,506 INFO L93 Difference]: Finished difference Result 16501 states and 24051 transitions. [2023-03-31 01:57:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:14,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-03-31 01:57:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:14,517 INFO L225 Difference]: With dead ends: 16501 [2023-03-31 01:57:14,517 INFO L226 Difference]: Without dead ends: 8275 [2023-03-31 01:57:14,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:14,528 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 340 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:14,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 133 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:57:14,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2023-03-31 01:57:15,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8275. [2023-03-31 01:57:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8275 states, 8271 states have (on average 1.4449280619030347) internal successors, (11951), 8271 states have internal predecessors, (11951), 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) [2023-03-31 01:57:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 11954 transitions. [2023-03-31 01:57:15,608 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 11954 transitions. Word has length 85 [2023-03-31 01:57:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:15,608 INFO L495 AbstractCegarLoop]: Abstraction has 8275 states and 11954 transitions. [2023-03-31 01:57:15,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 11954 transitions. [2023-03-31 01:57:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-03-31 01:57:15,609 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:15,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:15,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:57:15,609 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:15,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2117050924, now seen corresponding path program 1 times [2023-03-31 01:57:15,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:15,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261285956] [2023-03-31 01:57:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:15,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:15,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261285956] [2023-03-31 01:57:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261285956] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:15,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:15,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:57:15,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402983883] [2023-03-31 01:57:15,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:15,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:15,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:15,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:15,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:15,822 INFO L87 Difference]: Start difference. First operand 8275 states and 11954 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:17,218 INFO L93 Difference]: Finished difference Result 16501 states and 23859 transitions. [2023-03-31 01:57:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:17,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-03-31 01:57:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:17,230 INFO L225 Difference]: With dead ends: 16501 [2023-03-31 01:57:17,230 INFO L226 Difference]: Without dead ends: 8275 [2023-03-31 01:57:17,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:17,241 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 389 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:17,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 101 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 01:57:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8275 states. [2023-03-31 01:57:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8275 to 8275. [2023-03-31 01:57:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8275 states, 8271 states have (on average 1.4294523032281465) internal successors, (11823), 8271 states have internal predecessors, (11823), 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) [2023-03-31 01:57:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 11826 transitions. [2023-03-31 01:57:18,393 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 11826 transitions. Word has length 85 [2023-03-31 01:57:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:18,393 INFO L495 AbstractCegarLoop]: Abstraction has 8275 states and 11826 transitions. [2023-03-31 01:57:18,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:57:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 11826 transitions. [2023-03-31 01:57:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-03-31 01:57:18,394 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:18,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:18,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:57:18,394 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:18,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:18,394 INFO L85 PathProgramCache]: Analyzing trace with hash 375633809, now seen corresponding path program 1 times [2023-03-31 01:57:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:18,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871738769] [2023-03-31 01:57:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:18,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:18,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:57:18,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:18,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871738769] [2023-03-31 01:57:18,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871738769] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:18,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:18,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:57:18,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137963696] [2023-03-31 01:57:18,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:18,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:57:18,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:57:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:57:18,690 INFO L87 Difference]: Start difference. First operand 8275 states and 11826 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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) [2023-03-31 01:57:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:20,696 INFO L93 Difference]: Finished difference Result 12161 states and 17318 transitions. [2023-03-31 01:57:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:57:20,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 85 [2023-03-31 01:57:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:20,709 INFO L225 Difference]: With dead ends: 12161 [2023-03-31 01:57:20,709 INFO L226 Difference]: Without dead ends: 12159 [2023-03-31 01:57:20,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:57:20,711 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 195 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:20,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 682 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 01:57:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12159 states. [2023-03-31 01:57:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12159 to 8403. [2023-03-31 01:57:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8403 states, 8399 states have (on average 1.4114775568520062) internal successors, (11855), 8399 states have internal predecessors, (11855), 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) [2023-03-31 01:57:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8403 states to 8403 states and 11858 transitions. [2023-03-31 01:57:22,003 INFO L78 Accepts]: Start accepts. Automaton has 8403 states and 11858 transitions. Word has length 85 [2023-03-31 01:57:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:22,003 INFO L495 AbstractCegarLoop]: Abstraction has 8403 states and 11858 transitions. [2023-03-31 01:57:22,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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) [2023-03-31 01:57:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 8403 states and 11858 transitions. [2023-03-31 01:57:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-03-31 01:57:22,007 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:22,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:22,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 01:57:22,007 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:22,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 668164146, now seen corresponding path program 1 times [2023-03-31 01:57:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678934886] [2023-03-31 01:57:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:22,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 01:57:22,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:22,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678934886] [2023-03-31 01:57:22,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678934886] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:22,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:22,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:57:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209797615] [2023-03-31 01:57:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:57:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:57:22,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:22,280 INFO L87 Difference]: Start difference. First operand 8403 states and 11858 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-03-31 01:57:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:30,860 INFO L93 Difference]: Finished difference Result 57215 states and 80808 transitions. [2023-03-31 01:57:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:57:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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 115 [2023-03-31 01:57:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:30,939 INFO L225 Difference]: With dead ends: 57215 [2023-03-31 01:57:30,939 INFO L226 Difference]: Without dead ends: 51581 [2023-03-31 01:57:30,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:57:30,956 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1303 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:30,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1586 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51581 states. [2023-03-31 01:57:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51581 to 15411. [2023-03-31 01:57:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15411 states, 15407 states have (on average 1.4060491984163044) internal successors, (21663), 15407 states have internal predecessors, (21663), 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) [2023-03-31 01:57:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15411 states to 15411 states and 21666 transitions. [2023-03-31 01:57:34,046 INFO L78 Accepts]: Start accepts. Automaton has 15411 states and 21666 transitions. Word has length 115 [2023-03-31 01:57:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:57:34,047 INFO L495 AbstractCegarLoop]: Abstraction has 15411 states and 21666 transitions. [2023-03-31 01:57:34,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 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) [2023-03-31 01:57:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 15411 states and 21666 transitions. [2023-03-31 01:57:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-03-31 01:57:34,051 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:57:34,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:57:34,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 01:57:34,051 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:57:34,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:57:34,052 INFO L85 PathProgramCache]: Analyzing trace with hash 98145528, now seen corresponding path program 1 times [2023-03-31 01:57:34,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:57:34,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227742604] [2023-03-31 01:57:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:57:34,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:57:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:57:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:57:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 01:57:34,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:57:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227742604] [2023-03-31 01:57:34,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227742604] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:57:34,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:57:34,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 01:57:34,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525012123] [2023-03-31 01:57:34,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:57:34,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 01:57:34,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:57:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 01:57:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:57:34,326 INFO L87 Difference]: Start difference. First operand 15411 states and 21666 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 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) [2023-03-31 01:57:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:57:46,757 INFO L93 Difference]: Finished difference Result 65567 states and 92552 transitions. [2023-03-31 01:57:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 01:57:46,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 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 115 [2023-03-31 01:57:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:57:46,839 INFO L225 Difference]: With dead ends: 65567 [2023-03-31 01:57:46,839 INFO L226 Difference]: Without dead ends: 57213 [2023-03-31 01:57:46,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-03-31 01:57:46,858 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1301 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:57:46,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 1558 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 01:57:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57213 states.