/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/pals_lcr.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:15:49,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:15:49,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:15:49,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:15:49,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:15:49,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:15:49,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:15:49,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:15:49,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:15:49,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:15:49,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:15:49,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:15:49,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:15:49,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:15:49,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:15:49,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:15:49,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:15:49,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:15:49,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:15:49,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:15:49,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:15:49,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:15:49,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:15:49,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:15:49,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:15:49,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:15:49,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:15:49,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:15:49,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:15:49,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:15:49,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:15:49,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:15:49,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:15:49,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:15:49,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:15:49,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:15:49,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:15:49,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:15:49,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:15:49,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:15:49,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:15:49,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:15:49,675 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:15:49,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:15:49,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:15:49,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:15:49,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:15:49,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:15:49,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:15:49,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:15:49,682 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:15:49,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:15:49,683 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:15:49,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:15:49,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:15:49,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:15:49,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:15:49,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:15:49,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:15:49,684 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:15:49,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:15:49,685 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:15:49,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:15:49,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:15:49,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:15:49,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:15:49,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:15:49,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:15:49,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:15:49,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:15:49,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:15:49,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:15:49,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:15:49,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:15:49,687 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:15:49,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:15:49,687 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:15:49,687 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:15:49,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:15:49,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:15:49,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:15:49,931 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:15:49,931 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:15:49,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2023-04-02 05:15:51,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:15:51,334 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:15:51,335 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2023-04-02 05:15:51,344 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4d86c66/643964984eb246a382da421b42fb24aa/FLAG82152f0ec [2023-04-02 05:15:51,360 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4d86c66/643964984eb246a382da421b42fb24aa [2023-04-02 05:15:51,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:15:51,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:15:51,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:15:51,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:15:51,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:15:51,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46495c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51, skipping insertion in model container [2023-04-02 05:15:51,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:15:51,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:15:51,636 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/pals_lcr.3.ufo.UNBOUNDED.pals.c[6043,6056] [2023-04-02 05:15:51,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:15:51,652 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:15:51,696 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/pals_lcr.3.ufo.UNBOUNDED.pals.c[6043,6056] [2023-04-02 05:15:51,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:15:51,717 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:15:51,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51 WrapperNode [2023-04-02 05:15:51,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:15:51,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:15:51,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:15:51,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:15:51,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,772 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:15:51,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:15:51,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:15:51,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:15:51,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (1/1) ... [2023-04-02 05:15:51,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:15:51,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:15:51,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:15:51,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:15:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:15:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:15:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:15:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:15:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:15:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:15:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:15:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:15:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:15:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:15:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:15:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:15:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:15:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:15:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:15:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:15:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:15:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:15:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:15:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:15:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:15:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:15:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:15:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:15:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:15:51,963 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:15:51,965 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:15:52,364 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:15:52,370 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:15:52,370 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:15:52,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:15:52 BoogieIcfgContainer [2023-04-02 05:15:52,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:15:52,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:15:52,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:15:52,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:15:52,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:15:51" (1/3) ... [2023-04-02 05:15:52,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178f1ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:15:52, skipping insertion in model container [2023-04-02 05:15:52,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:51" (2/3) ... [2023-04-02 05:15:52,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178f1ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:15:52, skipping insertion in model container [2023-04-02 05:15:52,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:15:52" (3/3) ... [2023-04-02 05:15:52,382 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c [2023-04-02 05:15:52,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:15:52,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:15:52,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:15:52,458 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;@470db75, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:15:52,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:15:52,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 68 states have (on average 1.5735294117647058) internal successors, (107), 70 states have internal predecessors, (107), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 05:15:52,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-02 05:15:52,472 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:52,473 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] [2023-04-02 05:15:52,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:52,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash 21780229, now seen corresponding path program 1 times [2023-04-02 05:15:52,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:52,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16129275] [2023-04-02 05:15:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:15:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:15:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:53,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:15:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:53,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:15:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:53,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16129275] [2023-04-02 05:15:53,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16129275] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:53,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:53,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:15:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005916836] [2023-04-02 05:15:53,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:53,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:15:53,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:15:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:15:53,153 INFO L87 Difference]: Start difference. First operand has 88 states, 68 states have (on average 1.5735294117647058) internal successors, (107), 70 states have internal predecessors, (107), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:15:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:53,594 INFO L93 Difference]: Finished difference Result 141 states and 200 transitions. [2023-04-02 05:15:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:15:53,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-04-02 05:15:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:53,609 INFO L225 Difference]: With dead ends: 141 [2023-04-02 05:15:53,609 INFO L226 Difference]: Without dead ends: 84 [2023-04-02 05:15:53,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:15:53,616 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 184 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:53,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 39 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:15:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-04-02 05:15:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2023-04-02 05:15:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 66 states have internal predecessors, (100), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:15:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2023-04-02 05:15:53,680 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 47 [2023-04-02 05:15:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:53,680 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2023-04-02 05:15:53,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:15:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2023-04-02 05:15:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-02 05:15:53,682 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:53,683 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] [2023-04-02 05:15:53,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:15:53,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:53,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash 296539843, now seen corresponding path program 1 times [2023-04-02 05:15:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:53,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75676079] [2023-04-02 05:15:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:53,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:15:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:54,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:15:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:54,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:15:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:15:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:54,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75676079] [2023-04-02 05:15:54,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75676079] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:15:54,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789026784] [2023-04-02 05:15:54,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:54,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:15:54,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:54,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:15:54,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:15:54,122 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:15:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:54,967 INFO L93 Difference]: Finished difference Result 139 states and 192 transitions. [2023-04-02 05:15:54,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:15:54,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2023-04-02 05:15:54,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:54,969 INFO L225 Difference]: With dead ends: 139 [2023-04-02 05:15:54,969 INFO L226 Difference]: Without dead ends: 84 [2023-04-02 05:15:54,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:15:54,971 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 321 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:54,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 120 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:15:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-04-02 05:15:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2023-04-02 05:15:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:15:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2023-04-02 05:15:54,989 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 47 [2023-04-02 05:15:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:54,990 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2023-04-02 05:15:54,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 7 states have internal predecessors, (31), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:15:54,990 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2023-04-02 05:15:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:15:54,991 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:54,992 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] [2023-04-02 05:15:54,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:15:54,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:54,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2079643510, now seen corresponding path program 1 times [2023-04-02 05:15:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425748459] [2023-04-02 05:15:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:55,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:15:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:15:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:15:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:15:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:15:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:55,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425748459] [2023-04-02 05:15:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425748459] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:55,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039584455] [2023-04-02 05:15:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:55,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:55,357 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:15:57,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:57,914 INFO L93 Difference]: Finished difference Result 542 states and 745 transitions. [2023-04-02 05:15:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-02 05:15:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2023-04-02 05:15:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:57,921 INFO L225 Difference]: With dead ends: 542 [2023-04-02 05:15:57,921 INFO L226 Difference]: Without dead ends: 493 [2023-04-02 05:15:57,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=724, Invalid=2816, Unknown=0, NotChecked=0, Total=3540 [2023-04-02 05:15:57,924 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1052 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:57,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 128 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:15:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-04-02 05:15:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 328. [2023-04-02 05:15:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 254 states have (on average 1.3937007874015748) internal successors, (354), 261 states have internal predecessors, (354), 34 states have call successors, (34), 34 states have call predecessors, (34), 39 states have return successors, (55), 33 states have call predecessors, (55), 33 states have call successors, (55) [2023-04-02 05:15:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 443 transitions. [2023-04-02 05:15:57,985 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 443 transitions. Word has length 62 [2023-04-02 05:15:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:57,986 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 443 transitions. [2023-04-02 05:15:57,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:15:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 443 transitions. [2023-04-02 05:15:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-02 05:15:57,989 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:57,989 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] [2023-04-02 05:15:57,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:15:57,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:57,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:57,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2018437542, now seen corresponding path program 1 times [2023-04-02 05:15:57,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:57,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676731848] [2023-04-02 05:15:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:15:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:15:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:15:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:15:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:15:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:58,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:58,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676731848] [2023-04-02 05:15:58,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676731848] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:58,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:58,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 05:15:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309523515] [2023-04-02 05:15:58,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:58,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 05:15:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 05:15:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 05:15:58,170 INFO L87 Difference]: Start difference. First operand 328 states and 443 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 05:15:58,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:58,811 INFO L93 Difference]: Finished difference Result 882 states and 1223 transitions. [2023-04-02 05:15:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:15:58,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2023-04-02 05:15:58,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:58,817 INFO L225 Difference]: With dead ends: 882 [2023-04-02 05:15:58,817 INFO L226 Difference]: Without dead ends: 588 [2023-04-02 05:15:58,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:15:58,821 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 156 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:58,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 73 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:15:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-04-02 05:15:58,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 568. [2023-04-02 05:15:58,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 430 states have (on average 1.372093023255814) internal successors, (590), 441 states have internal predecessors, (590), 64 states have call successors, (64), 64 states have call predecessors, (64), 73 states have return successors, (117), 63 states have call predecessors, (117), 63 states have call successors, (117) [2023-04-02 05:15:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 771 transitions. [2023-04-02 05:15:58,904 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 771 transitions. Word has length 64 [2023-04-02 05:15:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:58,904 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 771 transitions. [2023-04-02 05:15:58,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 05:15:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 771 transitions. [2023-04-02 05:15:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-02 05:15:58,906 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:58,906 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] [2023-04-02 05:15:58,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:15:58,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:58,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash 988827298, now seen corresponding path program 1 times [2023-04-02 05:15:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:58,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511563727] [2023-04-02 05:15:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:58,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:15:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:15:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:15:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:15:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:15:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511563727] [2023-04-02 05:15:59,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511563727] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:59,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:59,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:59,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012747458] [2023-04-02 05:15:59,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:59,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:59,311 INFO L87 Difference]: Start difference. First operand 568 states and 771 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:01,819 INFO L93 Difference]: Finished difference Result 1559 states and 2154 transitions. [2023-04-02 05:16:01,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-04-02 05:16:01,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2023-04-02 05:16:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:01,826 INFO L225 Difference]: With dead ends: 1559 [2023-04-02 05:16:01,826 INFO L226 Difference]: Without dead ends: 1025 [2023-04-02 05:16:01,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=666, Invalid=2526, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 05:16:01,836 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1331 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:01,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 111 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:16:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-04-02 05:16:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 978. [2023-04-02 05:16:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 743 states have (on average 1.3876177658142665) internal successors, (1031), 759 states have internal predecessors, (1031), 110 states have call successors, (110), 110 states have call predecessors, (110), 124 states have return successors, (210), 109 states have call predecessors, (210), 109 states have call successors, (210) [2023-04-02 05:16:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1351 transitions. [2023-04-02 05:16:01,961 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1351 transitions. Word has length 64 [2023-04-02 05:16:01,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:01,962 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1351 transitions. [2023-04-02 05:16:01,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1351 transitions. [2023-04-02 05:16:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-02 05:16:01,964 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:01,964 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] [2023-04-02 05:16:01,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:16:01,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:01,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:01,965 INFO L85 PathProgramCache]: Analyzing trace with hash -323394843, now seen corresponding path program 1 times [2023-04-02 05:16:01,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:01,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572914510] [2023-04-02 05:16:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:02,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:02,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:02,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:02,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:02,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:02,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572914510] [2023-04-02 05:16:02,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572914510] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:02,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:02,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:16:02,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021934858] [2023-04-02 05:16:02,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:02,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:16:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:16:02,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:16:02,258 INFO L87 Difference]: Start difference. First operand 978 states and 1351 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:03,086 INFO L93 Difference]: Finished difference Result 2244 states and 3123 transitions. [2023-04-02 05:16:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:16:03,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-04-02 05:16:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:03,096 INFO L225 Difference]: With dead ends: 2244 [2023-04-02 05:16:03,096 INFO L226 Difference]: Without dead ends: 1300 [2023-04-02 05:16:03,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:16:03,101 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 569 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:03,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 71 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:03,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2023-04-02 05:16:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1261. [2023-04-02 05:16:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 950 states have (on average 1.3747368421052633) internal successors, (1306), 978 states have internal predecessors, (1306), 142 states have call successors, (142), 142 states have call predecessors, (142), 168 states have return successors, (280), 141 states have call predecessors, (280), 141 states have call successors, (280) [2023-04-02 05:16:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1728 transitions. [2023-04-02 05:16:03,282 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1728 transitions. Word has length 65 [2023-04-02 05:16:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:03,283 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1728 transitions. [2023-04-02 05:16:03,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1728 transitions. [2023-04-02 05:16:03,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-02 05:16:03,285 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:03,285 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] [2023-04-02 05:16:03,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:16:03,285 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:03,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1324030118, now seen corresponding path program 1 times [2023-04-02 05:16:03,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:03,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89110288] [2023-04-02 05:16:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:03,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:03,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89110288] [2023-04-02 05:16:03,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89110288] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:03,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:03,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:16:03,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504474676] [2023-04-02 05:16:03,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:03,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:16:03,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:03,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:16:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:16:03,728 INFO L87 Difference]: Start difference. First operand 1261 states and 1728 transitions. Second operand has 16 states, 14 states have (on average 3.5) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:04,886 INFO L93 Difference]: Finished difference Result 1399 states and 1990 transitions. [2023-04-02 05:16:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:16:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-04-02 05:16:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:04,893 INFO L225 Difference]: With dead ends: 1399 [2023-04-02 05:16:04,894 INFO L226 Difference]: Without dead ends: 1397 [2023-04-02 05:16:04,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:16:04,897 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 125 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:04,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 245 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:16:04,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2023-04-02 05:16:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1288. [2023-04-02 05:16:05,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 968 states have (on average 1.362603305785124) internal successors, (1319), 999 states have internal predecessors, (1319), 145 states have call successors, (145), 145 states have call predecessors, (145), 174 states have return successors, (289), 144 states have call predecessors, (289), 144 states have call successors, (289) [2023-04-02 05:16:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1753 transitions. [2023-04-02 05:16:05,061 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1753 transitions. Word has length 65 [2023-04-02 05:16:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:05,061 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1753 transitions. [2023-04-02 05:16:05,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 05:16:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1753 transitions. [2023-04-02 05:16:05,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 05:16:05,062 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:05,063 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] [2023-04-02 05:16:05,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:16:05,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:05,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:05,063 INFO L85 PathProgramCache]: Analyzing trace with hash 248560338, now seen corresponding path program 1 times [2023-04-02 05:16:05,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:05,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146253300] [2023-04-02 05:16:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:16:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:16:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:05,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:05,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146253300] [2023-04-02 05:16:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146253300] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:05,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:16:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913833040] [2023-04-02 05:16:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:16:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:16:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:16:05,370 INFO L87 Difference]: Start difference. First operand 1288 states and 1753 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 05:16:06,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:06,584 INFO L93 Difference]: Finished difference Result 3030 states and 4108 transitions. [2023-04-02 05:16:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:16:06,584 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 66 [2023-04-02 05:16:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:06,592 INFO L225 Difference]: With dead ends: 3030 [2023-04-02 05:16:06,592 INFO L226 Difference]: Without dead ends: 1776 [2023-04-02 05:16:06,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:16:06,596 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 663 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:06,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 50 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:16:06,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2023-04-02 05:16:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1365. [2023-04-02 05:16:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1022 states have (on average 1.3620352250489236) internal successors, (1392), 1062 states have internal predecessors, (1392), 152 states have call successors, (152), 152 states have call predecessors, (152), 190 states have return successors, (310), 150 states have call predecessors, (310), 151 states have call successors, (310) [2023-04-02 05:16:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1854 transitions. [2023-04-02 05:16:06,778 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1854 transitions. Word has length 66 [2023-04-02 05:16:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:06,779 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1854 transitions. [2023-04-02 05:16:06,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 05:16:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1854 transitions. [2023-04-02 05:16:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 05:16:06,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:06,781 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] [2023-04-02 05:16:06,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:16:06,781 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:06,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:06,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1797486398, now seen corresponding path program 1 times [2023-04-02 05:16:06,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:06,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726377832] [2023-04-02 05:16:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:06,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:07,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:16:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:07,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726377832] [2023-04-02 05:16:07,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726377832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:07,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:07,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:16:07,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831460848] [2023-04-02 05:16:07,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:07,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:16:07,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:07,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:16:07,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:16:07,029 INFO L87 Difference]: Start difference. First operand 1365 states and 1854 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 05:16:08,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:08,255 INFO L93 Difference]: Finished difference Result 2915 states and 3895 transitions. [2023-04-02 05:16:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:16:08,256 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 66 [2023-04-02 05:16:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:08,264 INFO L225 Difference]: With dead ends: 2915 [2023-04-02 05:16:08,264 INFO L226 Difference]: Without dead ends: 1598 [2023-04-02 05:16:08,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:16:08,270 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 561 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:08,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 51 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-04-02 05:16:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1392. [2023-04-02 05:16:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1043 states have (on average 1.3604985618408436) internal successors, (1419), 1083 states have internal predecessors, (1419), 155 states have call successors, (155), 155 states have call predecessors, (155), 193 states have return successors, (313), 153 states have call predecessors, (313), 154 states have call successors, (313) [2023-04-02 05:16:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1887 transitions. [2023-04-02 05:16:08,518 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1887 transitions. Word has length 66 [2023-04-02 05:16:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:08,518 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 1887 transitions. [2023-04-02 05:16:08,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 05:16:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1887 transitions. [2023-04-02 05:16:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 05:16:08,522 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:08,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:16:08,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:16:08,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:08,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:08,523 INFO L85 PathProgramCache]: Analyzing trace with hash -393060387, now seen corresponding path program 1 times [2023-04-02 05:16:08,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:08,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883350819] [2023-04-02 05:16:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:08,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:16:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:16:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:08,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:08,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883350819] [2023-04-02 05:16:08,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883350819] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:08,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:08,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:16:08,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264720826] [2023-04-02 05:16:08,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:08,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:16:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:16:08,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:16:08,781 INFO L87 Difference]: Start difference. First operand 1392 states and 1887 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 9 states have internal predecessors, (52), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 05:16:10,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:10,014 INFO L93 Difference]: Finished difference Result 2676 states and 3657 transitions. [2023-04-02 05:16:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:16:10,015 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 9 states have internal predecessors, (52), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 68 [2023-04-02 05:16:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:10,021 INFO L225 Difference]: With dead ends: 2676 [2023-04-02 05:16:10,022 INFO L226 Difference]: Without dead ends: 1641 [2023-04-02 05:16:10,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:16:10,024 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 568 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:10,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 54 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-04-02 05:16:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1493. [2023-04-02 05:16:10,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1123 states have (on average 1.3739982190560998) internal successors, (1543), 1164 states have internal predecessors, (1543), 165 states have call successors, (165), 165 states have call predecessors, (165), 204 states have return successors, (330), 163 states have call predecessors, (330), 164 states have call successors, (330) [2023-04-02 05:16:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2038 transitions. [2023-04-02 05:16:10,211 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2038 transitions. Word has length 68 [2023-04-02 05:16:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:10,211 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2038 transitions. [2023-04-02 05:16:10,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 9 states have internal predecessors, (52), 5 states have call successors, (9), 7 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-04-02 05:16:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2038 transitions. [2023-04-02 05:16:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 05:16:10,212 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:10,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:16:10,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:16:10,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:10,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2095460516, now seen corresponding path program 1 times [2023-04-02 05:16:10,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:10,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011958804] [2023-04-02 05:16:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:10,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:16:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:16:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:10,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:16:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:10,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011958804] [2023-04-02 05:16:10,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011958804] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:10,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:10,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:16:10,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430625588] [2023-04-02 05:16:10,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:10,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:16:10,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:10,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:16:10,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:16:10,455 INFO L87 Difference]: Start difference. First operand 1493 states and 2038 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:16:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:11,257 INFO L93 Difference]: Finished difference Result 3023 states and 4152 transitions. [2023-04-02 05:16:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 05:16:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2023-04-02 05:16:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:11,265 INFO L225 Difference]: With dead ends: 3023 [2023-04-02 05:16:11,266 INFO L226 Difference]: Without dead ends: 1889 [2023-04-02 05:16:11,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:16:11,269 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 305 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:11,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 70 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:16:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-04-02 05:16:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1873. [2023-04-02 05:16:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1403 states have (on average 1.344975053456878) internal successors, (1887), 1436 states have internal predecessors, (1887), 219 states have call successors, (219), 219 states have call predecessors, (219), 250 states have return successors, (411), 217 states have call predecessors, (411), 218 states have call successors, (411) [2023-04-02 05:16:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2517 transitions. [2023-04-02 05:16:11,545 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2517 transitions. Word has length 69 [2023-04-02 05:16:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:11,545 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 2517 transitions. [2023-04-02 05:16:11,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 6 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-04-02 05:16:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2517 transitions. [2023-04-02 05:16:11,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 05:16:11,547 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:11,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:11,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:16:11,547 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:11,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1216863271, now seen corresponding path program 1 times [2023-04-02 05:16:11,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:11,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066447983] [2023-04-02 05:16:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:16:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:16:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:16:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:16:11,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:11,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066447983] [2023-04-02 05:16:11,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066447983] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:11,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:11,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:16:11,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358272876] [2023-04-02 05:16:11,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:11,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:16:11,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:11,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:16:11,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:16:11,956 INFO L87 Difference]: Start difference. First operand 1873 states and 2517 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:16:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:14,970 INFO L93 Difference]: Finished difference Result 3942 states and 5384 transitions. [2023-04-02 05:16:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-02 05:16:14,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2023-04-02 05:16:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:14,981 INFO L225 Difference]: With dead ends: 3942 [2023-04-02 05:16:14,981 INFO L226 Difference]: Without dead ends: 2685 [2023-04-02 05:16:14,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=815, Invalid=3741, Unknown=0, NotChecked=0, Total=4556 [2023-04-02 05:16:14,986 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1066 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:14,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 155 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:16:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2023-04-02 05:16:15,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2542. [2023-04-02 05:16:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 1906 states have (on average 1.3462749213011542) internal successors, (2566), 1945 states have internal predecessors, (2566), 299 states have call successors, (299), 299 states have call predecessors, (299), 336 states have return successors, (567), 297 states have call predecessors, (567), 298 states have call successors, (567) [2023-04-02 05:16:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 3432 transitions. [2023-04-02 05:16:15,325 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 3432 transitions. Word has length 98 [2023-04-02 05:16:15,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:15,326 INFO L495 AbstractCegarLoop]: Abstraction has 2542 states and 3432 transitions. [2023-04-02 05:16:15,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:16:15,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 3432 transitions. [2023-04-02 05:16:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 05:16:15,327 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:15,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:15,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:16:15,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:15,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:15,328 INFO L85 PathProgramCache]: Analyzing trace with hash -829183465, now seen corresponding path program 1 times [2023-04-02 05:16:15,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:15,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380138588] [2023-04-02 05:16:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:15,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:16:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:16:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:16:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 05:16:15,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:15,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380138588] [2023-04-02 05:16:15,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380138588] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:15,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:15,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:16:15,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164821476] [2023-04-02 05:16:15,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:15,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:16:15,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:15,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:16:15,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:16:15,685 INFO L87 Difference]: Start difference. First operand 2542 states and 3432 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:16:18,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:18,612 INFO L93 Difference]: Finished difference Result 6732 states and 9200 transitions. [2023-04-02 05:16:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-04-02 05:16:18,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2023-04-02 05:16:18,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:18,632 INFO L225 Difference]: With dead ends: 6732 [2023-04-02 05:16:18,632 INFO L226 Difference]: Without dead ends: 4445 [2023-04-02 05:16:18,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=695, Invalid=2965, Unknown=0, NotChecked=0, Total=3660 [2023-04-02 05:16:18,640 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 1321 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:18,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 144 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:16:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4445 states. [2023-04-02 05:16:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4445 to 4177. [2023-04-02 05:16:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 3139 states have (on average 1.349155782096209) internal successors, (4235), 3202 states have internal predecessors, (4235), 488 states have call successors, (488), 488 states have call predecessors, (488), 549 states have return successors, (929), 486 states have call predecessors, (929), 487 states have call successors, (929) [2023-04-02 05:16:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 5652 transitions. [2023-04-02 05:16:19,240 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 5652 transitions. Word has length 98 [2023-04-02 05:16:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:19,240 INFO L495 AbstractCegarLoop]: Abstraction has 4177 states and 5652 transitions. [2023-04-02 05:16:19,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 9 states have internal predecessors, (63), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:16:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 5652 transitions. [2023-04-02 05:16:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 05:16:19,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:19,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:19,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:16:19,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:19,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -754020609, now seen corresponding path program 1 times [2023-04-02 05:16:19,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:19,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443510951] [2023-04-02 05:16:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:19,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:16:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:16:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:16:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 05:16:19,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:19,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443510951] [2023-04-02 05:16:19,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443510951] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:19,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832468384] [2023-04-02 05:16:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:19,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:19,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:19,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:19,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:16:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:19,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:16:19,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:19,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:16:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:16:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832468384] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:16:20,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:16:20,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 9] total 19 [2023-04-02 05:16:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040279808] [2023-04-02 05:16:20,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:16:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:16:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:16:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:16:20,079 INFO L87 Difference]: Start difference. First operand 4177 states and 5652 transitions. Second operand has 19 states, 18 states have (on average 6.722222222222222) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (31), 11 states have call predecessors, (31), 9 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-02 05:16:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:22,797 INFO L93 Difference]: Finished difference Result 10885 states and 14783 transitions. [2023-04-02 05:16:22,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 05:16:22,798 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.722222222222222) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (31), 11 states have call predecessors, (31), 9 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) Word has length 100 [2023-04-02 05:16:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:22,829 INFO L225 Difference]: With dead ends: 10885 [2023-04-02 05:16:22,829 INFO L226 Difference]: Without dead ends: 6751 [2023-04-02 05:16:22,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=364, Invalid=1358, Unknown=0, NotChecked=0, Total=1722 [2023-04-02 05:16:22,843 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 753 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:22,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 160 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:16:22,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2023-04-02 05:16:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 6409. [2023-04-02 05:16:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6409 states, 4763 states have (on average 1.30065085030443) internal successors, (6195), 4880 states have internal predecessors, (6195), 765 states have call successors, (765), 765 states have call predecessors, (765), 880 states have return successors, (1397), 763 states have call predecessors, (1397), 764 states have call successors, (1397) [2023-04-02 05:16:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6409 states to 6409 states and 8357 transitions. [2023-04-02 05:16:23,694 INFO L78 Accepts]: Start accepts. Automaton has 6409 states and 8357 transitions. Word has length 100 [2023-04-02 05:16:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:23,695 INFO L495 AbstractCegarLoop]: Abstraction has 6409 states and 8357 transitions. [2023-04-02 05:16:23,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.722222222222222) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (31), 11 states have call predecessors, (31), 9 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-02 05:16:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 6409 states and 8357 transitions. [2023-04-02 05:16:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 05:16:23,697 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:23,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:23,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 05:16:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-02 05:16:23,904 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:23,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1861845006, now seen corresponding path program 1 times [2023-04-02 05:16:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545467116] [2023-04-02 05:16:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:16:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:16:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:16:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:16:24,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:24,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545467116] [2023-04-02 05:16:24,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545467116] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:24,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:16:24,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:16:24,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836103966] [2023-04-02 05:16:24,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:24,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:16:24,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:16:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:16:24,363 INFO L87 Difference]: Start difference. First operand 6409 states and 8357 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 9 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:16:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:27,409 INFO L93 Difference]: Finished difference Result 10703 states and 14081 transitions. [2023-04-02 05:16:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-04-02 05:16:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 9 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2023-04-02 05:16:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:27,445 INFO L225 Difference]: With dead ends: 10703 [2023-04-02 05:16:27,445 INFO L226 Difference]: Without dead ends: 6814 [2023-04-02 05:16:27,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=755, Invalid=3277, Unknown=0, NotChecked=0, Total=4032 [2023-04-02 05:16:27,458 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1298 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:27,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 155 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:16:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6814 states. [2023-04-02 05:16:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6814 to 6431. [2023-04-02 05:16:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6431 states, 4777 states have (on average 1.3001884027632404) internal successors, (6211), 4906 states have internal predecessors, (6211), 763 states have call successors, (763), 763 states have call predecessors, (763), 890 states have return successors, (1393), 761 states have call predecessors, (1393), 762 states have call successors, (1393) [2023-04-02 05:16:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6431 states to 6431 states and 8367 transitions. [2023-04-02 05:16:28,218 INFO L78 Accepts]: Start accepts. Automaton has 6431 states and 8367 transitions. Word has length 100 [2023-04-02 05:16:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:28,218 INFO L495 AbstractCegarLoop]: Abstraction has 6431 states and 8367 transitions. [2023-04-02 05:16:28,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 9 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:16:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6431 states and 8367 transitions. [2023-04-02 05:16:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:16:28,220 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:28,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:28,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:16:28,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:28,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash -383143449, now seen corresponding path program 1 times [2023-04-02 05:16:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:28,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234508281] [2023-04-02 05:16:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:28,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:16:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:16:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 05:16:28,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:28,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234508281] [2023-04-02 05:16:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234508281] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675041708] [2023-04-02 05:16:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:28,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:28,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:28,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:28,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:16:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:28,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:16:28,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:28,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:16:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:16:28,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675041708] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:16:28,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:16:28,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-04-02 05:16:28,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933978992] [2023-04-02 05:16:28,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:16:28,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:16:28,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:16:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:16:28,954 INFO L87 Difference]: Start difference. First operand 6431 states and 8367 transitions. Second operand has 19 states, 18 states have (on average 6.944444444444445) internal successors, (125), 14 states have internal predecessors, (125), 7 states have call successors, (31), 12 states have call predecessors, (31), 10 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-02 05:16:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:30,263 INFO L93 Difference]: Finished difference Result 9557 states and 12413 transitions. [2023-04-02 05:16:30,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:16:30,263 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.944444444444445) internal successors, (125), 14 states have internal predecessors, (125), 7 states have call successors, (31), 12 states have call predecessors, (31), 10 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) Word has length 101 [2023-04-02 05:16:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:30,272 INFO L225 Difference]: With dead ends: 9557 [2023-04-02 05:16:30,272 INFO L226 Difference]: Without dead ends: 3201 [2023-04-02 05:16:30,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:16:30,283 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 589 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:30,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 88 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:16:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2023-04-02 05:16:30,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 3175. [2023-04-02 05:16:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 2356 states have (on average 1.2767402376910018) internal successors, (3008), 2418 states have internal predecessors, (3008), 379 states have call successors, (379), 379 states have call predecessors, (379), 439 states have return successors, (643), 377 states have call predecessors, (643), 378 states have call successors, (643) [2023-04-02 05:16:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4030 transitions. [2023-04-02 05:16:30,685 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4030 transitions. Word has length 101 [2023-04-02 05:16:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:30,685 INFO L495 AbstractCegarLoop]: Abstraction has 3175 states and 4030 transitions. [2023-04-02 05:16:30,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.944444444444445) internal successors, (125), 14 states have internal predecessors, (125), 7 states have call successors, (31), 12 states have call predecessors, (31), 10 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-02 05:16:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4030 transitions. [2023-04-02 05:16:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 05:16:30,687 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:30,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:30,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:16:30,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-02 05:16:30,895 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:30,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:30,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1738136587, now seen corresponding path program 1 times [2023-04-02 05:16:30,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:30,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959484739] [2023-04-02 05:16:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:30,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:16:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:16:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 05:16:31,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959484739] [2023-04-02 05:16:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959484739] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239059493] [2023-04-02 05:16:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:31,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:31,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:31,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:31,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:16:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:31,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:16:31,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:31,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:16:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:16:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239059493] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:16:31,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:16:31,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-04-02 05:16:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802333087] [2023-04-02 05:16:31,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:16:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:16:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:16:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:16:31,622 INFO L87 Difference]: Start difference. First operand 3175 states and 4030 transitions. Second operand has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 14 states have internal predecessors, (130), 7 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-02 05:16:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:33,760 INFO L93 Difference]: Finished difference Result 9357 states and 12032 transitions. [2023-04-02 05:16:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-02 05:16:33,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 14 states have internal predecessors, (130), 7 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) Word has length 103 [2023-04-02 05:16:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:33,778 INFO L225 Difference]: With dead ends: 9357 [2023-04-02 05:16:33,779 INFO L226 Difference]: Without dead ends: 6257 [2023-04-02 05:16:33,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2023-04-02 05:16:33,786 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 751 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:33,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 129 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:16:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2023-04-02 05:16:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 5886. [2023-04-02 05:16:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5886 states, 4294 states have (on average 1.231485794131346) internal successors, (5288), 4403 states have internal predecessors, (5288), 742 states have call successors, (742), 742 states have call predecessors, (742), 849 states have return successors, (1313), 740 states have call predecessors, (1313), 741 states have call successors, (1313) [2023-04-02 05:16:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5886 states to 5886 states and 7343 transitions. [2023-04-02 05:16:34,537 INFO L78 Accepts]: Start accepts. Automaton has 5886 states and 7343 transitions. Word has length 103 [2023-04-02 05:16:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:34,537 INFO L495 AbstractCegarLoop]: Abstraction has 5886 states and 7343 transitions. [2023-04-02 05:16:34,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 7.222222222222222) internal successors, (130), 14 states have internal predecessors, (130), 7 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 7 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-02 05:16:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5886 states and 7343 transitions. [2023-04-02 05:16:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:16:34,541 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:34,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:34,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 05:16:34,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:34,748 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:34,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash 324313959, now seen corresponding path program 1 times [2023-04-02 05:16:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:34,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682879185] [2023-04-02 05:16:34,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 05:16:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 05:16:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:16:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:16:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:16:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:16:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 05:16:35,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:35,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682879185] [2023-04-02 05:16:35,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682879185] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:35,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110847018] [2023-04-02 05:16:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:35,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:35,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:35,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:35,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 05:16:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:35,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:16:35,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 05:16:35,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:16:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110847018] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:16:35,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:16:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [19] total 22 [2023-04-02 05:16:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704139849] [2023-04-02 05:16:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:16:35,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:16:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:16:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:16:35,706 INFO L87 Difference]: Start difference. First operand 5886 states and 7343 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:16:36,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:36,300 INFO L93 Difference]: Finished difference Result 8743 states and 10901 transitions. [2023-04-02 05:16:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:16:36,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2023-04-02 05:16:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:36,308 INFO L225 Difference]: With dead ends: 8743 [2023-04-02 05:16:36,309 INFO L226 Difference]: Without dead ends: 2928 [2023-04-02 05:16:36,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-04-02 05:16:36,321 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 117 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:36,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 82 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:16:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-04-02 05:16:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2023-04-02 05:16:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2133 states have (on average 1.2109704641350212) internal successors, (2583), 2187 states have internal predecessors, (2583), 370 states have call successors, (370), 370 states have call predecessors, (370), 422 states have return successors, (566), 368 states have call predecessors, (566), 369 states have call successors, (566) [2023-04-02 05:16:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 3519 transitions. [2023-04-02 05:16:36,695 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 3519 transitions. Word has length 105 [2023-04-02 05:16:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:36,696 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 3519 transitions. [2023-04-02 05:16:36,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:16:36,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 3519 transitions. [2023-04-02 05:16:36,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:16:36,697 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:36,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:36,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 05:16:36,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-02 05:16:36,905 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:36,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash -869145369, now seen corresponding path program 2 times [2023-04-02 05:16:36,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:36,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381089180] [2023-04-02 05:16:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:16:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-04-02 05:16:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 05:16:37,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:37,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381089180] [2023-04-02 05:16:37,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381089180] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:37,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143234793] [2023-04-02 05:16:37,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 05:16:37,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:37,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:37,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 05:16:37,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 05:16:37,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 05:16:37,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 05:16:37,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:38,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:16:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:16:38,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143234793] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:16:38,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:16:38,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 7] total 31 [2023-04-02 05:16:38,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104016962] [2023-04-02 05:16:38,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:16:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-04-02 05:16:38,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-04-02 05:16:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2023-04-02 05:16:38,281 INFO L87 Difference]: Start difference. First operand 2926 states and 3519 transitions. Second operand has 31 states, 30 states have (on average 6.366666666666666) internal successors, (191), 26 states have internal predecessors, (191), 14 states have call successors, (36), 14 states have call predecessors, (36), 16 states have return successors, (35), 13 states have call predecessors, (35), 13 states have call successors, (35) [2023-04-02 05:16:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:50,759 INFO L93 Difference]: Finished difference Result 15961 states and 20085 transitions. [2023-04-02 05:16:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-04-02 05:16:50,759 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 6.366666666666666) internal successors, (191), 26 states have internal predecessors, (191), 14 states have call successors, (36), 14 states have call predecessors, (36), 16 states have return successors, (35), 13 states have call predecessors, (35), 13 states have call successors, (35) Word has length 105 [2023-04-02 05:16:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:50,795 INFO L225 Difference]: With dead ends: 15961 [2023-04-02 05:16:50,796 INFO L226 Difference]: Without dead ends: 12746 [2023-04-02 05:16:50,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9372 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=3397, Invalid=23663, Unknown=0, NotChecked=0, Total=27060 [2023-04-02 05:16:50,812 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 3593 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 4246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:50,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3593 Valid, 254 Invalid, 4246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 05:16:50,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12746 states. [2023-04-02 05:16:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12746 to 12293. [2023-04-02 05:16:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12293 states, 9010 states have (on average 1.2100998890122086) internal successors, (10903), 9400 states have internal predecessors, (10903), 1487 states have call successors, (1487), 1407 states have call predecessors, (1487), 1795 states have return successors, (2565), 1485 states have call predecessors, (2565), 1486 states have call successors, (2565) [2023-04-02 05:16:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12293 states to 12293 states and 14955 transitions. [2023-04-02 05:16:52,432 INFO L78 Accepts]: Start accepts. Automaton has 12293 states and 14955 transitions. Word has length 105 [2023-04-02 05:16:52,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:52,432 INFO L495 AbstractCegarLoop]: Abstraction has 12293 states and 14955 transitions. [2023-04-02 05:16:52,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 6.366666666666666) internal successors, (191), 26 states have internal predecessors, (191), 14 states have call successors, (36), 14 states have call predecessors, (36), 16 states have return successors, (35), 13 states have call predecessors, (35), 13 states have call successors, (35) [2023-04-02 05:16:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 12293 states and 14955 transitions. [2023-04-02 05:16:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 05:16:52,434 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:52,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:16:52,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 05:16:52,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:52,641 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:52,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1501652426, now seen corresponding path program 1 times [2023-04-02 05:16:52,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:52,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114879764] [2023-04-02 05:16:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:52,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:16:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:16:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:16:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:16:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:16:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:16:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:16:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:16:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:16:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-04-02 05:16:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 05:16:53,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:53,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114879764] [2023-04-02 05:16:53,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114879764] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:53,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033350084] [2023-04-02 05:16:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:53,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:53,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:53,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:16:53,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 05:16:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:53,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 05:16:53,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:54,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:16:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:16:56,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033350084] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:16:56,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:16:56,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 19] total 48 [2023-04-02 05:16:56,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951133749] [2023-04-02 05:16:56,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:16:56,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-04-02 05:16:56,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:56,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-04-02 05:16:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2023-04-02 05:16:56,383 INFO L87 Difference]: Start difference. First operand 12293 states and 14955 transitions. Second operand has 48 states, 45 states have (on average 4.355555555555555) internal successors, (196), 40 states have internal predecessors, (196), 19 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (35), 16 states have call predecessors, (35), 16 states have call successors, (35) [2023-04-02 05:17:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:19,670 INFO L93 Difference]: Finished difference Result 85373 states and 103911 transitions. [2023-04-02 05:17:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-04-02 05:17:19,671 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 4.355555555555555) internal successors, (196), 40 states have internal predecessors, (196), 19 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (35), 16 states have call predecessors, (35), 16 states have call successors, (35) Word has length 106 [2023-04-02 05:17:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:19,987 INFO L225 Difference]: With dead ends: 85373 [2023-04-02 05:17:19,987 INFO L226 Difference]: Without dead ends: 71517 [2023-04-02 05:17:20,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7032 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=3761, Invalid=21045, Unknown=0, NotChecked=0, Total=24806 [2023-04-02 05:17:20,047 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5008 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 1124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5008 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 4372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1124 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:20,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5008 Valid, 135 Invalid, 4372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1124 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 05:17:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71517 states. [2023-04-02 05:17:29,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71517 to 67636. [2023-04-02 05:17:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67636 states, 49097 states have (on average 1.1859380410208362) internal successors, (58226), 52562 states have internal predecessors, (58226), 7904 states have call successors, (7904), 7171 states have call predecessors, (7904), 10634 states have return successors, (16280), 7902 states have call predecessors, (16280), 7903 states have call successors, (16280) [2023-04-02 05:17:30,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67636 states to 67636 states and 82410 transitions. [2023-04-02 05:17:30,195 INFO L78 Accepts]: Start accepts. Automaton has 67636 states and 82410 transitions. Word has length 106 [2023-04-02 05:17:30,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:30,195 INFO L495 AbstractCegarLoop]: Abstraction has 67636 states and 82410 transitions. [2023-04-02 05:17:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 4.355555555555555) internal successors, (196), 40 states have internal predecessors, (196), 19 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (35), 16 states have call predecessors, (35), 16 states have call successors, (35) [2023-04-02 05:17:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 67636 states and 82410 transitions. [2023-04-02 05:17:30,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-02 05:17:30,198 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:30,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:17:30,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 05:17:30,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:30,405 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:30,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1856855594, now seen corresponding path program 1 times [2023-04-02 05:17:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447102315] [2023-04-02 05:17:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:30,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 05:17:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:17:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:17:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:17:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:17:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:17:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:17:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 05:17:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:17:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 05:17:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:17:31,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:31,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447102315] [2023-04-02 05:17:31,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447102315] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:17:31,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001635092] [2023-04-02 05:17:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:31,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:17:31,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:17:31,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:17:31,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 05:17:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 59 conjunts are in the unsatisfiable core [2023-04-02 05:17:31,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:17:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:36,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:17:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 05:17:43,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001635092] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:17:43,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:17:43,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 26] total 69 [2023-04-02 05:17:43,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910198605] [2023-04-02 05:17:43,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:17:43,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-04-02 05:17:43,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-04-02 05:17:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2023-04-02 05:17:43,043 INFO L87 Difference]: Start difference. First operand 67636 states and 82410 transitions. Second operand has 69 states, 65 states have (on average 3.0153846153846153) internal successors, (196), 60 states have internal predecessors, (196), 20 states have call successors, (37), 18 states have call predecessors, (37), 18 states have return successors, (34), 15 states have call predecessors, (34), 19 states have call successors, (34)