./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:38:17,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:38:17,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:38:17,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:38:17,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:38:17,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:38:17,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:38:17,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:38:17,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:38:17,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:38:17,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:38:17,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:38:17,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:38:17,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:38:17,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:38:17,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:38:17,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:38:17,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:38:17,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:38:17,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:38:17,671 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:38:17,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:38:17,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:38:17,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:38:17,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:38:17,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:38:17,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:38:17,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:38:17,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:38:17,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:38:17,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:38:17,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:38:17,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:38:17,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:38:17,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:38:17,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:38:17,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:38:17,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:38:17,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:38:17,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:38:17,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:38:17,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:38:17,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:38:17,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:38:17,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:38:17,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:38:17,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:38:17,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:38:17,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:38:17,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:38:17,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:38:17,727 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:38:17,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:38:17,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:38:17,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:38:17,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:38:17,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:38:17,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:38:17,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:38:17,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:38:17,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:38:17,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:38:17,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:38:17,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:38:17,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:38:17,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:38:17,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:38:17,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:38:17,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:38:17,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:38:17,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:38:17,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:38:17,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:38:17,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:38:17,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:38:17,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:38:17,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 [2022-07-12 06:38:17,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:38:17,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:38:17,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:38:17,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:38:17,994 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:38:17,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2022-07-12 06:38:18,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc49b582d/d34b3aeb5acc4fc9873b651ade31b784/FLAG7283412c0 [2022-07-12 06:38:18,542 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:38:18,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2022-07-12 06:38:18,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc49b582d/d34b3aeb5acc4fc9873b651ade31b784/FLAG7283412c0 [2022-07-12 06:38:18,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc49b582d/d34b3aeb5acc4fc9873b651ade31b784 [2022-07-12 06:38:18,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:38:18,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:38:18,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:38:18,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:38:18,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:38:18,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:38:18" (1/1) ... [2022-07-12 06:38:18,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aee3677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:18, skipping insertion in model container [2022-07-12 06:38:18,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:38:18" (1/1) ... [2022-07-12 06:38:18,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:38:18,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:38:19,136 WARN L230 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_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2022-07-12 06:38:19,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:38:19,146 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:38:19,192 WARN L230 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_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2022-07-12 06:38:19,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:38:19,209 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:38:19,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19 WrapperNode [2022-07-12 06:38:19,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:38:19,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:38:19,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:38:19,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:38:19,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,267 INFO L137 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 415 [2022-07-12 06:38:19,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:38:19,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:38:19,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:38:19,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:38:19,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:38:19,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:38:19,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:38:19,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:38:19,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (1/1) ... [2022-07-12 06:38:19,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:38:19,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:19,347 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) [2022-07-12 06:38:19,358 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 [2022-07-12 06:38:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:38:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2022-07-12 06:38:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2022-07-12 06:38:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-12 06:38:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-12 06:38:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2022-07-12 06:38:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2022-07-12 06:38:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2022-07-12 06:38:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2022-07-12 06:38:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2022-07-12 06:38:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2022-07-12 06:38:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:38:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:38:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:38:19,490 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:38:19,492 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:38:19,973 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:38:19,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:38:19,988 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 06:38:19,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:38:19 BoogieIcfgContainer [2022-07-12 06:38:19,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:38:19,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:38:19,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:38:19,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:38:19,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:38:18" (1/3) ... [2022-07-12 06:38:19,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d13e4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:38:19, skipping insertion in model container [2022-07-12 06:38:19,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:38:19" (2/3) ... [2022-07-12 06:38:19,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d13e4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:38:19, skipping insertion in model container [2022-07-12 06:38:19,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:38:19" (3/3) ... [2022-07-12 06:38:20,000 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2022-07-12 06:38:20,014 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:38:20,014 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:38:20,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:38:20,076 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78e0d62f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e44df6a [2022-07-12 06:38:20,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:38:20,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 150 states have internal predecessors, (235), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-12 06:38:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 06:38:20,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:20,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:20,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash 373059156, now seen corresponding path program 1 times [2022-07-12 06:38:20,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:20,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605954439] [2022-07-12 06:38:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:38:20,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:20,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605954439] [2022-07-12 06:38:20,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605954439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:20,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:20,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134378588] [2022-07-12 06:38:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:20,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:20,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:20,344 INFO L87 Difference]: Start difference. First operand has 185 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 150 states have internal predecessors, (235), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:38:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:20,488 INFO L93 Difference]: Finished difference Result 375 states and 641 transitions. [2022-07-12 06:38:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:20,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-12 06:38:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:20,503 INFO L225 Difference]: With dead ends: 375 [2022-07-12 06:38:20,503 INFO L226 Difference]: Without dead ends: 189 [2022-07-12 06:38:20,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:20,511 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 18 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:20,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 832 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:38:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-12 06:38:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2022-07-12 06:38:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 148 states have (on average 1.5337837837837838) internal successors, (227), 151 states have internal predecessors, (227), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-12 06:38:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 291 transitions. [2022-07-12 06:38:20,565 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 291 transitions. Word has length 15 [2022-07-12 06:38:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:20,565 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 291 transitions. [2022-07-12 06:38:20,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:38:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 291 transitions. [2022-07-12 06:38:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 06:38:20,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:20,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:20,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:38:20,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:20,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1034031296, now seen corresponding path program 1 times [2022-07-12 06:38:20,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:20,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934342042] [2022-07-12 06:38:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:20,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:38:20,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:20,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934342042] [2022-07-12 06:38:20,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934342042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:20,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:20,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416624043] [2022-07-12 06:38:20,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:20,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:20,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:20,652 INFO L87 Difference]: Start difference. First operand 187 states and 291 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:38:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:20,730 INFO L93 Difference]: Finished difference Result 387 states and 605 transitions. [2022-07-12 06:38:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:20,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-12 06:38:20,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:20,733 INFO L225 Difference]: With dead ends: 387 [2022-07-12 06:38:20,733 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 06:38:20,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:20,736 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 25 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:20,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 06:38:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2022-07-12 06:38:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.5157232704402517) internal successors, (241), 162 states have internal predecessors, (241), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 06:38:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 307 transitions. [2022-07-12 06:38:20,775 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 307 transitions. Word has length 16 [2022-07-12 06:38:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:20,776 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 307 transitions. [2022-07-12 06:38:20,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:38:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 307 transitions. [2022-07-12 06:38:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-12 06:38:20,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:20,778 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] [2022-07-12 06:38:20,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:38:20,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1490256581, now seen corresponding path program 1 times [2022-07-12 06:38:20,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:20,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560526149] [2022-07-12 06:38:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:20,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:38:20,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:20,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560526149] [2022-07-12 06:38:20,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560526149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:20,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:20,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:38:20,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241351752] [2022-07-12 06:38:20,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:20,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:38:20,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:20,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:38:20,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:38:20,843 INFO L87 Difference]: Start difference. First operand 200 states and 307 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:38:20,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:20,862 INFO L93 Difference]: Finished difference Result 419 states and 651 transitions. [2022-07-12 06:38:20,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:38:20,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-12 06:38:20,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:20,865 INFO L225 Difference]: With dead ends: 419 [2022-07-12 06:38:20,866 INFO L226 Difference]: Without dead ends: 229 [2022-07-12 06:38:20,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:38:20,868 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 22 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:20,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 568 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-12 06:38:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 202. [2022-07-12 06:38:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.5093167701863355) internal successors, (243), 164 states have internal predecessors, (243), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 06:38:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 309 transitions. [2022-07-12 06:38:20,894 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 309 transitions. Word has length 23 [2022-07-12 06:38:20,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:20,895 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 309 transitions. [2022-07-12 06:38:20,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:38:20,895 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 309 transitions. [2022-07-12 06:38:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-12 06:38:20,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:20,897 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] [2022-07-12 06:38:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:38:20,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:20,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1716180554, now seen corresponding path program 1 times [2022-07-12 06:38:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:20,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641986479] [2022-07-12 06:38:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:20,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:38:20,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:20,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641986479] [2022-07-12 06:38:20,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641986479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:20,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:20,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:20,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019407216] [2022-07-12 06:38:20,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:20,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:20,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:20,987 INFO L87 Difference]: Start difference. First operand 202 states and 309 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:38:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:21,025 INFO L93 Difference]: Finished difference Result 460 states and 720 transitions. [2022-07-12 06:38:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:21,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2022-07-12 06:38:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:21,029 INFO L225 Difference]: With dead ends: 460 [2022-07-12 06:38:21,029 INFO L226 Difference]: Without dead ends: 309 [2022-07-12 06:38:21,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:21,031 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 134 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:21,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 876 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-12 06:38:21,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 202. [2022-07-12 06:38:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.484472049689441) internal successors, (239), 164 states have internal predecessors, (239), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 06:38:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 305 transitions. [2022-07-12 06:38:21,050 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 305 transitions. Word has length 31 [2022-07-12 06:38:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:21,050 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 305 transitions. [2022-07-12 06:38:21,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:38:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 305 transitions. [2022-07-12 06:38:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-12 06:38:21,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:21,052 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:38:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:38:21,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -590315317, now seen corresponding path program 1 times [2022-07-12 06:38:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:21,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90103598] [2022-07-12 06:38:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:21,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:38:21,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90103598] [2022-07-12 06:38:21,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90103598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:21,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:21,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070064931] [2022-07-12 06:38:21,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:21,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:21,166 INFO L87 Difference]: Start difference. First operand 202 states and 305 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:38:21,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:21,219 INFO L93 Difference]: Finished difference Result 394 states and 599 transitions. [2022-07-12 06:38:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-12 06:38:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:21,225 INFO L225 Difference]: With dead ends: 394 [2022-07-12 06:38:21,225 INFO L226 Difference]: Without dead ends: 204 [2022-07-12 06:38:21,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:21,237 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:21,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1108 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-12 06:38:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2022-07-12 06:38:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.4782608695652173) internal successors, (238), 164 states have internal predecessors, (238), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 06:38:21,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2022-07-12 06:38:21,258 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 304 transitions. Word has length 32 [2022-07-12 06:38:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:21,258 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 304 transitions. [2022-07-12 06:38:21,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:38:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 304 transitions. [2022-07-12 06:38:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-12 06:38:21,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:21,263 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:38:21,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:38:21,264 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1085391716, now seen corresponding path program 1 times [2022-07-12 06:38:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:21,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492558243] [2022-07-12 06:38:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:21,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:21,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:38:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492558243] [2022-07-12 06:38:21,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492558243] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677986362] [2022-07-12 06:38:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:21,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:21,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:21,373 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) [2022-07-12 06:38:21,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:38:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:21,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:38:21,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:38:21,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:38:21,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677986362] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:21,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:21,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-12 06:38:21,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951764815] [2022-07-12 06:38:21,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:21,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:21,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:21,645 INFO L87 Difference]: Start difference. First operand 202 states and 304 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:38:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:21,707 INFO L93 Difference]: Finished difference Result 452 states and 695 transitions. [2022-07-12 06:38:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:21,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-07-12 06:38:21,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:21,710 INFO L225 Difference]: With dead ends: 452 [2022-07-12 06:38:21,710 INFO L226 Difference]: Without dead ends: 261 [2022-07-12 06:38:21,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:21,712 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 66 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:21,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1095 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-12 06:38:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2022-07-12 06:38:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 204 states have (on average 1.4558823529411764) internal successors, (297), 207 states have internal predecessors, (297), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-12 06:38:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 383 transitions. [2022-07-12 06:38:21,740 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 383 transitions. Word has length 35 [2022-07-12 06:38:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:21,740 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 383 transitions. [2022-07-12 06:38:21,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 06:38:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 383 transitions. [2022-07-12 06:38:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 06:38:21,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:21,742 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:21,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 06:38:21,957 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,SelfDestructingSolverStorable5 [2022-07-12 06:38:21,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:21,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1975524508, now seen corresponding path program 2 times [2022-07-12 06:38:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:21,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626366803] [2022-07-12 06:38:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-12 06:38:22,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:22,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626366803] [2022-07-12 06:38:22,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626366803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:22,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:22,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640495184] [2022-07-12 06:38:22,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:22,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:22,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:22,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:22,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:22,056 INFO L87 Difference]: Start difference. First operand 255 states and 383 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:38:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:22,104 INFO L93 Difference]: Finished difference Result 490 states and 756 transitions. [2022-07-12 06:38:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:22,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-12 06:38:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:22,110 INFO L225 Difference]: With dead ends: 490 [2022-07-12 06:38:22,111 INFO L226 Difference]: Without dead ends: 264 [2022-07-12 06:38:22,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:22,118 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 19 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:22,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 819 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-12 06:38:22,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2022-07-12 06:38:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 210 states have (on average 1.4523809523809523) internal successors, (305), 213 states have internal predecessors, (305), 43 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-12 06:38:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 391 transitions. [2022-07-12 06:38:22,148 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 391 transitions. Word has length 57 [2022-07-12 06:38:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:22,148 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 391 transitions. [2022-07-12 06:38:22,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:38:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 391 transitions. [2022-07-12 06:38:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 06:38:22,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:22,153 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:38:22,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash -64672629, now seen corresponding path program 1 times [2022-07-12 06:38:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:22,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172428702] [2022-07-12 06:38:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 06:38:22,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:22,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172428702] [2022-07-12 06:38:22,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172428702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:22,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:22,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:22,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119243225] [2022-07-12 06:38:22,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:22,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:22,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:22,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:22,257 INFO L87 Difference]: Start difference. First operand 262 states and 391 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:38:22,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:22,299 INFO L93 Difference]: Finished difference Result 534 states and 808 transitions. [2022-07-12 06:38:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:22,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-12 06:38:22,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:22,304 INFO L225 Difference]: With dead ends: 534 [2022-07-12 06:38:22,304 INFO L226 Difference]: Without dead ends: 301 [2022-07-12 06:38:22,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:22,306 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 24 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:22,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 833 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:22,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-12 06:38:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2022-07-12 06:38:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 242 states have (on average 1.4132231404958677) internal successors, (342), 245 states have internal predecessors, (342), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-12 06:38:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 434 transitions. [2022-07-12 06:38:22,330 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 434 transitions. Word has length 57 [2022-07-12 06:38:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:22,332 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 434 transitions. [2022-07-12 06:38:22,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:38:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 434 transitions. [2022-07-12 06:38:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 06:38:22,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:22,333 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 06:38:22,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:38:22,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:22,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:22,334 INFO L85 PathProgramCache]: Analyzing trace with hash 519762270, now seen corresponding path program 1 times [2022-07-12 06:38:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:22,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313719820] [2022-07-12 06:38:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:22,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-12 06:38:22,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:22,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313719820] [2022-07-12 06:38:22,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313719820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:22,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:22,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:22,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119151404] [2022-07-12 06:38:22,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:22,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:22,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:22,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:22,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:22,462 INFO L87 Difference]: Start difference. First operand 298 states and 434 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 06:38:22,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:22,495 INFO L93 Difference]: Finished difference Result 545 states and 807 transitions. [2022-07-12 06:38:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:22,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-07-12 06:38:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:22,500 INFO L225 Difference]: With dead ends: 545 [2022-07-12 06:38:22,500 INFO L226 Difference]: Without dead ends: 300 [2022-07-12 06:38:22,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:22,504 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:22,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1108 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-12 06:38:22,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2022-07-12 06:38:22,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 242 states have (on average 1.4008264462809918) internal successors, (339), 245 states have internal predecessors, (339), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-12 06:38:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 431 transitions. [2022-07-12 06:38:22,521 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 431 transitions. Word has length 75 [2022-07-12 06:38:22,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:22,522 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 431 transitions. [2022-07-12 06:38:22,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 06:38:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 431 transitions. [2022-07-12 06:38:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 06:38:22,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:22,524 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:22,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:38:22,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash 532920743, now seen corresponding path program 1 times [2022-07-12 06:38:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:22,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330244779] [2022-07-12 06:38:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:22,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-12 06:38:22,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:22,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330244779] [2022-07-12 06:38:22,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330244779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:22,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:22,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:22,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823176145] [2022-07-12 06:38:22,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:22,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:22,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:22,647 INFO L87 Difference]: Start difference. First operand 298 states and 431 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 06:38:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:22,687 INFO L93 Difference]: Finished difference Result 582 states and 863 transitions. [2022-07-12 06:38:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2022-07-12 06:38:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:22,691 INFO L225 Difference]: With dead ends: 582 [2022-07-12 06:38:22,692 INFO L226 Difference]: Without dead ends: 342 [2022-07-12 06:38:22,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:22,694 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 25 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:22,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 833 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-07-12 06:38:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 339. [2022-07-12 06:38:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 279 states have (on average 1.3655913978494623) internal successors, (381), 282 states have internal predecessors, (381), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-12 06:38:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 479 transitions. [2022-07-12 06:38:22,710 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 479 transitions. Word has length 104 [2022-07-12 06:38:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:22,713 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 479 transitions. [2022-07-12 06:38:22,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 06:38:22,713 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 479 transitions. [2022-07-12 06:38:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 06:38:22,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:22,718 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:38:22,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:22,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1654716533, now seen corresponding path program 1 times [2022-07-12 06:38:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:22,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721584576] [2022-07-12 06:38:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:22,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-12 06:38:22,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:22,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721584576] [2022-07-12 06:38:22,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721584576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:22,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:22,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:22,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545705234] [2022-07-12 06:38:22,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:22,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:22,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:22,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:22,792 INFO L87 Difference]: Start difference. First operand 339 states and 479 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 06:38:22,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:22,828 INFO L93 Difference]: Finished difference Result 608 states and 883 transitions. [2022-07-12 06:38:22,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:38:22,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2022-07-12 06:38:22,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:22,831 INFO L225 Difference]: With dead ends: 608 [2022-07-12 06:38:22,831 INFO L226 Difference]: Without dead ends: 333 [2022-07-12 06:38:22,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:22,833 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 15 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:22,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 792 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-12 06:38:22,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-07-12 06:38:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 274 states have (on average 1.3467153284671534) internal successors, (369), 277 states have internal predecessors, (369), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-12 06:38:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 465 transitions. [2022-07-12 06:38:22,848 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 465 transitions. Word has length 105 [2022-07-12 06:38:22,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:22,849 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 465 transitions. [2022-07-12 06:38:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 06:38:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 465 transitions. [2022-07-12 06:38:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 06:38:22,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:22,850 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 06:38:22,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:38:22,851 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:22,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:22,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1120089015, now seen corresponding path program 1 times [2022-07-12 06:38:22,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:22,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449396399] [2022-07-12 06:38:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-12 06:38:22,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:22,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449396399] [2022-07-12 06:38:22,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449396399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:22,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:22,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786860944] [2022-07-12 06:38:22,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:22,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:22,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:22,952 INFO L87 Difference]: Start difference. First operand 333 states and 465 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:38:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:22,974 INFO L93 Difference]: Finished difference Result 583 states and 832 transitions. [2022-07-12 06:38:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:22,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2022-07-12 06:38:22,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:22,976 INFO L225 Difference]: With dead ends: 583 [2022-07-12 06:38:22,977 INFO L226 Difference]: Without dead ends: 335 [2022-07-12 06:38:22,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:22,978 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:22,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1093 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-12 06:38:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2022-07-12 06:38:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 274 states have (on average 1.3357664233576643) internal successors, (366), 277 states have internal predecessors, (366), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-12 06:38:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 462 transitions. [2022-07-12 06:38:22,991 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 462 transitions. Word has length 124 [2022-07-12 06:38:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:22,992 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 462 transitions. [2022-07-12 06:38:22,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:38:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 462 transitions. [2022-07-12 06:38:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 06:38:22,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:22,994 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:22,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:38:22,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:22,995 INFO L85 PathProgramCache]: Analyzing trace with hash -939930564, now seen corresponding path program 1 times [2022-07-12 06:38:22,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:22,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611812759] [2022-07-12 06:38:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:22,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-12 06:38:23,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:23,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611812759] [2022-07-12 06:38:23,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611812759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:23,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:23,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155067250] [2022-07-12 06:38:23,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:23,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:23,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:23,098 INFO L87 Difference]: Start difference. First operand 333 states and 462 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:38:23,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:23,148 INFO L93 Difference]: Finished difference Result 546 states and 792 transitions. [2022-07-12 06:38:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:38:23,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2022-07-12 06:38:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:23,150 INFO L225 Difference]: With dead ends: 546 [2022-07-12 06:38:23,151 INFO L226 Difference]: Without dead ends: 331 [2022-07-12 06:38:23,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:23,152 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:23,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 760 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-12 06:38:23,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2022-07-12 06:38:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 273 states have (on average 1.3333333333333333) internal successors, (364), 276 states have internal predecessors, (364), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-12 06:38:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2022-07-12 06:38:23,165 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 157 [2022-07-12 06:38:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:23,165 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2022-07-12 06:38:23,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:38:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2022-07-12 06:38:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-12 06:38:23,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:23,168 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:23,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:38:23,168 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:23,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:23,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1043007713, now seen corresponding path program 1 times [2022-07-12 06:38:23,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:23,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615680817] [2022-07-12 06:38:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-07-12 06:38:23,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:23,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615680817] [2022-07-12 06:38:23,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615680817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:23,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:23,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497826934] [2022-07-12 06:38:23,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:23,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:23,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:23,278 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:38:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:23,319 INFO L93 Difference]: Finished difference Result 486 states and 688 transitions. [2022-07-12 06:38:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:23,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 172 [2022-07-12 06:38:23,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:23,322 INFO L225 Difference]: With dead ends: 486 [2022-07-12 06:38:23,322 INFO L226 Difference]: Without dead ends: 314 [2022-07-12 06:38:23,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:23,323 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 35 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:23,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 741 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-12 06:38:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-07-12 06:38:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 259 states have (on average 1.3243243243243243) internal successors, (343), 262 states have internal predecessors, (343), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-12 06:38:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 431 transitions. [2022-07-12 06:38:23,334 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 431 transitions. Word has length 172 [2022-07-12 06:38:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:23,335 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 431 transitions. [2022-07-12 06:38:23,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:38:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 431 transitions. [2022-07-12 06:38:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-12 06:38:23,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:23,343 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:23,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:38:23,343 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:23,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:23,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1497862393, now seen corresponding path program 1 times [2022-07-12 06:38:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:23,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69536751] [2022-07-12 06:38:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-12 06:38:23,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:23,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69536751] [2022-07-12 06:38:23,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69536751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:23,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:23,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:23,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687535097] [2022-07-12 06:38:23,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:23,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:23,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:23,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:23,422 INFO L87 Difference]: Start difference. First operand 314 states and 431 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:38:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:23,462 INFO L93 Difference]: Finished difference Result 469 states and 661 transitions. [2022-07-12 06:38:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:23,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 174 [2022-07-12 06:38:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:23,465 INFO L225 Difference]: With dead ends: 469 [2022-07-12 06:38:23,465 INFO L226 Difference]: Without dead ends: 295 [2022-07-12 06:38:23,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:23,466 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 30 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:23,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 745 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-12 06:38:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-07-12 06:38:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 243 states have (on average 1.316872427983539) internal successors, (320), 246 states have internal predecessors, (320), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-12 06:38:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 402 transitions. [2022-07-12 06:38:23,475 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 402 transitions. Word has length 174 [2022-07-12 06:38:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:23,475 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 402 transitions. [2022-07-12 06:38:23,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 06:38:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 402 transitions. [2022-07-12 06:38:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-12 06:38:23,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:23,477 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:23,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:38:23,478 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:23,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:23,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1367013378, now seen corresponding path program 1 times [2022-07-12 06:38:23,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:23,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093351399] [2022-07-12 06:38:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-12 06:38:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:23,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093351399] [2022-07-12 06:38:23,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093351399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:23,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:23,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73872908] [2022-07-12 06:38:23,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:23,566 INFO L87 Difference]: Start difference. First operand 295 states and 402 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-12 06:38:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:23,583 INFO L93 Difference]: Finished difference Result 449 states and 631 transitions. [2022-07-12 06:38:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 175 [2022-07-12 06:38:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:23,586 INFO L225 Difference]: With dead ends: 449 [2022-07-12 06:38:23,586 INFO L226 Difference]: Without dead ends: 295 [2022-07-12 06:38:23,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:23,587 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:23,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1072 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-12 06:38:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-07-12 06:38:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 243 states have (on average 1.2921810699588476) internal successors, (314), 246 states have internal predecessors, (314), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-12 06:38:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 396 transitions. [2022-07-12 06:38:23,597 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 396 transitions. Word has length 175 [2022-07-12 06:38:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:23,597 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 396 transitions. [2022-07-12 06:38:23,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-12 06:38:23,597 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 396 transitions. [2022-07-12 06:38:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-12 06:38:23,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:23,599 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:38:23,600 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash -987087320, now seen corresponding path program 1 times [2022-07-12 06:38:23,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:23,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751983554] [2022-07-12 06:38:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:23,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-12 06:38:23,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:23,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751983554] [2022-07-12 06:38:23,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751983554] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:23,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489193664] [2022-07-12 06:38:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:23,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:23,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:23,712 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) [2022-07-12 06:38:23,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 06:38:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:23,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:38:23,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-12 06:38:23,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-12 06:38:23,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489193664] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:23,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 06:38:23,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2022-07-12 06:38:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114085989] [2022-07-12 06:38:23,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:23,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:23,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:23,997 INFO L87 Difference]: Start difference. First operand 295 states and 396 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 06:38:24,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:24,031 INFO L93 Difference]: Finished difference Result 470 states and 653 transitions. [2022-07-12 06:38:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:38:24,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 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 182 [2022-07-12 06:38:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:24,033 INFO L225 Difference]: With dead ends: 470 [2022-07-12 06:38:24,033 INFO L226 Difference]: Without dead ends: 274 [2022-07-12 06:38:24,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:24,034 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 35 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:24,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 509 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-12 06:38:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-07-12 06:38:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 225 states have (on average 1.2844444444444445) internal successors, (289), 228 states have internal predecessors, (289), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-12 06:38:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2022-07-12 06:38:24,043 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 182 [2022-07-12 06:38:24,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:24,044 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2022-07-12 06:38:24,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 06:38:24,044 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2022-07-12 06:38:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 06:38:24,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:24,046 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:24,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:24,264 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,SelfDestructingSolverStorable16 [2022-07-12 06:38:24,265 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:24,265 INFO L85 PathProgramCache]: Analyzing trace with hash -140991269, now seen corresponding path program 1 times [2022-07-12 06:38:24,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:24,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151693604] [2022-07-12 06:38:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:24,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-12 06:38:24,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:24,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151693604] [2022-07-12 06:38:24,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151693604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:24,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:24,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:24,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741829439] [2022-07-12 06:38:24,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:24,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:24,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:24,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:24,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:24,358 INFO L87 Difference]: Start difference. First operand 274 states and 365 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-12 06:38:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:24,384 INFO L93 Difference]: Finished difference Result 427 states and 595 transitions. [2022-07-12 06:38:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:24,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 206 [2022-07-12 06:38:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:24,386 INFO L225 Difference]: With dead ends: 427 [2022-07-12 06:38:24,386 INFO L226 Difference]: Without dead ends: 280 [2022-07-12 06:38:24,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:24,387 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 6 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:24,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 785 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-12 06:38:24,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2022-07-12 06:38:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 228 states have (on average 1.280701754385965) internal successors, (292), 231 states have internal predecessors, (292), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-12 06:38:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 368 transitions. [2022-07-12 06:38:24,398 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 368 transitions. Word has length 206 [2022-07-12 06:38:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:24,399 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 368 transitions. [2022-07-12 06:38:24,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-12 06:38:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 368 transitions. [2022-07-12 06:38:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 06:38:24,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:24,402 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 06:38:24,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:38:24,402 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:24,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:24,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1871832371, now seen corresponding path program 1 times [2022-07-12 06:38:24,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:24,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472587977] [2022-07-12 06:38:24,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:24,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-12 06:38:24,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:24,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472587977] [2022-07-12 06:38:24,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472587977] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:24,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801866202] [2022-07-12 06:38:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:24,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:24,536 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) [2022-07-12 06:38:24,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 06:38:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:24,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:38:24,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-12 06:38:24,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:24,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801866202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:24,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:24,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 06:38:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219517033] [2022-07-12 06:38:24,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:24,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:24,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:24,724 INFO L87 Difference]: Start difference. First operand 278 states and 368 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-12 06:38:24,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:24,750 INFO L93 Difference]: Finished difference Result 436 states and 602 transitions. [2022-07-12 06:38:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:24,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 215 [2022-07-12 06:38:24,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:24,753 INFO L225 Difference]: With dead ends: 436 [2022-07-12 06:38:24,753 INFO L226 Difference]: Without dead ends: 285 [2022-07-12 06:38:24,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:38:24,754 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 7 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:24,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 790 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-12 06:38:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 283. [2022-07-12 06:38:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 232 states have (on average 1.2758620689655173) internal successors, (296), 235 states have internal predecessors, (296), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-12 06:38:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 372 transitions. [2022-07-12 06:38:24,764 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 372 transitions. Word has length 215 [2022-07-12 06:38:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:24,766 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 372 transitions. [2022-07-12 06:38:24,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-12 06:38:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 372 transitions. [2022-07-12 06:38:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-12 06:38:24,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:24,769 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 06:38:24,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:24,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:24,989 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:24,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1464887465, now seen corresponding path program 1 times [2022-07-12 06:38:24,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:24,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397297196] [2022-07-12 06:38:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:24,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:38:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-12 06:38:25,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:25,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397297196] [2022-07-12 06:38:25,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397297196] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:25,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246271382] [2022-07-12 06:38:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:25,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:25,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:25,123 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) [2022-07-12 06:38:25,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 06:38:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:38:25,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-12 06:38:25,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:25,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246271382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:25,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:25,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 06:38:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074844870] [2022-07-12 06:38:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:25,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:25,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:25,296 INFO L87 Difference]: Start difference. First operand 283 states and 372 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 06:38:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:25,328 INFO L93 Difference]: Finished difference Result 438 states and 600 transitions. [2022-07-12 06:38:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:38:25,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 225 [2022-07-12 06:38:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:25,330 INFO L225 Difference]: With dead ends: 438 [2022-07-12 06:38:25,330 INFO L226 Difference]: Without dead ends: 282 [2022-07-12 06:38:25,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:38:25,331 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 7 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:25,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 776 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-12 06:38:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-07-12 06:38:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 232 states have (on average 1.2629310344827587) internal successors, (293), 234 states have internal predecessors, (293), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-12 06:38:25,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 367 transitions. [2022-07-12 06:38:25,341 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 367 transitions. Word has length 225 [2022-07-12 06:38:25,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:25,341 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 367 transitions. [2022-07-12 06:38:25,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 06:38:25,341 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 367 transitions. [2022-07-12 06:38:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-12 06:38:25,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:25,344 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 06:38:25,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:25,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:25,567 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:25,568 INFO L85 PathProgramCache]: Analyzing trace with hash 147339615, now seen corresponding path program 1 times [2022-07-12 06:38:25,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:25,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338332488] [2022-07-12 06:38:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:25,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:38:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 06:38:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-12 06:38:25,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:25,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338332488] [2022-07-12 06:38:25,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338332488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:25,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:25,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:25,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595428691] [2022-07-12 06:38:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:25,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:25,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:25,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:25,667 INFO L87 Difference]: Start difference. First operand 282 states and 367 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-12 06:38:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:25,890 INFO L93 Difference]: Finished difference Result 481 states and 662 transitions. [2022-07-12 06:38:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:38:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 235 [2022-07-12 06:38:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:25,893 INFO L225 Difference]: With dead ends: 481 [2022-07-12 06:38:25,893 INFO L226 Difference]: Without dead ends: 326 [2022-07-12 06:38:25,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:25,894 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 187 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:25,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 644 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:38:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-12 06:38:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2022-07-12 06:38:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 232 states have (on average 1.2586206896551724) internal successors, (292), 233 states have internal predecessors, (292), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-12 06:38:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 364 transitions. [2022-07-12 06:38:25,906 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 364 transitions. Word has length 235 [2022-07-12 06:38:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:25,907 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 364 transitions. [2022-07-12 06:38:25,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-12 06:38:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 364 transitions. [2022-07-12 06:38:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-12 06:38:25,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:25,909 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 06:38:25,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 06:38:25,910 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:25,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash -459103186, now seen corresponding path program 1 times [2022-07-12 06:38:25,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:25,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635578195] [2022-07-12 06:38:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:25,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:38:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 06:38:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-12 06:38:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:26,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635578195] [2022-07-12 06:38:26,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635578195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:26,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:26,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:26,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884045210] [2022-07-12 06:38:26,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:26,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:26,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:26,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:26,064 INFO L87 Difference]: Start difference. First operand 281 states and 364 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 06:38:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:26,494 INFO L93 Difference]: Finished difference Result 659 states and 882 transitions. [2022-07-12 06:38:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 06:38:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 237 [2022-07-12 06:38:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:26,498 INFO L225 Difference]: With dead ends: 659 [2022-07-12 06:38:26,498 INFO L226 Difference]: Without dead ends: 505 [2022-07-12 06:38:26,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:38:26,500 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 423 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:26,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 794 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:38:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-07-12 06:38:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 442. [2022-07-12 06:38:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 363 states have (on average 1.303030303030303) internal successors, (473), 365 states have internal predecessors, (473), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-12 06:38:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 581 transitions. [2022-07-12 06:38:26,540 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 581 transitions. Word has length 237 [2022-07-12 06:38:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:26,540 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 581 transitions. [2022-07-12 06:38:26,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 06:38:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 581 transitions. [2022-07-12 06:38:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-12 06:38:26,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:26,544 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:26,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 06:38:26,544 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:26,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1140511748, now seen corresponding path program 1 times [2022-07-12 06:38:26,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:26,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828609913] [2022-07-12 06:38:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:26,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:38:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 06:38:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-12 06:38:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-12 06:38:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-12 06:38:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-12 06:38:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:26,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828609913] [2022-07-12 06:38:26,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828609913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:26,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:26,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065921345] [2022-07-12 06:38:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:26,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:26,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:26,683 INFO L87 Difference]: Start difference. First operand 442 states and 581 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:38:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:27,003 INFO L93 Difference]: Finished difference Result 935 states and 1283 transitions. [2022-07-12 06:38:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 265 [2022-07-12 06:38:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:27,007 INFO L225 Difference]: With dead ends: 935 [2022-07-12 06:38:27,007 INFO L226 Difference]: Without dead ends: 697 [2022-07-12 06:38:27,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:27,009 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 218 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:27,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 598 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:38:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-07-12 06:38:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 535. [2022-07-12 06:38:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 446 states have (on average 1.3139013452914798) internal successors, (586), 449 states have internal predecessors, (586), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-07-12 06:38:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 704 transitions. [2022-07-12 06:38:27,037 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 704 transitions. Word has length 265 [2022-07-12 06:38:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:27,037 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 704 transitions. [2022-07-12 06:38:27,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:38:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 704 transitions. [2022-07-12 06:38:27,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-12 06:38:27,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:27,040 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:27,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 06:38:27,041 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash -324333967, now seen corresponding path program 1 times [2022-07-12 06:38:27,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:27,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7301270] [2022-07-12 06:38:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:27,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:38:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 06:38:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-12 06:38:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-12 06:38:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-12 06:38:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-12 06:38:27,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:27,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7301270] [2022-07-12 06:38:27,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7301270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:27,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:27,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:38:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165898118] [2022-07-12 06:38:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:27,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:38:27,201 INFO L87 Difference]: Start difference. First operand 535 states and 704 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:38:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:27,491 INFO L93 Difference]: Finished difference Result 1133 states and 1548 transitions. [2022-07-12 06:38:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 266 [2022-07-12 06:38:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:27,496 INFO L225 Difference]: With dead ends: 1133 [2022-07-12 06:38:27,496 INFO L226 Difference]: Without dead ends: 837 [2022-07-12 06:38:27,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:27,498 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 221 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:27,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 632 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:38:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-07-12 06:38:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 659. [2022-07-12 06:38:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 558 states have (on average 1.3261648745519714) internal successors, (740), 563 states have internal predecessors, (740), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-12 06:38:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 870 transitions. [2022-07-12 06:38:27,537 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 870 transitions. Word has length 266 [2022-07-12 06:38:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:27,537 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 870 transitions. [2022-07-12 06:38:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:38:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 870 transitions. [2022-07-12 06:38:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-12 06:38:27,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:27,541 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:27,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 06:38:27,542 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:27,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:27,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1407639519, now seen corresponding path program 1 times [2022-07-12 06:38:27,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:27,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34540663] [2022-07-12 06:38:27,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:27,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-12 06:38:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-12 06:38:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2022-07-12 06:38:27,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34540663] [2022-07-12 06:38:27,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34540663] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:27,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700471308] [2022-07-12 06:38:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:27,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:27,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:27,713 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) [2022-07-12 06:38:27,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 06:38:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:27,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:38:27,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-12 06:38:27,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:27,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700471308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:27,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:27,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-12 06:38:27,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357900178] [2022-07-12 06:38:27,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:27,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:38:27,945 INFO L87 Difference]: Start difference. First operand 659 states and 870 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:38:28,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:28,027 INFO L93 Difference]: Finished difference Result 1053 states and 1426 transitions. [2022-07-12 06:38:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:28,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 267 [2022-07-12 06:38:28,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:28,031 INFO L225 Difference]: With dead ends: 1053 [2022-07-12 06:38:28,031 INFO L226 Difference]: Without dead ends: 659 [2022-07-12 06:38:28,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:38:28,033 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 51 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:28,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 693 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-12 06:38:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-12 06:38:28,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 558 states have (on average 1.3154121863799284) internal successors, (734), 563 states have internal predecessors, (734), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-12 06:38:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 864 transitions. [2022-07-12 06:38:28,074 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 864 transitions. Word has length 267 [2022-07-12 06:38:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:28,075 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 864 transitions. [2022-07-12 06:38:28,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:38:28,076 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 864 transitions. [2022-07-12 06:38:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-12 06:38:28,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:28,079 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:28,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:28,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-12 06:38:28,295 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:28,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:28,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1853291600, now seen corresponding path program 1 times [2022-07-12 06:38:28,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:28,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913906020] [2022-07-12 06:38:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:28,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-12 06:38:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2022-07-12 06:38:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913906020] [2022-07-12 06:38:28,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913906020] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:28,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757644098] [2022-07-12 06:38:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:28,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:28,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:28,461 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) [2022-07-12 06:38:28,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 06:38:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:28,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:38:28,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-12 06:38:28,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:28,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757644098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:28,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:28,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-12 06:38:28,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733717886] [2022-07-12 06:38:28,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:28,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:38:28,679 INFO L87 Difference]: Start difference. First operand 659 states and 864 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:38:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:28,753 INFO L93 Difference]: Finished difference Result 1053 states and 1412 transitions. [2022-07-12 06:38:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 268 [2022-07-12 06:38:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:28,757 INFO L225 Difference]: With dead ends: 1053 [2022-07-12 06:38:28,757 INFO L226 Difference]: Without dead ends: 671 [2022-07-12 06:38:28,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:38:28,759 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 15 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:28,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 716 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-12 06:38:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2022-07-12 06:38:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 568 states have (on average 1.3169014084507042) internal successors, (748), 573 states have internal predecessors, (748), 65 states have call successors, (65), 37 states have call predecessors, (65), 37 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-12 06:38:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 878 transitions. [2022-07-12 06:38:28,793 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 878 transitions. Word has length 268 [2022-07-12 06:38:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:28,794 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 878 transitions. [2022-07-12 06:38:28,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:38:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 878 transitions. [2022-07-12 06:38:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-12 06:38:28,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:28,796 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:28,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-12 06:38:29,020 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1384676539, now seen corresponding path program 1 times [2022-07-12 06:38:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521849350] [2022-07-12 06:38:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:38:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-12 06:38:29,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:29,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521849350] [2022-07-12 06:38:29,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521849350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:29,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:29,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:38:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279008293] [2022-07-12 06:38:29,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:29,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:38:29,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:38:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:38:29,184 INFO L87 Difference]: Start difference. First operand 671 states and 878 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 06:38:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:29,597 INFO L93 Difference]: Finished difference Result 947 states and 1309 transitions. [2022-07-12 06:38:29,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 06:38:29,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 269 [2022-07-12 06:38:29,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:29,602 INFO L225 Difference]: With dead ends: 947 [2022-07-12 06:38:29,603 INFO L226 Difference]: Without dead ends: 945 [2022-07-12 06:38:29,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:38:29,604 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 264 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:29,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1683 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:38:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-07-12 06:38:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 677. [2022-07-12 06:38:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 572 states have (on average 1.3146853146853146) internal successors, (752), 578 states have internal predecessors, (752), 66 states have call successors, (66), 38 states have call predecessors, (66), 38 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2022-07-12 06:38:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 884 transitions. [2022-07-12 06:38:29,648 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 884 transitions. Word has length 269 [2022-07-12 06:38:29,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:29,648 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 884 transitions. [2022-07-12 06:38:29,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 06:38:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 884 transitions. [2022-07-12 06:38:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-12 06:38:29,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:29,650 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:29,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 06:38:29,651 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:29,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1259990170, now seen corresponding path program 1 times [2022-07-12 06:38:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:29,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780404909] [2022-07-12 06:38:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:38:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-12 06:38:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-12 06:38:29,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:29,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780404909] [2022-07-12 06:38:29,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780404909] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:29,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844245310] [2022-07-12 06:38:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:29,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:29,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:29,842 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) [2022-07-12 06:38:29,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 06:38:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:30,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 06:38:30,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-12 06:38:30,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-12 06:38:30,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844245310] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:30,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:30,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2022-07-12 06:38:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903482742] [2022-07-12 06:38:30,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 06:38:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 06:38:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-12 06:38:30,508 INFO L87 Difference]: Start difference. First operand 677 states and 884 transitions. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-12 06:38:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:32,240 INFO L93 Difference]: Finished difference Result 1937 states and 2719 transitions. [2022-07-12 06:38:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 06:38:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 277 [2022-07-12 06:38:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:32,248 INFO L225 Difference]: With dead ends: 1937 [2022-07-12 06:38:32,248 INFO L226 Difference]: Without dead ends: 1537 [2022-07-12 06:38:32,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 06:38:32,250 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 767 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:32,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2886 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 06:38:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2022-07-12 06:38:32,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 948. [2022-07-12 06:38:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 803 states have (on average 1.3088418430884183) internal successors, (1051), 810 states have internal predecessors, (1051), 90 states have call successors, (90), 51 states have call predecessors, (90), 54 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2022-07-12 06:38:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1236 transitions. [2022-07-12 06:38:32,306 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1236 transitions. Word has length 277 [2022-07-12 06:38:32,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:32,307 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1236 transitions. [2022-07-12 06:38:32,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-12 06:38:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1236 transitions. [2022-07-12 06:38:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-12 06:38:32,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:32,309 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:32,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:32,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:32,523 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:32,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2073363109, now seen corresponding path program 1 times [2022-07-12 06:38:32,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:32,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521768107] [2022-07-12 06:38:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:32,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:38:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-12 06:38:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2022-07-12 06:38:32,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:32,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521768107] [2022-07-12 06:38:32,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521768107] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:32,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003170006] [2022-07-12 06:38:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:32,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:32,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:32,680 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:32,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 06:38:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:32,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:38:32,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-12 06:38:32,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:32,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003170006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:32,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:32,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 06:38:32,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344283136] [2022-07-12 06:38:32,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:32,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:32,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:32,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:32,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:32,902 INFO L87 Difference]: Start difference. First operand 948 states and 1236 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 06:38:32,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:32,981 INFO L93 Difference]: Finished difference Result 1759 states and 2336 transitions. [2022-07-12 06:38:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:32,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 277 [2022-07-12 06:38:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:32,986 INFO L225 Difference]: With dead ends: 1759 [2022-07-12 06:38:32,986 INFO L226 Difference]: Without dead ends: 932 [2022-07-12 06:38:32,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:38:32,991 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 11 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:32,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 716 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-07-12 06:38:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2022-07-12 06:38:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 792 states have (on average 1.2967171717171717) internal successors, (1027), 799 states have internal predecessors, (1027), 86 states have call successors, (86), 51 states have call predecessors, (86), 53 states have return successors, (90), 85 states have call predecessors, (90), 86 states have call successors, (90) [2022-07-12 06:38:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1203 transitions. [2022-07-12 06:38:33,040 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1203 transitions. Word has length 277 [2022-07-12 06:38:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:33,041 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1203 transitions. [2022-07-12 06:38:33,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 06:38:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1203 transitions. [2022-07-12 06:38:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-12 06:38:33,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:33,043 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:33,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:33,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-12 06:38:33,262 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:33,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:33,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1844923738, now seen corresponding path program 1 times [2022-07-12 06:38:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:33,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093437912] [2022-07-12 06:38:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:33,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 06:38:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:38:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 06:38:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-12 06:38:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-12 06:38:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-12 06:38:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-12 06:38:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-12 06:38:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-12 06:38:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-07-12 06:38:33,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:33,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093437912] [2022-07-12 06:38:33,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093437912] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:33,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225587765] [2022-07-12 06:38:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:33,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:33,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:33,387 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:33,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 06:38:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:33,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:38:33,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-07-12 06:38:33,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:33,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225587765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:33,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:33,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 06:38:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672845560] [2022-07-12 06:38:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:33,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:38:33,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:33,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:38:33,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:33,593 INFO L87 Difference]: Start difference. First operand 932 states and 1203 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 06:38:33,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:33,674 INFO L93 Difference]: Finished difference Result 1592 states and 2097 transitions. [2022-07-12 06:38:33,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:38:33,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 280 [2022-07-12 06:38:33,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:33,679 INFO L225 Difference]: With dead ends: 1592 [2022-07-12 06:38:33,679 INFO L226 Difference]: Without dead ends: 772 [2022-07-12 06:38:33,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:38:33,682 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 8 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:33,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 719 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:38:33,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2022-07-12 06:38:33,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2022-07-12 06:38:33,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 650 states have (on average 1.2938461538461539) internal successors, (841), 657 states have internal predecessors, (841), 77 states have call successors, (77), 44 states have call predecessors, (77), 44 states have return successors, (77), 74 states have call predecessors, (77), 77 states have call successors, (77) [2022-07-12 06:38:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 995 transitions. [2022-07-12 06:38:33,725 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 995 transitions. Word has length 280 [2022-07-12 06:38:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:33,725 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 995 transitions. [2022-07-12 06:38:33,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 06:38:33,725 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 995 transitions. [2022-07-12 06:38:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-12 06:38:33,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:33,727 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:33,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:33,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:33,951 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2138091921, now seen corresponding path program 1 times [2022-07-12 06:38:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:33,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742204014] [2022-07-12 06:38:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:38:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-12 06:38:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-12 06:38:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-12 06:38:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2022-07-12 06:38:34,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:34,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742204014] [2022-07-12 06:38:34,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742204014] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:34,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725427733] [2022-07-12 06:38:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:34,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:34,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:34,314 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:34,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 06:38:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:34,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 06:38:34,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-12 06:38:34,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:34,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725427733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:34,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:34,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2022-07-12 06:38:34,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976137535] [2022-07-12 06:38:34,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:34,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:38:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:38:34,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:38:34,672 INFO L87 Difference]: Start difference. First operand 772 states and 995 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:38:35,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:35,014 INFO L93 Difference]: Finished difference Result 1771 states and 2351 transitions. [2022-07-12 06:38:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:38:35,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 292 [2022-07-12 06:38:35,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:35,021 INFO L225 Difference]: With dead ends: 1771 [2022-07-12 06:38:35,021 INFO L226 Difference]: Without dead ends: 1373 [2022-07-12 06:38:35,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-12 06:38:35,023 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 452 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:35,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 2104 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:38:35,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-07-12 06:38:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1068. [2022-07-12 06:38:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 890 states have (on average 1.2876404494382023) internal successors, (1146), 899 states have internal predecessors, (1146), 118 states have call successors, (118), 59 states have call predecessors, (118), 59 states have return successors, (118), 113 states have call predecessors, (118), 118 states have call successors, (118) [2022-07-12 06:38:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1382 transitions. [2022-07-12 06:38:35,086 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1382 transitions. Word has length 292 [2022-07-12 06:38:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:35,086 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1382 transitions. [2022-07-12 06:38:35,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 states have internal predecessors, (107), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:38:35,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1382 transitions. [2022-07-12 06:38:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-12 06:38:35,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:35,089 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:35,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-12 06:38:35,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-12 06:38:35,313 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:35,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1458819667, now seen corresponding path program 1 times [2022-07-12 06:38:35,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:35,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022051045] [2022-07-12 06:38:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:35,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:38:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-12 06:38:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-12 06:38:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-12 06:38:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2022-07-12 06:38:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:35,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022051045] [2022-07-12 06:38:35,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022051045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:35,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:35,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290604900] [2022-07-12 06:38:35,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:35,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:35,454 INFO L87 Difference]: Start difference. First operand 1068 states and 1382 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:38:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:36,015 INFO L93 Difference]: Finished difference Result 1974 states and 2587 transitions. [2022-07-12 06:38:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:38:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 292 [2022-07-12 06:38:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:36,022 INFO L225 Difference]: With dead ends: 1974 [2022-07-12 06:38:36,022 INFO L226 Difference]: Without dead ends: 1280 [2022-07-12 06:38:36,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:38:36,025 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 311 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:36,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 708 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:38:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-07-12 06:38:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1141. [2022-07-12 06:38:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 945 states have (on average 1.288888888888889) internal successors, (1218), 955 states have internal predecessors, (1218), 131 states have call successors, (131), 64 states have call predecessors, (131), 64 states have return successors, (131), 125 states have call predecessors, (131), 131 states have call successors, (131) [2022-07-12 06:38:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1480 transitions. [2022-07-12 06:38:36,095 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1480 transitions. Word has length 292 [2022-07-12 06:38:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:36,095 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1480 transitions. [2022-07-12 06:38:36,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:38:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1480 transitions. [2022-07-12 06:38:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-12 06:38:36,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:36,098 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:36,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 06:38:36,098 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:36,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1982946184, now seen corresponding path program 1 times [2022-07-12 06:38:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:36,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883461653] [2022-07-12 06:38:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-12 06:38:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-12 06:38:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-12 06:38:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-12 06:38:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-12 06:38:36,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:36,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883461653] [2022-07-12 06:38:36,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883461653] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:36,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194220195] [2022-07-12 06:38:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:36,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:36,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:36,351 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:36,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 06:38:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:36,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 06:38:36,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-07-12 06:38:36,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:36,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194220195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:36,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:36,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-07-12 06:38:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780994654] [2022-07-12 06:38:36,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:36,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:38:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:36,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:38:36,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-12 06:38:36,691 INFO L87 Difference]: Start difference. First operand 1141 states and 1480 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:38:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:37,149 INFO L93 Difference]: Finished difference Result 2423 states and 3279 transitions. [2022-07-12 06:38:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:38:37,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 298 [2022-07-12 06:38:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:37,156 INFO L225 Difference]: With dead ends: 2423 [2022-07-12 06:38:37,157 INFO L226 Difference]: Without dead ends: 1630 [2022-07-12 06:38:37,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-07-12 06:38:37,159 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 485 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:37,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 2348 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:38:37,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2022-07-12 06:38:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1141. [2022-07-12 06:38:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 945 states have (on average 1.2857142857142858) internal successors, (1215), 955 states have internal predecessors, (1215), 131 states have call successors, (131), 64 states have call predecessors, (131), 64 states have return successors, (131), 125 states have call predecessors, (131), 131 states have call successors, (131) [2022-07-12 06:38:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1477 transitions. [2022-07-12 06:38:37,255 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1477 transitions. Word has length 298 [2022-07-12 06:38:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:37,255 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1477 transitions. [2022-07-12 06:38:37,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 06:38:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1477 transitions. [2022-07-12 06:38:37,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-12 06:38:37,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:37,258 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:37,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:37,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-12 06:38:37,471 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1502674486, now seen corresponding path program 1 times [2022-07-12 06:38:37,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:37,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183855929] [2022-07-12 06:38:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:37,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-12 06:38:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-12 06:38:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-12 06:38:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-12 06:38:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-12 06:38:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:37,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183855929] [2022-07-12 06:38:37,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183855929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:37,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:37,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:38:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830163801] [2022-07-12 06:38:37,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:37,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:38:37,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:38:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:38:37,602 INFO L87 Difference]: Start difference. First operand 1141 states and 1477 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:38:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:38,026 INFO L93 Difference]: Finished difference Result 2836 states and 3892 transitions. [2022-07-12 06:38:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:38:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 298 [2022-07-12 06:38:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:38,036 INFO L225 Difference]: With dead ends: 2836 [2022-07-12 06:38:38,036 INFO L226 Difference]: Without dead ends: 2069 [2022-07-12 06:38:38,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:38:38,038 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 412 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:38,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1577 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:38:38,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-07-12 06:38:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1211. [2022-07-12 06:38:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1000 states have (on average 1.294) internal successors, (1294), 1010 states have internal predecessors, (1294), 146 states have call successors, (146), 64 states have call predecessors, (146), 64 states have return successors, (146), 140 states have call predecessors, (146), 146 states have call successors, (146) [2022-07-12 06:38:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1586 transitions. [2022-07-12 06:38:38,139 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1586 transitions. Word has length 298 [2022-07-12 06:38:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:38,140 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1586 transitions. [2022-07-12 06:38:38,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 06:38:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1586 transitions. [2022-07-12 06:38:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-07-12 06:38:38,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:38,142 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:38,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 06:38:38,142 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1771224456, now seen corresponding path program 1 times [2022-07-12 06:38:38,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:38,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066734556] [2022-07-12 06:38:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-12 06:38:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-12 06:38:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-12 06:38:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-12 06:38:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-12 06:38:38,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:38,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066734556] [2022-07-12 06:38:38,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066734556] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:38,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568920404] [2022-07-12 06:38:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:38,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:38,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:38,344 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:38,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 06:38:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:38,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 06:38:38,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-12 06:38:38,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:38,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568920404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:38,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:38,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 17 [2022-07-12 06:38:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237073320] [2022-07-12 06:38:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:38,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:38:38,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:38,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:38:38,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:38:38,706 INFO L87 Difference]: Start difference. First operand 1211 states and 1586 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 06:38:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:39,775 INFO L93 Difference]: Finished difference Result 3866 states and 5297 transitions. [2022-07-12 06:38:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 06:38:39,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2022-07-12 06:38:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:39,789 INFO L225 Difference]: With dead ends: 3866 [2022-07-12 06:38:39,789 INFO L226 Difference]: Without dead ends: 3000 [2022-07-12 06:38:39,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=945, Unknown=0, NotChecked=0, Total=1122 [2022-07-12 06:38:39,792 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1333 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:39,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 4008 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 06:38:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2022-07-12 06:38:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1590. [2022-07-12 06:38:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1304 states have (on average 1.2921779141104295) internal successors, (1685), 1318 states have internal predecessors, (1685), 201 states have call successors, (201), 84 states have call predecessors, (201), 84 states have return successors, (201), 191 states have call predecessors, (201), 201 states have call successors, (201) [2022-07-12 06:38:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2087 transitions. [2022-07-12 06:38:39,927 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2087 transitions. Word has length 298 [2022-07-12 06:38:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:39,927 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2087 transitions. [2022-07-12 06:38:39,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-12 06:38:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2087 transitions. [2022-07-12 06:38:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-12 06:38:39,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:39,930 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-07-12 06:38:39,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:40,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-12 06:38:40,147 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash -973687172, now seen corresponding path program 1 times [2022-07-12 06:38:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:40,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619979274] [2022-07-12 06:38:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:40,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:38:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 06:38:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-12 06:38:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-12 06:38:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-07-12 06:38:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2022-07-12 06:38:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619979274] [2022-07-12 06:38:40,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619979274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:40,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:38:40,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:38:40,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725973022] [2022-07-12 06:38:40,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:40,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:38:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:38:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:38:40,271 INFO L87 Difference]: Start difference. First operand 1590 states and 2087 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 06:38:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:40,798 INFO L93 Difference]: Finished difference Result 2884 states and 3813 transitions. [2022-07-12 06:38:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 06:38:40,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 312 [2022-07-12 06:38:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:40,806 INFO L225 Difference]: With dead ends: 2884 [2022-07-12 06:38:40,806 INFO L226 Difference]: Without dead ends: 1668 [2022-07-12 06:38:40,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:38:40,809 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 512 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:40,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 976 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:38:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-07-12 06:38:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1393. [2022-07-12 06:38:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1151 states have (on average 1.2745438748913989) internal successors, (1467), 1159 states have internal predecessors, (1467), 171 states have call successors, (171), 70 states have call predecessors, (171), 70 states have return successors, (171), 163 states have call predecessors, (171), 171 states have call successors, (171) [2022-07-12 06:38:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1809 transitions. [2022-07-12 06:38:40,916 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1809 transitions. Word has length 312 [2022-07-12 06:38:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:40,916 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 1809 transitions. [2022-07-12 06:38:40,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 06:38:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1809 transitions. [2022-07-12 06:38:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-12 06:38:40,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:40,921 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:38:40,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 06:38:40,921 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:40,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1681987816, now seen corresponding path program 1 times [2022-07-12 06:38:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:40,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472118758] [2022-07-12 06:38:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:40,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:38:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 06:38:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-12 06:38:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-12 06:38:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-12 06:38:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-12 06:38:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-12 06:38:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-12 06:38:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-12 06:38:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-12 06:38:41,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:41,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472118758] [2022-07-12 06:38:41,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472118758] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:41,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347544468] [2022-07-12 06:38:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:41,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:41,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:41,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:41,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 06:38:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:41,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 06:38:41,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 224 proven. 81 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2022-07-12 06:38:41,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:38:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 34 proven. 77 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-12 06:38:42,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347544468] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:38:42,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:38:42,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 27 [2022-07-12 06:38:42,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128947797] [2022-07-12 06:38:42,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:38:42,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 06:38:42,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:42,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 06:38:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-07-12 06:38:42,183 INFO L87 Difference]: Start difference. First operand 1393 states and 1809 transitions. Second operand has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) [2022-07-12 06:38:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:57,185 INFO L93 Difference]: Finished difference Result 14600 states and 20639 transitions. [2022-07-12 06:38:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-07-12 06:38:57,186 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) Word has length 352 [2022-07-12 06:38:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:57,239 INFO L225 Difference]: With dead ends: 14600 [2022-07-12 06:38:57,239 INFO L226 Difference]: Without dead ends: 13512 [2022-07-12 06:38:57,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 756 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20978 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=6177, Invalid=49283, Unknown=0, NotChecked=0, Total=55460 [2022-07-12 06:38:57,258 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 9100 mSDsluCounter, 10218 mSDsCounter, 0 mSdLazyCounter, 13948 mSolverCounterSat, 4966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9100 SdHoareTripleChecker+Valid, 11044 SdHoareTripleChecker+Invalid, 18914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4966 IncrementalHoareTripleChecker+Valid, 13948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:57,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9100 Valid, 11044 Invalid, 18914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4966 Valid, 13948 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-07-12 06:38:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2022-07-12 06:38:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 6003. [2022-07-12 06:38:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 4737 states have (on average 1.2947012877348534) internal successors, (6133), 4788 states have internal predecessors, (6133), 924 states have call successors, (924), 317 states have call predecessors, (924), 341 states have return successors, (972), 897 states have call predecessors, (972), 924 states have call successors, (972) [2022-07-12 06:38:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 8029 transitions. [2022-07-12 06:38:57,957 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 8029 transitions. Word has length 352 [2022-07-12 06:38:57,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:38:57,957 INFO L495 AbstractCegarLoop]: Abstraction has 6003 states and 8029 transitions. [2022-07-12 06:38:57,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 23 states have internal predecessors, (266), 7 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 10 states have call predecessors, (51), 7 states have call successors, (51) [2022-07-12 06:38:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 8029 transitions. [2022-07-12 06:38:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-12 06:38:57,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:38:57,971 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:38:57,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 06:38:58,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-12 06:38:58,196 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:38:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:38:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1015767607, now seen corresponding path program 1 times [2022-07-12 06:38:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:38:58,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033483712] [2022-07-12 06:38:58,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:58,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:38:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:38:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:38:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:38:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:38:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:38:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:38:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:38:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:38:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:38:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:38:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:38:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:38:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:38:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:38:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:38:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:38:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:38:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:38:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:38:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:38:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:38:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 06:38:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-12 06:38:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-12 06:38:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-12 06:38:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-12 06:38:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-12 06:38:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-12 06:38:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-12 06:38:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-07-12 06:38:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:38:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033483712] [2022-07-12 06:38:58,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033483712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:38:58,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144296141] [2022-07-12 06:38:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:38:58,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:38:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:38:58,321 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:38:58,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 06:38:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:38:58,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 06:38:58,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:38:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2022-07-12 06:38:58,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:38:58,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144296141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:38:58,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:38:58,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-07-12 06:38:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208303004] [2022-07-12 06:38:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:38:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:38:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:38:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:38:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:38:58,659 INFO L87 Difference]: Start difference. First operand 6003 states and 8029 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 06:38:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:38:59,583 INFO L93 Difference]: Finished difference Result 14528 states and 19640 transitions. [2022-07-12 06:38:59,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:38:59,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 352 [2022-07-12 06:38:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:38:59,618 INFO L225 Difference]: With dead ends: 14528 [2022-07-12 06:38:59,618 INFO L226 Difference]: Without dead ends: 9050 [2022-07-12 06:38:59,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-12 06:38:59,630 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 522 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:38:59,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 2361 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:38:59,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9050 states. [2022-07-12 06:39:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9050 to 4402. [2022-07-12 06:39:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3523 states have (on average 1.2713596366732898) internal successors, (4479), 3571 states have internal predecessors, (4479), 612 states have call successors, (612), 245 states have call predecessors, (612), 266 states have return successors, (642), 585 states have call predecessors, (642), 612 states have call successors, (642) [2022-07-12 06:39:00,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5733 transitions. [2022-07-12 06:39:00,061 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5733 transitions. Word has length 352 [2022-07-12 06:39:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:00,063 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 5733 transitions. [2022-07-12 06:39:00,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 06:39:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5733 transitions. [2022-07-12 06:39:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-12 06:39:00,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:00,075 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:39:00,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 06:39:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:00,299 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1268446409, now seen corresponding path program 1 times [2022-07-12 06:39:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:00,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253654165] [2022-07-12 06:39:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:39:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:39:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:39:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:39:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:39:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:39:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:39:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:39:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:39:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:39:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:39:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:39:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:39:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:39:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:39:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:39:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:39:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:39:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:39:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:39:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 06:39:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-12 06:39:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-12 06:39:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-12 06:39:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-12 06:39:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-12 06:39:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-12 06:39:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-12 06:39:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2022-07-12 06:39:00,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:00,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253654165] [2022-07-12 06:39:00,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253654165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:00,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:39:00,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:39:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783590130] [2022-07-12 06:39:00,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:00,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:39:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:39:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:39:00,429 INFO L87 Difference]: Start difference. First operand 4402 states and 5733 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-12 06:39:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:01,153 INFO L93 Difference]: Finished difference Result 8387 states and 10967 transitions. [2022-07-12 06:39:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 06:39:01,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 352 [2022-07-12 06:39:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:01,167 INFO L225 Difference]: With dead ends: 8387 [2022-07-12 06:39:01,167 INFO L226 Difference]: Without dead ends: 4402 [2022-07-12 06:39:01,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:39:01,176 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 379 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:01,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 467 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 06:39:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2022-07-12 06:39:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4402. [2022-07-12 06:39:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3523 states have (on average 1.2702242407039455) internal successors, (4475), 3571 states have internal predecessors, (4475), 612 states have call successors, (612), 245 states have call predecessors, (612), 266 states have return successors, (642), 585 states have call predecessors, (642), 612 states have call successors, (642) [2022-07-12 06:39:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5729 transitions. [2022-07-12 06:39:01,561 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5729 transitions. Word has length 352 [2022-07-12 06:39:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:01,562 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 5729 transitions. [2022-07-12 06:39:01,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-12 06:39:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5729 transitions. [2022-07-12 06:39:01,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-12 06:39:01,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:01,571 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:39:01,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 06:39:01,571 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:01,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1009163978, now seen corresponding path program 1 times [2022-07-12 06:39:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:01,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385052342] [2022-07-12 06:39:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:01,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:39:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:39:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:39:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:39:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:39:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:39:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:39:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:39:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:39:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:39:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:39:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:39:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:39:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:39:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:39:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:39:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 06:39:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:39:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:39:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:39:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 06:39:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-12 06:39:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-12 06:39:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-12 06:39:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-12 06:39:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-12 06:39:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-12 06:39:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-12 06:39:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2022-07-12 06:39:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:01,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385052342] [2022-07-12 06:39:01,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385052342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:01,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:39:01,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:39:01,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338393780] [2022-07-12 06:39:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:01,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:39:01,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:39:01,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:39:01,678 INFO L87 Difference]: Start difference. First operand 4402 states and 5729 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 06:39:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:02,597 INFO L93 Difference]: Finished difference Result 12263 states and 16036 transitions. [2022-07-12 06:39:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:39:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2022-07-12 06:39:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:02,622 INFO L225 Difference]: With dead ends: 12263 [2022-07-12 06:39:02,622 INFO L226 Difference]: Without dead ends: 8320 [2022-07-12 06:39:02,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:39:02,633 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 216 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:02,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 648 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:39:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8320 states. [2022-07-12 06:39:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8320 to 4653. [2022-07-12 06:39:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 3774 states have (on average 1.2652358240593535) internal successors, (4775), 3822 states have internal predecessors, (4775), 612 states have call successors, (612), 245 states have call predecessors, (612), 266 states have return successors, (642), 585 states have call predecessors, (642), 612 states have call successors, (642) [2022-07-12 06:39:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 6029 transitions. [2022-07-12 06:39:03,080 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 6029 transitions. Word has length 352 [2022-07-12 06:39:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:03,081 INFO L495 AbstractCegarLoop]: Abstraction has 4653 states and 6029 transitions. [2022-07-12 06:39:03,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 06:39:03,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 6029 transitions. [2022-07-12 06:39:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-12 06:39:03,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:03,090 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:39:03,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 06:39:03,091 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:03,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash -712838708, now seen corresponding path program 1 times [2022-07-12 06:39:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:03,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803065548] [2022-07-12 06:39:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:03,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:39:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:39:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:39:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:39:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:39:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:39:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:39:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:39:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:39:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:39:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:39:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:39:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:39:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:39:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:39:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:39:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 06:39:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:39:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:39:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-07-12 06:39:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 06:39:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-12 06:39:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-07-12 06:39:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-12 06:39:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-07-12 06:39:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-12 06:39:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-12 06:39:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-12 06:39:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2022-07-12 06:39:03,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:03,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803065548] [2022-07-12 06:39:03,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803065548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:03,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:39:03,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:39:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651344524] [2022-07-12 06:39:03,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:39:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:03,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:39:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:39:03,208 INFO L87 Difference]: Start difference. First operand 4653 states and 6029 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 06:39:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:03,764 INFO L93 Difference]: Finished difference Result 8842 states and 11502 transitions. [2022-07-12 06:39:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:39:03,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2022-07-12 06:39:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:03,777 INFO L225 Difference]: With dead ends: 8842 [2022-07-12 06:39:03,777 INFO L226 Difference]: Without dead ends: 4512 [2022-07-12 06:39:03,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:39:03,789 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 54 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:03,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 551 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:39:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2022-07-12 06:39:04,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4512. [2022-07-12 06:39:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 3633 states have (on average 1.2614918799889898) internal successors, (4583), 3681 states have internal predecessors, (4583), 612 states have call successors, (612), 245 states have call predecessors, (612), 266 states have return successors, (642), 585 states have call predecessors, (642), 612 states have call successors, (642) [2022-07-12 06:39:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 5837 transitions. [2022-07-12 06:39:04,301 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 5837 transitions. Word has length 352 [2022-07-12 06:39:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:04,302 INFO L495 AbstractCegarLoop]: Abstraction has 4512 states and 5837 transitions. [2022-07-12 06:39:04,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 06:39:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 5837 transitions. [2022-07-12 06:39:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-12 06:39:04,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:04,310 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:39:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-12 06:39:04,311 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1863458373, now seen corresponding path program 1 times [2022-07-12 06:39:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:04,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575928984] [2022-07-12 06:39:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:39:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:39:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:39:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:39:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:39:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:39:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:39:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:39:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:39:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:39:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:39:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:39:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:39:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:39:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:39:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 06:39:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 06:39:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-12 06:39:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-12 06:39:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-12 06:39:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-12 06:39:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-12 06:39:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-12 06:39:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-12 06:39:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-12 06:39:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-12 06:39:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-12 06:39:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-12 06:39:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-07-12 06:39:04,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:04,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575928984] [2022-07-12 06:39:04,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575928984] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:39:04,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139352956] [2022-07-12 06:39:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:04,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:04,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:39:04,448 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:39:04,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 06:39:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:04,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:39:04,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:39:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-07-12 06:39:04,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:39:04,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139352956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:39:04,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:39:04,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 06:39:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702703550] [2022-07-12 06:39:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:39:04,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:39:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:39:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:39:04,679 INFO L87 Difference]: Start difference. First operand 4512 states and 5837 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 06:39:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:05,048 INFO L93 Difference]: Finished difference Result 9197 states and 11893 transitions. [2022-07-12 06:39:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:39:05,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 353 [2022-07-12 06:39:05,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:05,061 INFO L225 Difference]: With dead ends: 9197 [2022-07-12 06:39:05,061 INFO L226 Difference]: Without dead ends: 4452 [2022-07-12 06:39:05,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:39:05,069 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 40 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:05,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 672 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:39:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4452 states. [2022-07-12 06:39:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4452 to 4452. [2022-07-12 06:39:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 3594 states have (on average 1.2276015581524764) internal successors, (4412), 3630 states have internal predecessors, (4412), 612 states have call successors, (612), 245 states have call predecessors, (612), 245 states have return successors, (612), 576 states have call predecessors, (612), 612 states have call successors, (612) [2022-07-12 06:39:05,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 5636 transitions. [2022-07-12 06:39:05,543 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 5636 transitions. Word has length 353 [2022-07-12 06:39:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:05,543 INFO L495 AbstractCegarLoop]: Abstraction has 4452 states and 5636 transitions. [2022-07-12 06:39:05,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 06:39:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 5636 transitions. [2022-07-12 06:39:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-07-12 06:39:05,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:05,551 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:39:05,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-12 06:39:05,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:05,776 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:05,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash -755096139, now seen corresponding path program 1 times [2022-07-12 06:39:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:05,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959252667] [2022-07-12 06:39:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:39:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:39:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:39:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:39:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:39:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:39:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:39:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:39:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:39:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:39:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:39:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:39:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:39:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:05,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:39:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:39:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:39:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:39:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-12 06:39:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-12 06:39:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-12 06:39:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-12 06:39:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-12 06:39:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-12 06:39:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-12 06:39:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-12 06:39:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-12 06:39:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-12 06:39:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-12 06:39:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-12 06:39:06,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:06,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959252667] [2022-07-12 06:39:06,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959252667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:39:06,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180101750] [2022-07-12 06:39:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:06,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:06,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:39:06,043 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:39:06,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 06:39:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:06,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 06:39:06,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:39:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 190 proven. 105 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2022-07-12 06:39:06,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:39:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 33 proven. 72 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-07-12 06:39:07,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180101750] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:39:07,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:39:07,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2022-07-12 06:39:07,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022336127] [2022-07-12 06:39:07,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:39:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 06:39:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 06:39:07,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2022-07-12 06:39:07,191 INFO L87 Difference]: Start difference. First operand 4452 states and 5636 transitions. Second operand has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-12 06:39:42,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:39:42,084 INFO L93 Difference]: Finished difference Result 24395 states and 32063 transitions. [2022-07-12 06:39:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 509 states. [2022-07-12 06:39:42,085 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) Word has length 353 [2022-07-12 06:39:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:39:42,133 INFO L225 Difference]: With dead ends: 24395 [2022-07-12 06:39:42,134 INFO L226 Difference]: Without dead ends: 20475 [2022-07-12 06:39:42,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 770 SyntacticMatches, 1 SemanticMatches, 534 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124605 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=21449, Invalid=265311, Unknown=0, NotChecked=0, Total=286760 [2022-07-12 06:39:42,169 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 5772 mSDsluCounter, 19820 mSDsCounter, 0 mSdLazyCounter, 24596 mSolverCounterSat, 5966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5772 SdHoareTripleChecker+Valid, 21562 SdHoareTripleChecker+Invalid, 30562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5966 IncrementalHoareTripleChecker+Valid, 24596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:39:42,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5772 Valid, 21562 Invalid, 30562 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5966 Valid, 24596 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2022-07-12 06:39:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20475 states. [2022-07-12 06:39:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20475 to 7771. [2022-07-12 06:39:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7771 states, 6275 states have (on average 1.2302788844621515) internal successors, (7720), 6340 states have internal predecessors, (7720), 1061 states have call successors, (1061), 434 states have call predecessors, (1061), 434 states have return successors, (1061), 996 states have call predecessors, (1061), 1061 states have call successors, (1061) [2022-07-12 06:39:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7771 states to 7771 states and 9842 transitions. [2022-07-12 06:39:43,193 INFO L78 Accepts]: Start accepts. Automaton has 7771 states and 9842 transitions. Word has length 353 [2022-07-12 06:39:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:39:43,193 INFO L495 AbstractCegarLoop]: Abstraction has 7771 states and 9842 transitions. [2022-07-12 06:39:43,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.033333333333333) internal successors, (271), 26 states have internal predecessors, (271), 8 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 11 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-12 06:39:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7771 states and 9842 transitions. [2022-07-12 06:39:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-07-12 06:39:43,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:39:43,208 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:39:43,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 06:39:43,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:43,429 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:39:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:39:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2074094901, now seen corresponding path program 1 times [2022-07-12 06:39:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:39:43,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843122836] [2022-07-12 06:39:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:39:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:39:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:39:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:39:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:39:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:39:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:39:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:39:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:39:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:39:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:39:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:39:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:39:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:39:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:39:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:39:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:39:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 06:39:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 06:39:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-12 06:39:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-12 06:39:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-12 06:39:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-07-12 06:39:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-12 06:39:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-12 06:39:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-07-12 06:39:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2022-07-12 06:39:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-07-12 06:39:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-12 06:39:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-07-12 06:39:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-07-12 06:39:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2022-07-12 06:39:43,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:39:43,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843122836] [2022-07-12 06:39:43,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843122836] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:39:43,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619527177] [2022-07-12 06:39:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:39:43,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:39:43,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:39:43,632 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:39:43,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 06:39:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:39:43,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-12 06:39:43,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:39:44,196 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 328 proven. 118 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-07-12 06:39:44,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:39:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 51 proven. 204 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-12 06:39:44,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619527177] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:39:44,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:39:44,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 19] total 35 [2022-07-12 06:39:44,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564863284] [2022-07-12 06:39:44,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:39:44,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-12 06:39:44,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:39:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-12 06:39:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 06:39:44,828 INFO L87 Difference]: Start difference. First operand 7771 states and 9842 transitions. Second operand has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) [2022-07-12 06:40:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:02,136 INFO L93 Difference]: Finished difference Result 48206 states and 66977 transitions. [2022-07-12 06:40:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-07-12 06:40:02,136 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) Word has length 363 [2022-07-12 06:40:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:02,253 INFO L225 Difference]: With dead ends: 48206 [2022-07-12 06:40:02,253 INFO L226 Difference]: Without dead ends: 41046 [2022-07-12 06:40:02,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15097 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3227, Invalid=38185, Unknown=0, NotChecked=0, Total=41412 [2022-07-12 06:40:02,283 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 3970 mSDsluCounter, 17472 mSDsCounter, 0 mSdLazyCounter, 17550 mSolverCounterSat, 1900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3996 SdHoareTripleChecker+Valid, 18569 SdHoareTripleChecker+Invalid, 19450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1900 IncrementalHoareTripleChecker+Valid, 17550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:02,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3996 Valid, 18569 Invalid, 19450 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1900 Valid, 17550 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-12 06:40:02,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41046 states. [2022-07-12 06:40:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41046 to 8231. [2022-07-12 06:40:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 6681 states have (on average 1.2263134261338122) internal successors, (8193), 6746 states have internal predecessors, (8193), 1090 states have call successors, (1090), 457 states have call predecessors, (1090), 459 states have return successors, (1094), 1027 states have call predecessors, (1094), 1090 states have call successors, (1094) [2022-07-12 06:40:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 10377 transitions. [2022-07-12 06:40:03,861 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 10377 transitions. Word has length 363 [2022-07-12 06:40:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:03,862 INFO L495 AbstractCegarLoop]: Abstraction has 8231 states and 10377 transitions. [2022-07-12 06:40:03,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 8.941176470588236) internal successors, (304), 30 states have internal predecessors, (304), 10 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (62), 12 states have call predecessors, (62), 9 states have call successors, (62) [2022-07-12 06:40:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 10377 transitions. [2022-07-12 06:40:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-07-12 06:40:03,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:03,877 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:40:03,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-12 06:40:04,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:04,102 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1392154793, now seen corresponding path program 1 times [2022-07-12 06:40:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:04,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788934580] [2022-07-12 06:40:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:04,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:40:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:40:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:40:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 06:40:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:40:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:40:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:40:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:40:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:40:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:40:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:40:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 06:40:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:40:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:40:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 06:40:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-12 06:40:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-12 06:40:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-12 06:40:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-12 06:40:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-12 06:40:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-12 06:40:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-12 06:40:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-12 06:40:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-12 06:40:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-12 06:40:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-07-12 06:40:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-12 06:40:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-12 06:40:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-12 06:40:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-07-12 06:40:04,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:04,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788934580] [2022-07-12 06:40:04,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788934580] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:04,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016149476] [2022-07-12 06:40:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:04,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:04,206 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:04,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 06:40:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:04,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:40:04,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2022-07-12 06:40:04,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:40:04,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016149476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:40:04,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:40:04,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-12 06:40:04,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710303957] [2022-07-12 06:40:04,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:40:04,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:40:04,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:04,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:40:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:40:04,675 INFO L87 Difference]: Start difference. First operand 8231 states and 10377 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 06:40:05,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:05,718 INFO L93 Difference]: Finished difference Result 15601 states and 19756 transitions. [2022-07-12 06:40:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:40:05,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 366 [2022-07-12 06:40:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:05,738 INFO L225 Difference]: With dead ends: 15601 [2022-07-12 06:40:05,738 INFO L226 Difference]: Without dead ends: 8259 [2022-07-12 06:40:05,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:40:05,748 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 287 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:05,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 520 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:40:05,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2022-07-12 06:40:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8231. [2022-07-12 06:40:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 6681 states have (on average 1.2252656787906002) internal successors, (8186), 6746 states have internal predecessors, (8186), 1090 states have call successors, (1090), 457 states have call predecessors, (1090), 459 states have return successors, (1094), 1027 states have call predecessors, (1094), 1090 states have call successors, (1094) [2022-07-12 06:40:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 10370 transitions. [2022-07-12 06:40:06,817 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 10370 transitions. Word has length 366 [2022-07-12 06:40:06,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:06,817 INFO L495 AbstractCegarLoop]: Abstraction has 8231 states and 10370 transitions. [2022-07-12 06:40:06,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 06:40:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 10370 transitions. [2022-07-12 06:40:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-07-12 06:40:06,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:06,829 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1] [2022-07-12 06:40:06,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 06:40:07,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:07,030 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1571060290, now seen corresponding path program 1 times [2022-07-12 06:40:07,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:07,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717418135] [2022-07-12 06:40:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:07,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:40:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:40:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:40:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 06:40:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:40:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:40:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:40:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:40:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:40:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:40:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:40:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 06:40:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:40:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:40:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 06:40:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-12 06:40:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-12 06:40:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-12 06:40:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-12 06:40:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-12 06:40:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-12 06:40:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-12 06:40:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-12 06:40:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-12 06:40:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-12 06:40:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-07-12 06:40:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-07-12 06:40:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-12 06:40:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-07-12 06:40:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2022-07-12 06:40:07,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:07,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717418135] [2022-07-12 06:40:07,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717418135] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:07,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523403931] [2022-07-12 06:40:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:07,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:07,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:07,133 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:07,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 06:40:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:07,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:40:07,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-12 06:40:07,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:40:07,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523403931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:40:07,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:40:07,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-07-12 06:40:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271156217] [2022-07-12 06:40:07,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:40:07,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:40:07,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:40:07,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:40:07,613 INFO L87 Difference]: Start difference. First operand 8231 states and 10370 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 06:40:08,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:08,751 INFO L93 Difference]: Finished difference Result 15750 states and 19920 transitions. [2022-07-12 06:40:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:40:08,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 366 [2022-07-12 06:40:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:08,773 INFO L225 Difference]: With dead ends: 15750 [2022-07-12 06:40:08,773 INFO L226 Difference]: Without dead ends: 8294 [2022-07-12 06:40:08,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:40:08,787 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 305 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:08,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 428 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:40:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2022-07-12 06:40:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 8273. [2022-07-12 06:40:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8273 states, 6723 states have (on average 1.2217759928603302) internal successors, (8214), 6788 states have internal predecessors, (8214), 1090 states have call successors, (1090), 457 states have call predecessors, (1090), 459 states have return successors, (1094), 1027 states have call predecessors, (1094), 1090 states have call successors, (1094) [2022-07-12 06:40:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8273 states to 8273 states and 10398 transitions. [2022-07-12 06:40:09,752 INFO L78 Accepts]: Start accepts. Automaton has 8273 states and 10398 transitions. Word has length 366 [2022-07-12 06:40:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:09,753 INFO L495 AbstractCegarLoop]: Abstraction has 8273 states and 10398 transitions. [2022-07-12 06:40:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 06:40:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8273 states and 10398 transitions. [2022-07-12 06:40:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-07-12 06:40:09,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:09,765 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:40:09,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-12 06:40:09,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:09,966 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:09,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2036819598, now seen corresponding path program 1 times [2022-07-12 06:40:09,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:09,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762174783] [2022-07-12 06:40:09,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:40:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:40:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:40:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 06:40:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 06:40:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:40:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:40:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:40:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:40:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:40:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:40:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 06:40:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:40:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:40:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-12 06:40:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-12 06:40:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-12 06:40:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-12 06:40:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-12 06:40:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-12 06:40:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-12 06:40:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-12 06:40:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-12 06:40:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-07-12 06:40:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-07-12 06:40:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-12 06:40:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-07-12 06:40:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-07-12 06:40:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-12 06:40:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-07-12 06:40:10,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:10,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762174783] [2022-07-12 06:40:10,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762174783] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:10,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110190349] [2022-07-12 06:40:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:10,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:10,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:10,060 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:10,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 06:40:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:10,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 06:40:10,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-07-12 06:40:10,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:40:10,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110190349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:40:10,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:40:10,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 06:40:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106227309] [2022-07-12 06:40:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:40:10,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:40:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:40:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:40:10,333 INFO L87 Difference]: Start difference. First operand 8273 states and 10398 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 06:40:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:11,191 INFO L93 Difference]: Finished difference Result 16093 states and 20276 transitions. [2022-07-12 06:40:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:40:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 367 [2022-07-12 06:40:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:11,209 INFO L225 Difference]: With dead ends: 16093 [2022-07-12 06:40:11,209 INFO L226 Difference]: Without dead ends: 7821 [2022-07-12 06:40:11,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:40:11,220 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 28 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:11,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 679 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:40:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7821 states. [2022-07-12 06:40:12,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7821 to 7821. [2022-07-12 06:40:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7821 states, 6324 states have (on average 1.2253320683111955) internal successors, (7749), 6389 states have internal predecessors, (7749), 1061 states have call successors, (1061), 435 states have call predecessors, (1061), 435 states have return successors, (1061), 996 states have call predecessors, (1061), 1061 states have call successors, (1061) [2022-07-12 06:40:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7821 states to 7821 states and 9871 transitions. [2022-07-12 06:40:12,145 INFO L78 Accepts]: Start accepts. Automaton has 7821 states and 9871 transitions. Word has length 367 [2022-07-12 06:40:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:12,145 INFO L495 AbstractCegarLoop]: Abstraction has 7821 states and 9871 transitions. [2022-07-12 06:40:12,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 06:40:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7821 states and 9871 transitions. [2022-07-12 06:40:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-07-12 06:40:12,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:12,154 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:40:12,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-12 06:40:12,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-07-12 06:40:12,363 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:12,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2067520339, now seen corresponding path program 1 times [2022-07-12 06:40:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:12,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894324748] [2022-07-12 06:40:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:40:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:40:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:40:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:40:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:40:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:40:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:40:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:40:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:40:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:40:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:40:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:40:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:40:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:40:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:40:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 06:40:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-12 06:40:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-12 06:40:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-07-12 06:40:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-12 06:40:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-12 06:40:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-12 06:40:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-07-12 06:40:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-07-12 06:40:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2022-07-12 06:40:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-12 06:40:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-12 06:40:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-12 06:40:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-12 06:40:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-12 06:40:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2022-07-12 06:40:12,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:12,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894324748] [2022-07-12 06:40:12,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894324748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:40:12,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:40:12,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 06:40:12,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771412343] [2022-07-12 06:40:12,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:40:12,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:40:12,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:12,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:40:12,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:40:12,525 INFO L87 Difference]: Start difference. First operand 7821 states and 9871 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 8 states have internal predecessors, (124), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 06:40:15,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:15,599 INFO L93 Difference]: Finished difference Result 20706 states and 26884 transitions. [2022-07-12 06:40:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 06:40:15,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 8 states have internal predecessors, (124), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 374 [2022-07-12 06:40:15,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:15,624 INFO L225 Difference]: With dead ends: 20706 [2022-07-12 06:40:15,624 INFO L226 Difference]: Without dead ends: 13626 [2022-07-12 06:40:15,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 06:40:15,636 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 706 mSDsluCounter, 2373 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:15,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 2955 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:40:15,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13626 states. [2022-07-12 06:40:16,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13626 to 6346. [2022-07-12 06:40:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6346 states, 5219 states have (on average 1.2165165740563326) internal successors, (6349), 5264 states have internal predecessors, (6349), 781 states have call successors, (781), 345 states have call predecessors, (781), 345 states have return successors, (781), 736 states have call predecessors, (781), 781 states have call successors, (781) [2022-07-12 06:40:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 7911 transitions. [2022-07-12 06:40:16,619 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 7911 transitions. Word has length 374 [2022-07-12 06:40:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:16,620 INFO L495 AbstractCegarLoop]: Abstraction has 6346 states and 7911 transitions. [2022-07-12 06:40:16,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 8 states have internal predecessors, (124), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 06:40:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 7911 transitions. [2022-07-12 06:40:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-07-12 06:40:16,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:16,632 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:40:16,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-12 06:40:16,632 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:16,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1214762829, now seen corresponding path program 1 times [2022-07-12 06:40:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:16,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385925191] [2022-07-12 06:40:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:16,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:40:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:40:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:40:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:40:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:40:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:40:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:40:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:40:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:40:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:40:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:40:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:40:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:40:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:40:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:40:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-12 06:40:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 06:40:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-12 06:40:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 06:40:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-12 06:40:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-12 06:40:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-12 06:40:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-07-12 06:40:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-12 06:40:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-12 06:40:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-12 06:40:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-12 06:40:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2022-07-12 06:40:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-07-12 06:40:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-12 06:40:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-07-12 06:40:16,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:16,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385925191] [2022-07-12 06:40:16,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385925191] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:16,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962475987] [2022-07-12 06:40:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:16,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:16,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:16,831 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:16,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 06:40:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:17,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-12 06:40:17,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 457 proven. 205 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-07-12 06:40:17,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:40:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 113 proven. 189 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-07-12 06:40:18,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962475987] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:40:18,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:40:18,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 21] total 50 [2022-07-12 06:40:18,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257974416] [2022-07-12 06:40:18,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:40:18,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-12 06:40:18,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-12 06:40:18,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2248, Unknown=0, NotChecked=0, Total=2450 [2022-07-12 06:40:18,917 INFO L87 Difference]: Start difference. First operand 6346 states and 7911 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) [2022-07-12 06:40:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:33,717 INFO L93 Difference]: Finished difference Result 24351 states and 31886 transitions. [2022-07-12 06:40:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-07-12 06:40:33,718 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) Word has length 374 [2022-07-12 06:40:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:33,763 INFO L225 Difference]: With dead ends: 24351 [2022-07-12 06:40:33,763 INFO L226 Difference]: Without dead ends: 18626 [2022-07-12 06:40:33,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11286 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2787, Invalid=32745, Unknown=0, NotChecked=0, Total=35532 [2022-07-12 06:40:33,778 INFO L413 NwaCegarLoop]: 1132 mSDtfsCounter, 3027 mSDsluCounter, 21690 mSDsCounter, 0 mSdLazyCounter, 16346 mSolverCounterSat, 1385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 22822 SdHoareTripleChecker+Invalid, 17731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1385 IncrementalHoareTripleChecker+Valid, 16346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:33,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 22822 Invalid, 17731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1385 Valid, 16346 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-07-12 06:40:33,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18626 states. [2022-07-12 06:40:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18626 to 6340. [2022-07-12 06:40:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6340 states, 5212 states have (on average 1.2158480429777436) internal successors, (6337), 5257 states have internal predecessors, (6337), 781 states have call successors, (781), 346 states have call predecessors, (781), 346 states have return successors, (781), 736 states have call predecessors, (781), 781 states have call successors, (781) [2022-07-12 06:40:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 7899 transitions. [2022-07-12 06:40:34,789 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 7899 transitions. Word has length 374 [2022-07-12 06:40:34,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:34,790 INFO L495 AbstractCegarLoop]: Abstraction has 6340 states and 7899 transitions. [2022-07-12 06:40:34,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 43 states have internal predecessors, (382), 16 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (66), 19 states have call predecessors, (66), 16 states have call successors, (66) [2022-07-12 06:40:34,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 7899 transitions. [2022-07-12 06:40:34,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-12 06:40:34,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:34,799 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-12 06:40:34,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 06:40:35,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-12 06:40:35,006 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:35,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:35,006 INFO L85 PathProgramCache]: Analyzing trace with hash 72638392, now seen corresponding path program 1 times [2022-07-12 06:40:35,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:35,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763086898] [2022-07-12 06:40:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:35,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:40:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:40:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:40:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:40:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:40:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:40:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:40:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:40:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:40:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:40:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:40:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:40:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:40:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:40:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:40:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-12 06:40:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-12 06:40:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-12 06:40:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 06:40:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-12 06:40:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-12 06:40:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-12 06:40:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-12 06:40:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-12 06:40:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-12 06:40:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-12 06:40:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-12 06:40:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-12 06:40:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-07-12 06:40:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-07-12 06:40:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2022-07-12 06:40:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2022-07-12 06:40:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:35,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763086898] [2022-07-12 06:40:35,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763086898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:40:35,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:40:35,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:40:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149648122] [2022-07-12 06:40:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:40:35,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:40:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:40:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:40:35,125 INFO L87 Difference]: Start difference. First operand 6340 states and 7899 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 06:40:35,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:35,730 INFO L93 Difference]: Finished difference Result 9264 states and 11551 transitions. [2022-07-12 06:40:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:40:35,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 385 [2022-07-12 06:40:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:35,741 INFO L225 Difference]: With dead ends: 9264 [2022-07-12 06:40:35,741 INFO L226 Difference]: Without dead ends: 3460 [2022-07-12 06:40:35,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:40:35,749 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 51 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:35,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 542 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:40:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-07-12 06:40:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3460. [2022-07-12 06:40:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 2860 states have (on average 1.201048951048951) internal successors, (3435), 2884 states have internal predecessors, (3435), 413 states have call successors, (413), 186 states have call predecessors, (413), 186 states have return successors, (413), 389 states have call predecessors, (413), 413 states have call successors, (413) [2022-07-12 06:40:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 4261 transitions. [2022-07-12 06:40:36,305 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 4261 transitions. Word has length 385 [2022-07-12 06:40:36,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:36,306 INFO L495 AbstractCegarLoop]: Abstraction has 3460 states and 4261 transitions. [2022-07-12 06:40:36,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 06:40:36,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 4261 transitions. [2022-07-12 06:40:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-12 06:40:36,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:36,344 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:40:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-12 06:40:36,353 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1127420960, now seen corresponding path program 1 times [2022-07-12 06:40:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:36,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335742709] [2022-07-12 06:40:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:40:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:40:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:40:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:40:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:40:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:40:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:40:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:40:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:40:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:40:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:40:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:40:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:40:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:40:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:40:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:40:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-12 06:40:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-12 06:40:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 06:40:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-12 06:40:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-12 06:40:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-12 06:40:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-12 06:40:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-12 06:40:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-12 06:40:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-12 06:40:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2022-07-12 06:40:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-07-12 06:40:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2022-07-12 06:40:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-12 06:40:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-12 06:40:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 52 proven. 52 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2022-07-12 06:40:36,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:36,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335742709] [2022-07-12 06:40:36,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335742709] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:36,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371202520] [2022-07-12 06:40:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:36,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:36,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:36,687 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:36,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 06:40:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:36,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-12 06:40:36,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:40:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 550 proven. 249 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-12 06:40:37,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:40:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 158 proven. 154 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-12 06:40:39,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371202520] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:40:39,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:40:39,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 21] total 56 [2022-07-12 06:40:39,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316834730] [2022-07-12 06:40:39,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:40:39,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-12 06:40:39,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:40:39,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-12 06:40:39,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2859, Unknown=0, NotChecked=0, Total=3080 [2022-07-12 06:40:39,410 INFO L87 Difference]: Start difference. First operand 3460 states and 4261 transitions. Second operand has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) [2022-07-12 06:40:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:40:57,614 INFO L93 Difference]: Finished difference Result 23214 states and 30444 transitions. [2022-07-12 06:40:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-07-12 06:40:57,615 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) Word has length 385 [2022-07-12 06:40:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:40:57,655 INFO L225 Difference]: With dead ends: 23214 [2022-07-12 06:40:57,655 INFO L226 Difference]: Without dead ends: 20221 [2022-07-12 06:40:57,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 828 SyntacticMatches, 3 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13429 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2847, Invalid=38973, Unknown=0, NotChecked=0, Total=41820 [2022-07-12 06:40:57,667 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 4288 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 15011 mSolverCounterSat, 1841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 17904 SdHoareTripleChecker+Invalid, 17313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1841 IncrementalHoareTripleChecker+Valid, 15011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 461 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:40:57,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4315 Valid, 17904 Invalid, 17313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1841 Valid, 15011 Invalid, 0 Unknown, 461 Unchecked, 8.4s Time] [2022-07-12 06:40:57,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20221 states. [2022-07-12 06:40:58,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20221 to 4717. [2022-07-12 06:40:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 3842 states have (on average 1.2040603852160334) internal successors, (4626), 3878 states have internal predecessors, (4626), 611 states have call successors, (611), 263 states have call predecessors, (611), 263 states have return successors, (611), 575 states have call predecessors, (611), 611 states have call successors, (611) [2022-07-12 06:40:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 5848 transitions. [2022-07-12 06:40:58,639 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 5848 transitions. Word has length 385 [2022-07-12 06:40:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:40:58,639 INFO L495 AbstractCegarLoop]: Abstraction has 4717 states and 5848 transitions. [2022-07-12 06:40:58,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.696428571428571) internal successors, (431), 47 states have internal predecessors, (431), 16 states have call successors, (69), 11 states have call predecessors, (69), 24 states have return successors, (74), 24 states have call predecessors, (74), 16 states have call successors, (74) [2022-07-12 06:40:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 5848 transitions. [2022-07-12 06:40:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-07-12 06:40:58,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:40:58,649 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:40:58,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 06:40:58,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:58,864 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:40:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:40:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash -453380509, now seen corresponding path program 1 times [2022-07-12 06:40:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:40:58,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522407800] [2022-07-12 06:40:58,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:58,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:40:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 06:40:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:40:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:40:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:40:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 06:40:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 06:40:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 06:40:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:40:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:40:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-12 06:40:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:40:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-12 06:40:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:40:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:40:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 06:40:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-12 06:40:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-12 06:40:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 06:40:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-12 06:40:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-12 06:40:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-12 06:40:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-12 06:40:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-07-12 06:40:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-07-12 06:40:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-12 06:40:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-12 06:40:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-12 06:40:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-12 06:40:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-07-12 06:40:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-12 06:40:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2022-07-12 06:40:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-07-12 06:40:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2022-07-12 06:40:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-12 06:40:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-07-12 06:40:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 34 proven. 28 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2022-07-12 06:40:59,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:40:59,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522407800] [2022-07-12 06:40:59,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522407800] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:40:59,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621418549] [2022-07-12 06:40:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:40:59,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:40:59,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:40:59,268 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:40:59,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 06:40:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:40:59,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 06:40:59,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:41:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 512 proven. 23 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-07-12 06:41:00,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:41:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-07-12 06:41:00,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621418549] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:41:00,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:41:00,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 9] total 35 [2022-07-12 06:41:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727151490] [2022-07-12 06:41:00,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:41:00,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-12 06:41:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:41:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-12 06:41:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 06:41:00,425 INFO L87 Difference]: Start difference. First operand 4717 states and 5848 transitions. Second operand has 35 states, 35 states have (on average 11.2) internal successors, (392), 32 states have internal predecessors, (392), 14 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (75), 16 states have call predecessors, (75), 14 states have call successors, (75)