./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/combinations/Problem05_label48+token_ring.02.cil-1.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 abf153d7504404447837d5448d411c139d9bf5ab64e9e6700e63ddfa19d4209f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:05:58,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:05:58,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:05:58,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:05:58,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:05:58,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:05:58,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:05:58,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:05:58,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:05:58,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:05:58,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:05:58,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:05:58,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:05:58,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:05:58,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:05:58,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:05:58,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:05:58,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:05:58,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:05:58,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:05:58,637 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:05:58,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:05:58,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:05:58,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:05:58,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:05:58,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:05:58,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:05:58,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:05:58,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:05:58,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:05:58,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:05:58,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:05:58,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:05:58,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:05:58,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:05:58,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:05:58,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:05:58,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:05:58,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:05:58,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:05:58,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:05:58,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:05:58,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:05:58,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:05:58,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:05:58,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:05:58,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:05:58,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:05:58,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:05:58,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:05:58,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:05:58,673 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:05:58,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:05:58,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:05:58,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:05:58,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:05:58,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:05:58,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:05:58,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:05:58,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:05:58,675 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:05:58,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:05:58,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:05:58,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:05:58,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:05:58,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:05:58,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:05:58,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:05:58,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:05:58,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:05:58,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:05:58,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:05:58,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:05:58,678 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:05:58,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:05:58,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:05:58,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abf153d7504404447837d5448d411c139d9bf5ab64e9e6700e63ddfa19d4209f [2022-07-13 20:05:58,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:05:58,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:05:58,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:05:58,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:05:58,891 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:05:58,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c [2022-07-13 20:05:58,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc6fce1/3bcb998a6cf54e849cd4ddf03d8e0395/FLAGe600827fd [2022-07-13 20:05:59,581 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:05:59,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.02.cil-1.c [2022-07-13 20:05:59,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc6fce1/3bcb998a6cf54e849cd4ddf03d8e0395/FLAGe600827fd [2022-07-13 20:05:59,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fdc6fce1/3bcb998a6cf54e849cd4ddf03d8e0395 [2022-07-13 20:05:59,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:05:59,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:05:59,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:05:59,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:05:59,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:05:59,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:05:59" (1/1) ... [2022-07-13 20:05:59,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98ebf23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:05:59, skipping insertion in model container [2022-07-13 20:05:59,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:05:59" (1/1) ... [2022-07-13 20:05:59,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:06:00,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:06:01,208 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/combinations/Problem05_label48+token_ring.02.cil-1.c[375709,375722] [2022-07-13 20:06:01,232 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/combinations/Problem05_label48+token_ring.02.cil-1.c[383339,383352] [2022-07-13 20:06:01,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:06:01,332 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:06:01,943 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/combinations/Problem05_label48+token_ring.02.cil-1.c[375709,375722] [2022-07-13 20:06:01,951 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/combinations/Problem05_label48+token_ring.02.cil-1.c[383339,383352] [2022-07-13 20:06:01,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:06:02,008 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:06:02,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02 WrapperNode [2022-07-13 20:06:02,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:06:02,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:06:02,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:06:02,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:06:02,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,368 INFO L137 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2022-07-13 20:06:02,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:06:02,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:06:02,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:06:02,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:06:02,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:06:02,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:06:02,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:06:02,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:06:02,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (1/1) ... [2022-07-13 20:06:02,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:06:02,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:02,748 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) [2022-07-13 20:06:02,784 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 [2022-07-13 20:06:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:06:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:06:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:06:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:06:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:06:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:06:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:06:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:06:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:06:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:06:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:06:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:06:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:06:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:06:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:06:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:06:02,927 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:06:02,929 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:06:07,722 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:06:07,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:06:07,746 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 20:06:07,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:06:07 BoogieIcfgContainer [2022-07-13 20:06:07,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:06:07,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:06:07,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:06:07,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:06:07,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:05:59" (1/3) ... [2022-07-13 20:06:07,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5082716a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:06:07, skipping insertion in model container [2022-07-13 20:06:07,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:06:02" (2/3) ... [2022-07-13 20:06:07,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5082716a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:06:07, skipping insertion in model container [2022-07-13 20:06:07,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:06:07" (3/3) ... [2022-07-13 20:06:07,754 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.02.cil-1.c [2022-07-13 20:06:07,763 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:06:07,763 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:06:07,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:06:07,858 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@5812cd0d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@554f0a4 [2022-07-13 20:06:07,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:06:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 20:06:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:06:07,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:07,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:07,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:07,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2022-07-13 20:06:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:07,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143575770] [2022-07-13 20:06:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:07,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:08,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:08,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:08,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143575770] [2022-07-13 20:06:08,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143575770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:08,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:08,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:06:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208947671] [2022-07-13 20:06:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:08,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:06:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:08,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:06:08,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:06:08,170 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:08,827 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2022-07-13 20:06:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:06:08,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 20:06:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:08,845 INFO L225 Difference]: With dead ends: 4802 [2022-07-13 20:06:08,845 INFO L226 Difference]: Without dead ends: 2427 [2022-07-13 20:06:08,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:06:08,856 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4428 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 16676 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:08,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 16676 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:06:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-07-13 20:06:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2022-07-13 20:06:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-13 20:06:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2022-07-13 20:06:08,959 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2022-07-13 20:06:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:08,960 INFO L495 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2022-07-13 20:06:08,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2022-07-13 20:06:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:06:08,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:08,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:08,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:06:08,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2022-07-13 20:06:08,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:08,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292170640] [2022-07-13 20:06:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:08,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:09,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:09,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292170640] [2022-07-13 20:06:09,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292170640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:09,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:09,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047737029] [2022-07-13 20:06:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:09,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:09,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:09,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:09,072 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:09,719 INFO L93 Difference]: Finished difference Result 2807 states and 4974 transitions. [2022-07-13 20:06:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:06:09,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 20:06:09,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:09,728 INFO L225 Difference]: With dead ends: 2807 [2022-07-13 20:06:09,728 INFO L226 Difference]: Without dead ends: 2574 [2022-07-13 20:06:09,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:06:09,730 INFO L413 NwaCegarLoop]: 4246 mSDtfsCounter, 4351 mSDsluCounter, 16427 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 20673 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:09,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 20673 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 20:06:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-07-13 20:06:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2473. [2022-07-13 20:06:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8188976377952757) internal successors, (4389), 2417 states have internal predecessors, (4389), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-13 20:06:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4470 transitions. [2022-07-13 20:06:09,773 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4470 transitions. Word has length 68 [2022-07-13 20:06:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:09,773 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4470 transitions. [2022-07-13 20:06:09,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4470 transitions. [2022-07-13 20:06:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:06:09,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:09,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:09,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:06:09,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:09,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2022-07-13 20:06:09,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:09,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514410145] [2022-07-13 20:06:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:09,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:09,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:09,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514410145] [2022-07-13 20:06:09,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514410145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:09,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:09,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336755953] [2022-07-13 20:06:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:09,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:09,834 INFO L87 Difference]: Start difference. First operand 2473 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:10,573 INFO L93 Difference]: Finished difference Result 3193 states and 5538 transitions. [2022-07-13 20:06:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:06:10,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 20:06:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:10,582 INFO L225 Difference]: With dead ends: 3193 [2022-07-13 20:06:10,583 INFO L226 Difference]: Without dead ends: 2851 [2022-07-13 20:06:10,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:06:10,588 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4383 mSDsluCounter, 16249 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 20418 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:10,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4392 Valid, 20418 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:06:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-07-13 20:06:10,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2692. [2022-07-13 20:06:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2596 states have (on average 1.7927580893682589) internal successors, (4654), 2602 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-13 20:06:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4787 transitions. [2022-07-13 20:06:10,646 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4787 transitions. Word has length 68 [2022-07-13 20:06:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:10,646 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4787 transitions. [2022-07-13 20:06:10,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:10,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4787 transitions. [2022-07-13 20:06:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:06:10,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:10,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:10,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:06:10,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:10,650 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2022-07-13 20:06:10,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:10,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633231453] [2022-07-13 20:06:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:10,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:10,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:10,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633231453] [2022-07-13 20:06:10,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633231453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:10,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:10,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:10,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905764787] [2022-07-13 20:06:10,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:10,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:10,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:10,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:10,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:10,765 INFO L87 Difference]: Start difference. First operand 2692 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:11,453 INFO L93 Difference]: Finished difference Result 4037 states and 6769 transitions. [2022-07-13 20:06:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:06:11,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 20:06:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:11,465 INFO L225 Difference]: With dead ends: 4037 [2022-07-13 20:06:11,465 INFO L226 Difference]: Without dead ends: 3476 [2022-07-13 20:06:11,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:06:11,468 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 4357 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:11,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 20671 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 20:06:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-07-13 20:06:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3104. [2022-07-13 20:06:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2940 states have (on average 1.7530612244897958) internal successors, (5154), 2950 states have internal predecessors, (5154), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-07-13 20:06:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5389 transitions. [2022-07-13 20:06:11,528 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5389 transitions. Word has length 68 [2022-07-13 20:06:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:11,529 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 5389 transitions. [2022-07-13 20:06:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:11,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5389 transitions. [2022-07-13 20:06:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:06:11,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:11,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:11,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:06:11,531 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:11,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2022-07-13 20:06:11,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:11,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223672760] [2022-07-13 20:06:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:11,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:11,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:11,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223672760] [2022-07-13 20:06:11,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223672760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:11,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:11,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:06:11,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693666359] [2022-07-13 20:06:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:11,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:06:11,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:06:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:06:11,580 INFO L87 Difference]: Start difference. First operand 3104 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:12,257 INFO L93 Difference]: Finished difference Result 5435 states and 8809 transitions. [2022-07-13 20:06:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:06:12,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 20:06:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:12,272 INFO L225 Difference]: With dead ends: 5435 [2022-07-13 20:06:12,272 INFO L226 Difference]: Without dead ends: 4462 [2022-07-13 20:06:12,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:06:12,278 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 4362 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20643 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:12,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20643 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 20:06:12,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-07-13 20:06:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 3941. [2022-07-13 20:06:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3645 states have (on average 1.696570644718793) internal successors, (6184), 3663 states have internal predecessors, (6184), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-07-13 20:06:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6633 transitions. [2022-07-13 20:06:12,389 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6633 transitions. Word has length 68 [2022-07-13 20:06:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:12,389 INFO L495 AbstractCegarLoop]: Abstraction has 3941 states and 6633 transitions. [2022-07-13 20:06:12,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6633 transitions. [2022-07-13 20:06:12,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:06:12,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:12,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:12,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:06:12,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2022-07-13 20:06:12,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:12,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754943323] [2022-07-13 20:06:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:12,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:12,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:12,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:06:12,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:12,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754943323] [2022-07-13 20:06:12,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754943323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:12,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:12,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:06:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91968257] [2022-07-13 20:06:12,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:12,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:06:12,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:12,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:06:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:06:12,439 INFO L87 Difference]: Start difference. First operand 3941 states and 6633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:13,163 INFO L93 Difference]: Finished difference Result 7278 states and 11576 transitions. [2022-07-13 20:06:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:06:13,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-07-13 20:06:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:13,184 INFO L225 Difference]: With dead ends: 7278 [2022-07-13 20:06:13,184 INFO L226 Difference]: Without dead ends: 5469 [2022-07-13 20:06:13,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 20:06:13,193 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 4485 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:13,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 16542 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 20:06:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2022-07-13 20:06:13,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4882. [2022-07-13 20:06:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4428 states have (on average 1.6456639566395663) internal successors, (7287), 4463 states have internal predecessors, (7287), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-07-13 20:06:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7956 transitions. [2022-07-13 20:06:13,335 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7956 transitions. Word has length 68 [2022-07-13 20:06:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:13,335 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 7956 transitions. [2022-07-13 20:06:13,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:06:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7956 transitions. [2022-07-13 20:06:13,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 20:06:13,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:13,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 20:06:13,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:06:13,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2022-07-13 20:06:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:13,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715240125] [2022-07-13 20:06:13,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:13,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 20:06:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 20:06:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:06:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:13,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715240125] [2022-07-13 20:06:13,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715240125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:13,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451106444] [2022-07-13 20:06:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:13,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:13,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:13,424 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) [2022-07-13 20:06:13,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:06:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:13,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:06:13,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 20:06:13,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:13,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451106444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:13,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:13,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:06:13,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290229319] [2022-07-13 20:06:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:13,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:13,594 INFO L87 Difference]: Start difference. First operand 4882 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:06:13,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:13,769 INFO L93 Difference]: Finished difference Result 10239 states and 15790 transitions. [2022-07-13 20:06:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:13,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-07-13 20:06:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:13,811 INFO L225 Difference]: With dead ends: 10239 [2022-07-13 20:06:13,812 INFO L226 Difference]: Without dead ends: 7489 [2022-07-13 20:06:13,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:13,824 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4098 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:13,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:13,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-07-13 20:06:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7435. [2022-07-13 20:06:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7435 states, 6567 states have (on average 1.5784985533729252) internal successors, (10366), 6635 states have internal predecessors, (10366), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-07-13 20:06:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11621 transitions. [2022-07-13 20:06:14,070 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11621 transitions. Word has length 110 [2022-07-13 20:06:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:14,071 INFO L495 AbstractCegarLoop]: Abstraction has 7435 states and 11621 transitions. [2022-07-13 20:06:14,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 20:06:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11621 transitions. [2022-07-13 20:06:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 20:06:14,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:14,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 20:06:14,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:06:14,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:14,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2022-07-13 20:06:14,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:14,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586941134] [2022-07-13 20:06:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:14,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 20:06:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 20:06:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:06:14,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:14,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586941134] [2022-07-13 20:06:14,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586941134] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:14,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477465240] [2022-07-13 20:06:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:14,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:14,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:14,378 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) [2022-07-13 20:06:14,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:06:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:14,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:06:14,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 20:06:14,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:14,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477465240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:14,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:14,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:06:14,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244701589] [2022-07-13 20:06:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:14,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:14,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:14,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:14,488 INFO L87 Difference]: Start difference. First operand 7435 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:06:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:14,769 INFO L93 Difference]: Finished difference Result 17751 states and 26795 transitions. [2022-07-13 20:06:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:14,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-07-13 20:06:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:14,805 INFO L225 Difference]: With dead ends: 17751 [2022-07-13 20:06:14,806 INFO L226 Difference]: Without dead ends: 12449 [2022-07-13 20:06:14,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:14,823 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 154 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:14,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-07-13 20:06:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12449. [2022-07-13 20:06:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10768 states have (on average 1.5169947994056463) internal successors, (16335), 10885 states have internal predecessors, (16335), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-07-13 20:06:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18906 transitions. [2022-07-13 20:06:15,154 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18906 transitions. Word has length 110 [2022-07-13 20:06:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:15,155 INFO L495 AbstractCegarLoop]: Abstraction has 12449 states and 18906 transitions. [2022-07-13 20:06:15,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:06:15,155 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18906 transitions. [2022-07-13 20:06:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 20:06:15,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:15,176 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:15,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 20:06:15,391 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,SelfDestructingSolverStorable7 [2022-07-13 20:06:15,391 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:15,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2022-07-13 20:06:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:15,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399516756] [2022-07-13 20:06:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 20:06:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:06:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 20:06:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 20:06:15,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:15,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399516756] [2022-07-13 20:06:15,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399516756] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:15,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738886925] [2022-07-13 20:06:15,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:15,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:15,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:15,464 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) [2022-07-13 20:06:15,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 20:06:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:15,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:06:15,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 20:06:15,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:15,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738886925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:15,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:15,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:06:15,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413717069] [2022-07-13 20:06:15,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:15,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:15,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:15,660 INFO L87 Difference]: Start difference. First operand 12449 states and 18906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 20:06:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:16,111 INFO L93 Difference]: Finished difference Result 32641 states and 48463 transitions. [2022-07-13 20:06:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:16,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-13 20:06:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:16,253 INFO L225 Difference]: With dead ends: 32641 [2022-07-13 20:06:16,253 INFO L226 Difference]: Without dead ends: 22329 [2022-07-13 20:06:16,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:16,278 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4056 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:16,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 4318 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2022-07-13 20:06:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 22119. [2022-07-13 20:06:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 18858 states have (on average 1.4761374482978047) internal successors, (27837), 19089 states have internal predecessors, (27837), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-07-13 20:06:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 32744 transitions. [2022-07-13 20:06:16,851 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 32744 transitions. Word has length 142 [2022-07-13 20:06:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:16,851 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 32744 transitions. [2022-07-13 20:06:16,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 20:06:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 32744 transitions. [2022-07-13 20:06:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 20:06:16,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:16,896 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:16,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 20:06:17,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:17,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:17,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:17,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2022-07-13 20:06:17,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:17,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91735491] [2022-07-13 20:06:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 20:06:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 20:06:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 20:06:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 20:06:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 20:06:17,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91735491] [2022-07-13 20:06:17,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91735491] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:17,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729517127] [2022-07-13 20:06:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:17,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:17,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:17,196 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) [2022-07-13 20:06:17,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 20:06:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:17,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:06:17,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 20:06:17,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:17,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729517127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:17,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:17,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:06:17,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346566534] [2022-07-13 20:06:17,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:17,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:17,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:17,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:17,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:17,360 INFO L87 Difference]: Start difference. First operand 22119 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 20:06:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:17,989 INFO L93 Difference]: Finished difference Result 44457 states and 65784 transitions. [2022-07-13 20:06:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:17,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-07-13 20:06:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:18,060 INFO L225 Difference]: With dead ends: 44457 [2022-07-13 20:06:18,060 INFO L226 Difference]: Without dead ends: 24473 [2022-07-13 20:06:18,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:18,107 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4075 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:18,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:18,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24473 states. [2022-07-13 20:06:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24473 to 24473. [2022-07-13 20:06:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24473 states, 21000 states have (on average 1.4191904761904761) internal successors, (29803), 21231 states have internal predecessors, (29803), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-07-13 20:06:18,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24473 states to 24473 states and 34832 transitions. [2022-07-13 20:06:18,964 INFO L78 Accepts]: Start accepts. Automaton has 24473 states and 34832 transitions. Word has length 159 [2022-07-13 20:06:18,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:18,964 INFO L495 AbstractCegarLoop]: Abstraction has 24473 states and 34832 transitions. [2022-07-13 20:06:18,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 20:06:18,965 INFO L276 IsEmpty]: Start isEmpty. Operand 24473 states and 34832 transitions. [2022-07-13 20:06:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 20:06:19,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:19,009 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:19,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 20:06:19,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:19,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:19,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2022-07-13 20:06:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:19,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811205289] [2022-07-13 20:06:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 20:06:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 20:06:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 20:06:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 20:06:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 20:06:19,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:19,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811205289] [2022-07-13 20:06:19,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811205289] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:19,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249965557] [2022-07-13 20:06:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:19,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:19,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:19,309 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) [2022-07-13 20:06:19,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 20:06:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:19,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 20:06:19,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 20:06:19,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:19,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249965557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:19,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:19,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:06:19,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796390726] [2022-07-13 20:06:19,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:19,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:19,459 INFO L87 Difference]: Start difference. First operand 24473 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 20:06:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:20,207 INFO L93 Difference]: Finished difference Result 41324 states and 58008 transitions. [2022-07-13 20:06:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2022-07-13 20:06:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:20,294 INFO L225 Difference]: With dead ends: 41324 [2022-07-13 20:06:20,294 INFO L226 Difference]: Without dead ends: 26013 [2022-07-13 20:06:20,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:20,332 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4088 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:20,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4325 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26013 states. [2022-07-13 20:06:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26013 to 25873. [2022-07-13 20:06:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25873 states, 22288 states have (on average 1.3940685570710696) internal successors, (31071), 22519 states have internal predecessors, (31071), 1943 states have call successors, (1943), 1448 states have call predecessors, (1943), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-07-13 20:06:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25873 states to 25873 states and 36232 transitions. [2022-07-13 20:06:21,262 INFO L78 Accepts]: Start accepts. Automaton has 25873 states and 36232 transitions. Word has length 159 [2022-07-13 20:06:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:21,262 INFO L495 AbstractCegarLoop]: Abstraction has 25873 states and 36232 transitions. [2022-07-13 20:06:21,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 20:06:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 25873 states and 36232 transitions. [2022-07-13 20:06:21,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 20:06:21,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:21,313 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:21,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 20:06:21,527 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,SelfDestructingSolverStorable10 [2022-07-13 20:06:21,527 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:21,528 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2022-07-13 20:06:21,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:21,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982542460] [2022-07-13 20:06:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:21,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 20:06:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 20:06:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 20:06:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 20:06:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-13 20:06:21,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:21,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982542460] [2022-07-13 20:06:21,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982542460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:21,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994788757] [2022-07-13 20:06:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:21,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:21,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:21,612 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) [2022-07-13 20:06:21,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 20:06:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:21,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 20:06:21,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 20:06:21,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:21,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994788757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:21,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:21,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:06:21,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284333161] [2022-07-13 20:06:21,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:21,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:21,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:21,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:21,737 INFO L87 Difference]: Start difference. First operand 25873 states and 36232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 20:06:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:22,805 INFO L93 Difference]: Finished difference Result 70245 states and 97750 transitions. [2022-07-13 20:06:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:22,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-13 20:06:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:22,951 INFO L225 Difference]: With dead ends: 70245 [2022-07-13 20:06:22,951 INFO L226 Difference]: Without dead ends: 46511 [2022-07-13 20:06:23,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:23,006 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4102 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:23,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4334 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46511 states. [2022-07-13 20:06:24,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46511 to 45781. [2022-07-13 20:06:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45781 states, 39030 states have (on average 1.3636945939021266) internal successors, (53225), 39491 states have internal predecessors, (53225), 3677 states have call successors, (3677), 2688 states have call predecessors, (3677), 3072 states have return successors, (7178), 3665 states have call predecessors, (7178), 3677 states have call successors, (7178) [2022-07-13 20:06:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45781 states to 45781 states and 64080 transitions. [2022-07-13 20:06:24,552 INFO L78 Accepts]: Start accepts. Automaton has 45781 states and 64080 transitions. Word has length 160 [2022-07-13 20:06:24,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:24,552 INFO L495 AbstractCegarLoop]: Abstraction has 45781 states and 64080 transitions. [2022-07-13 20:06:24,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 20:06:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 45781 states and 64080 transitions. [2022-07-13 20:06:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 20:06:24,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:24,626 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:24,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 20:06:24,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:24,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:24,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2022-07-13 20:06:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:24,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975703468] [2022-07-13 20:06:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 20:06:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 20:06:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 20:06:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 20:06:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 20:06:24,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:24,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975703468] [2022-07-13 20:06:24,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975703468] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:24,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659292843] [2022-07-13 20:06:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:24,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:24,918 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) [2022-07-13 20:06:24,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 20:06:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:24,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:06:25,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 20:06:25,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:25,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659292843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:25,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:25,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:06:25,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906743803] [2022-07-13 20:06:25,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:25,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:25,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:25,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:25,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:25,063 INFO L87 Difference]: Start difference. First operand 45781 states and 64080 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 20:06:26,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:26,675 INFO L93 Difference]: Finished difference Result 75161 states and 105873 transitions. [2022-07-13 20:06:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:26,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-07-13 20:06:26,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:26,775 INFO L225 Difference]: With dead ends: 75161 [2022-07-13 20:06:26,775 INFO L226 Difference]: Without dead ends: 40527 [2022-07-13 20:06:26,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:26,827 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:26,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40527 states. [2022-07-13 20:06:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40527 to 29943. [2022-07-13 20:06:28,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29943 states, 25784 states have (on average 1.3390862550418865) internal successors, (34527), 26025 states have internal predecessors, (34527), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3934), 2229 states have call predecessors, (3934), 2245 states have call successors, (3934) [2022-07-13 20:06:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 40706 transitions. [2022-07-13 20:06:28,118 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 40706 transitions. Word has length 160 [2022-07-13 20:06:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:28,118 INFO L495 AbstractCegarLoop]: Abstraction has 29943 states and 40706 transitions. [2022-07-13 20:06:28,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 20:06:28,118 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 40706 transitions. [2022-07-13 20:06:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 20:06:28,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:28,164 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:28,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 20:06:28,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:28,381 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2022-07-13 20:06:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:28,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417030686] [2022-07-13 20:06:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 20:06:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 20:06:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 20:06:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 20:06:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 20:06:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:28,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417030686] [2022-07-13 20:06:28,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417030686] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:28,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100337541] [2022-07-13 20:06:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:28,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:28,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:28,466 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) [2022-07-13 20:06:28,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 20:06:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:28,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 20:06:28,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 20:06:28,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:28,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100337541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:28,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:28,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:06:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679976222] [2022-07-13 20:06:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:28,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:28,601 INFO L87 Difference]: Start difference. First operand 29943 states and 40706 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 20:06:30,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:30,337 INFO L93 Difference]: Finished difference Result 82801 states and 112154 transitions. [2022-07-13 20:06:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:30,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-13 20:06:30,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:30,473 INFO L225 Difference]: With dead ends: 82801 [2022-07-13 20:06:30,474 INFO L226 Difference]: Without dead ends: 55005 [2022-07-13 20:06:30,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:30,520 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4098 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:30,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55005 states. [2022-07-13 20:06:32,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55005 to 53491. [2022-07-13 20:06:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53491 states, 45624 states have (on average 1.3054751884972822) internal successors, (59561), 46105 states have internal predecessors, (59561), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8740), 4233 states have call predecessors, (8740), 4265 states have call successors, (8740) [2022-07-13 20:06:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53491 states to 53491 states and 72566 transitions. [2022-07-13 20:06:32,827 INFO L78 Accepts]: Start accepts. Automaton has 53491 states and 72566 transitions. Word has length 160 [2022-07-13 20:06:32,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:32,827 INFO L495 AbstractCegarLoop]: Abstraction has 53491 states and 72566 transitions. [2022-07-13 20:06:32,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 20:06:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 53491 states and 72566 transitions. [2022-07-13 20:06:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 20:06:32,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:32,896 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:32,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 20:06:33,105 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,SelfDestructingSolverStorable13 [2022-07-13 20:06:33,105 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash -392345557, now seen corresponding path program 1 times [2022-07-13 20:06:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:33,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906690382] [2022-07-13 20:06:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:33,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 20:06:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 20:06:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 20:06:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 20:06:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-13 20:06:33,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:33,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906690382] [2022-07-13 20:06:33,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906690382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:33,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:33,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:06:33,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894874663] [2022-07-13 20:06:33,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:33,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:06:33,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:33,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:06:33,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:06:33,162 INFO L87 Difference]: Start difference. First operand 53491 states and 72566 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 20:06:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:35,266 INFO L93 Difference]: Finished difference Result 102539 states and 136687 transitions. [2022-07-13 20:06:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:06:35,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-13 20:06:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:35,391 INFO L225 Difference]: With dead ends: 102539 [2022-07-13 20:06:35,391 INFO L226 Difference]: Without dead ends: 51193 [2022-07-13 20:06:35,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:35,458 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 282 mSDsluCounter, 12001 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16137 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:35,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16137 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 20:06:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51193 states. [2022-07-13 20:06:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51193 to 48475. [2022-07-13 20:06:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48475 states, 41692 states have (on average 1.3054542837954524) internal successors, (54427), 42585 states have internal predecessors, (54427), 3253 states have call successors, (3253), 2472 states have call predecessors, (3253), 3528 states have return successors, (7133), 3449 states have call predecessors, (7133), 3253 states have call successors, (7133) [2022-07-13 20:06:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48475 states to 48475 states and 64813 transitions. [2022-07-13 20:06:37,612 INFO L78 Accepts]: Start accepts. Automaton has 48475 states and 64813 transitions. Word has length 160 [2022-07-13 20:06:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:37,613 INFO L495 AbstractCegarLoop]: Abstraction has 48475 states and 64813 transitions. [2022-07-13 20:06:37,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 20:06:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 48475 states and 64813 transitions. [2022-07-13 20:06:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 20:06:37,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:37,670 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:37,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 20:06:37,670 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash -809968940, now seen corresponding path program 1 times [2022-07-13 20:06:37,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:37,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656087317] [2022-07-13 20:06:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 20:06:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 20:06:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 20:06:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 20:06:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 20:06:37,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:37,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656087317] [2022-07-13 20:06:37,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656087317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:37,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:06:37,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:06:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929152282] [2022-07-13 20:06:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:37,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:06:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:06:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:06:37,727 INFO L87 Difference]: Start difference. First operand 48475 states and 64813 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 20:06:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:39,448 INFO L93 Difference]: Finished difference Result 86015 states and 113686 transitions. [2022-07-13 20:06:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:06:39,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-13 20:06:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:39,535 INFO L225 Difference]: With dead ends: 86015 [2022-07-13 20:06:39,536 INFO L226 Difference]: Without dead ends: 39677 [2022-07-13 20:06:39,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:39,591 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 282 mSDsluCounter, 12000 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16135 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:39,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16135 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 20:06:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39677 states. [2022-07-13 20:06:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39677 to 37027. [2022-07-13 20:06:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37027 states, 31990 states have (on average 1.3210690840887778) internal successors, (42261), 32627 states have internal predecessors, (42261), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4967), 2559 states have call predecessors, (4967), 2427 states have call successors, (4967) [2022-07-13 20:06:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37027 states to 37027 states and 49655 transitions. [2022-07-13 20:06:41,420 INFO L78 Accepts]: Start accepts. Automaton has 37027 states and 49655 transitions. Word has length 160 [2022-07-13 20:06:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:41,420 INFO L495 AbstractCegarLoop]: Abstraction has 37027 states and 49655 transitions. [2022-07-13 20:06:41,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 20:06:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 37027 states and 49655 transitions. [2022-07-13 20:06:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 20:06:41,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:41,465 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:41,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 20:06:41,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:41,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1498858591, now seen corresponding path program 1 times [2022-07-13 20:06:41,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:41,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497645626] [2022-07-13 20:06:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:06:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 20:06:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 20:06:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-13 20:06:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-13 20:06:41,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:41,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497645626] [2022-07-13 20:06:41,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497645626] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:41,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116848402] [2022-07-13 20:06:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:41,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:41,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:41,538 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) [2022-07-13 20:06:41,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 20:06:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:41,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 20:06:41,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 20:06:41,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:41,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116848402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:41,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:41,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:06:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69591243] [2022-07-13 20:06:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:41,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:41,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:41,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:41,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:41,655 INFO L87 Difference]: Start difference. First operand 37027 states and 49655 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 20:06:43,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:43,069 INFO L93 Difference]: Finished difference Result 60935 states and 83299 transitions. [2022-07-13 20:06:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:43,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2022-07-13 20:06:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:43,265 INFO L225 Difference]: With dead ends: 60935 [2022-07-13 20:06:43,265 INFO L226 Difference]: Without dead ends: 37197 [2022-07-13 20:06:43,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:43,299 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 130 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 8382 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:43,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 8382 Invalid, 10 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37197 states. [2022-07-13 20:06:44,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37197 to 37027. [2022-07-13 20:06:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37027 states, 31990 states have (on average 1.2994998437011567) internal successors, (41571), 32627 states have internal predecessors, (41571), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4967), 2559 states have call predecessors, (4967), 2427 states have call successors, (4967) [2022-07-13 20:06:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37027 states to 37027 states and 48965 transitions. [2022-07-13 20:06:44,829 INFO L78 Accepts]: Start accepts. Automaton has 37027 states and 48965 transitions. Word has length 162 [2022-07-13 20:06:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:06:44,830 INFO L495 AbstractCegarLoop]: Abstraction has 37027 states and 48965 transitions. [2022-07-13 20:06:44,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 20:06:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 37027 states and 48965 transitions. [2022-07-13 20:06:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 20:06:44,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:06:44,875 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:06:44,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 20:06:45,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 20:06:45,076 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:06:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:06:45,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1871536255, now seen corresponding path program 1 times [2022-07-13 20:06:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:06:45,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976988624] [2022-07-13 20:06:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:45,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:06:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:06:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 20:06:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 20:06:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:06:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 20:06:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:06:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 20:06:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 20:06:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:06:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-13 20:06:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-13 20:06:45,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:06:45,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976988624] [2022-07-13 20:06:45,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976988624] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:06:45,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294404794] [2022-07-13 20:06:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:06:45,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:06:45,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:06:45,138 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) [2022-07-13 20:06:45,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 20:06:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:06:45,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:06:45,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:06:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 20:06:45,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:06:45,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294404794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:06:45,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:06:45,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:06:45,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75608701] [2022-07-13 20:06:45,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:06:45,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:06:45,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:06:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:06:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:45,256 INFO L87 Difference]: Start difference. First operand 37027 states and 48965 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 20:06:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:06:46,741 INFO L93 Difference]: Finished difference Result 64013 states and 85317 transitions. [2022-07-13 20:06:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:06:46,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2022-07-13 20:06:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:06:46,818 INFO L225 Difference]: With dead ends: 64013 [2022-07-13 20:06:46,818 INFO L226 Difference]: Without dead ends: 31587 [2022-07-13 20:06:46,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:06:46,876 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 4110 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:06:46,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4110 Valid, 4167 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:06:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31587 states.