./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_14-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_14-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa --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 1e1f6c8a80d54f6d4b7b413368cc99af6eca243b930331d178961d851b56afbd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:04:17,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:04:17,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:04:17,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:04:17,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:04:17,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:04:17,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:04:17,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:04:17,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:04:17,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:04:17,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:04:17,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:04:17,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:04:17,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:04:17,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:04:17,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:04:17,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:04:17,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:04:17,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:04:17,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:04:17,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:04:17,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:04:17,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:04:17,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:04:17,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:04:17,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:04:17,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:04:17,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:04:17,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:04:17,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:04:17,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:04:17,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:04:17,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:04:17,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:04:17,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:04:17,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:04:17,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:04:17,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:04:17,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:04:17,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:04:17,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:04:17,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:04:17,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:04:17,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:04:17,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:04:17,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:04:17,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:04:17,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:04:17,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:04:17,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:04:17,695 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:04:17,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:04:17,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:04:17,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:04:17,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:04:17,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:04:17,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:04:17,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:04:17,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:04:17,696 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:04:17,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:04:17,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:04:17,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:04:17,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:04:17,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:04:17,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:04:17,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:04:17,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:04:17,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:04:17,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:04:17,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:04:17,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:04:17,699 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:04:17,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:04:17,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:04:17,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:04:17,699 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e1f6c8a80d54f6d4b7b413368cc99af6eca243b930331d178961d851b56afbd [2021-12-07 01:04:17,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:04:17,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:04:17,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:04:17,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:04:17,905 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:04:17,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/locks/test_locks_14-1.c [2021-12-07 01:04:17,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/data/8e28285ea/e8cec3624fb94793be7d00ee0f206171/FLAG37ced35d4 [2021-12-07 01:04:18,327 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:04:18,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/sv-benchmarks/c/locks/test_locks_14-1.c [2021-12-07 01:04:18,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/data/8e28285ea/e8cec3624fb94793be7d00ee0f206171/FLAG37ced35d4 [2021-12-07 01:04:18,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/data/8e28285ea/e8cec3624fb94793be7d00ee0f206171 [2021-12-07 01:04:18,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:04:18,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:04:18,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:04:18,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:04:18,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:04:18,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e18c6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18, skipping insertion in model container [2021-12-07 01:04:18,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:04:18,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:04:18,494 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/sv-benchmarks/c/locks/test_locks_14-1.c[5283,5296] [2021-12-07 01:04:18,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:04:18,504 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:04:18,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/sv-benchmarks/c/locks/test_locks_14-1.c[5283,5296] [2021-12-07 01:04:18,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:04:18,538 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:04:18,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18 WrapperNode [2021-12-07 01:04:18,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:04:18,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:04:18,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:04:18,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:04:18,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,571 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 182 [2021-12-07 01:04:18,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:04:18,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:04:18,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:04:18,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:04:18,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:04:18,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:04:18,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:04:18,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:04:18,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (1/1) ... [2021-12-07 01:04:18,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:04:18,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:04:18,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:04:18,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:04:18,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:04:18,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:04:18,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:04:18,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:04:18,733 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:04:18,734 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:04:18,876 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:04:18,881 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:04:18,881 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:04:18,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:04:18 BoogieIcfgContainer [2021-12-07 01:04:18,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:04:18,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:04:18,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:04:18,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:04:18,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:04:18" (1/3) ... [2021-12-07 01:04:18,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aceb61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:04:18, skipping insertion in model container [2021-12-07 01:04:18,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:04:18" (2/3) ... [2021-12-07 01:04:18,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aceb61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:04:18, skipping insertion in model container [2021-12-07 01:04:18,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:04:18" (3/3) ... [2021-12-07 01:04:18,889 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2021-12-07 01:04:18,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:04:18,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:04:18,928 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:04:18,933 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:04:18,934 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:04:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 50 states have (on average 1.92) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-07 01:04:18,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:18,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:18,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-12-07 01:04:18,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:18,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358083401] [2021-12-07 01:04:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:18,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358083401] [2021-12-07 01:04:19,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358083401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362919691] [2021-12-07 01:04:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,143 INFO L87 Difference]: Start difference. First operand has 52 states, 50 states have (on average 1.92) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,179 INFO L93 Difference]: Finished difference Result 107 states and 193 transitions. [2021-12-07 01:04:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-07 01:04:19,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,189 INFO L225 Difference]: With dead ends: 107 [2021-12-07 01:04:19,190 INFO L226 Difference]: Without dead ends: 93 [2021-12-07 01:04:19,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,195 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 187 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-07 01:04:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-12-07 01:04:19,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.903225806451613) internal successors, (118), 62 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-12-07 01:04:19,226 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-12-07 01:04:19,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,227 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-12-07 01:04:19,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-12-07 01:04:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-07 01:04:19,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:19,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:04:19,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-12-07 01:04:19,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915741339] [2021-12-07 01:04:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915741339] [2021-12-07 01:04:19,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915741339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203980358] [2021-12-07 01:04:19,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,278 INFO L87 Difference]: Start difference. First operand 63 states and 118 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,297 INFO L93 Difference]: Finished difference Result 154 states and 289 transitions. [2021-12-07 01:04:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-07 01:04:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,299 INFO L225 Difference]: With dead ends: 154 [2021-12-07 01:04:19,299 INFO L226 Difference]: Without dead ends: 93 [2021-12-07 01:04:19,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,300 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 68 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 199 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-07 01:04:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-12-07 01:04:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.8888888888888888) internal successors, (170), 90 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 170 transitions. [2021-12-07 01:04:19,310 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 170 transitions. Word has length 21 [2021-12-07 01:04:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,310 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 170 transitions. [2021-12-07 01:04:19,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 170 transitions. [2021-12-07 01:04:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-07 01:04:19,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:19,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:04:19,312 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1188346975, now seen corresponding path program 1 times [2021-12-07 01:04:19,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997996218] [2021-12-07 01:04:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997996218] [2021-12-07 01:04:19,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997996218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95699370] [2021-12-07 01:04:19,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,360 INFO L87 Difference]: Start difference. First operand 91 states and 170 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,374 INFO L93 Difference]: Finished difference Result 141 states and 258 transitions. [2021-12-07 01:04:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-07 01:04:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,375 INFO L225 Difference]: With dead ends: 141 [2021-12-07 01:04:19,375 INFO L226 Difference]: Without dead ends: 96 [2021-12-07 01:04:19,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,377 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 70 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-07 01:04:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-12-07 01:04:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.8494623655913978) internal successors, (172), 93 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-12-07 01:04:19,386 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 22 [2021-12-07 01:04:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,386 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-12-07 01:04:19,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-12-07 01:04:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-07 01:04:19,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:19,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:04:19,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1112475615, now seen corresponding path program 1 times [2021-12-07 01:04:19,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768612756] [2021-12-07 01:04:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768612756] [2021-12-07 01:04:19,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768612756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35634220] [2021-12-07 01:04:19,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,425 INFO L87 Difference]: Start difference. First operand 94 states and 172 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,442 INFO L93 Difference]: Finished difference Result 181 states and 333 transitions. [2021-12-07 01:04:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-07 01:04:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,445 INFO L225 Difference]: With dead ends: 181 [2021-12-07 01:04:19,445 INFO L226 Difference]: Without dead ends: 179 [2021-12-07 01:04:19,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,448 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 65 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 173 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-07 01:04:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2021-12-07 01:04:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.846774193548387) internal successors, (229), 124 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 229 transitions. [2021-12-07 01:04:19,462 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 229 transitions. Word has length 22 [2021-12-07 01:04:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,462 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 229 transitions. [2021-12-07 01:04:19,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 229 transitions. [2021-12-07 01:04:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-07 01:04:19,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:04:19,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:04:19,463 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash -475872287, now seen corresponding path program 1 times [2021-12-07 01:04:19,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475390739] [2021-12-07 01:04:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475390739] [2021-12-07 01:04:19,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475390739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295834319] [2021-12-07 01:04:19,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,496 INFO L87 Difference]: Start difference. First operand 125 states and 229 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,508 INFO L93 Difference]: Finished difference Result 301 states and 555 transitions. [2021-12-07 01:04:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-07 01:04:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,509 INFO L225 Difference]: With dead ends: 301 [2021-12-07 01:04:19,509 INFO L226 Difference]: Without dead ends: 181 [2021-12-07 01:04:19,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,511 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 67 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 200 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-07 01:04:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2021-12-07 01:04:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.8370786516853932) internal successors, (327), 178 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 327 transitions. [2021-12-07 01:04:19,521 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 327 transitions. Word has length 22 [2021-12-07 01:04:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,522 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 327 transitions. [2021-12-07 01:04:19,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 327 transitions. [2021-12-07 01:04:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-07 01:04:19,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,523 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:19,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:04:19,523 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 127218090, now seen corresponding path program 1 times [2021-12-07 01:04:19,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181707205] [2021-12-07 01:04:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181707205] [2021-12-07 01:04:19,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181707205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199956157] [2021-12-07 01:04:19,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,552 INFO L87 Difference]: Start difference. First operand 179 states and 327 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,562 INFO L93 Difference]: Finished difference Result 270 states and 490 transitions. [2021-12-07 01:04:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-07 01:04:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,564 INFO L225 Difference]: With dead ends: 270 [2021-12-07 01:04:19,564 INFO L226 Difference]: Without dead ends: 183 [2021-12-07 01:04:19,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,565 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 220 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-07 01:04:19,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2021-12-07 01:04:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.8166666666666667) internal successors, (327), 180 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 327 transitions. [2021-12-07 01:04:19,574 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 327 transitions. Word has length 23 [2021-12-07 01:04:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,574 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 327 transitions. [2021-12-07 01:04:19,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 327 transitions. [2021-12-07 01:04:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-07 01:04:19,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,576 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:19,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:04:19,576 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1866926616, now seen corresponding path program 1 times [2021-12-07 01:04:19,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099154422] [2021-12-07 01:04:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099154422] [2021-12-07 01:04:19,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099154422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759882272] [2021-12-07 01:04:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,602 INFO L87 Difference]: Start difference. First operand 181 states and 327 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,613 INFO L93 Difference]: Finished difference Result 525 states and 953 transitions. [2021-12-07 01:04:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-07 01:04:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,616 INFO L225 Difference]: With dead ends: 525 [2021-12-07 01:04:19,616 INFO L226 Difference]: Without dead ends: 351 [2021-12-07 01:04:19,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,617 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 67 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-12-07 01:04:19,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2021-12-07 01:04:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.8017241379310345) internal successors, (627), 348 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 627 transitions. [2021-12-07 01:04:19,631 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 627 transitions. Word has length 23 [2021-12-07 01:04:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,631 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 627 transitions. [2021-12-07 01:04:19,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 627 transitions. [2021-12-07 01:04:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-07 01:04:19,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,633 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:19,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:04:19,633 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash -278578714, now seen corresponding path program 1 times [2021-12-07 01:04:19,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181545663] [2021-12-07 01:04:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181545663] [2021-12-07 01:04:19,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181545663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132891656] [2021-12-07 01:04:19,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,664 INFO L87 Difference]: Start difference. First operand 349 states and 627 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,676 INFO L93 Difference]: Finished difference Result 449 states and 813 transitions. [2021-12-07 01:04:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-07 01:04:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,679 INFO L225 Difference]: With dead ends: 449 [2021-12-07 01:04:19,679 INFO L226 Difference]: Without dead ends: 447 [2021-12-07 01:04:19,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,680 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 62 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 242 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-07 01:04:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 349. [2021-12-07 01:04:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.7902298850574712) internal successors, (623), 348 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 623 transitions. [2021-12-07 01:04:19,693 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 623 transitions. Word has length 23 [2021-12-07 01:04:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,693 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 623 transitions. [2021-12-07 01:04:19,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 623 transitions. [2021-12-07 01:04:19,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:04:19,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,695 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:19,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:04:19,695 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2039937514, now seen corresponding path program 1 times [2021-12-07 01:04:19,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625208547] [2021-12-07 01:04:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625208547] [2021-12-07 01:04:19,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625208547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611898669] [2021-12-07 01:04:19,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,721 INFO L87 Difference]: Start difference. First operand 349 states and 623 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,735 INFO L93 Difference]: Finished difference Result 661 states and 1193 transitions. [2021-12-07 01:04:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-07 01:04:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,739 INFO L225 Difference]: With dead ends: 661 [2021-12-07 01:04:19,739 INFO L226 Difference]: Without dead ends: 659 [2021-12-07 01:04:19,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,740 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 59 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 169 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-07 01:04:19,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 481. [2021-12-07 01:04:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.7645833333333334) internal successors, (847), 480 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 847 transitions. [2021-12-07 01:04:19,756 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 847 transitions. Word has length 24 [2021-12-07 01:04:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,756 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 847 transitions. [2021-12-07 01:04:19,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 847 transitions. [2021-12-07 01:04:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-07 01:04:19,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,758 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:19,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:04:19,758 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,759 INFO L85 PathProgramCache]: Analyzing trace with hash 666681880, now seen corresponding path program 1 times [2021-12-07 01:04:19,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646798702] [2021-12-07 01:04:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646798702] [2021-12-07 01:04:19,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646798702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221524075] [2021-12-07 01:04:19,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,781 INFO L87 Difference]: Start difference. First operand 481 states and 847 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,803 INFO L93 Difference]: Finished difference Result 1157 states and 2049 transitions. [2021-12-07 01:04:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-07 01:04:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,808 INFO L225 Difference]: With dead ends: 1157 [2021-12-07 01:04:19,808 INFO L226 Difference]: Without dead ends: 683 [2021-12-07 01:04:19,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,810 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 65 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 202 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-07 01:04:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 681. [2021-12-07 01:04:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 1.7573529411764706) internal successors, (1195), 680 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1195 transitions. [2021-12-07 01:04:19,835 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1195 transitions. Word has length 24 [2021-12-07 01:04:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,835 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 1195 transitions. [2021-12-07 01:04:19,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1195 transitions. [2021-12-07 01:04:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-07 01:04:19,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,837 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:19,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 01:04:19,837 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1186659581, now seen corresponding path program 1 times [2021-12-07 01:04:19,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834971600] [2021-12-07 01:04:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834971600] [2021-12-07 01:04:19,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834971600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904923211] [2021-12-07 01:04:19,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,864 INFO L87 Difference]: Start difference. First operand 681 states and 1195 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,883 INFO L93 Difference]: Finished difference Result 1029 states and 1801 transitions. [2021-12-07 01:04:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-07 01:04:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,888 INFO L225 Difference]: With dead ends: 1029 [2021-12-07 01:04:19,888 INFO L226 Difference]: Without dead ends: 695 [2021-12-07 01:04:19,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,890 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 212 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-12-07 01:04:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2021-12-07 01:04:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.7384393063583814) internal successors, (1203), 692 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1203 transitions. [2021-12-07 01:04:19,910 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1203 transitions. Word has length 25 [2021-12-07 01:04:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,910 INFO L470 AbstractCegarLoop]: Abstraction has 693 states and 1203 transitions. [2021-12-07 01:04:19,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1203 transitions. [2021-12-07 01:04:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-07 01:04:19,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,911 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:19,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:04:19,911 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash -807485125, now seen corresponding path program 1 times [2021-12-07 01:04:19,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:19,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216845313] [2021-12-07 01:04:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:19,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:19,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:19,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216845313] [2021-12-07 01:04:19,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216845313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:19,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:19,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:19,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974684371] [2021-12-07 01:04:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:19,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:19,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,937 INFO L87 Difference]: Start difference. First operand 693 states and 1203 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:19,957 INFO L93 Difference]: Finished difference Result 1289 states and 2269 transitions. [2021-12-07 01:04:19,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:19,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-07 01:04:19,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:19,965 INFO L225 Difference]: With dead ends: 1289 [2021-12-07 01:04:19,965 INFO L226 Difference]: Without dead ends: 1287 [2021-12-07 01:04:19,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:19,966 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 56 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:19,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 167 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2021-12-07 01:04:19,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 965. [2021-12-07 01:04:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 1.704356846473029) internal successors, (1643), 964 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1643 transitions. [2021-12-07 01:04:19,997 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1643 transitions. Word has length 25 [2021-12-07 01:04:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:19,998 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1643 transitions. [2021-12-07 01:04:19,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1643 transitions. [2021-12-07 01:04:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-07 01:04:19,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:19,999 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:19,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:04:19,999 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:20,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1899134269, now seen corresponding path program 1 times [2021-12-07 01:04:20,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:20,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865081084] [2021-12-07 01:04:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:20,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:20,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865081084] [2021-12-07 01:04:20,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865081084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:20,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:20,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:20,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677040654] [2021-12-07 01:04:20,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:20,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:20,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:20,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,019 INFO L87 Difference]: Start difference. First operand 965 states and 1643 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:20,046 INFO L93 Difference]: Finished difference Result 2297 states and 3933 transitions. [2021-12-07 01:04:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-07 01:04:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:20,053 INFO L225 Difference]: With dead ends: 2297 [2021-12-07 01:04:20,053 INFO L226 Difference]: Without dead ends: 1351 [2021-12-07 01:04:20,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,055 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 64 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:20,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 203 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-12-07 01:04:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2021-12-07 01:04:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.6995548961424332) internal successors, (2291), 1348 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2291 transitions. [2021-12-07 01:04:20,085 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2291 transitions. Word has length 25 [2021-12-07 01:04:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:20,085 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 2291 transitions. [2021-12-07 01:04:20,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2291 transitions. [2021-12-07 01:04:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 01:04:20,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:20,087 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:20,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:04:20,087 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:20,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash 737978317, now seen corresponding path program 1 times [2021-12-07 01:04:20,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:20,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801351680] [2021-12-07 01:04:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:20,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:20,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801351680] [2021-12-07 01:04:20,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801351680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:20,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:20,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:20,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659836900] [2021-12-07 01:04:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:20,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:20,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:20,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:20,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,107 INFO L87 Difference]: Start difference. First operand 1349 states and 2291 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:20,129 INFO L93 Difference]: Finished difference Result 2025 states and 3429 transitions. [2021-12-07 01:04:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:20,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-07 01:04:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:20,137 INFO L225 Difference]: With dead ends: 2025 [2021-12-07 01:04:20,137 INFO L226 Difference]: Without dead ends: 1367 [2021-12-07 01:04:20,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,139 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 66 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:20,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 208 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:20,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2021-12-07 01:04:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1365. [2021-12-07 01:04:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.6796187683284458) internal successors, (2291), 1364 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2291 transitions. [2021-12-07 01:04:20,182 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2291 transitions. Word has length 26 [2021-12-07 01:04:20,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:20,182 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2291 transitions. [2021-12-07 01:04:20,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2291 transitions. [2021-12-07 01:04:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 01:04:20,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:20,184 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:20,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:04:20,184 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1256166389, now seen corresponding path program 1 times [2021-12-07 01:04:20,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:20,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443674477] [2021-12-07 01:04:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:20,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:20,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443674477] [2021-12-07 01:04:20,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443674477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:20,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:20,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:20,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312081290] [2021-12-07 01:04:20,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:20,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:20,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:20,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:20,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,202 INFO L87 Difference]: Start difference. First operand 1365 states and 2291 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:20,234 INFO L93 Difference]: Finished difference Result 2505 states and 4277 transitions. [2021-12-07 01:04:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:20,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-07 01:04:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:20,249 INFO L225 Difference]: With dead ends: 2505 [2021-12-07 01:04:20,249 INFO L226 Difference]: Without dead ends: 2503 [2021-12-07 01:04:20,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,251 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 53 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:20,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-12-07 01:04:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 1925. [2021-12-07 01:04:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 1.6398128898128899) internal successors, (3155), 1924 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3155 transitions. [2021-12-07 01:04:20,314 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3155 transitions. Word has length 26 [2021-12-07 01:04:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:20,314 INFO L470 AbstractCegarLoop]: Abstraction has 1925 states and 3155 transitions. [2021-12-07 01:04:20,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3155 transitions. [2021-12-07 01:04:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-07 01:04:20,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:20,317 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:20,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 01:04:20,318 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:20,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1450453005, now seen corresponding path program 1 times [2021-12-07 01:04:20,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:20,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482854844] [2021-12-07 01:04:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:20,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:20,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482854844] [2021-12-07 01:04:20,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482854844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:20,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:20,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:20,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167376421] [2021-12-07 01:04:20,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:20,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:20,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:20,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:20,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,338 INFO L87 Difference]: Start difference. First operand 1925 states and 3155 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:20,381 INFO L93 Difference]: Finished difference Result 4553 states and 7509 transitions. [2021-12-07 01:04:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:20,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-07 01:04:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:20,397 INFO L225 Difference]: With dead ends: 4553 [2021-12-07 01:04:20,397 INFO L226 Difference]: Without dead ends: 2663 [2021-12-07 01:04:20,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,401 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 63 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:20,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 204 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:20,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2021-12-07 01:04:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2661. [2021-12-07 01:04:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2660 states have (on average 1.637218045112782) internal successors, (4355), 2660 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4355 transitions. [2021-12-07 01:04:20,492 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4355 transitions. Word has length 26 [2021-12-07 01:04:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:20,492 INFO L470 AbstractCegarLoop]: Abstraction has 2661 states and 4355 transitions. [2021-12-07 01:04:20,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4355 transitions. [2021-12-07 01:04:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-07 01:04:20,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:20,496 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:20,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:04:20,496 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:20,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash -286238638, now seen corresponding path program 1 times [2021-12-07 01:04:20,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:20,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602848234] [2021-12-07 01:04:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:20,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:20,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602848234] [2021-12-07 01:04:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602848234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:20,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:20,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:20,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267605408] [2021-12-07 01:04:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:20,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:20,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,514 INFO L87 Difference]: Start difference. First operand 2661 states and 4355 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:20,555 INFO L93 Difference]: Finished difference Result 3993 states and 6517 transitions. [2021-12-07 01:04:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-07 01:04:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:20,570 INFO L225 Difference]: With dead ends: 3993 [2021-12-07 01:04:20,570 INFO L226 Difference]: Without dead ends: 2695 [2021-12-07 01:04:20,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,573 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 65 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:20,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 204 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:20,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2021-12-07 01:04:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2693. [2021-12-07 01:04:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2692 states have (on average 1.6177563150074294) internal successors, (4355), 2692 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 4355 transitions. [2021-12-07 01:04:20,642 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 4355 transitions. Word has length 27 [2021-12-07 01:04:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:20,643 INFO L470 AbstractCegarLoop]: Abstraction has 2693 states and 4355 transitions. [2021-12-07 01:04:20,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 4355 transitions. [2021-12-07 01:04:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-07 01:04:20,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:20,645 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:20,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 01:04:20,645 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:20,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2014583952, now seen corresponding path program 1 times [2021-12-07 01:04:20,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:20,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248188865] [2021-12-07 01:04:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:20,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:20,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248188865] [2021-12-07 01:04:20,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248188865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:20,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:20,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:20,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016806325] [2021-12-07 01:04:20,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:20,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:20,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,663 INFO L87 Difference]: Start difference. First operand 2693 states and 4355 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:20,732 INFO L93 Difference]: Finished difference Result 4873 states and 8037 transitions. [2021-12-07 01:04:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-07 01:04:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:20,759 INFO L225 Difference]: With dead ends: 4873 [2021-12-07 01:04:20,760 INFO L226 Difference]: Without dead ends: 4871 [2021-12-07 01:04:20,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,762 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 50 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:20,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:20,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-12-07 01:04:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 3845. [2021-12-07 01:04:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.5741415192507804) internal successors, (6051), 3844 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6051 transitions. [2021-12-07 01:04:20,850 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6051 transitions. Word has length 27 [2021-12-07 01:04:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:20,851 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 6051 transitions. [2021-12-07 01:04:20,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6051 transitions. [2021-12-07 01:04:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-07 01:04:20,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:20,855 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:20,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 01:04:20,855 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:20,855 INFO L85 PathProgramCache]: Analyzing trace with hash 426236050, now seen corresponding path program 1 times [2021-12-07 01:04:20,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:20,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887452536] [2021-12-07 01:04:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:20,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:20,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:20,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887452536] [2021-12-07 01:04:20,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887452536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:20,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:20,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:20,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362145663] [2021-12-07 01:04:20,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:20,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:20,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,872 INFO L87 Difference]: Start difference. First operand 3845 states and 6051 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:20,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:20,922 INFO L93 Difference]: Finished difference Result 9033 states and 14309 transitions. [2021-12-07 01:04:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:20,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-07 01:04:20,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:20,943 INFO L225 Difference]: With dead ends: 9033 [2021-12-07 01:04:20,943 INFO L226 Difference]: Without dead ends: 5255 [2021-12-07 01:04:20,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:20,947 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 62 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:20,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 205 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2021-12-07 01:04:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 5253. [2021-12-07 01:04:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 1.5725437928408226) internal successors, (8259), 5252 states have internal predecessors, (8259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 8259 transitions. [2021-12-07 01:04:21,069 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 8259 transitions. Word has length 27 [2021-12-07 01:04:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:21,069 INFO L470 AbstractCegarLoop]: Abstraction has 5253 states and 8259 transitions. [2021-12-07 01:04:21,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 8259 transitions. [2021-12-07 01:04:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:04:21,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:21,073 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:21,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 01:04:21,073 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:21,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:21,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1972192830, now seen corresponding path program 1 times [2021-12-07 01:04:21,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:21,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753949102] [2021-12-07 01:04:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:21,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:21,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:21,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753949102] [2021-12-07 01:04:21,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753949102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:21,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:21,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:21,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667240293] [2021-12-07 01:04:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:21,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:21,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:21,089 INFO L87 Difference]: Start difference. First operand 5253 states and 8259 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:21,133 INFO L93 Difference]: Finished difference Result 7881 states and 12357 transitions. [2021-12-07 01:04:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:21,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 01:04:21,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:21,140 INFO L225 Difference]: With dead ends: 7881 [2021-12-07 01:04:21,140 INFO L226 Difference]: Without dead ends: 5319 [2021-12-07 01:04:21,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:21,144 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 64 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:21,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 200 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2021-12-07 01:04:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5317. [2021-12-07 01:04:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 5316 states have (on average 1.5536117381489842) internal successors, (8259), 5316 states have internal predecessors, (8259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 8259 transitions. [2021-12-07 01:04:21,246 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 8259 transitions. Word has length 28 [2021-12-07 01:04:21,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:21,246 INFO L470 AbstractCegarLoop]: Abstraction has 5317 states and 8259 transitions. [2021-12-07 01:04:21,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 8259 transitions. [2021-12-07 01:04:21,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:04:21,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:21,250 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:21,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 01:04:21,251 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:21,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash 328629760, now seen corresponding path program 1 times [2021-12-07 01:04:21,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:21,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891600434] [2021-12-07 01:04:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:21,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:21,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:21,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891600434] [2021-12-07 01:04:21,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891600434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:21,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:21,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:21,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267899758] [2021-12-07 01:04:21,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:21,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:21,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:21,267 INFO L87 Difference]: Start difference. First operand 5317 states and 8259 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:21,335 INFO L93 Difference]: Finished difference Result 9481 states and 15045 transitions. [2021-12-07 01:04:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 01:04:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:21,346 INFO L225 Difference]: With dead ends: 9481 [2021-12-07 01:04:21,346 INFO L226 Difference]: Without dead ends: 9479 [2021-12-07 01:04:21,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:21,348 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 47 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:21,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9479 states. [2021-12-07 01:04:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9479 to 7685. [2021-12-07 01:04:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7684 states have (on average 1.5079385736595523) internal successors, (11587), 7684 states have internal predecessors, (11587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 11587 transitions. [2021-12-07 01:04:21,476 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 11587 transitions. Word has length 28 [2021-12-07 01:04:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:21,476 INFO L470 AbstractCegarLoop]: Abstraction has 7685 states and 11587 transitions. [2021-12-07 01:04:21,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 11587 transitions. [2021-12-07 01:04:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:04:21,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:21,484 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:21,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 01:04:21,484 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1259718142, now seen corresponding path program 1 times [2021-12-07 01:04:21,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:21,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795583718] [2021-12-07 01:04:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:21,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:21,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:21,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795583718] [2021-12-07 01:04:21,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795583718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:21,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:21,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:21,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463567880] [2021-12-07 01:04:21,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:21,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:21,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:21,502 INFO L87 Difference]: Start difference. First operand 7685 states and 11587 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:21,579 INFO L93 Difference]: Finished difference Result 17929 states and 27205 transitions. [2021-12-07 01:04:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 01:04:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:21,592 INFO L225 Difference]: With dead ends: 17929 [2021-12-07 01:04:21,592 INFO L226 Difference]: Without dead ends: 10375 [2021-12-07 01:04:21,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:21,600 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 61 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:21,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 206 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10375 states. [2021-12-07 01:04:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10375 to 10373. [2021-12-07 01:04:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10373 states, 10372 states have (on average 1.5058812186656383) internal successors, (15619), 10372 states have internal predecessors, (15619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10373 states to 10373 states and 15619 transitions. [2021-12-07 01:04:21,784 INFO L78 Accepts]: Start accepts. Automaton has 10373 states and 15619 transitions. Word has length 28 [2021-12-07 01:04:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:21,784 INFO L470 AbstractCegarLoop]: Abstraction has 10373 states and 15619 transitions. [2021-12-07 01:04:21,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,785 INFO L276 IsEmpty]: Start isEmpty. Operand 10373 states and 15619 transitions. [2021-12-07 01:04:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-07 01:04:21,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:21,792 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:21,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 01:04:21,792 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:21,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:21,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1597802407, now seen corresponding path program 1 times [2021-12-07 01:04:21,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395737953] [2021-12-07 01:04:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:21,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:21,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:21,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395737953] [2021-12-07 01:04:21,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395737953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:21,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:21,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:21,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57033567] [2021-12-07 01:04:21,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:21,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:21,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:21,808 INFO L87 Difference]: Start difference. First operand 10373 states and 15619 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:21,888 INFO L93 Difference]: Finished difference Result 15561 states and 23365 transitions. [2021-12-07 01:04:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:21,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-07 01:04:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:21,905 INFO L225 Difference]: With dead ends: 15561 [2021-12-07 01:04:21,905 INFO L226 Difference]: Without dead ends: 10503 [2021-12-07 01:04:21,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:21,912 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 63 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:21,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 196 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10503 states. [2021-12-07 01:04:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10503 to 10501. [2021-12-07 01:04:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 10500 states have (on average 1.4875238095238095) internal successors, (15619), 10500 states have internal predecessors, (15619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 15619 transitions. [2021-12-07 01:04:22,108 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 15619 transitions. Word has length 29 [2021-12-07 01:04:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:22,108 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 15619 transitions. [2021-12-07 01:04:22,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 15619 transitions. [2021-12-07 01:04:22,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-07 01:04:22,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:22,117 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:22,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 01:04:22,117 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:22,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash -396342299, now seen corresponding path program 1 times [2021-12-07 01:04:22,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:22,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665070457] [2021-12-07 01:04:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:22,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:22,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:22,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665070457] [2021-12-07 01:04:22,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665070457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:22,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:22,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:22,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794416570] [2021-12-07 01:04:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:22,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:22,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:22,133 INFO L87 Difference]: Start difference. First operand 10501 states and 15619 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:22,249 INFO L93 Difference]: Finished difference Result 18441 states and 28037 transitions. [2021-12-07 01:04:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:22,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-07 01:04:22,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:22,269 INFO L225 Difference]: With dead ends: 18441 [2021-12-07 01:04:22,270 INFO L226 Difference]: Without dead ends: 18439 [2021-12-07 01:04:22,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:22,273 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 44 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:22,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 159 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18439 states. [2021-12-07 01:04:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18439 to 15365. [2021-12-07 01:04:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15365 states, 15364 states have (on average 1.4414865920333246) internal successors, (22147), 15364 states have internal predecessors, (22147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15365 states to 15365 states and 22147 transitions. [2021-12-07 01:04:22,470 INFO L78 Accepts]: Start accepts. Automaton has 15365 states and 22147 transitions. Word has length 29 [2021-12-07 01:04:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:22,470 INFO L470 AbstractCegarLoop]: Abstraction has 15365 states and 22147 transitions. [2021-12-07 01:04:22,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15365 states and 22147 transitions. [2021-12-07 01:04:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-07 01:04:22,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:22,482 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:22,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 01:04:22,482 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:22,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1984690201, now seen corresponding path program 1 times [2021-12-07 01:04:22,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:22,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796765757] [2021-12-07 01:04:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:22,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:22,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796765757] [2021-12-07 01:04:22,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796765757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:22,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:22,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:22,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094921502] [2021-12-07 01:04:22,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:22,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:22,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:22,497 INFO L87 Difference]: Start difference. First operand 15365 states and 22147 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:22,672 INFO L93 Difference]: Finished difference Result 35593 states and 51589 transitions. [2021-12-07 01:04:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:22,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-07 01:04:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:22,692 INFO L225 Difference]: With dead ends: 35593 [2021-12-07 01:04:22,692 INFO L226 Difference]: Without dead ends: 20487 [2021-12-07 01:04:22,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:22,703 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 60 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:22,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 207 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20487 states. [2021-12-07 01:04:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20487 to 20485. [2021-12-07 01:04:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20485 states, 20484 states have (on average 1.4373657488771725) internal successors, (29443), 20484 states have internal predecessors, (29443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20485 states to 20485 states and 29443 transitions. [2021-12-07 01:04:23,009 INFO L78 Accepts]: Start accepts. Automaton has 20485 states and 29443 transitions. Word has length 29 [2021-12-07 01:04:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:23,009 INFO L470 AbstractCegarLoop]: Abstraction has 20485 states and 29443 transitions. [2021-12-07 01:04:23,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20485 states and 29443 transitions. [2021-12-07 01:04:23,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:04:23,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:23,023 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:23,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 01:04:23,023 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash 598505399, now seen corresponding path program 1 times [2021-12-07 01:04:23,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:23,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050604913] [2021-12-07 01:04:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:23,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:23,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:23,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050604913] [2021-12-07 01:04:23,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050604913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:23,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:23,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:23,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552525197] [2021-12-07 01:04:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:23,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:23,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:23,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:23,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:23,039 INFO L87 Difference]: Start difference. First operand 20485 states and 29443 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:23,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:23,202 INFO L93 Difference]: Finished difference Result 30729 states and 44037 transitions. [2021-12-07 01:04:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:23,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-07 01:04:23,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:23,216 INFO L225 Difference]: With dead ends: 30729 [2021-12-07 01:04:23,216 INFO L226 Difference]: Without dead ends: 20743 [2021-12-07 01:04:23,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:23,225 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 62 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:23,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 192 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:23,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20743 states. [2021-12-07 01:04:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20743 to 20741. [2021-12-07 01:04:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20741 states, 20740 states have (on average 1.4196239151398264) internal successors, (29443), 20740 states have internal predecessors, (29443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20741 states to 20741 states and 29443 transitions. [2021-12-07 01:04:23,488 INFO L78 Accepts]: Start accepts. Automaton has 20741 states and 29443 transitions. Word has length 30 [2021-12-07 01:04:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:23,488 INFO L470 AbstractCegarLoop]: Abstraction has 20741 states and 29443 transitions. [2021-12-07 01:04:23,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 20741 states and 29443 transitions. [2021-12-07 01:04:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:04:23,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:23,498 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:23,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-07 01:04:23,498 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1395639307, now seen corresponding path program 1 times [2021-12-07 01:04:23,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:23,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676171250] [2021-12-07 01:04:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:23,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:23,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:23,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676171250] [2021-12-07 01:04:23,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676171250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:23,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:23,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:23,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732876303] [2021-12-07 01:04:23,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:23,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:23,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:23,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:23,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:23,511 INFO L87 Difference]: Start difference. First operand 20741 states and 29443 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:23,655 INFO L93 Difference]: Finished difference Result 35849 states and 51973 transitions. [2021-12-07 01:04:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:23,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-07 01:04:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:23,681 INFO L225 Difference]: With dead ends: 35849 [2021-12-07 01:04:23,681 INFO L226 Difference]: Without dead ends: 35847 [2021-12-07 01:04:23,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:23,689 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 41 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:23,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35847 states. [2021-12-07 01:04:23,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35847 to 30725. [2021-12-07 01:04:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30725 states, 30724 states have (on average 1.3749186303866685) internal successors, (42243), 30724 states have internal predecessors, (42243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30725 states to 30725 states and 42243 transitions. [2021-12-07 01:04:24,047 INFO L78 Accepts]: Start accepts. Automaton has 30725 states and 42243 transitions. Word has length 30 [2021-12-07 01:04:24,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:24,047 INFO L470 AbstractCegarLoop]: Abstraction has 30725 states and 42243 transitions. [2021-12-07 01:04:24,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:24,048 INFO L276 IsEmpty]: Start isEmpty. Operand 30725 states and 42243 transitions. [2021-12-07 01:04:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:04:24,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:24,065 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:24,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-07 01:04:24,066 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:24,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1310980087, now seen corresponding path program 1 times [2021-12-07 01:04:24,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:24,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803867873] [2021-12-07 01:04:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:24,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:24,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:24,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803867873] [2021-12-07 01:04:24,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803867873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:24,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:24,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:24,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472477564] [2021-12-07 01:04:24,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:24,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:24,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:24,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:24,082 INFO L87 Difference]: Start difference. First operand 30725 states and 42243 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:24,405 INFO L93 Difference]: Finished difference Result 70665 states and 97541 transitions. [2021-12-07 01:04:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-07 01:04:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:24,441 INFO L225 Difference]: With dead ends: 70665 [2021-12-07 01:04:24,441 INFO L226 Difference]: Without dead ends: 40455 [2021-12-07 01:04:24,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:24,463 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 59 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:24,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 208 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40455 states. [2021-12-07 01:04:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40455 to 40453. [2021-12-07 01:04:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40453 states, 40452 states have (on average 1.367027588252744) internal successors, (55299), 40452 states have internal predecessors, (55299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:25,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40453 states to 40453 states and 55299 transitions. [2021-12-07 01:04:25,096 INFO L78 Accepts]: Start accepts. Automaton has 40453 states and 55299 transitions. Word has length 30 [2021-12-07 01:04:25,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:25,096 INFO L470 AbstractCegarLoop]: Abstraction has 40453 states and 55299 transitions. [2021-12-07 01:04:25,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 40453 states and 55299 transitions. [2021-12-07 01:04:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 01:04:25,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:25,109 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:25,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-07 01:04:25,110 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash -314930436, now seen corresponding path program 1 times [2021-12-07 01:04:25,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:25,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395498786] [2021-12-07 01:04:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:25,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:25,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:25,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395498786] [2021-12-07 01:04:25,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395498786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:25,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:25,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:25,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378189381] [2021-12-07 01:04:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:25,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:25,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:25,125 INFO L87 Difference]: Start difference. First operand 40453 states and 55299 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:25,344 INFO L93 Difference]: Finished difference Result 60681 states and 82693 transitions. [2021-12-07 01:04:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:25,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-07 01:04:25,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:25,376 INFO L225 Difference]: With dead ends: 60681 [2021-12-07 01:04:25,376 INFO L226 Difference]: Without dead ends: 40967 [2021-12-07 01:04:25,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:25,390 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 61 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:25,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40967 states. [2021-12-07 01:04:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40967 to 40965. [2021-12-07 01:04:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40965 states, 40964 states have (on average 1.3499414119714872) internal successors, (55299), 40964 states have internal predecessors, (55299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:25,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40965 states to 40965 states and 55299 transitions. [2021-12-07 01:04:25,952 INFO L78 Accepts]: Start accepts. Automaton has 40965 states and 55299 transitions. Word has length 31 [2021-12-07 01:04:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:25,952 INFO L470 AbstractCegarLoop]: Abstraction has 40965 states and 55299 transitions. [2021-12-07 01:04:25,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:25,952 INFO L276 IsEmpty]: Start isEmpty. Operand 40965 states and 55299 transitions. [2021-12-07 01:04:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 01:04:25,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:25,966 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:25,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-07 01:04:25,966 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1985892154, now seen corresponding path program 1 times [2021-12-07 01:04:25,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:25,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156785877] [2021-12-07 01:04:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:25,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:25,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:25,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156785877] [2021-12-07 01:04:25,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156785877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:25,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:25,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:25,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005320833] [2021-12-07 01:04:25,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:25,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:25,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:25,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:25,980 INFO L87 Difference]: Start difference. First operand 40965 states and 55299 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:26,379 INFO L93 Difference]: Finished difference Result 119817 states and 159749 transitions. [2021-12-07 01:04:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:26,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-07 01:04:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:26,447 INFO L225 Difference]: With dead ends: 119817 [2021-12-07 01:04:26,447 INFO L226 Difference]: Without dead ends: 79879 [2021-12-07 01:04:26,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:26,475 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 59 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:26,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 175 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:26,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79879 states. [2021-12-07 01:04:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79879 to 79877. [2021-12-07 01:04:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79877 states, 79876 states have (on average 1.3076643797886724) internal successors, (104451), 79876 states have internal predecessors, (104451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79877 states to 79877 states and 104451 transitions. [2021-12-07 01:04:27,592 INFO L78 Accepts]: Start accepts. Automaton has 79877 states and 104451 transitions. Word has length 31 [2021-12-07 01:04:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:27,592 INFO L470 AbstractCegarLoop]: Abstraction has 79877 states and 104451 transitions. [2021-12-07 01:04:27,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 79877 states and 104451 transitions. [2021-12-07 01:04:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 01:04:27,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:27,627 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:27,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-07 01:04:27,627 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:27,628 INFO L85 PathProgramCache]: Analyzing trace with hash -720727240, now seen corresponding path program 1 times [2021-12-07 01:04:27,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:27,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056960905] [2021-12-07 01:04:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:27,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:27,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:27,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056960905] [2021-12-07 01:04:27,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056960905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:27,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:27,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:27,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074466919] [2021-12-07 01:04:27,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:27,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:27,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:27,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:27,642 INFO L87 Difference]: Start difference. First operand 79877 states and 104451 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:28,257 INFO L93 Difference]: Finished difference Result 88073 states and 118789 transitions. [2021-12-07 01:04:28,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:28,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-07 01:04:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:28,340 INFO L225 Difference]: With dead ends: 88073 [2021-12-07 01:04:28,340 INFO L226 Difference]: Without dead ends: 88071 [2021-12-07 01:04:28,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:28,360 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 38 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:28,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 202 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88071 states. [2021-12-07 01:04:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88071 to 79877. [2021-12-07 01:04:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79877 states, 79876 states have (on average 1.2948445089889329) internal successors, (103427), 79876 states have internal predecessors, (103427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79877 states to 79877 states and 103427 transitions. [2021-12-07 01:04:29,512 INFO L78 Accepts]: Start accepts. Automaton has 79877 states and 103427 transitions. Word has length 31 [2021-12-07 01:04:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:29,512 INFO L470 AbstractCegarLoop]: Abstraction has 79877 states and 103427 transitions. [2021-12-07 01:04:29,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 79877 states and 103427 transitions. [2021-12-07 01:04:29,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 01:04:29,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:29,541 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:29,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-07 01:04:29,541 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1433330092, now seen corresponding path program 1 times [2021-12-07 01:04:29,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:29,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993174313] [2021-12-07 01:04:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:29,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:29,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:29,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993174313] [2021-12-07 01:04:29,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993174313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:29,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:29,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:29,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565492836] [2021-12-07 01:04:29,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:29,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:29,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:29,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:29,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:29,557 INFO L87 Difference]: Start difference. First operand 79877 states and 103427 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:30,335 INFO L93 Difference]: Finished difference Result 134153 states and 176133 transitions. [2021-12-07 01:04:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:30,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-07 01:04:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:30,442 INFO L225 Difference]: With dead ends: 134153 [2021-12-07 01:04:30,442 INFO L226 Difference]: Without dead ends: 134151 [2021-12-07 01:04:30,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:30,462 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 35 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:30,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 153 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134151 states. [2021-12-07 01:04:31,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134151 to 121861. [2021-12-07 01:04:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121861 states, 121860 states have (on average 1.2604874446085672) internal successors, (153603), 121860 states have internal predecessors, (153603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:31,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121861 states to 121861 states and 153603 transitions. [2021-12-07 01:04:31,972 INFO L78 Accepts]: Start accepts. Automaton has 121861 states and 153603 transitions. Word has length 32 [2021-12-07 01:04:31,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:31,972 INFO L470 AbstractCegarLoop]: Abstraction has 121861 states and 153603 transitions. [2021-12-07 01:04:31,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 121861 states and 153603 transitions. [2021-12-07 01:04:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 01:04:32,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:32,031 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:32,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-07 01:04:32,032 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash -155017810, now seen corresponding path program 1 times [2021-12-07 01:04:32,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:32,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869681271] [2021-12-07 01:04:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:32,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:32,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:32,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869681271] [2021-12-07 01:04:32,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869681271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:32,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:32,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:32,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036335224] [2021-12-07 01:04:32,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:32,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:32,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:32,046 INFO L87 Difference]: Start difference. First operand 121861 states and 153603 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:33,358 INFO L93 Difference]: Finished difference Result 277513 states and 350213 transitions. [2021-12-07 01:04:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:33,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-07 01:04:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:33,478 INFO L225 Difference]: With dead ends: 277513 [2021-12-07 01:04:33,478 INFO L226 Difference]: Without dead ends: 156679 [2021-12-07 01:04:33,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:33,527 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 57 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:33,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 210 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156679 states. [2021-12-07 01:04:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156679 to 156677. [2021-12-07 01:04:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156677 states, 156676 states have (on average 1.2418175087441599) internal successors, (194563), 156676 states have internal predecessors, (194563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156677 states to 156677 states and 194563 transitions. [2021-12-07 01:04:35,727 INFO L78 Accepts]: Start accepts. Automaton has 156677 states and 194563 transitions. Word has length 32 [2021-12-07 01:04:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:35,727 INFO L470 AbstractCegarLoop]: Abstraction has 156677 states and 194563 transitions. [2021-12-07 01:04:35,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 156677 states and 194563 transitions. [2021-12-07 01:04:35,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 01:04:35,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:35,789 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:35,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-07 01:04:35,789 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1483775695, now seen corresponding path program 1 times [2021-12-07 01:04:35,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:35,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105671743] [2021-12-07 01:04:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:35,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:35,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:35,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105671743] [2021-12-07 01:04:35,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105671743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:35,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:35,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:35,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054371451] [2021-12-07 01:04:35,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:35,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:35,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:35,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:35,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:35,805 INFO L87 Difference]: Start difference. First operand 156677 states and 194563 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:36,985 INFO L93 Difference]: Finished difference Result 236553 states and 293893 transitions. [2021-12-07 01:04:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:36,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-07 01:04:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:37,131 INFO L225 Difference]: With dead ends: 236553 [2021-12-07 01:04:37,131 INFO L226 Difference]: Without dead ends: 159751 [2021-12-07 01:04:37,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:37,177 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 59 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:37,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 180 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:37,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159751 states. [2021-12-07 01:04:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159751 to 159749. [2021-12-07 01:04:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159749 states, 159748 states have (on average 1.2307571925783107) internal successors, (196611), 159748 states have internal predecessors, (196611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159749 states to 159749 states and 196611 transitions. [2021-12-07 01:04:39,422 INFO L78 Accepts]: Start accepts. Automaton has 159749 states and 196611 transitions. Word has length 33 [2021-12-07 01:04:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:39,422 INFO L470 AbstractCegarLoop]: Abstraction has 159749 states and 196611 transitions. [2021-12-07 01:04:39,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 159749 states and 196611 transitions. [2021-12-07 01:04:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 01:04:39,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:39,488 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:39,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-07 01:04:39,488 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash -510369011, now seen corresponding path program 1 times [2021-12-07 01:04:39,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:39,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224736557] [2021-12-07 01:04:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:39,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:39,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:39,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224736557] [2021-12-07 01:04:39,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224736557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:39,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:39,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:39,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432611756] [2021-12-07 01:04:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:39,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:39,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:39,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:39,503 INFO L87 Difference]: Start difference. First operand 159749 states and 196611 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:41,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:41,314 INFO L93 Difference]: Finished difference Result 262153 states and 323589 transitions. [2021-12-07 01:04:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:41,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-07 01:04:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:41,586 INFO L225 Difference]: With dead ends: 262153 [2021-12-07 01:04:41,586 INFO L226 Difference]: Without dead ends: 262151 [2021-12-07 01:04:41,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:41,626 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 32 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:41,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262151 states. [2021-12-07 01:04:44,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262151 to 245765. [2021-12-07 01:04:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245765 states, 245764 states have (on average 1.1999926759004573) internal successors, (294915), 245764 states have internal predecessors, (294915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245765 states to 245765 states and 294915 transitions. [2021-12-07 01:04:44,809 INFO L78 Accepts]: Start accepts. Automaton has 245765 states and 294915 transitions. Word has length 33 [2021-12-07 01:04:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 245765 states and 294915 transitions. [2021-12-07 01:04:44,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 245765 states and 294915 transitions. [2021-12-07 01:04:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 01:04:44,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:44,931 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:44,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-07 01:04:44,931 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:44,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2098716913, now seen corresponding path program 1 times [2021-12-07 01:04:44,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:44,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673938483] [2021-12-07 01:04:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:44,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:44,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:44,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673938483] [2021-12-07 01:04:44,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673938483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:44,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:44,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:44,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908497889] [2021-12-07 01:04:44,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:44,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:44,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:44,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:44,946 INFO L87 Difference]: Start difference. First operand 245765 states and 294915 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:47,421 INFO L93 Difference]: Finished difference Result 552969 states and 659461 transitions. [2021-12-07 01:04:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-07 01:04:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:47,690 INFO L225 Difference]: With dead ends: 552969 [2021-12-07 01:04:47,690 INFO L226 Difference]: Without dead ends: 311303 [2021-12-07 01:04:47,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:47,783 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 56 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:47,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 211 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:47,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311303 states. [2021-12-07 01:04:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311303 to 311301. [2021-12-07 01:04:51,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311301 states, 311300 states have (on average 1.1710472213299068) internal successors, (364547), 311300 states have internal predecessors, (364547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311301 states to 311301 states and 364547 transitions. [2021-12-07 01:04:51,946 INFO L78 Accepts]: Start accepts. Automaton has 311301 states and 364547 transitions. Word has length 33 [2021-12-07 01:04:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:51,946 INFO L470 AbstractCegarLoop]: Abstraction has 311301 states and 364547 transitions. [2021-12-07 01:04:51,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 311301 states and 364547 transitions. [2021-12-07 01:04:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 01:04:52,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:52,230 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:52,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-07 01:04:52,230 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:52,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:52,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1358645987, now seen corresponding path program 1 times [2021-12-07 01:04:52,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:52,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289290904] [2021-12-07 01:04:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:52,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:52,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:52,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289290904] [2021-12-07 01:04:52,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289290904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:52,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:52,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:52,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916422749] [2021-12-07 01:04:52,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:52,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:52,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:52,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:52,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:52,248 INFO L87 Difference]: Start difference. First operand 311301 states and 364547 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:54,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:54,519 INFO L93 Difference]: Finished difference Result 466953 states and 544773 transitions. [2021-12-07 01:04:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:54,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 01:04:54,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:54,860 INFO L225 Difference]: With dead ends: 466953 [2021-12-07 01:04:54,860 INFO L226 Difference]: Without dead ends: 315399 [2021-12-07 01:04:54,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:54,958 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:54,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315399 states. [2021-12-07 01:04:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315399 to 315397. [2021-12-07 01:04:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315397 states, 315396 states have (on average 1.155839008738221) internal successors, (364547), 315396 states have internal predecessors, (364547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315397 states to 315397 states and 364547 transitions. [2021-12-07 01:04:59,458 INFO L78 Accepts]: Start accepts. Automaton has 315397 states and 364547 transitions. Word has length 34 [2021-12-07 01:04:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:04:59,458 INFO L470 AbstractCegarLoop]: Abstraction has 315397 states and 364547 transitions. [2021-12-07 01:04:59,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:04:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 315397 states and 364547 transitions. [2021-12-07 01:04:59,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 01:04:59,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:04:59,768 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:04:59,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-07 01:04:59,769 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:04:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:04:59,769 INFO L85 PathProgramCache]: Analyzing trace with hash -635498719, now seen corresponding path program 1 times [2021-12-07 01:04:59,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:04:59,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843926762] [2021-12-07 01:04:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:04:59,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:04:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:04:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:04:59,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:04:59,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843926762] [2021-12-07 01:04:59,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843926762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:04:59,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:04:59,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:04:59,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783201131] [2021-12-07 01:04:59,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:04:59,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:04:59,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:04:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:04:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:04:59,784 INFO L87 Difference]: Start difference. First operand 315397 states and 364547 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:05:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:03,325 INFO L93 Difference]: Finished difference Result 507911 states and 581636 transitions. [2021-12-07 01:05:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:05:03,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 01:05:03,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:03,880 INFO L225 Difference]: With dead ends: 507911 [2021-12-07 01:05:03,880 INFO L226 Difference]: Without dead ends: 507909 [2021-12-07 01:05:03,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:05:03,945 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 28 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:03,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 148 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:05:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507909 states. [2021-12-07 01:05:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507909 to 491525. [2021-12-07 01:05:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491525 states, 491524 states have (on average 1.1333302137840675) internal successors, (557059), 491524 states have internal predecessors, (557059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:05:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491525 states to 491525 states and 557059 transitions. [2021-12-07 01:05:10,460 INFO L78 Accepts]: Start accepts. Automaton has 491525 states and 557059 transitions. Word has length 34 [2021-12-07 01:05:10,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:10,460 INFO L470 AbstractCegarLoop]: Abstraction has 491525 states and 557059 transitions. [2021-12-07 01:05:10,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:05:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 491525 states and 557059 transitions. [2021-12-07 01:05:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 01:05:10,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:10,728 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:05:10,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-07 01:05:10,728 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2071120675, now seen corresponding path program 1 times [2021-12-07 01:05:10,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:10,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427215119] [2021-12-07 01:05:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:10,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:05:10,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:10,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427215119] [2021-12-07 01:05:10,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427215119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:10,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:05:10,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:05:10,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053981860] [2021-12-07 01:05:10,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:10,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:05:10,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:05:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:05:10,956 INFO L87 Difference]: Start difference. First operand 491525 states and 557059 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:05:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:05:15,573 INFO L93 Difference]: Finished difference Result 1097733 states and 1228803 transitions. [2021-12-07 01:05:15,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:05:15,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 01:05:15,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:05:15,573 INFO L225 Difference]: With dead ends: 1097733 [2021-12-07 01:05:15,573 INFO L226 Difference]: Without dead ends: 0 [2021-12-07 01:05:15,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:05:15,970 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 54 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:05:15,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 210 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:05:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-07 01:05:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-07 01:05:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:05:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-07 01:05:15,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-12-07 01:05:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:15,971 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-07 01:05:15,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:05:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-07 01:05:15,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-07 01:05:15,973 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 01:05:15,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-07 01:05:15,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-07 01:05:16,000 INFO L861 garLoopResultBuilder]: At program point L217(lines 7 221) the Hoare annotation is: true [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L201-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L202(line 202) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L186-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L120-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L104-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L861 garLoopResultBuilder]: At program point L220(lines 6 221) the Hoare annotation is: true [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L187(line 187) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L88(lines 88 90) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L55(lines 55 57) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L88-2(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,001 INFO L858 garLoopResultBuilder]: For program point L171-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L172(line 172) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L156-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L206-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L140-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L157(line 157) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L207(line 207) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L108-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L191-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L92-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L192(line 192) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point L176-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,002 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L161-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L128-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L861 garLoopResultBuilder]: At program point L211-1(lines 53 216) the Hoare annotation is: true [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L162(line 162) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L96-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L854 garLoopResultBuilder]: At program point L212-1(lines 7 221) the Hoare annotation is: false [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L146-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L147(line 147) no Hoare annotation was computed. [2021-12-07 01:05:16,003 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 219) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point L132-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point L116-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 53 216) no Hoare annotation was computed. [2021-12-07 01:05:16,004 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-12-07 01:05:16,007 INFO L732 BasicCegarLoop]: Path program 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] [2021-12-07 01:05:16,009 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:05:16,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:05:16 BoogieIcfgContainer [2021-12-07 01:05:16,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:05:16,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:05:16,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:05:16,017 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:05:16,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:04:18" (3/4) ... [2021-12-07 01:05:16,020 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-07 01:05:16,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-07 01:05:16,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-07 01:05:16,030 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-07 01:05:16,030 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-07 01:05:16,062 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:05:16,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:05:16,062 INFO L158 Benchmark]: Toolchain (without parser) took 57714.14ms. Allocated memory was 109.1MB in the beginning and 13.0GB in the end (delta: 12.9GB). Free memory was 66.5MB in the beginning and 9.7GB in the end (delta: -9.6GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. [2021-12-07 01:05:16,062 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:05:16,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.85ms. Allocated memory is still 109.1MB. Free memory was 66.4MB in the beginning and 85.1MB in the end (delta: -18.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-12-07 01:05:16,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.25ms. Allocated memory is still 109.1MB. Free memory was 85.1MB in the beginning and 83.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:05:16,063 INFO L158 Benchmark]: Boogie Preprocessor took 24.49ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:05:16,063 INFO L158 Benchmark]: RCFGBuilder took 285.99ms. Allocated memory is still 109.1MB. Free memory was 81.8MB in the beginning and 74.8MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-07 01:05:16,064 INFO L158 Benchmark]: TraceAbstraction took 57132.81ms. Allocated memory was 109.1MB in the beginning and 13.0GB in the end (delta: 12.9GB). Free memory was 74.4MB in the beginning and 9.7GB in the end (delta: -9.6GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. [2021-12-07 01:05:16,064 INFO L158 Benchmark]: Witness Printer took 44.97ms. Allocated memory is still 13.0GB. Free memory was 9.7GB in the beginning and 9.7GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-07 01:05:16,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.85ms. Allocated memory is still 109.1MB. Free memory was 66.4MB in the beginning and 85.1MB in the end (delta: -18.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.25ms. Allocated memory is still 109.1MB. Free memory was 85.1MB in the beginning and 83.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.49ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 81.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.99ms. Allocated memory is still 109.1MB. Free memory was 81.8MB in the beginning and 74.8MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 57132.81ms. Allocated memory was 109.1MB in the beginning and 13.0GB in the end (delta: 12.9GB). Free memory was 74.4MB in the beginning and 9.7GB in the end (delta: -9.6GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. * Witness Printer took 44.97ms. Allocated memory is still 13.0GB. Free memory was 9.7GB in the beginning and 9.7GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 219]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.1s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.4s, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2248 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2248 mSDsluCounter, 7412 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2995 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 207 IncrementalHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 4417 mSDtfsCounter, 207 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491525occurred in iteration=38, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 30.2s AutomataMinimizationTime, 39 MinimizatonAttempts, 65578 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16393 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 1078 NumberOfCodeBlocks, 1078 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1039 ConstructedInterpolants, 0 QuantifiedInterpolants, 2313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-07 01:05:16,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c6008a0-6570-4159-b84b-6a77f2b5c440/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE