./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc --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 50a84ef689ee1e06fdacd72e7701ff2c38527734cebc573231d698f970fe37fd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:13:27,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:13:27,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:13:27,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:13:27,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:13:27,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:13:27,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:13:27,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:13:27,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:13:27,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:13:27,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:13:27,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:13:27,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:13:27,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:13:27,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:13:27,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:13:27,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:13:27,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:13:27,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:13:27,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:13:27,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:13:27,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:13:27,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:13:27,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:13:27,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:13:27,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:13:27,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:13:27,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:13:27,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:13:27,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:13:27,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:13:27,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:13:27,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:13:27,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:13:27,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:13:27,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:13:27,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:13:27,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:13:27,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:13:27,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:13:27,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:13:27,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:13:27,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:13:27,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:13:27,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:13:27,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:13:27,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:13:27,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:13:27,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:13:27,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:13:27,740 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:13:27,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:13:27,741 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:13:27,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:13:27,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:13:27,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:13:27,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:13:27,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:13:27,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:13:27,744 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:13:27,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:13:27,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:13:27,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:13:27,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:13:27,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:13:27,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:13:27,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:27,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:13:27,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:13:27,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:13:27,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:13:27,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:13:27,748 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:13:27,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:13:27,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:13:27,749 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_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50a84ef689ee1e06fdacd72e7701ff2c38527734cebc573231d698f970fe37fd [2022-11-02 20:13:28,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:13:28,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:13:28,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:13:28,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:13:28,145 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:13:28,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/eca-rers2012/Problem03_label40.c [2022-11-02 20:13:28,229 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/data/9f91207cf/546c9f1c8d00490da12e388e5dfbce24/FLAG02e3a2780 [2022-11-02 20:13:28,962 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:13:28,963 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/sv-benchmarks/c/eca-rers2012/Problem03_label40.c [2022-11-02 20:13:28,980 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/data/9f91207cf/546c9f1c8d00490da12e388e5dfbce24/FLAG02e3a2780 [2022-11-02 20:13:29,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/data/9f91207cf/546c9f1c8d00490da12e388e5dfbce24 [2022-11-02 20:13:29,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:13:29,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:13:29,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:29,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:13:29,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:13:29,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:29" (1/1) ... [2022-11-02 20:13:29,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d34c4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:29, skipping insertion in model container [2022-11-02 20:13:29,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:13:29" (1/1) ... [2022-11-02 20:13:29,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:13:29,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:13:30,166 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_63130413-7172-4d19-89e8-418da625b954/sv-benchmarks/c/eca-rers2012/Problem03_label40.c[59070,59083] [2022-11-02 20:13:30,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:30,237 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:13:30,536 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_63130413-7172-4d19-89e8-418da625b954/sv-benchmarks/c/eca-rers2012/Problem03_label40.c[59070,59083] [2022-11-02 20:13:30,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:13:30,574 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:13:30,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30 WrapperNode [2022-11-02 20:13:30,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:13:30,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:30,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:13:30,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:13:30,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,753 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-11-02 20:13:30,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:13:30,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:13:30,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:13:30,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:13:30,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:13:30,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:13:30,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:13:30,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:13:30,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (1/1) ... [2022-11-02 20:13:30,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:13:30,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:30,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:13:30,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:13:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:13:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:13:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:13:31,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:13:31,174 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:13:31,177 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:13:33,656 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:13:33,668 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:13:33,669 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:13:33,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:33 BoogieIcfgContainer [2022-11-02 20:13:33,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:13:33,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:13:33,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:13:33,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:13:33,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:13:29" (1/3) ... [2022-11-02 20:13:33,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6243428e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:33, skipping insertion in model container [2022-11-02 20:13:33,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:13:30" (2/3) ... [2022-11-02 20:13:33,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6243428e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:13:33, skipping insertion in model container [2022-11-02 20:13:33,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:13:33" (3/3) ... [2022-11-02 20:13:33,684 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label40.c [2022-11-02 20:13:33,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:13:33,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:13:33,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:13:33,785 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c6e93b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:13:33,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:13:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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) [2022-11-02 20:13:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-02 20:13:33,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:33,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:33,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:33,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash 359811874, now seen corresponding path program 1 times [2022-11-02 20:13:33,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:33,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472328315] [2022-11-02 20:13:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:33,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:34,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:34,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472328315] [2022-11-02 20:13:34,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472328315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:34,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:34,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:13:34,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752913152] [2022-11-02 20:13:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:34,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:34,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:34,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:34,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:34,951 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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) [2022-11-02 20:13:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:36,454 INFO L93 Difference]: Finished difference Result 855 states and 1496 transitions. [2022-11-02 20:13:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:36,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 184 [2022-11-02 20:13:36,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:36,483 INFO L225 Difference]: With dead ends: 855 [2022-11-02 20:13:36,485 INFO L226 Difference]: Without dead ends: 460 [2022-11-02 20:13:36,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:36,503 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 112 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:36,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 176 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:13:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-02 20:13:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 459. [2022-11-02 20:13:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.5502183406113537) internal successors, (710), 458 states have internal predecessors, (710), 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) [2022-11-02 20:13:36,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 710 transitions. [2022-11-02 20:13:36,609 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 710 transitions. Word has length 184 [2022-11-02 20:13:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:36,613 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 710 transitions. [2022-11-02 20:13:36,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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) [2022-11-02 20:13:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 710 transitions. [2022-11-02 20:13:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-02 20:13:36,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:36,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:13:36,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:36,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash -116317198, now seen corresponding path program 1 times [2022-11-02 20:13:36,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:36,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601619824] [2022-11-02 20:13:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:36,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:37,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:37,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601619824] [2022-11-02 20:13:37,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601619824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:37,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:37,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:13:37,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59963080] [2022-11-02 20:13:37,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:37,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:37,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:37,265 INFO L87 Difference]: Start difference. First operand 459 states and 710 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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) [2022-11-02 20:13:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:38,536 INFO L93 Difference]: Finished difference Result 1342 states and 2082 transitions. [2022-11-02 20:13:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:38,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 189 [2022-11-02 20:13:38,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:38,541 INFO L225 Difference]: With dead ends: 1342 [2022-11-02 20:13:38,541 INFO L226 Difference]: Without dead ends: 885 [2022-11-02 20:13:38,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:38,544 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:38,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 181 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:13:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-11-02 20:13:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 880. [2022-11-02 20:13:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.4687144482366326) internal successors, (1291), 879 states have internal predecessors, (1291), 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) [2022-11-02 20:13:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1291 transitions. [2022-11-02 20:13:38,636 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1291 transitions. Word has length 189 [2022-11-02 20:13:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:38,636 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1291 transitions. [2022-11-02 20:13:38,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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) [2022-11-02 20:13:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1291 transitions. [2022-11-02 20:13:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-02 20:13:38,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:38,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:38,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:13:38,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1976846399, now seen corresponding path program 1 times [2022-11-02 20:13:38,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:38,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278730228] [2022-11-02 20:13:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:39,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:39,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278730228] [2022-11-02 20:13:39,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278730228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:39,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:39,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:13:39,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153729242] [2022-11-02 20:13:39,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:39,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:39,071 INFO L87 Difference]: Start difference. First operand 880 states and 1291 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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) [2022-11-02 20:13:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:40,481 INFO L93 Difference]: Finished difference Result 2594 states and 3822 transitions. [2022-11-02 20:13:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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 192 [2022-11-02 20:13:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:40,489 INFO L225 Difference]: With dead ends: 2594 [2022-11-02 20:13:40,489 INFO L226 Difference]: Without dead ends: 1716 [2022-11-02 20:13:40,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:40,493 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:40,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:13:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-11-02 20:13:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1696. [2022-11-02 20:13:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1695 states have (on average 1.4395280235988202) internal successors, (2440), 1695 states have internal predecessors, (2440), 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) [2022-11-02 20:13:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2440 transitions. [2022-11-02 20:13:40,551 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2440 transitions. Word has length 192 [2022-11-02 20:13:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:40,552 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2440 transitions. [2022-11-02 20:13:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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) [2022-11-02 20:13:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2440 transitions. [2022-11-02 20:13:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-02 20:13:40,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:40,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:40,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:13:40,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:40,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2013935212, now seen corresponding path program 1 times [2022-11-02 20:13:40,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:40,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616120796] [2022-11-02 20:13:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:13:41,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:41,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616120796] [2022-11-02 20:13:41,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616120796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:41,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:41,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:13:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462024212] [2022-11-02 20:13:41,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:41,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:13:41,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:41,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:13:41,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:41,641 INFO L87 Difference]: Start difference. First operand 1696 states and 2440 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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) [2022-11-02 20:13:43,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:43,111 INFO L93 Difference]: Finished difference Result 3531 states and 5130 transitions. [2022-11-02 20:13:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:13:43,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 199 [2022-11-02 20:13:43,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:43,121 INFO L225 Difference]: With dead ends: 3531 [2022-11-02 20:13:43,122 INFO L226 Difference]: Without dead ends: 1663 [2022-11-02 20:13:43,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:43,137 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 300 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:43,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 47 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:13:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-11-02 20:13:43,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1663. [2022-11-02 20:13:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 1.325511432009627) internal successors, (2203), 1662 states have internal predecessors, (2203), 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) [2022-11-02 20:13:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2203 transitions. [2022-11-02 20:13:43,188 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2203 transitions. Word has length 199 [2022-11-02 20:13:43,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:43,190 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2203 transitions. [2022-11-02 20:13:43,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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) [2022-11-02 20:13:43,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2203 transitions. [2022-11-02 20:13:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-02 20:13:43,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:43,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:43,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:13:43,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:43,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash -611089167, now seen corresponding path program 1 times [2022-11-02 20:13:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:43,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002139905] [2022-11-02 20:13:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:13:44,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:44,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002139905] [2022-11-02 20:13:44,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002139905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:44,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:44,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:13:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728671646] [2022-11-02 20:13:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:44,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:13:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:44,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:13:44,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:44,201 INFO L87 Difference]: Start difference. First operand 1663 states and 2203 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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) [2022-11-02 20:13:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:45,953 INFO L93 Difference]: Finished difference Result 4323 states and 5743 transitions. [2022-11-02 20:13:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:13:45,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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 215 [2022-11-02 20:13:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:45,964 INFO L225 Difference]: With dead ends: 4323 [2022-11-02 20:13:45,964 INFO L226 Difference]: Without dead ends: 2488 [2022-11-02 20:13:45,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:45,976 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 195 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:45,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 94 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:13:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2022-11-02 20:13:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2487. [2022-11-02 20:13:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.3085277554304102) internal successors, (3253), 2486 states have internal predecessors, (3253), 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) [2022-11-02 20:13:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3253 transitions. [2022-11-02 20:13:46,034 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3253 transitions. Word has length 215 [2022-11-02 20:13:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:46,035 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 3253 transitions. [2022-11-02 20:13:46,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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) [2022-11-02 20:13:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3253 transitions. [2022-11-02 20:13:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-02 20:13:46,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:46,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:46,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:13:46,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1625909836, now seen corresponding path program 1 times [2022-11-02 20:13:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:46,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935339220] [2022-11-02 20:13:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:13:46,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:46,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935339220] [2022-11-02 20:13:46,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935339220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:46,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:46,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:13:46,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393735245] [2022-11-02 20:13:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:46,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:46,631 INFO L87 Difference]: Start difference. First operand 2487 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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) [2022-11-02 20:13:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:47,706 INFO L93 Difference]: Finished difference Result 7431 states and 9726 transitions. [2022-11-02 20:13:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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 217 [2022-11-02 20:13:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:47,727 INFO L225 Difference]: With dead ends: 7431 [2022-11-02 20:13:47,727 INFO L226 Difference]: Without dead ends: 4946 [2022-11-02 20:13:47,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:47,734 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 204 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:47,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 63 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:13:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2022-11-02 20:13:47,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4937. [2022-11-02 20:13:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4937 states, 4936 states have (on average 1.2872771474878444) internal successors, (6354), 4936 states have internal predecessors, (6354), 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) [2022-11-02 20:13:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 6354 transitions. [2022-11-02 20:13:47,881 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 6354 transitions. Word has length 217 [2022-11-02 20:13:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:47,882 INFO L495 AbstractCegarLoop]: Abstraction has 4937 states and 6354 transitions. [2022-11-02 20:13:47,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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) [2022-11-02 20:13:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 6354 transitions. [2022-11-02 20:13:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-02 20:13:47,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:47,894 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:47,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:13:47,895 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1282255010, now seen corresponding path program 1 times [2022-11-02 20:13:47,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:47,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973313518] [2022-11-02 20:13:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:47,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:13:48,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:48,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973313518] [2022-11-02 20:13:48,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973313518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:13:48,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193033096] [2022-11-02 20:13:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:48,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:48,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:48,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:48,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:13:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:48,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:13:48,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-02 20:13:49,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:49,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193033096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:49,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:13:49,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-11-02 20:13:49,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31532944] [2022-11-02 20:13:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:49,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:49,161 INFO L87 Difference]: Start difference. First operand 4937 states and 6354 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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) [2022-11-02 20:13:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:49,561 INFO L93 Difference]: Finished difference Result 14805 states and 19056 transitions. [2022-11-02 20:13:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:49,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 233 [2022-11-02 20:13:49,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:49,597 INFO L225 Difference]: With dead ends: 14805 [2022-11-02 20:13:49,597 INFO L226 Difference]: Without dead ends: 9870 [2022-11-02 20:13:49,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:49,605 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 268 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:49,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 507 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:13:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9870 states. [2022-11-02 20:13:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9870 to 9868. [2022-11-02 20:13:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9868 states, 9867 states have (on average 1.2839768926725448) internal successors, (12669), 9867 states have internal predecessors, (12669), 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) [2022-11-02 20:13:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9868 states to 9868 states and 12669 transitions. [2022-11-02 20:13:49,840 INFO L78 Accepts]: Start accepts. Automaton has 9868 states and 12669 transitions. Word has length 233 [2022-11-02 20:13:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:49,840 INFO L495 AbstractCegarLoop]: Abstraction has 9868 states and 12669 transitions. [2022-11-02 20:13:49,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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) [2022-11-02 20:13:49,841 INFO L276 IsEmpty]: Start isEmpty. Operand 9868 states and 12669 transitions. [2022-11-02 20:13:49,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-02 20:13:49,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:49,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:49,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:50,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:13:50,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1372364853, now seen corresponding path program 1 times [2022-11-02 20:13:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227150046] [2022-11-02 20:13:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:50,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:13:50,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:50,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227150046] [2022-11-02 20:13:50,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227150046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:13:50,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521039500] [2022-11-02 20:13:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:50,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:50,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:50,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:50,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:13:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:51,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:13:51,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:13:51,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:51,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521039500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:51,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:13:51,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:13:51,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686105728] [2022-11-02 20:13:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:51,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:51,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:51,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:51,416 INFO L87 Difference]: Start difference. First operand 9868 states and 12669 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2022-11-02 20:13:52,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:52,647 INFO L93 Difference]: Finished difference Result 24679 states and 31789 transitions. [2022-11-02 20:13:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:52,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 241 [2022-11-02 20:13:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:52,715 INFO L225 Difference]: With dead ends: 24679 [2022-11-02 20:13:52,716 INFO L226 Difference]: Without dead ends: 14813 [2022-11-02 20:13:52,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:52,729 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 74 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:52,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 106 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:13:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14813 states. [2022-11-02 20:13:53,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14813 to 14801. [2022-11-02 20:13:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14801 states, 14800 states have (on average 1.262027027027027) internal successors, (18678), 14800 states have internal predecessors, (18678), 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) [2022-11-02 20:13:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14801 states to 14801 states and 18678 transitions. [2022-11-02 20:13:53,075 INFO L78 Accepts]: Start accepts. Automaton has 14801 states and 18678 transitions. Word has length 241 [2022-11-02 20:13:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:53,076 INFO L495 AbstractCegarLoop]: Abstraction has 14801 states and 18678 transitions. [2022-11-02 20:13:53,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2022-11-02 20:13:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 14801 states and 18678 transitions. [2022-11-02 20:13:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-02 20:13:53,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:53,105 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:53,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:53,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:13:53,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:53,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:53,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1700715822, now seen corresponding path program 1 times [2022-11-02 20:13:53,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:53,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789777379] [2022-11-02 20:13:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:53,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-02 20:13:54,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:54,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789777379] [2022-11-02 20:13:54,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789777379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:54,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:54,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:13:54,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795535071] [2022-11-02 20:13:54,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:54,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:54,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:54,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:54,011 INFO L87 Difference]: Start difference. First operand 14801 states and 18678 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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) [2022-11-02 20:13:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:55,308 INFO L93 Difference]: Finished difference Result 44216 states and 55778 transitions. [2022-11-02 20:13:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:55,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 244 [2022-11-02 20:13:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:55,379 INFO L225 Difference]: With dead ends: 44216 [2022-11-02 20:13:55,379 INFO L226 Difference]: Without dead ends: 29417 [2022-11-02 20:13:55,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:13:55,403 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 204 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:55,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 127 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:13:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29417 states. [2022-11-02 20:13:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29417 to 29417. [2022-11-02 20:13:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29417 states, 29416 states have (on average 1.1694316018493336) internal successors, (34400), 29416 states have internal predecessors, (34400), 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) [2022-11-02 20:13:56,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29417 states to 29417 states and 34400 transitions. [2022-11-02 20:13:56,164 INFO L78 Accepts]: Start accepts. Automaton has 29417 states and 34400 transitions. Word has length 244 [2022-11-02 20:13:56,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:56,165 INFO L495 AbstractCegarLoop]: Abstraction has 29417 states and 34400 transitions. [2022-11-02 20:13:56,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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) [2022-11-02 20:13:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 29417 states and 34400 transitions. [2022-11-02 20:13:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-02 20:13:56,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:56,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:56,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:13:56,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:56,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash 216253889, now seen corresponding path program 1 times [2022-11-02 20:13:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:56,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772294673] [2022-11-02 20:13:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:13:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:13:56,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772294673] [2022-11-02 20:13:56,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772294673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:13:56,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668967972] [2022-11-02 20:13:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:56,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:13:56,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:13:56,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:13:56,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:13:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:57,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:13:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:13:57,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:57,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668967972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:57,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:13:57,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:13:57,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417278597] [2022-11-02 20:13:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:57,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:13:57,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:13:57,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:13:57,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:57,252 INFO L87 Difference]: Start difference. First operand 29417 states and 34400 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2022-11-02 20:13:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:58,604 INFO L93 Difference]: Finished difference Result 55819 states and 65588 transitions. [2022-11-02 20:13:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:13:58,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 245 [2022-11-02 20:13:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:58,664 INFO L225 Difference]: With dead ends: 55819 [2022-11-02 20:13:58,664 INFO L226 Difference]: Without dead ends: 26404 [2022-11-02 20:13:58,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:58,694 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 191 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:58,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 287 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:13:58,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26404 states. [2022-11-02 20:13:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26404 to 26372. [2022-11-02 20:13:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26372 states, 26371 states have (on average 1.1672670736794206) internal successors, (30782), 26371 states have internal predecessors, (30782), 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) [2022-11-02 20:13:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26372 states to 26372 states and 30782 transitions. [2022-11-02 20:13:59,443 INFO L78 Accepts]: Start accepts. Automaton has 26372 states and 30782 transitions. Word has length 245 [2022-11-02 20:13:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:59,449 INFO L495 AbstractCegarLoop]: Abstraction has 26372 states and 30782 transitions. [2022-11-02 20:13:59,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2022-11-02 20:13:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 26372 states and 30782 transitions. [2022-11-02 20:13:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-02 20:13:59,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:59,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:13:59,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 20:13:59,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:13:59,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:59,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1597815934, now seen corresponding path program 1 times [2022-11-02 20:13:59,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:13:59,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195579497] [2022-11-02 20:13:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:59,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:13:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 20:14:00,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:00,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195579497] [2022-11-02 20:14:00,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195579497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:00,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404089918] [2022-11-02 20:14:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:00,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:00,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:00,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:00,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:14:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:00,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:14:00,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:14:00,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:00,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404089918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:00,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:14:00,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:14:00,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707886427] [2022-11-02 20:14:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:00,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:00,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:00,816 INFO L87 Difference]: Start difference. First operand 26372 states and 30782 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2022-11-02 20:14:02,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:02,205 INFO L93 Difference]: Finished difference Result 63712 states and 75538 transitions. [2022-11-02 20:14:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:02,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 254 [2022-11-02 20:14:02,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:02,292 INFO L225 Difference]: With dead ends: 63712 [2022-11-02 20:14:02,293 INFO L226 Difference]: Without dead ends: 37342 [2022-11-02 20:14:02,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:02,309 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 185 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:02,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 333 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:14:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37342 states. [2022-11-02 20:14:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37342 to 37334. [2022-11-02 20:14:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37334 states, 37333 states have (on average 1.1299922320735007) internal successors, (42186), 37333 states have internal predecessors, (42186), 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) [2022-11-02 20:14:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37334 states to 37334 states and 42186 transitions. [2022-11-02 20:14:03,276 INFO L78 Accepts]: Start accepts. Automaton has 37334 states and 42186 transitions. Word has length 254 [2022-11-02 20:14:03,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:03,276 INFO L495 AbstractCegarLoop]: Abstraction has 37334 states and 42186 transitions. [2022-11-02 20:14:03,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2022-11-02 20:14:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 37334 states and 42186 transitions. [2022-11-02 20:14:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-02 20:14:03,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:03,360 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:03,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:03,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:03,587 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:03,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:03,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1093536924, now seen corresponding path program 1 times [2022-11-02 20:14:03,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:03,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618070712] [2022-11-02 20:14:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:03,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-02 20:14:04,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:04,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618070712] [2022-11-02 20:14:04,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618070712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:04,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064712357] [2022-11-02 20:14:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:04,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:04,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:04,481 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:04,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:14:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:04,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:14:04,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-02 20:14:04,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:04,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064712357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:04,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:14:04,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:14:04,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173639966] [2022-11-02 20:14:04,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:04,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:04,874 INFO L87 Difference]: Start difference. First operand 37334 states and 42186 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2022-11-02 20:14:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:06,217 INFO L93 Difference]: Finished difference Result 73212 states and 82800 transitions. [2022-11-02 20:14:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:06,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 297 [2022-11-02 20:14:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:06,307 INFO L225 Difference]: With dead ends: 73212 [2022-11-02 20:14:06,307 INFO L226 Difference]: Without dead ends: 36286 [2022-11-02 20:14:06,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:06,337 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 208 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:06,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 312 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:14:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36286 states. [2022-11-02 20:14:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36286 to 36274. [2022-11-02 20:14:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36274 states, 36273 states have (on average 1.1095029360681499) internal successors, (40245), 36273 states have internal predecessors, (40245), 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) [2022-11-02 20:14:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36274 states to 36274 states and 40245 transitions. [2022-11-02 20:14:07,128 INFO L78 Accepts]: Start accepts. Automaton has 36274 states and 40245 transitions. Word has length 297 [2022-11-02 20:14:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:07,129 INFO L495 AbstractCegarLoop]: Abstraction has 36274 states and 40245 transitions. [2022-11-02 20:14:07,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2022-11-02 20:14:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 36274 states and 40245 transitions. [2022-11-02 20:14:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-02 20:14:07,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:07,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:07,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 20:14:07,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:07,404 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1039532014, now seen corresponding path program 1 times [2022-11-02 20:14:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:07,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785797398] [2022-11-02 20:14:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:07,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 121 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:08,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:08,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785797398] [2022-11-02 20:14:08,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785797398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:08,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030739555] [2022-11-02 20:14:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:08,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:08,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:08,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:09,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:14:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:09,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:14:09,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:14:09,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:09,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030739555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:09,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:14:09,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-02 20:14:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678645923] [2022-11-02 20:14:09,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:09,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:09,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:09,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:09,734 INFO L87 Difference]: Start difference. First operand 36274 states and 40245 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2022-11-02 20:14:11,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:11,083 INFO L93 Difference]: Finished difference Result 77020 states and 85888 transitions. [2022-11-02 20:14:11,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:11,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 314 [2022-11-02 20:14:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:11,156 INFO L225 Difference]: With dead ends: 77020 [2022-11-02 20:14:11,157 INFO L226 Difference]: Without dead ends: 41154 [2022-11-02 20:14:11,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:11,180 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 79 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:11,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 282 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:14:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41154 states. [2022-11-02 20:14:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41154 to 41146. [2022-11-02 20:14:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41146 states, 41145 states have (on average 1.1140600315955766) internal successors, (45838), 41145 states have internal predecessors, (45838), 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) [2022-11-02 20:14:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41146 states to 41146 states and 45838 transitions. [2022-11-02 20:14:12,030 INFO L78 Accepts]: Start accepts. Automaton has 41146 states and 45838 transitions. Word has length 314 [2022-11-02 20:14:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:12,031 INFO L495 AbstractCegarLoop]: Abstraction has 41146 states and 45838 transitions. [2022-11-02 20:14:12,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2022-11-02 20:14:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 41146 states and 45838 transitions. [2022-11-02 20:14:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-02 20:14:12,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:12,082 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:12,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:12,311 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:12,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1562967734, now seen corresponding path program 1 times [2022-11-02 20:14:12,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:12,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684473609] [2022-11-02 20:14:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:12,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-11-02 20:14:13,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:13,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684473609] [2022-11-02 20:14:13,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684473609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:13,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:13,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817208146] [2022-11-02 20:14:13,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:13,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:13,089 INFO L87 Difference]: Start difference. First operand 41146 states and 45838 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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) [2022-11-02 20:14:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:14,346 INFO L93 Difference]: Finished difference Result 94721 states and 105590 transitions. [2022-11-02 20:14:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:14,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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 384 [2022-11-02 20:14:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:14,401 INFO L225 Difference]: With dead ends: 94721 [2022-11-02 20:14:14,401 INFO L226 Difference]: Without dead ends: 53983 [2022-11-02 20:14:14,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:14,428 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 155 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:14,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 126 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:14:14,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53983 states. [2022-11-02 20:14:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53983 to 49475. [2022-11-02 20:14:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49475 states, 49474 states have (on average 1.1135545943323766) internal successors, (55092), 49474 states have internal predecessors, (55092), 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) [2022-11-02 20:14:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49475 states to 49475 states and 55092 transitions. [2022-11-02 20:14:15,554 INFO L78 Accepts]: Start accepts. Automaton has 49475 states and 55092 transitions. Word has length 384 [2022-11-02 20:14:15,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:15,555 INFO L495 AbstractCegarLoop]: Abstraction has 49475 states and 55092 transitions. [2022-11-02 20:14:15,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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) [2022-11-02 20:14:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 49475 states and 55092 transitions. [2022-11-02 20:14:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-02 20:14:15,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:15,657 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:15,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:14:15,658 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash -493270935, now seen corresponding path program 1 times [2022-11-02 20:14:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:15,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898330173] [2022-11-02 20:14:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:15,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 204 proven. 6 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2022-11-02 20:14:16,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:16,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898330173] [2022-11-02 20:14:16,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898330173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:16,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835122307] [2022-11-02 20:14:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:16,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:16,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:16,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:14:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:17,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:14:17,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-11-02 20:14:17,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:17,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835122307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:17,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:14:17,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:14:17,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535919612] [2022-11-02 20:14:17,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:17,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:17,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:17,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:17,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:17,367 INFO L87 Difference]: Start difference. First operand 49475 states and 55092 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2022-11-02 20:14:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:18,132 INFO L93 Difference]: Finished difference Result 137642 states and 153225 transitions. [2022-11-02 20:14:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:18,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 414 [2022-11-02 20:14:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:18,437 INFO L225 Difference]: With dead ends: 137642 [2022-11-02 20:14:18,437 INFO L226 Difference]: Without dead ends: 88981 [2022-11-02 20:14:18,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:18,469 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 228 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:18,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 497 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:14:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88981 states. [2022-11-02 20:14:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88981 to 88976. [2022-11-02 20:14:19,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88976 states, 88975 states have (on average 1.111851643720146) internal successors, (98927), 88975 states have internal predecessors, (98927), 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) [2022-11-02 20:14:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88976 states to 88976 states and 98927 transitions. [2022-11-02 20:14:20,162 INFO L78 Accepts]: Start accepts. Automaton has 88976 states and 98927 transitions. Word has length 414 [2022-11-02 20:14:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:20,163 INFO L495 AbstractCegarLoop]: Abstraction has 88976 states and 98927 transitions. [2022-11-02 20:14:20,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2022-11-02 20:14:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 88976 states and 98927 transitions. [2022-11-02 20:14:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-11-02 20:14:20,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:20,330 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:20,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:20,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:14:20,531 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1425788597, now seen corresponding path program 1 times [2022-11-02 20:14:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:20,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282851501] [2022-11-02 20:14:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 190 proven. 6 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-11-02 20:14:21,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:21,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282851501] [2022-11-02 20:14:21,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282851501] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:21,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600286181] [2022-11-02 20:14:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:21,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:21,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:21,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:21,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:14:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:22,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:14:22,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-02 20:14:22,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:22,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600286181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:22,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:14:22,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:14:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735175843] [2022-11-02 20:14:22,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:22,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:22,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:22,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:22,207 INFO L87 Difference]: Start difference. First operand 88976 states and 98927 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2022-11-02 20:14:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:23,647 INFO L93 Difference]: Finished difference Result 177153 states and 197026 transitions. [2022-11-02 20:14:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 420 [2022-11-02 20:14:23,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:23,794 INFO L225 Difference]: With dead ends: 177153 [2022-11-02 20:14:23,794 INFO L226 Difference]: Without dead ends: 88991 [2022-11-02 20:14:23,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:23,839 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 159 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:23,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 113 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:14:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88991 states. [2022-11-02 20:14:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88991 to 88976. [2022-11-02 20:14:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88976 states, 88975 states have (on average 1.0987693172239392) internal successors, (97763), 88975 states have internal predecessors, (97763), 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) [2022-11-02 20:14:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88976 states to 88976 states and 97763 transitions. [2022-11-02 20:14:25,424 INFO L78 Accepts]: Start accepts. Automaton has 88976 states and 97763 transitions. Word has length 420 [2022-11-02 20:14:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:25,424 INFO L495 AbstractCegarLoop]: Abstraction has 88976 states and 97763 transitions. [2022-11-02 20:14:25,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2022-11-02 20:14:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 88976 states and 97763 transitions. [2022-11-02 20:14:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-02 20:14:25,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:25,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:25,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:14:25,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:14:25,687 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1785867775, now seen corresponding path program 1 times [2022-11-02 20:14:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:25,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000025789] [2022-11-02 20:14:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 269 proven. 95 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 20:14:29,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:29,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000025789] [2022-11-02 20:14:29,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000025789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:29,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224361283] [2022-11-02 20:14:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:29,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:29,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:29,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:29,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:14:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:29,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:14:29,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 20:14:29,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:29,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224361283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:29,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:14:29,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-02 20:14:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953383119] [2022-11-02 20:14:29,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:29,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:29,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:29,736 INFO L87 Difference]: Start difference. First operand 88976 states and 97763 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2022-11-02 20:14:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:31,094 INFO L93 Difference]: Finished difference Result 167122 states and 183334 transitions. [2022-11-02 20:14:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:31,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 423 [2022-11-02 20:14:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:31,184 INFO L225 Difference]: With dead ends: 167122 [2022-11-02 20:14:31,184 INFO L226 Difference]: Without dead ends: 78960 [2022-11-02 20:14:31,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:14:31,223 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 132 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:31,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 303 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:14:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78960 states. [2022-11-02 20:14:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78960 to 75911. [2022-11-02 20:14:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75911 states, 75910 states have (on average 1.0786325912264523) internal successors, (81879), 75910 states have internal predecessors, (81879), 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) [2022-11-02 20:14:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75911 states to 75911 states and 81879 transitions. [2022-11-02 20:14:32,409 INFO L78 Accepts]: Start accepts. Automaton has 75911 states and 81879 transitions. Word has length 423 [2022-11-02 20:14:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:32,410 INFO L495 AbstractCegarLoop]: Abstraction has 75911 states and 81879 transitions. [2022-11-02 20:14:32,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2022-11-02 20:14:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 75911 states and 81879 transitions. [2022-11-02 20:14:32,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-02 20:14:32,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:32,926 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:32,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-02 20:14:33,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:14:33,147 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:33,148 INFO L85 PathProgramCache]: Analyzing trace with hash 787184307, now seen corresponding path program 1 times [2022-11-02 20:14:33,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:33,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691063209] [2022-11-02 20:14:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-02 20:14:33,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:33,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691063209] [2022-11-02 20:14:33,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691063209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:33,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:33,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:33,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959040518] [2022-11-02 20:14:33,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:33,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:14:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:33,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:14:33,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:33,870 INFO L87 Difference]: Start difference. First operand 75911 states and 81879 transitions. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-11-02 20:14:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:36,084 INFO L93 Difference]: Finished difference Result 158997 states and 171829 transitions. [2022-11-02 20:14:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:14:36,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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 429 [2022-11-02 20:14:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:36,189 INFO L225 Difference]: With dead ends: 158997 [2022-11-02 20:14:36,189 INFO L226 Difference]: Without dead ends: 84103 [2022-11-02 20:14:36,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:36,227 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 341 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:36,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 110 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:14:36,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84103 states. [2022-11-02 20:14:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84103 to 84063. [2022-11-02 20:14:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84063 states, 84062 states have (on average 1.0770859603625895) internal successors, (90542), 84062 states have internal predecessors, (90542), 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) [2022-11-02 20:14:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84063 states to 84063 states and 90542 transitions. [2022-11-02 20:14:37,805 INFO L78 Accepts]: Start accepts. Automaton has 84063 states and 90542 transitions. Word has length 429 [2022-11-02 20:14:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:37,806 INFO L495 AbstractCegarLoop]: Abstraction has 84063 states and 90542 transitions. [2022-11-02 20:14:37,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-11-02 20:14:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 84063 states and 90542 transitions. [2022-11-02 20:14:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-11-02 20:14:37,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:37,901 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:14:37,902 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:37,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1288204574, now seen corresponding path program 1 times [2022-11-02 20:14:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:37,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475634214] [2022-11-02 20:14:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 311 proven. 29 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-02 20:14:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475634214] [2022-11-02 20:14:39,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475634214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:14:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226320097] [2022-11-02 20:14:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:39,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:39,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:14:39,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:14:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:39,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:14:39,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:14:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-02 20:14:39,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:14:39,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226320097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:39,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:14:39,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:14:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043621523] [2022-11-02 20:14:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:39,993 INFO L87 Difference]: Start difference. First operand 84063 states and 90542 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2022-11-02 20:14:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:42,057 INFO L93 Difference]: Finished difference Result 159995 states and 172351 transitions. [2022-11-02 20:14:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:42,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 453 [2022-11-02 20:14:42,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:42,159 INFO L225 Difference]: With dead ends: 159995 [2022-11-02 20:14:42,159 INFO L226 Difference]: Without dead ends: 76949 [2022-11-02 20:14:42,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:42,193 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 209 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:42,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 295 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:14:42,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76949 states. [2022-11-02 20:14:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76949 to 70843. [2022-11-02 20:14:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70843 states, 70842 states have (on average 1.0643403630614607) internal successors, (75400), 70842 states have internal predecessors, (75400), 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) [2022-11-02 20:14:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70843 states to 70843 states and 75400 transitions. [2022-11-02 20:14:43,710 INFO L78 Accepts]: Start accepts. Automaton has 70843 states and 75400 transitions. Word has length 453 [2022-11-02 20:14:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:43,711 INFO L495 AbstractCegarLoop]: Abstraction has 70843 states and 75400 transitions. [2022-11-02 20:14:43,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2022-11-02 20:14:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 70843 states and 75400 transitions. [2022-11-02 20:14:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-02 20:14:43,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:43,811 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:43,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-02 20:14:44,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63130413-7172-4d19-89e8-418da625b954/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:14:44,013 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:44,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:44,014 INFO L85 PathProgramCache]: Analyzing trace with hash 236642471, now seen corresponding path program 1 times [2022-11-02 20:14:44,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:44,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677846336] [2022-11-02 20:14:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:44,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-02 20:14:44,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:44,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677846336] [2022-11-02 20:14:44,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677846336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:44,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:44,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:44,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922260632] [2022-11-02 20:14:44,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:14:44,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:44,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:14:44,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:44,939 INFO L87 Difference]: Start difference. First operand 70843 states and 75400 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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) [2022-11-02 20:14:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:47,594 INFO L93 Difference]: Finished difference Result 198448 states and 211001 transitions. [2022-11-02 20:14:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:14:47,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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 473 [2022-11-02 20:14:47,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:47,783 INFO L225 Difference]: With dead ends: 198448 [2022-11-02 20:14:47,784 INFO L226 Difference]: Without dead ends: 128622 [2022-11-02 20:14:47,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:47,831 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 313 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:47,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 431 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:14:47,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128622 states. [2022-11-02 20:14:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128622 to 122108. [2022-11-02 20:14:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122108 states, 122107 states have (on average 1.0633051340218005) internal successors, (129837), 122107 states have internal predecessors, (129837), 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) [2022-11-02 20:14:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122108 states to 122108 states and 129837 transitions. [2022-11-02 20:14:50,579 INFO L78 Accepts]: Start accepts. Automaton has 122108 states and 129837 transitions. Word has length 473 [2022-11-02 20:14:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:50,580 INFO L495 AbstractCegarLoop]: Abstraction has 122108 states and 129837 transitions. [2022-11-02 20:14:50,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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) [2022-11-02 20:14:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 122108 states and 129837 transitions. [2022-11-02 20:14:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-11-02 20:14:50,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:50,645 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:14:50,646 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 65683284, now seen corresponding path program 1 times [2022-11-02 20:14:50,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:50,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890964360] [2022-11-02 20:14:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:50,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 570 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-02 20:14:51,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:51,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890964360] [2022-11-02 20:14:51,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890964360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:51,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:51,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:14:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227084106] [2022-11-02 20:14:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:51,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:14:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:14:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:51,926 INFO L87 Difference]: Start difference. First operand 122108 states and 129837 transitions. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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) [2022-11-02 20:14:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:55,141 INFO L93 Difference]: Finished difference Result 273746 states and 291742 transitions. [2022-11-02 20:14:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:14:55,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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 505 [2022-11-02 20:14:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:55,146 INFO L225 Difference]: With dead ends: 273746 [2022-11-02 20:14:55,146 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:14:55,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:55,200 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 302 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:55,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 100 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:14:55,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:14:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:14:55,201 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) [2022-11-02 20:14:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:14:55,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 505 [2022-11-02 20:14:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:55,215 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:14:55,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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) [2022-11-02 20:14:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:14:55,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:14:55,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:14:55,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:14:55,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.