./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8 --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 d7f66091a22b7f33dbae7f0078b7d76412336b82f61d79dbfed76c4950c4dfdc --- 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-e04fb08 [2022-11-16 12:46:29,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:46:29,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:46:29,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:46:29,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:46:29,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:46:29,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:46:29,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:46:29,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:46:29,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:46:29,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:46:29,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:46:29,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:46:29,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:46:29,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:46:29,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:46:29,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:46:29,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:46:29,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:46:29,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:46:29,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:46:29,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:46:29,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:46:29,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:46:29,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:46:29,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:46:29,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:46:29,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:46:29,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:46:29,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:46:29,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:46:29,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:46:29,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:46:29,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:46:29,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:46:29,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:46:29,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:46:29,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:46:29,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:46:29,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:46:29,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:46:29,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:46:29,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:46:29,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:46:29,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:46:29,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:46:29,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:46:29,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:46:29,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:46:29,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:46:29,487 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:46:29,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:46:29,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:46:29,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:46:29,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:46:29,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:46:29,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:46:29,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:46:29,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:46:29,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:46:29,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:46:29,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:46:29,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:46:29,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:46:29,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:46:29,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:46:29,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:46:29,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:46:29,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:46:29,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:46:29,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:46:29,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:46:29,492 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:46:29,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:46:29,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:46:29,493 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_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7f66091a22b7f33dbae7f0078b7d76412336b82f61d79dbfed76c4950c4dfdc [2022-11-16 12:46:29,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:46:29,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:46:29,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:46:29,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:46:29,781 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:46:29,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem13_label09.c [2022-11-16 12:46:29,887 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/data/487e7ea9e/1014468717c24d79b4c81b84a3240ce0/FLAG2204c90bf [2022-11-16 12:46:30,865 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:46:30,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/sv-benchmarks/c/eca-rers2012/Problem13_label09.c [2022-11-16 12:46:30,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/data/487e7ea9e/1014468717c24d79b4c81b84a3240ce0/FLAG2204c90bf [2022-11-16 12:46:31,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/data/487e7ea9e/1014468717c24d79b4c81b84a3240ce0 [2022-11-16 12:46:31,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:46:31,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:46:31,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:46:31,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:46:31,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:46:31,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:46:31" (1/1) ... [2022-11-16 12:46:31,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195d83ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:31, skipping insertion in model container [2022-11-16 12:46:31,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:46:31" (1/1) ... [2022-11-16 12:46:31,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:46:31,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:46:31,943 WARN L229 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_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/sv-benchmarks/c/eca-rers2012/Problem13_label09.c[8517,8530] [2022-11-16 12:46:33,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:46:33,175 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:46:33,219 WARN L229 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_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/sv-benchmarks/c/eca-rers2012/Problem13_label09.c[8517,8530] [2022-11-16 12:46:33,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:46:33,966 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:46:33,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33 WrapperNode [2022-11-16 12:46:33,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:46:33,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:46:33,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:46:33,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:46:33,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:34,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:34,718 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-16 12:46:34,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:46:34,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:46:34,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:46:34,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:46:34,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:34,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:34,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:34,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:35,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:35,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:35,414 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:35,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:35,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:46:35,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:46:35,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:46:35,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:46:35,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (1/1) ... [2022-11-16 12:46:35,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:46:35,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:35,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:46:35,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:46:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:46:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:46:35,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:46:35,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:46:35,726 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:46:35,728 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:46:42,384 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:46:42,400 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:46:42,401 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:46:42,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:46:42 BoogieIcfgContainer [2022-11-16 12:46:42,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:46:42,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:46:42,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:46:42,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:46:42,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:46:31" (1/3) ... [2022-11-16 12:46:42,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b10dfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:46:42, skipping insertion in model container [2022-11-16 12:46:42,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:33" (2/3) ... [2022-11-16 12:46:42,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b10dfff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:46:42, skipping insertion in model container [2022-11-16 12:46:42,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:46:42" (3/3) ... [2022-11-16 12:46:42,415 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09.c [2022-11-16 12:46:42,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:46:42,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:46:42,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:46:42,541 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;@3bbc8f16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:46:42,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:46:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2022-11-16 12:46:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:46:42,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:42,565 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] [2022-11-16 12:46:42,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:42,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:42,575 INFO L85 PathProgramCache]: Analyzing trace with hash -634083006, now seen corresponding path program 1 times [2022-11-16 12:46:42,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:42,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751862274] [2022-11-16 12:46:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:42,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:43,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:43,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751862274] [2022-11-16 12:46:43,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751862274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:43,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:43,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:46:43,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919923379] [2022-11-16 12:46:43,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:43,205 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2022-11-16 12:46:49,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:49,679 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2022-11-16 12:46:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:46:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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 60 [2022-11-16 12:46:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:49,705 INFO L225 Difference]: With dead ends: 3121 [2022-11-16 12:46:49,706 INFO L226 Difference]: Without dead ends: 1944 [2022-11-16 12:46:49,713 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 [2022-11-16 12:46:49,717 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 929 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:49,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-16 12:46:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-11-16 12:46:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2022-11-16 12:46:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 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) [2022-11-16 12:46:49,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2022-11-16 12:46:49,844 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 60 [2022-11-16 12:46:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:49,845 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2022-11-16 12:46:49,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2022-11-16 12:46:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2022-11-16 12:46:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-16 12:46:49,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:49,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:46:49,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:46:49,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1233426070, now seen corresponding path program 1 times [2022-11-16 12:46:49,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:49,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302840800] [2022-11-16 12:46:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:49,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:50,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:50,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302840800] [2022-11-16 12:46:50,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302840800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:50,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:50,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:46:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236592888] [2022-11-16 12:46:50,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:50,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:50,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:50,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:50,169 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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) [2022-11-16 12:46:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:55,340 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2022-11-16 12:46:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:46:55,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 125 [2022-11-16 12:46:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:55,355 INFO L225 Difference]: With dead ends: 5351 [2022-11-16 12:46:55,356 INFO L226 Difference]: Without dead ends: 3480 [2022-11-16 12:46:55,359 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 [2022-11-16 12:46:55,360 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:55,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-16 12:46:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2022-11-16 12:46:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2022-11-16 12:46:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 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) [2022-11-16 12:46:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2022-11-16 12:46:55,449 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 125 [2022-11-16 12:46:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:55,452 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2022-11-16 12:46:55,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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) [2022-11-16 12:46:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2022-11-16 12:46:55,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-16 12:46:55,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:55,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:46:55,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:46:55,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash 843865445, now seen corresponding path program 1 times [2022-11-16 12:46:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:55,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538651557] [2022-11-16 12:46:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:55,754 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:55,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:55,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538651557] [2022-11-16 12:46:55,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538651557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:55,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:55,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:46:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521400627] [2022-11-16 12:46:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:55,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:55,758 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2022-11-16 12:47:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:01,099 INFO L93 Difference]: Finished difference Result 10142 states and 15438 transitions. [2022-11-16 12:47:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:01,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 127 [2022-11-16 12:47:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:01,125 INFO L225 Difference]: With dead ends: 10142 [2022-11-16 12:47:01,125 INFO L226 Difference]: Without dead ends: 6665 [2022-11-16 12:47:01,131 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 [2022-11-16 12:47:01,132 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:01,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 877 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 12:47:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2022-11-16 12:47:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6657. [2022-11-16 12:47:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 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) [2022-11-16 12:47:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2022-11-16 12:47:01,283 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 127 [2022-11-16 12:47:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:01,284 INFO L495 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2022-11-16 12:47:01,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2022-11-16 12:47:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2022-11-16 12:47:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 12:47:01,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:01,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:47:01,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:47:01,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1693822870, now seen corresponding path program 1 times [2022-11-16 12:47:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:01,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114096146] [2022-11-16 12:47:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:01,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114096146] [2022-11-16 12:47:01,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114096146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:01,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:01,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:47:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569680290] [2022-11-16 12:47:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:01,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:01,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:01,433 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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) [2022-11-16 12:47:06,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:06,139 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2022-11-16 12:47:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:06,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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 133 [2022-11-16 12:47:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:06,183 INFO L225 Difference]: With dead ends: 19637 [2022-11-16 12:47:06,183 INFO L226 Difference]: Without dead ends: 12982 [2022-11-16 12:47:06,192 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 [2022-11-16 12:47:06,193 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:06,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1163 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 12:47:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2022-11-16 12:47:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12175. [2022-11-16 12:47:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 12174 states have (on average 1.2529160505996386) internal successors, (15253), 12174 states have internal predecessors, (15253), 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) [2022-11-16 12:47:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 15253 transitions. [2022-11-16 12:47:06,444 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 15253 transitions. Word has length 133 [2022-11-16 12:47:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:06,446 INFO L495 AbstractCegarLoop]: Abstraction has 12175 states and 15253 transitions. [2022-11-16 12:47:06,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 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) [2022-11-16 12:47:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 15253 transitions. [2022-11-16 12:47:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 12:47:06,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:06,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:47:06,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:47:06,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:06,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1278101586, now seen corresponding path program 1 times [2022-11-16 12:47:06,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:06,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381497022] [2022-11-16 12:47:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:06,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:06,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:06,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381497022] [2022-11-16 12:47:06,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381497022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:06,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:06,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:47:06,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281462311] [2022-11-16 12:47:06,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:06,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:06,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:06,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:06,892 INFO L87 Difference]: Start difference. First operand 12175 states and 15253 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2022-11-16 12:47:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:11,062 INFO L93 Difference]: Finished difference Result 25135 states and 31306 transitions. [2022-11-16 12:47:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 149 [2022-11-16 12:47:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:11,095 INFO L225 Difference]: With dead ends: 25135 [2022-11-16 12:47:11,095 INFO L226 Difference]: Without dead ends: 12962 [2022-11-16 12:47:11,109 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 [2022-11-16 12:47:11,110 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:11,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 12:47:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2022-11-16 12:47:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2022-11-16 12:47:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 12961 states have (on average 1.2379446030398888) internal successors, (16045), 12961 states have internal predecessors, (16045), 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) [2022-11-16 12:47:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16045 transitions. [2022-11-16 12:47:11,362 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16045 transitions. Word has length 149 [2022-11-16 12:47:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:11,363 INFO L495 AbstractCegarLoop]: Abstraction has 12962 states and 16045 transitions. [2022-11-16 12:47:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2022-11-16 12:47:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16045 transitions. [2022-11-16 12:47:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 12:47:11,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:11,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:47:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:47:11,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:11,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1570681347, now seen corresponding path program 1 times [2022-11-16 12:47:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:11,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844290703] [2022-11-16 12:47:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 12:47:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:11,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844290703] [2022-11-16 12:47:11,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844290703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:11,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615690288] [2022-11-16 12:47:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:11,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:11,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:47:11,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:47:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:12,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:47:12,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:12,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:47:12,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615690288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:12,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:47:12,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 12:47:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073101357] [2022-11-16 12:47:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:12,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:12,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:47:12,221 INFO L87 Difference]: Start difference. First operand 12962 states and 16045 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-11-16 12:47:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:17,405 INFO L93 Difference]: Finished difference Result 36956 states and 46072 transitions. [2022-11-16 12:47:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:17,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 156 [2022-11-16 12:47:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:17,457 INFO L225 Difference]: With dead ends: 36956 [2022-11-16 12:47:17,457 INFO L226 Difference]: Without dead ends: 24783 [2022-11-16 12:47:17,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:47:17,473 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 950 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 3509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:17,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 645 Invalid, 3509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-16 12:47:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24783 states. [2022-11-16 12:47:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24783 to 20845. [2022-11-16 12:47:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20845 states, 20844 states have (on average 1.233976204183458) internal successors, (25721), 20844 states have internal predecessors, (25721), 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) [2022-11-16 12:47:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20845 states to 20845 states and 25721 transitions. [2022-11-16 12:47:17,840 INFO L78 Accepts]: Start accepts. Automaton has 20845 states and 25721 transitions. Word has length 156 [2022-11-16 12:47:17,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:17,841 INFO L495 AbstractCegarLoop]: Abstraction has 20845 states and 25721 transitions. [2022-11-16 12:47:17,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-11-16 12:47:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 20845 states and 25721 transitions. [2022-11-16 12:47:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-16 12:47:17,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:17,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:17,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:47:18,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:18,053 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1525153703, now seen corresponding path program 1 times [2022-11-16 12:47:18,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:18,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661753771] [2022-11-16 12:47:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-16 12:47:18,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661753771] [2022-11-16 12:47:18,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661753771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:18,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:18,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:47:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494519880] [2022-11-16 12:47:18,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:18,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:18,737 INFO L87 Difference]: Start difference. First operand 20845 states and 25721 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-11-16 12:47:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:23,383 INFO L93 Difference]: Finished difference Result 45642 states and 55813 transitions. [2022-11-16 12:47:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:23,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 272 [2022-11-16 12:47:23,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:23,434 INFO L225 Difference]: With dead ends: 45642 [2022-11-16 12:47:23,434 INFO L226 Difference]: Without dead ends: 25586 [2022-11-16 12:47:23,453 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 [2022-11-16 12:47:23,454 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:23,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1209 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 12:47:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25586 states. [2022-11-16 12:47:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25586 to 25577. [2022-11-16 12:47:23,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25577 states, 25576 states have (on average 1.205896152643103) internal successors, (30842), 25576 states have internal predecessors, (30842), 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) [2022-11-16 12:47:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25577 states to 25577 states and 30842 transitions. [2022-11-16 12:47:23,967 INFO L78 Accepts]: Start accepts. Automaton has 25577 states and 30842 transitions. Word has length 272 [2022-11-16 12:47:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:23,968 INFO L495 AbstractCegarLoop]: Abstraction has 25577 states and 30842 transitions. [2022-11-16 12:47:23,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-11-16 12:47:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 25577 states and 30842 transitions. [2022-11-16 12:47:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-16 12:47:23,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:23,975 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, 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, 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] [2022-11-16 12:47:23,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:47:23,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:23,976 INFO L85 PathProgramCache]: Analyzing trace with hash -153270830, now seen corresponding path program 1 times [2022-11-16 12:47:23,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:23,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547431208] [2022-11-16 12:47:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:23,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:47:24,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:24,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547431208] [2022-11-16 12:47:24,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547431208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:24,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:24,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:24,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291175174] [2022-11-16 12:47:24,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:24,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:24,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:24,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:24,263 INFO L87 Difference]: Start difference. First operand 25577 states and 30842 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-11-16 12:47:29,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:29,365 INFO L93 Difference]: Finished difference Result 63758 states and 78444 transitions. [2022-11-16 12:47:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:29,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 296 [2022-11-16 12:47:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:29,427 INFO L225 Difference]: With dead ends: 63758 [2022-11-16 12:47:29,427 INFO L226 Difference]: Without dead ends: 38970 [2022-11-16 12:47:29,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:29,441 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 888 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:29,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 956 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-16 12:47:29,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38970 states. [2022-11-16 12:47:29,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38970 to 36598. [2022-11-16 12:47:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36598 states, 36597 states have (on average 1.191299833319671) internal successors, (43598), 36597 states have internal predecessors, (43598), 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) [2022-11-16 12:47:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36598 states to 36598 states and 43598 transitions. [2022-11-16 12:47:29,930 INFO L78 Accepts]: Start accepts. Automaton has 36598 states and 43598 transitions. Word has length 296 [2022-11-16 12:47:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:29,931 INFO L495 AbstractCegarLoop]: Abstraction has 36598 states and 43598 transitions. [2022-11-16 12:47:29,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-11-16 12:47:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand 36598 states and 43598 transitions. [2022-11-16 12:47:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-16 12:47:29,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:29,940 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:29,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:47:29,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash -16737668, now seen corresponding path program 1 times [2022-11-16 12:47:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2980289] [2022-11-16 12:47:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:47:30,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:30,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2980289] [2022-11-16 12:47:30,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2980289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:30,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:30,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100547803] [2022-11-16 12:47:30,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:30,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:30,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:30,336 INFO L87 Difference]: Start difference. First operand 36598 states and 43598 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-11-16 12:47:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:41,317 INFO L93 Difference]: Finished difference Result 106466 states and 128048 transitions. [2022-11-16 12:47:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:47:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 348 [2022-11-16 12:47:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:41,414 INFO L225 Difference]: With dead ends: 106466 [2022-11-16 12:47:41,415 INFO L226 Difference]: Without dead ends: 70657 [2022-11-16 12:47:41,438 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 [2022-11-16 12:47:41,439 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 1707 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 7205 mSolverCounterSat, 981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 8186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 981 IncrementalHoareTripleChecker+Valid, 7205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:41,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 1139 Invalid, 8186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [981 Valid, 7205 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-11-16 12:47:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70657 states. [2022-11-16 12:47:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70657 to 68962. [2022-11-16 12:47:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68962 states, 68961 states have (on average 1.1797827757718131) internal successors, (81359), 68961 states have internal predecessors, (81359), 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) [2022-11-16 12:47:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68962 states to 68962 states and 81359 transitions. [2022-11-16 12:47:42,365 INFO L78 Accepts]: Start accepts. Automaton has 68962 states and 81359 transitions. Word has length 348 [2022-11-16 12:47:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:42,365 INFO L495 AbstractCegarLoop]: Abstraction has 68962 states and 81359 transitions. [2022-11-16 12:47:42,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-11-16 12:47:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 68962 states and 81359 transitions. [2022-11-16 12:47:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-16 12:47:42,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:42,376 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:47:42,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:47:42,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:42,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1843600389, now seen corresponding path program 1 times [2022-11-16 12:47:42,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:42,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421902836] [2022-11-16 12:47:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:42,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 244 proven. 113 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:47:44,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:44,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421902836] [2022-11-16 12:47:44,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421902836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:44,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464719803] [2022-11-16 12:47:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:44,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:44,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:44,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:47:44,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:47:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:44,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:47:44,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-16 12:47:45,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:47:45,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464719803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:45,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:47:45,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:47:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599892231] [2022-11-16 12:47:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:45,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:45,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:45,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:45,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:47:45,118 INFO L87 Difference]: Start difference. First operand 68962 states and 81359 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2022-11-16 12:47:50,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:50,748 INFO L93 Difference]: Finished difference Result 192417 states and 228153 transitions. [2022-11-16 12:47:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:50,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 366 [2022-11-16 12:47:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:50,920 INFO L225 Difference]: With dead ends: 192417 [2022-11-16 12:47:50,921 INFO L226 Difference]: Without dead ends: 124244 [2022-11-16 12:47:50,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:47:50,971 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1076 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:50,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 928 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-16 12:47:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124244 states. [2022-11-16 12:47:52,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124244 to 121067. [2022-11-16 12:47:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121067 states, 121066 states have (on average 1.15423818413097) internal successors, (139739), 121066 states have internal predecessors, (139739), 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) [2022-11-16 12:47:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121067 states to 121067 states and 139739 transitions. [2022-11-16 12:47:53,336 INFO L78 Accepts]: Start accepts. Automaton has 121067 states and 139739 transitions. Word has length 366 [2022-11-16 12:47:53,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:53,337 INFO L495 AbstractCegarLoop]: Abstraction has 121067 states and 139739 transitions. [2022-11-16 12:47:53,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2022-11-16 12:47:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 121067 states and 139739 transitions. [2022-11-16 12:47:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-16 12:47:53,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:53,380 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, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:53,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:47:53,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:47:53,585 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:53,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:53,586 INFO L85 PathProgramCache]: Analyzing trace with hash -996462798, now seen corresponding path program 1 times [2022-11-16 12:47:53,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:53,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54357315] [2022-11-16 12:47:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 481 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-16 12:47:54,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:54,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54357315] [2022-11-16 12:47:54,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54357315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:54,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:54,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682869376] [2022-11-16 12:47:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:54,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:54,097 INFO L87 Difference]: Start difference. First operand 121067 states and 139739 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-11-16 12:47:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:59,564 INFO L93 Difference]: Finished difference Result 230130 states and 266188 transitions. [2022-11-16 12:47:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 [2022-11-16 12:47:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:59,695 INFO L225 Difference]: With dead ends: 230130 [2022-11-16 12:47:59,696 INFO L226 Difference]: Without dead ends: 109065 [2022-11-16 12:47:59,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:59,759 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1036 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:59,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1639 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 12:47:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109065 states. [2022-11-16 12:48:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109065 to 102761. [2022-11-16 12:48:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102761 states, 102760 states have (on average 1.1134488127676139) internal successors, (114418), 102760 states have internal predecessors, (114418), 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) [2022-11-16 12:48:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102761 states to 102761 states and 114418 transitions. [2022-11-16 12:48:01,255 INFO L78 Accepts]: Start accepts. Automaton has 102761 states and 114418 transitions. Word has length 414 [2022-11-16 12:48:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:01,255 INFO L495 AbstractCegarLoop]: Abstraction has 102761 states and 114418 transitions. [2022-11-16 12:48:01,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-11-16 12:48:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 102761 states and 114418 transitions. [2022-11-16 12:48:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-16 12:48:01,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:01,272 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:48:01,272 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -238343487, now seen corresponding path program 1 times [2022-11-16 12:48:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:01,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071693567] [2022-11-16 12:48:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 338 proven. 113 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:48:03,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:03,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071693567] [2022-11-16 12:48:03,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071693567] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:03,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330586445] [2022-11-16 12:48:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:03,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:03,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:03,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:03,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:48:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:03,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:48:03,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-16 12:48:04,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:48:04,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330586445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:04,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:48:04,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:48:04,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766382399] [2022-11-16 12:48:04,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:04,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:04,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:04,217 INFO L87 Difference]: Start difference. First operand 102761 states and 114418 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2022-11-16 12:48:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:09,196 INFO L93 Difference]: Finished difference Result 204731 states and 228041 transitions. [2022-11-16 12:48:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:09,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 415 [2022-11-16 12:48:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:09,312 INFO L225 Difference]: With dead ends: 204731 [2022-11-16 12:48:09,312 INFO L226 Difference]: Without dead ends: 102759 [2022-11-16 12:48:09,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:09,343 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1083 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:09,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1420 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 12:48:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102759 states. [2022-11-16 12:48:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102759 to 102758. [2022-11-16 12:48:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102758 states, 102757 states have (on average 1.0837509853343326) internal successors, (111363), 102757 states have internal predecessors, (111363), 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) [2022-11-16 12:48:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102758 states to 102758 states and 111363 transitions. [2022-11-16 12:48:10,977 INFO L78 Accepts]: Start accepts. Automaton has 102758 states and 111363 transitions. Word has length 415 [2022-11-16 12:48:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:10,978 INFO L495 AbstractCegarLoop]: Abstraction has 102758 states and 111363 transitions. [2022-11-16 12:48:10,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2022-11-16 12:48:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 102758 states and 111363 transitions. [2022-11-16 12:48:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-11-16 12:48:10,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:10,994 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, 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, 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, 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] [2022-11-16 12:48:11,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:11,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:11,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash 227363781, now seen corresponding path program 1 times [2022-11-16 12:48:11,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:11,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395565482] [2022-11-16 12:48:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:11,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 522 proven. 113 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-11-16 12:48:13,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:13,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395565482] [2022-11-16 12:48:13,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395565482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:13,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306952038] [2022-11-16 12:48:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:13,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:13,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:13,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:13,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:48:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:14,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:48:14,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2022-11-16 12:48:14,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:48:14,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306952038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:14,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:48:14,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:48:14,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624943384] [2022-11-16 12:48:14,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:14,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:14,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:14,249 INFO L87 Difference]: Start difference. First operand 102758 states and 111363 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2022-11-16 12:48:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:20,395 INFO L93 Difference]: Finished difference Result 237002 states and 258420 transitions. [2022-11-16 12:48:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:20,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 534 [2022-11-16 12:48:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:20,544 INFO L225 Difference]: With dead ends: 237002 [2022-11-16 12:48:20,544 INFO L226 Difference]: Without dead ends: 135033 [2022-11-16 12:48:20,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:20,587 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 886 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:20,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1739 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 12:48:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135033 states. [2022-11-16 12:48:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135033 to 130294. [2022-11-16 12:48:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130294 states, 130293 states have (on average 1.0758290928906389) internal successors, (140173), 130293 states have internal predecessors, (140173), 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) [2022-11-16 12:48:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130294 states to 130294 states and 140173 transitions. [2022-11-16 12:48:22,354 INFO L78 Accepts]: Start accepts. Automaton has 130294 states and 140173 transitions. Word has length 534 [2022-11-16 12:48:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:22,355 INFO L495 AbstractCegarLoop]: Abstraction has 130294 states and 140173 transitions. [2022-11-16 12:48:22,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2022-11-16 12:48:22,356 INFO L276 IsEmpty]: Start isEmpty. Operand 130294 states and 140173 transitions. [2022-11-16 12:48:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-11-16 12:48:22,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:22,387 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:48:22,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:48:22,588 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:22,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1622361941, now seen corresponding path program 1 times [2022-11-16 12:48:22,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:22,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205707143] [2022-11-16 12:48:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:22,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-16 12:48:23,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:23,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205707143] [2022-11-16 12:48:23,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205707143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:23,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:23,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:23,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112555739] [2022-11-16 12:48:23,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:23,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:23,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:23,666 INFO L87 Difference]: Start difference. First operand 130294 states and 140173 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 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) [2022-11-16 12:48:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:28,930 INFO L93 Difference]: Finished difference Result 261381 states and 281155 transitions. [2022-11-16 12:48:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:28,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 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) Word has length 663 [2022-11-16 12:48:28,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:29,070 INFO L225 Difference]: With dead ends: 261381 [2022-11-16 12:48:29,070 INFO L226 Difference]: Without dead ends: 131876 [2022-11-16 12:48:29,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:29,380 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 835 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:29,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 702 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 12:48:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131876 states. [2022-11-16 12:48:30,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131876 to 130284. [2022-11-16 12:48:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130284 states, 130283 states have (on average 1.065434477253364) internal successors, (138808), 130283 states have internal predecessors, (138808), 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) [2022-11-16 12:48:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130284 states to 130284 states and 138808 transitions. [2022-11-16 12:48:31,030 INFO L78 Accepts]: Start accepts. Automaton has 130284 states and 138808 transitions. Word has length 663 [2022-11-16 12:48:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:31,031 INFO L495 AbstractCegarLoop]: Abstraction has 130284 states and 138808 transitions. [2022-11-16 12:48:31,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 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) [2022-11-16 12:48:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 130284 states and 138808 transitions. [2022-11-16 12:48:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2022-11-16 12:48:31,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:31,061 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:31,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:48:31,061 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:31,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1650283535, now seen corresponding path program 1 times [2022-11-16 12:48:31,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:31,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119961699] [2022-11-16 12:48:31,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:31,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 576 proven. 113 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-11-16 12:48:33,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:33,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119961699] [2022-11-16 12:48:33,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119961699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:33,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286992482] [2022-11-16 12:48:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:33,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:33,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:33,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:33,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:48:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:34,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:48:34,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-16 12:48:34,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:48:34,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286992482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:34,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:48:34,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:48:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480169474] [2022-11-16 12:48:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:34,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:34,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:34,988 INFO L87 Difference]: Start difference. First operand 130284 states and 138808 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2022-11-16 12:48:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:40,257 INFO L93 Difference]: Finished difference Result 249526 states and 266851 transitions. [2022-11-16 12:48:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:40,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 718 [2022-11-16 12:48:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:40,403 INFO L225 Difference]: With dead ends: 249526 [2022-11-16 12:48:40,403 INFO L226 Difference]: Without dead ends: 134990 [2022-11-16 12:48:40,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:40,443 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1016 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:40,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 389 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-16 12:48:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134990 states. [2022-11-16 12:48:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134990 to 134990. [2022-11-16 12:48:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134990 states, 134989 states have (on average 1.0631310699390322) internal successors, (143511), 134989 states have internal predecessors, (143511), 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) [2022-11-16 12:48:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134990 states to 134990 states and 143511 transitions. [2022-11-16 12:48:42,322 INFO L78 Accepts]: Start accepts. Automaton has 134990 states and 143511 transitions. Word has length 718 [2022-11-16 12:48:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:42,323 INFO L495 AbstractCegarLoop]: Abstraction has 134990 states and 143511 transitions. [2022-11-16 12:48:42,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2022-11-16 12:48:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 134990 states and 143511 transitions. [2022-11-16 12:48:42,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2022-11-16 12:48:42,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:42,364 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:42,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:42,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25bf0e53-3bcf-4af4-b434-e7e9ebe29b50/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:42,565 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:42,566 INFO L85 PathProgramCache]: Analyzing trace with hash -228091699, now seen corresponding path program 1 times [2022-11-16 12:48:42,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:42,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411399921] [2022-11-16 12:48:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:42,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 893 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-16 12:48:42,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:42,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411399921] [2022-11-16 12:48:42,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411399921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:42,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:42,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:42,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705888949] [2022-11-16 12:48:42,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:42,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:42,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:42,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:42,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:42,986 INFO L87 Difference]: Start difference. First operand 134990 states and 143511 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2022-11-16 12:48:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:48,649 INFO L93 Difference]: Finished difference Result 270769 states and 287818 transitions. [2022-11-16 12:48:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:48,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 770 [2022-11-16 12:48:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:48,793 INFO L225 Difference]: With dead ends: 270769 [2022-11-16 12:48:48,793 INFO L226 Difference]: Without dead ends: 136568 [2022-11-16 12:48:48,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:48,833 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 932 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:48,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1472 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 12:48:48,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136568 states. [2022-11-16 12:48:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136568 to 134984. [2022-11-16 12:48:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134984 states, 134983 states have (on average 1.052354740967381) internal successors, (142050), 134983 states have internal predecessors, (142050), 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) [2022-11-16 12:48:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134984 states to 134984 states and 142050 transitions. [2022-11-16 12:48:50,651 INFO L78 Accepts]: Start accepts. Automaton has 134984 states and 142050 transitions. Word has length 770 [2022-11-16 12:48:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:50,652 INFO L495 AbstractCegarLoop]: Abstraction has 134984 states and 142050 transitions. [2022-11-16 12:48:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2022-11-16 12:48:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 134984 states and 142050 transitions. [2022-11-16 12:48:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2022-11-16 12:48:51,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:51,257 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:51,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:48:51,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:51,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2135332128, now seen corresponding path program 1 times [2022-11-16 12:48:51,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:51,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754446179] [2022-11-16 12:48:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:51,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-11-16 12:48:51,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:51,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754446179] [2022-11-16 12:48:51,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754446179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:51,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:51,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:48:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820958872] [2022-11-16 12:48:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:51,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:51,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:51,743 INFO L87 Difference]: Start difference. First operand 134984 states and 142050 transitions. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 2 states have internal predecessors, (489), 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) [2022-11-16 12:48:55,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:55,244 INFO L93 Difference]: Finished difference Result 253415 states and 267131 transitions. [2022-11-16 12:48:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:55,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 2 states have internal predecessors, (489), 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 811 [2022-11-16 12:48:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:55,379 INFO L225 Difference]: With dead ends: 253415 [2022-11-16 12:48:55,379 INFO L226 Difference]: Without dead ends: 134179 [2022-11-16 12:48:55,412 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 [2022-11-16 12:48:55,413 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1649 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:55,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 286 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:48:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134179 states.