./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro --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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- 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-8393723 [2022-11-18 20:06:36,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:06:36,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:06:36,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:06:36,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:06:36,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:06:36,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:06:36,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:06:36,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:06:36,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:06:36,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:06:36,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:06:36,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:06:36,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:06:36,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:06:36,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:06:36,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:06:36,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:06:36,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:06:36,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:06:36,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:06:36,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:06:36,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:06:36,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:06:36,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:06:36,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:06:36,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:06:36,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:06:36,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:06:36,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:06:36,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:06:36,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:06:36,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:06:36,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:06:36,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:06:36,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:06:36,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:06:36,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:06:36,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:06:36,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:06:36,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:06:36,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:06:36,570 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:06:36,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:06:36,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:06:36,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:06:36,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:06:36,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:06:36,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:06:36,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:06:36,577 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:06:36,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:06:36,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:06:36,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:06:36,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:06:36,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:06:36,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:06:36,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:06:36,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:06:36,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:06:36,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:06:36,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:06:36,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:06:36,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:06:36,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:06:36,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:06:36,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:36,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:06:36,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:06:36,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:06:36,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:06:36,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:06:36,584 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:06:36,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:06:36,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:06:36,584 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_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-18 20:06:36,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:06:36,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:06:36,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:06:36,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:06:36,949 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:06:36,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-18 20:06:37,015 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/data/09f333445/5bdeb066adfc4794915c5cf93469e81f/FLAGbd1fc69d4 [2022-11-18 20:06:37,647 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:06:37,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-18 20:06:37,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/data/09f333445/5bdeb066adfc4794915c5cf93469e81f/FLAGbd1fc69d4 [2022-11-18 20:06:37,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/data/09f333445/5bdeb066adfc4794915c5cf93469e81f [2022-11-18 20:06:37,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:06:37,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:06:37,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:37,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:06:37,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:06:37,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:37" (1/1) ... [2022-11-18 20:06:37,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164fa7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:37, skipping insertion in model container [2022-11-18 20:06:37,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:37" (1/1) ... [2022-11-18 20:06:37,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:06:37,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:06:38,544 WARN L234 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_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-18 20:06:38,564 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:06:38,564 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:06:38,564 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:06:38,565 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:06:38,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:38,640 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:06:38,690 WARN L234 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_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-18 20:06:38,694 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:06:38,694 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:06:38,695 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:06:38,695 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 20:06:38,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:38,758 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:06:38,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38 WrapperNode [2022-11-18 20:06:38,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:38,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:38,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:06:38,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:06:38,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,813 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 221 [2022-11-18 20:06:38,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:38,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:06:38,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:06:38,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:06:38,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,864 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:06:38,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:06:38,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:06:38,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:06:38,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (1/1) ... [2022-11-18 20:06:38,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:38,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:38,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:06:38,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:06:38,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:06:38,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:06:38,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:06:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:06:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:06:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:06:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:06:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:06:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:06:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:06:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:06:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:06:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:06:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:06:38,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:06:39,143 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:06:39,145 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:06:39,674 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:06:39,690 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:06:39,696 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 20:06:39,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:39 BoogieIcfgContainer [2022-11-18 20:06:39,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:06:39,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:06:39,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:06:39,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:06:39,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:06:37" (1/3) ... [2022-11-18 20:06:39,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c06d909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:39, skipping insertion in model container [2022-11-18 20:06:39,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:38" (2/3) ... [2022-11-18 20:06:39,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c06d909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:39, skipping insertion in model container [2022-11-18 20:06:39,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:39" (3/3) ... [2022-11-18 20:06:39,712 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-18 20:06:39,721 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:06:39,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:06:39,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:06:39,733 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:06:39,846 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:06:39,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 253 transitions, 514 flow [2022-11-18 20:06:40,004 INFO L130 PetriNetUnfolder]: 28/270 cut-off events. [2022-11-18 20:06:40,004 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 20:06:40,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 270 events. 28/270 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 404 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2022-11-18 20:06:40,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 253 transitions, 514 flow [2022-11-18 20:06:40,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 248 transitions, 501 flow [2022-11-18 20:06:40,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:06:40,047 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;@21343119, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:06:40,047 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:06:40,090 INFO L130 PetriNetUnfolder]: 10/179 cut-off events. [2022-11-18 20:06:40,090 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:06:40,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:40,091 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:06:40,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:40,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:40,097 INFO L85 PathProgramCache]: Analyzing trace with hash -883278119, now seen corresponding path program 1 times [2022-11-18 20:06:40,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:40,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834173456] [2022-11-18 20:06:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:40,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:40,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:40,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834173456] [2022-11-18 20:06:40,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834173456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:40,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:40,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:40,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425921461] [2022-11-18 20:06:40,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:40,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:06:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:06:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:06:40,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 253 [2022-11-18 20:06:40,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 248 transitions, 501 flow. Second operand has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:40,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 253 [2022-11-18 20:06:40,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:40,555 INFO L130 PetriNetUnfolder]: 5/242 cut-off events. [2022-11-18 20:06:40,556 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:06:40,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 242 events. 5/242 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 268 event pairs, 0 based on Foata normal form. 22/251 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2022-11-18 20:06:40,560 INFO L137 encePairwiseOnDemand]: 233/253 looper letters, 1 selfloop transitions, 0 changer transitions 2/227 dead transitions. [2022-11-18 20:06:40,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 227 transitions, 461 flow [2022-11-18 20:06:40,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:06:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:06:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 481 transitions. [2022-11-18 20:06:40,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.950592885375494 [2022-11-18 20:06:40,593 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 481 transitions. [2022-11-18 20:06:40,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 481 transitions. [2022-11-18 20:06:40,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:40,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 481 transitions. [2022-11-18 20:06:40,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 240.5) internal successors, (481), 2 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,612 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,614 INFO L175 Difference]: Start difference. First operand has 226 places, 248 transitions, 501 flow. Second operand 2 states and 481 transitions. [2022-11-18 20:06:40,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 227 transitions, 461 flow [2022-11-18 20:06:40,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 227 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:06:40,624 INFO L231 Difference]: Finished difference. Result has 226 places, 225 transitions, 455 flow [2022-11-18 20:06:40,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=455, PETRI_PLACES=226, PETRI_TRANSITIONS=225} [2022-11-18 20:06:40,631 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 0 predicate places. [2022-11-18 20:06:40,631 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 225 transitions, 455 flow [2022-11-18 20:06:40,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:40,633 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:06:40,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:06:40,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1491354982, now seen corresponding path program 1 times [2022-11-18 20:06:40,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:40,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451215761] [2022-11-18 20:06:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:40,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:40,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451215761] [2022-11-18 20:06:40,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451215761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:40,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:40,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:40,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034061756] [2022-11-18 20:06:40,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:40,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:40,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 253 [2022-11-18 20:06:40,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 225 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:40,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 253 [2022-11-18 20:06:40,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:40,940 INFO L130 PetriNetUnfolder]: 6/290 cut-off events. [2022-11-18 20:06:40,940 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:06:40,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 290 events. 6/290 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 400 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 311. Up to 12 conditions per place. [2022-11-18 20:06:40,942 INFO L137 encePairwiseOnDemand]: 250/253 looper letters, 16 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-11-18 20:06:40,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 232 transitions, 505 flow [2022-11-18 20:06:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:06:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2022-11-18 20:06:40,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8945981554677207 [2022-11-18 20:06:40,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2022-11-18 20:06:40,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2022-11-18 20:06:40,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:40,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2022-11-18 20:06:40,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,959 INFO L175 Difference]: Start difference. First operand has 226 places, 225 transitions, 455 flow. Second operand 3 states and 679 transitions. [2022-11-18 20:06:40,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 232 transitions, 505 flow [2022-11-18 20:06:40,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 232 transitions, 505 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:06:40,971 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 467 flow [2022-11-18 20:06:40,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=227, PETRI_TRANSITIONS=226} [2022-11-18 20:06:40,973 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 1 predicate places. [2022-11-18 20:06:40,973 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 467 flow [2022-11-18 20:06:40,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:40,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:40,975 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:06:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:06:40,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 80166467, now seen corresponding path program 1 times [2022-11-18 20:06:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:40,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212648244] [2022-11-18 20:06:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:40,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:41,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:41,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212648244] [2022-11-18 20:06:41,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212648244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:41,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:41,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290338705] [2022-11-18 20:06:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:41,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 253 [2022-11-18 20:06:41,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 226 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:41,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:41,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 253 [2022-11-18 20:06:41,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:41,190 INFO L130 PetriNetUnfolder]: 6/362 cut-off events. [2022-11-18 20:06:41,191 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:06:41,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 362 events. 6/362 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 545 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 392. Up to 15 conditions per place. [2022-11-18 20:06:41,204 INFO L137 encePairwiseOnDemand]: 250/253 looper letters, 10 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2022-11-18 20:06:41,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 230 transitions, 499 flow [2022-11-18 20:06:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:06:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-18 20:06:41,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985507246376812 [2022-11-18 20:06:41,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-18 20:06:41,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-18 20:06:41,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:41,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-18 20:06:41,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:41,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:41,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:41,215 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 467 flow. Second operand 3 states and 682 transitions. [2022-11-18 20:06:41,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 230 transitions, 499 flow [2022-11-18 20:06:41,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 230 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:41,220 INFO L231 Difference]: Finished difference. Result has 229 places, 227 transitions, 477 flow [2022-11-18 20:06:41,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=229, PETRI_TRANSITIONS=227} [2022-11-18 20:06:41,221 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 3 predicate places. [2022-11-18 20:06:41,222 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 227 transitions, 477 flow [2022-11-18 20:06:41,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:41,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:41,223 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:06:41,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:06:41,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash -692712292, now seen corresponding path program 1 times [2022-11-18 20:06:41,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:41,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133478772] [2022-11-18 20:06:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:41,258 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:41,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082965444] [2022-11-18 20:06:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:41,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:41,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:41,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:41,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:06:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:41,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:41,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:41,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:41,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:41,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133478772] [2022-11-18 20:06:41,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:41,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082965444] [2022-11-18 20:06:41,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082965444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:41,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:41,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:06:41,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987307566] [2022-11-18 20:06:41,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:41,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:06:41,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:41,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:06:41,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:06:41,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 253 [2022-11-18 20:06:41,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 227 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:41,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:41,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 253 [2022-11-18 20:06:41,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:42,018 INFO L130 PetriNetUnfolder]: 6/440 cut-off events. [2022-11-18 20:06:42,018 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 20:06:42,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 440 events. 6/440 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 478 event pairs, 0 based on Foata normal form. 4/435 useless extension candidates. Maximal degree in co-relation 497. Up to 10 conditions per place. [2022-11-18 20:06:42,025 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 11 selfloop transitions, 9 changer transitions 0/237 dead transitions. [2022-11-18 20:06:42,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 237 transitions, 539 flow [2022-11-18 20:06:42,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:06:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:06:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2020 transitions. [2022-11-18 20:06:42,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871321914800175 [2022-11-18 20:06:42,032 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2020 transitions. [2022-11-18 20:06:42,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2020 transitions. [2022-11-18 20:06:42,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:42,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2020 transitions. [2022-11-18 20:06:42,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:42,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:42,059 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:42,059 INFO L175 Difference]: Start difference. First operand has 229 places, 227 transitions, 477 flow. Second operand 9 states and 2020 transitions. [2022-11-18 20:06:42,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 237 transitions, 539 flow [2022-11-18 20:06:42,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 237 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:42,065 INFO L231 Difference]: Finished difference. Result has 239 places, 233 transitions, 525 flow [2022-11-18 20:06:42,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=239, PETRI_TRANSITIONS=233} [2022-11-18 20:06:42,067 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 13 predicate places. [2022-11-18 20:06:42,068 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 233 transitions, 525 flow [2022-11-18 20:06:42,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:42,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:42,069 INFO L209 CegarLoopForPetriNet]: 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, 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] [2022-11-18 20:06:42,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:42,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:42,283 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:42,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:42,283 INFO L85 PathProgramCache]: Analyzing trace with hash -5595908, now seen corresponding path program 2 times [2022-11-18 20:06:42,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:42,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833524614] [2022-11-18 20:06:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:42,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:42,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:42,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812814080] [2022-11-18 20:06:42,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:42,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:42,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:42,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:06:42,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:42,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:42,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:06:42,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:42,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:43,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833524614] [2022-11-18 20:06:43,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:43,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812814080] [2022-11-18 20:06:43,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812814080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:43,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:43,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:06:43,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173981087] [2022-11-18 20:06:43,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:43,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:06:43,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:06:43,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:06:43,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 253 [2022-11-18 20:06:43,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 233 transitions, 525 flow. Second operand has 16 states, 16 states have (on average 224.25) internal successors, (3588), 16 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:43,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:43,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 253 [2022-11-18 20:06:43,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:43,566 INFO L130 PetriNetUnfolder]: 6/736 cut-off events. [2022-11-18 20:06:43,567 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-18 20:06:43,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 736 events. 6/736 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 478 event pairs, 0 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 927. Up to 22 conditions per place. [2022-11-18 20:06:43,573 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 19 selfloop transitions, 21 changer transitions 0/257 dead transitions. [2022-11-18 20:06:43,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 257 transitions, 713 flow [2022-11-18 20:06:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:06:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:06:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4706 transitions. [2022-11-18 20:06:43,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857519292301901 [2022-11-18 20:06:43,584 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4706 transitions. [2022-11-18 20:06:43,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4706 transitions. [2022-11-18 20:06:43,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:43,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4706 transitions. [2022-11-18 20:06:43,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 224.0952380952381) internal successors, (4706), 21 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:43,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:43,612 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:43,612 INFO L175 Difference]: Start difference. First operand has 239 places, 233 transitions, 525 flow. Second operand 21 states and 4706 transitions. [2022-11-18 20:06:43,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 257 transitions, 713 flow [2022-11-18 20:06:43,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 257 transitions, 699 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:43,622 INFO L231 Difference]: Finished difference. Result has 263 places, 246 transitions, 649 flow [2022-11-18 20:06:43,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=649, PETRI_PLACES=263, PETRI_TRANSITIONS=246} [2022-11-18 20:06:43,624 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 37 predicate places. [2022-11-18 20:06:43,625 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 246 transitions, 649 flow [2022-11-18 20:06:43,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 224.25) internal successors, (3588), 16 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:43,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:43,627 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-18 20:06:43,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:43,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:43,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:43,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:43,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1761465788, now seen corresponding path program 3 times [2022-11-18 20:06:43,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:43,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884333563] [2022-11-18 20:06:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:43,910 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:43,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342539689] [2022-11-18 20:06:43,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:06:43,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:43,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:43,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:43,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:06:44,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:06:44,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:44,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:44,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-11-18 20:06:44,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-11-18 20:06:45,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:45,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884333563] [2022-11-18 20:06:45,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:45,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342539689] [2022-11-18 20:06:45,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342539689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:45,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:45,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:06:45,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600729134] [2022-11-18 20:06:45,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:45,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:06:45,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:06:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:06:45,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-18 20:06:45,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 246 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 221.75) internal successors, (1774), 8 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:45,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:45,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-18 20:06:45,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:45,462 INFO L130 PetriNetUnfolder]: 7/1012 cut-off events. [2022-11-18 20:06:45,462 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-18 20:06:45,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 1012 events. 7/1012 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 164 event pairs, 0 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 1334. Up to 33 conditions per place. [2022-11-18 20:06:45,465 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 20 selfloop transitions, 9 changer transitions 0/262 dead transitions. [2022-11-18 20:06:45,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 262 transitions, 741 flow [2022-11-18 20:06:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:06:45,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:06:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2002 transitions. [2022-11-18 20:06:45,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2022-11-18 20:06:45,470 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2002 transitions. [2022-11-18 20:06:45,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2002 transitions. [2022-11-18 20:06:45,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:45,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2002 transitions. [2022-11-18 20:06:45,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.44444444444446) internal successors, (2002), 9 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:45,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:45,482 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:45,482 INFO L175 Difference]: Start difference. First operand has 263 places, 246 transitions, 649 flow. Second operand 9 states and 2002 transitions. [2022-11-18 20:06:45,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 262 transitions, 741 flow [2022-11-18 20:06:45,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 262 transitions, 717 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 20:06:45,490 INFO L231 Difference]: Finished difference. Result has 268 places, 252 transitions, 675 flow [2022-11-18 20:06:45,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=675, PETRI_PLACES=268, PETRI_TRANSITIONS=252} [2022-11-18 20:06:45,491 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 42 predicate places. [2022-11-18 20:06:45,491 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 252 transitions, 675 flow [2022-11-18 20:06:45,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 221.75) internal successors, (1774), 8 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:45,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:45,493 INFO L209 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:06:45,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:45,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:45,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1175865988, now seen corresponding path program 4 times [2022-11-18 20:06:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695853287] [2022-11-18 20:06:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:45,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:45,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201813735] [2022-11-18 20:06:45,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:06:45,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:45,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:45,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:45,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:06:46,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:06:46,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:46,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 3473 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:06:46,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-11-18 20:06:48,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-11-18 20:06:49,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:49,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695853287] [2022-11-18 20:06:49,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:49,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201813735] [2022-11-18 20:06:49,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201813735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:49,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:49,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 20:06:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176138051] [2022-11-18 20:06:49,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:06:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:49,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:06:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:06:49,689 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-18 20:06:49,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 252 transitions, 675 flow. Second operand has 16 states, 16 states have (on average 222.375) internal successors, (3558), 16 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:49,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:49,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-18 20:06:49,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:50,937 INFO L130 PetriNetUnfolder]: 11/2108 cut-off events. [2022-11-18 20:06:50,938 INFO L131 PetriNetUnfolder]: For 346/346 co-relation queries the response was YES. [2022-11-18 20:06:50,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2823 conditions, 2108 events. 11/2108 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 168 event pairs, 0 based on Foata normal form. 4/2103 useless extension candidates. Maximal degree in co-relation 2806. Up to 70 conditions per place. [2022-11-18 20:06:50,945 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 21 changer transitions 0/294 dead transitions. [2022-11-18 20:06:50,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 294 transitions, 941 flow [2022-11-18 20:06:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:06:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:06:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4664 transitions. [2022-11-18 20:06:50,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778467908902692 [2022-11-18 20:06:50,957 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4664 transitions. [2022-11-18 20:06:50,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4664 transitions. [2022-11-18 20:06:50,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:50,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4664 transitions. [2022-11-18 20:06:50,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 222.0952380952381) internal successors, (4664), 21 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:50,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:50,983 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:50,983 INFO L175 Difference]: Start difference. First operand has 268 places, 252 transitions, 675 flow. Second operand 21 states and 4664 transitions. [2022-11-18 20:06:50,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 294 transitions, 941 flow [2022-11-18 20:06:50,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 294 transitions, 927 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:50,991 INFO L231 Difference]: Finished difference. Result has 292 places, 265 transitions, 799 flow [2022-11-18 20:06:50,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=799, PETRI_PLACES=292, PETRI_TRANSITIONS=265} [2022-11-18 20:06:50,992 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 66 predicate places. [2022-11-18 20:06:50,993 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 265 transitions, 799 flow [2022-11-18 20:06:50,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 222.375) internal successors, (3558), 16 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:50,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:50,996 INFO L209 CegarLoopForPetriNet]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-18 20:06:51,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:51,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1653234436, now seen corresponding path program 5 times [2022-11-18 20:06:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862669679] [2022-11-18 20:06:51,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:51,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:51,561 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:51,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872031141] [2022-11-18 20:06:51,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:06:51,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:51,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:51,566 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:51,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7aa1dfa-9d7e-4613-9284-59f2b6f0311f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process