./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN --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 d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- 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-6b4ec56 [2022-11-20 09:28:32,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:32,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:32,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:32,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:32,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:32,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:32,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:32,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:32,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:32,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:32,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:32,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:32,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:32,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:32,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:32,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:32,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:32,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:32,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:32,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:32,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:32,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:32,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:32,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:32,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:32,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:32,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:32,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:32,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:32,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:32,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:32,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:32,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:32,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:32,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:32,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:32,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:32,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:32,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:32,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:32,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:28:32,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:32,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:32,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:32,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:32,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:32,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:32,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:32,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:32,445 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:32,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:32,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:28:32,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:32,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:28:32,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:32,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:28:32,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:32,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:28:32,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:28:32,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:28:32,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:32,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:28:32,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:32,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:32,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:32,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:32,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:32,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:32,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:28:32,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:32,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:32,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:28:32,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:28:32,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:28:32,452 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_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2022-11-20 09:28:32,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:32,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:32,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:32,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:32,739 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:32,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-11-20 09:28:35,982 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:36,188 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:36,189 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-11-20 09:28:36,197 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/data/320fd7812/1ad478eac1e64d008ee9d87545a6259e/FLAGa86043735 [2022-11-20 09:28:36,216 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/data/320fd7812/1ad478eac1e64d008ee9d87545a6259e [2022-11-20 09:28:36,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:36,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:36,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:36,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:36,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:36,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3602da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36, skipping insertion in model container [2022-11-20 09:28:36,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:36,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:36,459 WARN L237 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_bc6894c8-cbf5-4d13-9475-d7d289337468/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-11-20 09:28:36,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:36,481 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:36,508 WARN L237 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_bc6894c8-cbf5-4d13-9475-d7d289337468/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-11-20 09:28:36,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:36,524 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:36,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36 WrapperNode [2022-11-20 09:28:36,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:36,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:36,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:36,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:36,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,565 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-11-20 09:28:36,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:36,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:36,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:36,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:36,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,607 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:36,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:36,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:36,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:36,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (1/1) ... [2022-11-20 09:28:36,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:36,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:36,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:36,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:28:36,705 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:28:36,705 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:28:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:28:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:28:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:28:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:28:36,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 09:28:36,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 09:28:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:28:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:28:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:28:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:28:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:28:36,710 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:28:36,859 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:36,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:37,287 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:37,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:37,297 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 09:28:37,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:37 BoogieIcfgContainer [2022-11-20 09:28:37,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:37,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:37,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:37,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:37,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:36" (1/3) ... [2022-11-20 09:28:37,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5f82bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:37, skipping insertion in model container [2022-11-20 09:28:37,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:36" (2/3) ... [2022-11-20 09:28:37,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5f82bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:37, skipping insertion in model container [2022-11-20 09:28:37,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:37" (3/3) ... [2022-11-20 09:28:37,310 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-11-20 09:28:37,321 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:28:37,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:37,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:28:37,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:28:37,436 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 09:28:37,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2022-11-20 09:28:37,649 INFO L130 PetriNetUnfolder]: 10/145 cut-off events. [2022-11-20 09:28:37,649 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 09:28:37,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-11-20 09:28:37,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2022-11-20 09:28:37,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2022-11-20 09:28:37,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:37,695 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;@43fa833e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:37,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 09:28:37,743 INFO L130 PetriNetUnfolder]: 10/131 cut-off events. [2022-11-20 09:28:37,744 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 09:28:37,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:37,751 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:37,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:28:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash -322697145, now seen corresponding path program 1 times [2022-11-20 09:28:37,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:37,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789774367] [2022-11-20 09:28:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:37,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:38,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:38,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789774367] [2022-11-20 09:28:38,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789774367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:38,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:38,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:38,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957264824] [2022-11-20 09:28:38,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:38,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:28:38,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:38,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:28:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:28:38,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 149 [2022-11-20 09:28:38,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:38,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 149 [2022-11-20 09:28:38,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:38,337 INFO L130 PetriNetUnfolder]: 4/126 cut-off events. [2022-11-20 09:28:38,338 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-20 09:28:38,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 126 events. 4/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 18/138 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2022-11-20 09:28:38,341 INFO L137 encePairwiseOnDemand]: 143/149 looper letters, 8 selfloop transitions, 0 changer transitions 2/126 dead transitions. [2022-11-20 09:28:38,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 292 flow [2022-11-20 09:28:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:28:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 09:28:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 282 transitions. [2022-11-20 09:28:38,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9463087248322147 [2022-11-20 09:28:38,358 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 282 transitions. [2022-11-20 09:28:38,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 282 transitions. [2022-11-20 09:28:38,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:38,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 282 transitions. [2022-11-20 09:28:38,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,387 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,390 INFO L175 Difference]: Start difference. First operand has 135 places, 132 transitions, 288 flow. Second operand 2 states and 282 transitions. [2022-11-20 09:28:38,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 292 flow [2022-11-20 09:28:38,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 276 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 09:28:38,402 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 256 flow [2022-11-20 09:28:38,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2022-11-20 09:28:38,412 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, -7 predicate places. [2022-11-20 09:28:38,412 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 256 flow [2022-11-20 09:28:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:38,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:38,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:38,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:28:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash 735830245, now seen corresponding path program 1 times [2022-11-20 09:28:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:38,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908251348] [2022-11-20 09:28:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:39,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:39,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908251348] [2022-11-20 09:28:39,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908251348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:39,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:39,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:39,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510012839] [2022-11-20 09:28:39,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:39,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:39,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:39,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:39,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 149 [2022-11-20 09:28:39,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:39,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:39,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 149 [2022-11-20 09:28:39,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:45,257 INFO L130 PetriNetUnfolder]: 24847/33450 cut-off events. [2022-11-20 09:28:45,257 INFO L131 PetriNetUnfolder]: For 860/934 co-relation queries the response was YES. [2022-11-20 09:28:45,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67538 conditions, 33450 events. 24847/33450 cut-off events. For 860/934 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 187470 event pairs, 11708 based on Foata normal form. 1/29664 useless extension candidates. Maximal degree in co-relation 67535. Up to 32788 conditions per place. [2022-11-20 09:28:45,542 INFO L137 encePairwiseOnDemand]: 139/149 looper letters, 71 selfloop transitions, 7 changer transitions 4/146 dead transitions. [2022-11-20 09:28:45,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 146 transitions, 471 flow [2022-11-20 09:28:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:45,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2022-11-20 09:28:45,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6164908916586769 [2022-11-20 09:28:45,549 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2022-11-20 09:28:45,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2022-11-20 09:28:45,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:45,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2022-11-20 09:28:45,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:45,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:45,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:45,565 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 256 flow. Second operand 7 states and 643 transitions. [2022-11-20 09:28:45,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 146 transitions, 471 flow [2022-11-20 09:28:45,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:28:45,569 INFO L231 Difference]: Finished difference. Result has 135 places, 128 transitions, 297 flow [2022-11-20 09:28:45,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2022-11-20 09:28:45,571 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 0 predicate places. [2022-11-20 09:28:45,572 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 297 flow [2022-11-20 09:28:45,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:45,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:45,573 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:45,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:28:45,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:28:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1042539278, now seen corresponding path program 1 times [2022-11-20 09:28:45,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:45,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095657641] [2022-11-20 09:28:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:45,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:46,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:46,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095657641] [2022-11-20 09:28:46,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095657641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:46,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:46,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:46,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7717115] [2022-11-20 09:28:46,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:46,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:46,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:46,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-11-20 09:28:46,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:46,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:46,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-11-20 09:28:46,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:47,897 INFO L130 PetriNetUnfolder]: 5400/8478 cut-off events. [2022-11-20 09:28:47,898 INFO L131 PetriNetUnfolder]: For 879/948 co-relation queries the response was YES. [2022-11-20 09:28:47,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16984 conditions, 8478 events. 5400/8478 cut-off events. For 879/948 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 53561 event pairs, 892 based on Foata normal form. 4/6419 useless extension candidates. Maximal degree in co-relation 16977. Up to 5921 conditions per place. [2022-11-20 09:28:48,047 INFO L137 encePairwiseOnDemand]: 136/149 looper letters, 76 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2022-11-20 09:28:48,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 177 transitions, 618 flow [2022-11-20 09:28:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 764 transitions. [2022-11-20 09:28:48,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7325023969319271 [2022-11-20 09:28:48,051 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 764 transitions. [2022-11-20 09:28:48,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 764 transitions. [2022-11-20 09:28:48,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:48,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 764 transitions. [2022-11-20 09:28:48,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:48,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:48,073 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:48,073 INFO L175 Difference]: Start difference. First operand has 135 places, 128 transitions, 297 flow. Second operand 7 states and 764 transitions. [2022-11-20 09:28:48,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 177 transitions, 618 flow [2022-11-20 09:28:48,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 177 transitions, 599 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-20 09:28:48,082 INFO L231 Difference]: Finished difference. Result has 137 places, 138 transitions, 390 flow [2022-11-20 09:28:48,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=137, PETRI_TRANSITIONS=138} [2022-11-20 09:28:48,085 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 2 predicate places. [2022-11-20 09:28:48,085 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 138 transitions, 390 flow [2022-11-20 09:28:48,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:48,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:48,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:48,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:28:48,087 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:28:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash 637841870, now seen corresponding path program 1 times [2022-11-20 09:28:48,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:48,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563797023] [2022-11-20 09:28:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:48,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:48,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563797023] [2022-11-20 09:28:48,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563797023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:48,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640946175] [2022-11-20 09:28:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:48,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:48,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:48,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:48,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:28:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:48,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:28:48,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:49,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:49,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640946175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:49,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:49,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-11-20 09:28:49,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620287880] [2022-11-20 09:28:49,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:49,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:28:49,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:49,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:28:49,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:49,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-11-20 09:28:49,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 138 transitions, 390 flow. Second operand has 14 states, 14 states have (on average 82.78571428571429) internal successors, (1159), 14 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:49,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:49,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-11-20 09:28:49,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:57,824 INFO L130 PetriNetUnfolder]: 39810/59465 cut-off events. [2022-11-20 09:28:57,825 INFO L131 PetriNetUnfolder]: For 24175/24197 co-relation queries the response was YES. [2022-11-20 09:28:58,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136106 conditions, 59465 events. 39810/59465 cut-off events. For 24175/24197 co-relation queries the response was YES. Maximal size of possible extension queue 2161. Compared 436919 event pairs, 16643 based on Foata normal form. 0/56183 useless extension candidates. Maximal degree in co-relation 136098. Up to 34314 conditions per place. [2022-11-20 09:28:58,411 INFO L137 encePairwiseOnDemand]: 134/149 looper letters, 283 selfloop transitions, 30 changer transitions 1/376 dead transitions. [2022-11-20 09:28:58,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 376 transitions, 1872 flow [2022-11-20 09:28:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 09:28:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1360 transitions. [2022-11-20 09:28:58,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6519654841802492 [2022-11-20 09:28:58,423 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1360 transitions. [2022-11-20 09:28:58,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1360 transitions. [2022-11-20 09:28:58,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:58,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1360 transitions. [2022-11-20 09:28:58,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 14 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:58,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:58,436 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 149.0) internal successors, (2235), 15 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:58,436 INFO L175 Difference]: Start difference. First operand has 137 places, 138 transitions, 390 flow. Second operand 14 states and 1360 transitions. [2022-11-20 09:28:58,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 376 transitions, 1872 flow [2022-11-20 09:28:58,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 376 transitions, 1868 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:28:58,476 INFO L231 Difference]: Finished difference. Result has 157 places, 156 transitions, 597 flow [2022-11-20 09:28:58,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=597, PETRI_PLACES=157, PETRI_TRANSITIONS=156} [2022-11-20 09:28:58,478 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 22 predicate places. [2022-11-20 09:28:58,479 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 156 transitions, 597 flow [2022-11-20 09:28:58,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.78571428571429) internal successors, (1159), 14 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:58,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:58,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:58,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:58,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:58,688 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:28:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2018034240, now seen corresponding path program 2 times [2022-11-20 09:28:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:58,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946963941] [2022-11-20 09:28:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:59,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:59,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946963941] [2022-11-20 09:28:59,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946963941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:59,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:59,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358769866] [2022-11-20 09:28:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:59,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:59,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-11-20 09:28:59,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 156 transitions, 597 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:28:59,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:59,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-11-20 09:28:59,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:00,582 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L38-1-->L38-2: Formula: (not (< (mod v_~x1~0_1 4294967296) (mod v_~n~0_1 4294967296))) InVars {~n~0=v_~n~0_1, ~x1~0=v_~x1~0_1} OutVars{~n~0=v_~n~0_1, ~x1~0=v_~x1~0_1} AuxVars[] AssignedVars[][87], [30#L109-4true, 42#L38-2true, 18#L67true, 189#true, 91#L54true, Black: 162#(and (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296)))), 155#true, Black: 808#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< 0 (mod ~x1~0 4294967296))), Black: 195#(<= (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296))), Black: 806#(and (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x2~0 4294967296)) (< ~x2~0 (+ (mod ~x1~0 4294967296) (* (div ~x2~0 4294967296) 4294967296) 1))), Black: 810#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x1~0 4294967296))), Black: 804#(and (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (not (<= ~x1~0 (* (div ~x1~0 4294967296) 4294967296))) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (not (<= ~x3~0 (* (div ~x3~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (<= (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296)))), Black: 802#(and (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div ~x3~0 4294967296) 4294967296) ~x3~0) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (< (* (div ~x1~0 4294967296) 4294967296) ~x1~0)), Black: 814#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (< 0 (mod ~x1~0 4294967296))), Black: 388#(and (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x2~0 4294967296))), Black: 179#(<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296))), 834#(and (<= (+ ~x3~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x3~0 4294967296) 4294967296))) (<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)))), Black: 180#(<= (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296))), 184#(and (<= (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296))) (<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)))), 121#L80-2true]) [2022-11-20 09:29:00,583 INFO L383 tUnfolder$Statistics]: this new event has 80 ancestors and is cut-off event [2022-11-20 09:29:00,583 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-11-20 09:29:00,583 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-11-20 09:29:00,583 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-20 09:29:02,038 INFO L130 PetriNetUnfolder]: 11236/17917 cut-off events. [2022-11-20 09:29:02,038 INFO L131 PetriNetUnfolder]: For 37018/38155 co-relation queries the response was YES. [2022-11-20 09:29:02,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54775 conditions, 17917 events. 11236/17917 cut-off events. For 37018/38155 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 141626 event pairs, 2629 based on Foata normal form. 460/17694 useless extension candidates. Maximal degree in co-relation 54758. Up to 11609 conditions per place. [2022-11-20 09:29:02,245 INFO L137 encePairwiseOnDemand]: 138/149 looper letters, 105 selfloop transitions, 22 changer transitions 0/214 dead transitions. [2022-11-20 09:29:02,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 214 transitions, 1137 flow [2022-11-20 09:29:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:29:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 764 transitions. [2022-11-20 09:29:02,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7325023969319271 [2022-11-20 09:29:02,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 764 transitions. [2022-11-20 09:29:02,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 764 transitions. [2022-11-20 09:29:02,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:02,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 764 transitions. [2022-11-20 09:29:02,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:02,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:02,253 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:02,253 INFO L175 Difference]: Start difference. First operand has 157 places, 156 transitions, 597 flow. Second operand 7 states and 764 transitions. [2022-11-20 09:29:02,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 214 transitions, 1137 flow [2022-11-20 09:29:02,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 214 transitions, 1122 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:29:02,289 INFO L231 Difference]: Finished difference. Result has 163 places, 160 transitions, 692 flow [2022-11-20 09:29:02,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=692, PETRI_PLACES=163, PETRI_TRANSITIONS=160} [2022-11-20 09:29:02,292 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 28 predicate places. [2022-11-20 09:29:02,292 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 160 transitions, 692 flow [2022-11-20 09:29:02,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:02,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:02,294 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:02,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:29:02,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:29:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash -907115666, now seen corresponding path program 1 times [2022-11-20 09:29:02,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:02,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057593350] [2022-11-20 09:29:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:02,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:02,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:02,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057593350] [2022-11-20 09:29:02,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057593350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:02,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:02,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:02,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617444874] [2022-11-20 09:29:02,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:02,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:02,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:02,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:02,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-11-20 09:29:02,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 160 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:02,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:02,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-11-20 09:29:02,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:10,991 INFO L130 PetriNetUnfolder]: 42908/63059 cut-off events. [2022-11-20 09:29:10,992 INFO L131 PetriNetUnfolder]: For 123256/123340 co-relation queries the response was YES. [2022-11-20 09:29:11,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190907 conditions, 63059 events. 42908/63059 cut-off events. For 123256/123340 co-relation queries the response was YES. Maximal size of possible extension queue 2196. Compared 453037 event pairs, 29835 based on Foata normal form. 34/62765 useless extension candidates. Maximal degree in co-relation 190886. Up to 57668 conditions per place. [2022-11-20 09:29:11,640 INFO L137 encePairwiseOnDemand]: 138/149 looper letters, 112 selfloop transitions, 16 changer transitions 5/195 dead transitions. [2022-11-20 09:29:11,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 195 transitions, 1197 flow [2022-11-20 09:29:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:29:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 09:29:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 562 transitions. [2022-11-20 09:29:11,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6286353467561522 [2022-11-20 09:29:11,650 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 562 transitions. [2022-11-20 09:29:11,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 562 transitions. [2022-11-20 09:29:11,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:11,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 562 transitions. [2022-11-20 09:29:11,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:11,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:11,656 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:11,657 INFO L175 Difference]: Start difference. First operand has 163 places, 160 transitions, 692 flow. Second operand 6 states and 562 transitions. [2022-11-20 09:29:11,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 195 transitions, 1197 flow [2022-11-20 09:29:11,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 195 transitions, 1185 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-20 09:29:11,997 INFO L231 Difference]: Finished difference. Result has 168 places, 165 transitions, 803 flow [2022-11-20 09:29:11,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=803, PETRI_PLACES=168, PETRI_TRANSITIONS=165} [2022-11-20 09:29:11,998 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 33 predicate places. [2022-11-20 09:29:11,998 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 165 transitions, 803 flow [2022-11-20 09:29:11,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:11,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:11,999 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:12,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:29:12,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:29:12,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1482922462, now seen corresponding path program 1 times [2022-11-20 09:29:12,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:12,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191355695] [2022-11-20 09:29:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:12,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:12,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:12,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191355695] [2022-11-20 09:29:12,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191355695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:12,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:12,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:29:12,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915333290] [2022-11-20 09:29:12,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:12,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:29:12,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:12,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:29:12,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:12,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-11-20 09:29:12,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 165 transitions, 803 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:12,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:12,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-11-20 09:29:12,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:23,258 INFO L130 PetriNetUnfolder]: 52329/78245 cut-off events. [2022-11-20 09:29:23,258 INFO L131 PetriNetUnfolder]: For 166341/166410 co-relation queries the response was YES. [2022-11-20 09:29:23,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238461 conditions, 78245 events. 52329/78245 cut-off events. For 166341/166410 co-relation queries the response was YES. Maximal size of possible extension queue 2991. Compared 603008 event pairs, 24152 based on Foata normal form. 1360/79222 useless extension candidates. Maximal degree in co-relation 238437. Up to 50836 conditions per place. [2022-11-20 09:29:24,135 INFO L137 encePairwiseOnDemand]: 139/149 looper letters, 165 selfloop transitions, 22 changer transitions 2/251 dead transitions. [2022-11-20 09:29:24,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 251 transitions, 1687 flow [2022-11-20 09:29:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:29:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 677 transitions. [2022-11-20 09:29:24,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6490891658676894 [2022-11-20 09:29:24,138 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 677 transitions. [2022-11-20 09:29:24,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 677 transitions. [2022-11-20 09:29:24,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:24,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 677 transitions. [2022-11-20 09:29:24,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:24,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:24,145 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:24,145 INFO L175 Difference]: Start difference. First operand has 168 places, 165 transitions, 803 flow. Second operand 7 states and 677 transitions. [2022-11-20 09:29:24,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 251 transitions, 1687 flow [2022-11-20 09:29:25,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 251 transitions, 1629 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-11-20 09:29:25,772 INFO L231 Difference]: Finished difference. Result has 175 places, 170 transitions, 905 flow [2022-11-20 09:29:25,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=905, PETRI_PLACES=175, PETRI_TRANSITIONS=170} [2022-11-20 09:29:25,772 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 40 predicate places. [2022-11-20 09:29:25,772 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 170 transitions, 905 flow [2022-11-20 09:29:25,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:25,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:25,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:25,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:29:25,774 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:29:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1881884424, now seen corresponding path program 2 times [2022-11-20 09:29:25,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:25,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645088681] [2022-11-20 09:29:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:25,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:26,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:26,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645088681] [2022-11-20 09:29:26,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645088681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:26,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:26,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:29:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500684943] [2022-11-20 09:29:26,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:29:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:29:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:29:26,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 149 [2022-11-20 09:29:26,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 170 transitions, 905 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:26,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:26,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 149 [2022-11-20 09:29:26,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:27,047 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L38-1-->L38-2: Formula: (not (< (mod v_~x1~0_1 4294967296) (mod v_~n~0_1 4294967296))) InVars {~n~0=v_~n~0_1, ~x1~0=v_~x1~0_1} OutVars{~n~0=v_~n~0_1, ~x1~0=v_~x1~0_1} AuxVars[] AssignedVars[][66], [30#L109-4true, 42#L38-2true, 189#true, 18#L67true, Black: 830#(<= (+ ~x3~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x3~0 4294967296) 4294967296))), Black: 829#(<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296))), 869#(<= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))), Black: 825#true, 91#L54true, 155#true, Black: 844#(and (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (< (* (div ~x3~0 4294967296) 4294967296) ~x3~0) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (< (* (div ~x1~0 4294967296) 4294967296) ~x1~0)), Black: 845#(and (not (<= ~x1~0 (* (div ~x1~0 4294967296) 4294967296))) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (<= (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296)) (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296))) (not (<= ~x3~0 (* (div ~x3~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296)))), 834#(and (<= (+ ~x3~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x3~0 4294967296) 4294967296))) (<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)))), Black: 851#true, Black: 856#(and (<= (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296))) (not (<= ~x1~0 (* (div ~x1~0 4294967296) 4294967296))) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (not (<= ~x3~0 (* (div ~x3~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296)))), Black: 855#(and (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (< (* (div ~x3~0 4294967296) 4294967296) ~x3~0) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (< (* (div ~x1~0 4294967296) 4294967296) ~x1~0)), Black: 162#(and (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296)))), Black: 808#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< 0 (mod ~x1~0 4294967296))), Black: 195#(<= (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296))), Black: 806#(and (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x2~0 4294967296)) (< ~x2~0 (+ (mod ~x1~0 4294967296) (* (div ~x2~0 4294967296) 4294967296) 1))), Black: 810#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x1~0 4294967296))), 179#(<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296))), Black: 804#(and (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (not (<= ~x1~0 (* (div ~x1~0 4294967296) 4294967296))) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (not (<= ~x3~0 (* (div ~x3~0 4294967296) 4294967296))) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (<= (+ ~x2~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x2~0 4294967296) 4294967296)))), Black: 802#(and (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (= (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)) (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296))) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (< (* (div ~x3~0 4294967296) 4294967296) ~x3~0) (= (+ (* (div ~x1~0 4294967296) 4294967296) ~x2~0) (+ ~x1~0 (* (div ~x2~0 4294967296) 4294967296))) (< (* (div ~x1~0 4294967296) 4294967296) ~x1~0)), Black: 814#(and (= (mod ~x2~0 4294967296) (mod ~x1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (< 0 (mod ~x1~0 4294967296))), Black: 388#(and (< (mod ~x2~0 4294967296) (mod ~n~0 4294967296)) (< 0 (mod ~x2~0 4294967296))), Black: 180#(<= (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296))), Black: 184#(and (<= (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296))) (<= (+ ~x3~0 (* (div ~x4~0 4294967296) 4294967296)) (+ ~x4~0 (* (div ~x3~0 4294967296) 4294967296)))), 857#(<= (+ ~x4~0 (* (div ~n~0 4294967296) 4294967296) 1) (+ ~n~0 (* (div ~x4~0 4294967296) 4294967296))), 55#L81true]) [2022-11-20 09:29:27,047 INFO L383 tUnfolder$Statistics]: this new event has 72 ancestors and is cut-off event [2022-11-20 09:29:27,047 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-20 09:29:27,047 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-20 09:29:27,047 INFO L386 tUnfolder$Statistics]: existing Event has 72 ancestors and is cut-off event [2022-11-20 09:29:29,078 INFO L130 PetriNetUnfolder]: 13130/21980 cut-off events. [2022-11-20 09:29:29,078 INFO L131 PetriNetUnfolder]: For 63017/64060 co-relation queries the response was YES. [2022-11-20 09:29:29,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74958 conditions, 21980 events. 13130/21980 cut-off events. For 63017/64060 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 188344 event pairs, 4826 based on Foata normal form. 164/20930 useless extension candidates. Maximal degree in co-relation 74931. Up to 15223 conditions per place. [2022-11-20 09:29:29,279 INFO L137 encePairwiseOnDemand]: 137/149 looper letters, 115 selfloop transitions, 21 changer transitions 2/227 dead transitions. [2022-11-20 09:29:29,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 227 transitions, 1479 flow [2022-11-20 09:29:29,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:29:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:29:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2022-11-20 09:29:29,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7315436241610739 [2022-11-20 09:29:29,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2022-11-20 09:29:29,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2022-11-20 09:29:29,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:29,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2022-11-20 09:29:29,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:29,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:29,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 149.0) internal successors, (1192), 8 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:29,287 INFO L175 Difference]: Start difference. First operand has 175 places, 170 transitions, 905 flow. Second operand 7 states and 763 transitions. [2022-11-20 09:29:29,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 227 transitions, 1479 flow [2022-11-20 09:29:29,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 227 transitions, 1475 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:29:29,428 INFO L231 Difference]: Finished difference. Result has 182 places, 172 transitions, 967 flow [2022-11-20 09:29:29,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=967, PETRI_PLACES=182, PETRI_TRANSITIONS=172} [2022-11-20 09:29:29,429 INFO L288 CegarLoopForPetriNet]: 135 programPoint places, 47 predicate places. [2022-11-20 09:29:29,429 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 172 transitions, 967 flow [2022-11-20 09:29:29,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:29,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:29,430 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:29:29,430 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:29:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash -458456338, now seen corresponding path program 2 times [2022-11-20 09:29:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:29,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622046743] [2022-11-20 09:29:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:29,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:29,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622046743] [2022-11-20 09:29:29,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622046743] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:29,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686668819] [2022-11-20 09:29:29,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:29,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:29,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:29,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:29,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc6894c8-cbf5-4d13-9475-d7d289337468/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:29:29,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:29:29,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:29,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:29:29,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:30,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:30,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686668819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:30,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:30,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-11-20 09:29:30,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95714881] [2022-11-20 09:29:30,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:29:30,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:30,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:29:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:29:30,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 149 [2022-11-20 09:29:30,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 172 transitions, 967 flow. Second operand has 14 states, 14 states have (on average 82.71428571428571) internal successors, (1158), 14 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:29:30,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:30,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 149 [2022-11-20 09:29:30,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand