./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ --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 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --- 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-dbf71c6-m [2022-10-17 11:04:51,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:04:51,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:04:51,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:04:51,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:04:51,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:04:51,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:04:51,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:04:51,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:04:51,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:04:51,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:04:51,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:04:51,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:04:51,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:04:51,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:04:51,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:04:51,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:04:51,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:04:51,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:04:51,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:04:51,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:04:51,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:04:51,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:04:51,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:04:51,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:04:51,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:04:51,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:04:51,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:04:51,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:04:51,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:04:51,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:04:51,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:04:51,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:04:51,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:04:51,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:04:51,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:04:51,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:04:51,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:04:51,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:04:51,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:04:51,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:04:51,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:04:51,715 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:04:51,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:04:51,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:04:51,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:04:51,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:04:51,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:04:51,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:04:51,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:04:51,718 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:04:51,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:04:51,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:04:51,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:04:51,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:04:51,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:04:51,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:04:51,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:04:51,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:04:51,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:04:51,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:04:51,722 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:04:51,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:04:51,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:04:51,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:04:51,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:04:51,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:51,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:04:51,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:04:51,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:04:51,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:04:51,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:04:51,726 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:04:51,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:04:51,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:04:51,727 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_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 [2022-10-17 11:04:51,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:04:51,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:04:51,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:04:52,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:04:52,002 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:04:52,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-10-17 11:04:52,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/data/92f3e351b/00d7521471b24dab878c5ef09e4fb033/FLAG6759d3e59 [2022-10-17 11:04:52,541 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:04:52,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-10-17 11:04:52,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/data/92f3e351b/00d7521471b24dab878c5ef09e4fb033/FLAG6759d3e59 [2022-10-17 11:04:52,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/data/92f3e351b/00d7521471b24dab878c5ef09e4fb033 [2022-10-17 11:04:52,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:04:52,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:04:52,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:52,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:04:52,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:04:52,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:52" (1/1) ... [2022-10-17 11:04:52,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72921848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:52, skipping insertion in model container [2022-10-17 11:04:52,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:52" (1/1) ... [2022-10-17 11:04:52,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:04:52,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:04:53,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c[2808,2821] [2022-10-17 11:04:53,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:53,226 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:04:53,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c[2808,2821] [2022-10-17 11:04:53,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:53,306 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:04:53,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53 WrapperNode [2022-10-17 11:04:53,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:53,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:53,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:04:53,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:04:53,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,401 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 183 [2022-10-17 11:04:53,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:53,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:04:53,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:04:53,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:04:53,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:04:53,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:04:53,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:04:53,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:04:53,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:53,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:53,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:04:53,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:04:53,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:04:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 11:04:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 11:04:53,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 11:04:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 11:04:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:04:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:04:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:04:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:04:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:04:53,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:04:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:04:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:04:53,532 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 11:04:53,637 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:04:53,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:04:54,187 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:04:54,201 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:04:54,202 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 11:04:54,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:54 BoogieIcfgContainer [2022-10-17 11:04:54,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:04:54,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:04:54,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:04:54,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:04:54,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:04:52" (1/3) ... [2022-10-17 11:04:54,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a33c633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:04:54, skipping insertion in model container [2022-10-17 11:04:54,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53" (2/3) ... [2022-10-17 11:04:54,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a33c633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:04:54, skipping insertion in model container [2022-10-17 11:04:54,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:04:54" (3/3) ... [2022-10-17 11:04:54,216 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2022-10-17 11:04:54,226 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 11:04:54,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:04:54,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:04:54,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 11:04:54,374 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 11:04:54,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 239 transitions, 494 flow [2022-10-17 11:04:54,561 INFO L130 PetriNetUnfolder]: 21/237 cut-off events. [2022-10-17 11:04:54,561 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:04:54,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 21/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 413 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-10-17 11:04:54,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 239 transitions, 494 flow [2022-10-17 11:04:54,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 228 transitions, 468 flow [2022-10-17 11:04:54,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:04:54,602 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;@58117c52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:04:54,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 11:04:54,711 INFO L130 PetriNetUnfolder]: 18/198 cut-off events. [2022-10-17 11:04:54,711 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 11:04:54,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:54,712 INFO L208 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] [2022-10-17 11:04:54,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:04:54,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:54,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1600668032, now seen corresponding path program 1 times [2022-10-17 11:04:54,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:54,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775574941] [2022-10-17 11:04:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:54,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:55,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775574941] [2022-10-17 11:04:55,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775574941] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:55,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:55,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:04:55,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365429136] [2022-10-17 11:04:55,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:55,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:04:55,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:55,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:04:55,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:04:55,752 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 239 [2022-10-17 11:04:55,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 228 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:55,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:55,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 239 [2022-10-17 11:04:55,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:56,137 INFO L130 PetriNetUnfolder]: 161/785 cut-off events. [2022-10-17 11:04:56,137 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-10-17 11:04:56,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 785 events. 161/785 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3648 event pairs, 46 based on Foata normal form. 68/729 useless extension candidates. Maximal degree in co-relation 967. Up to 216 conditions per place. [2022-10-17 11:04:56,151 INFO L137 encePairwiseOnDemand]: 219/239 looper letters, 40 selfloop transitions, 4 changer transitions 4/226 dead transitions. [2022-10-17 11:04:56,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 226 transitions, 558 flow [2022-10-17 11:04:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:04:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 11:04:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 835 transitions. [2022-10-17 11:04:56,180 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8734309623430963 [2022-10-17 11:04:56,181 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 835 transitions. [2022-10-17 11:04:56,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 835 transitions. [2022-10-17 11:04:56,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:56,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 835 transitions. [2022-10-17 11:04:56,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:56,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:56,212 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:56,214 INFO L175 Difference]: Start difference. First operand has 214 places, 228 transitions, 468 flow. Second operand 4 states and 835 transitions. [2022-10-17 11:04:56,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 226 transitions, 558 flow [2022-10-17 11:04:56,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 226 transitions, 546 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 11:04:56,231 INFO L231 Difference]: Finished difference. Result has 215 places, 212 transitions, 449 flow [2022-10-17 11:04:56,234 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=449, PETRI_PLACES=215, PETRI_TRANSITIONS=212} [2022-10-17 11:04:56,241 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2022-10-17 11:04:56,241 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 212 transitions, 449 flow [2022-10-17 11:04:56,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:56,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:56,245 INFO L208 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, 1, 1, 1, 1, 1] [2022-10-17 11:04:56,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:04:56,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:04:56,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 724912626, now seen corresponding path program 1 times [2022-10-17 11:04:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:56,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856029462] [2022-10-17 11:04:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:56,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:56,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856029462] [2022-10-17 11:04:56,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856029462] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:56,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:56,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:04:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740969851] [2022-10-17 11:04:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:56,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:04:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:04:56,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:04:56,933 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-10-17 11:04:56,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 212 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:56,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:56,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-10-17 11:04:56,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:57,629 INFO L130 PetriNetUnfolder]: 366/1824 cut-off events. [2022-10-17 11:04:57,630 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-10-17 11:04:57,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1824 events. 366/1824 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 12840 event pairs, 141 based on Foata normal form. 2/1626 useless extension candidates. Maximal degree in co-relation 2031. Up to 363 conditions per place. [2022-10-17 11:04:57,648 INFO L137 encePairwiseOnDemand]: 231/239 looper letters, 94 selfloop transitions, 7 changer transitions 0/276 dead transitions. [2022-10-17 11:04:57,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 276 transitions, 829 flow [2022-10-17 11:04:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:04:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 11:04:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2022-10-17 11:04:57,654 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8556485355648535 [2022-10-17 11:04:57,655 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2022-10-17 11:04:57,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2022-10-17 11:04:57,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:57,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2022-10-17 11:04:57,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:57,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:57,667 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:57,667 INFO L175 Difference]: Start difference. First operand has 215 places, 212 transitions, 449 flow. Second operand 6 states and 1227 transitions. [2022-10-17 11:04:57,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 276 transitions, 829 flow [2022-10-17 11:04:57,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 276 transitions, 819 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 11:04:57,682 INFO L231 Difference]: Finished difference. Result has 218 places, 216 transitions, 490 flow [2022-10-17 11:04:57,683 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=218, PETRI_TRANSITIONS=216} [2022-10-17 11:04:57,684 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-10-17 11:04:57,684 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 216 transitions, 490 flow [2022-10-17 11:04:57,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:57,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:57,687 INFO L208 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, 1, 1, 1, 1, 1] [2022-10-17 11:04:57,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:04:57,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:04:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:57,689 INFO L85 PathProgramCache]: Analyzing trace with hash 269032412, now seen corresponding path program 2 times [2022-10-17 11:04:57,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:57,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640046334] [2022-10-17 11:04:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:57,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:58,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:58,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640046334] [2022-10-17 11:04:58,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640046334] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:58,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:58,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:04:58,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446324995] [2022-10-17 11:04:58,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:58,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:04:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:04:58,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:04:58,215 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2022-10-17 11:04:58,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 216 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:58,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:58,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2022-10-17 11:04:58,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:58,743 INFO L130 PetriNetUnfolder]: 222/1265 cut-off events. [2022-10-17 11:04:58,744 INFO L131 PetriNetUnfolder]: For 252/307 co-relation queries the response was YES. [2022-10-17 11:04:58,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1912 conditions, 1265 events. 222/1265 cut-off events. For 252/307 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8708 event pairs, 119 based on Foata normal form. 55/1226 useless extension candidates. Maximal degree in co-relation 1252. Up to 296 conditions per place. [2022-10-17 11:04:58,757 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 54 selfloop transitions, 10 changer transitions 0/242 dead transitions. [2022-10-17 11:04:58,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 242 transitions, 705 flow [2022-10-17 11:04:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:04:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 11:04:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1394 transitions. [2022-10-17 11:04:58,766 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8332337118947998 [2022-10-17 11:04:58,766 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1394 transitions. [2022-10-17 11:04:58,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1394 transitions. [2022-10-17 11:04:58,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:58,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1394 transitions. [2022-10-17 11:04:58,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.14285714285714) internal successors, (1394), 7 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:58,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:58,784 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:58,784 INFO L175 Difference]: Start difference. First operand has 218 places, 216 transitions, 490 flow. Second operand 7 states and 1394 transitions. [2022-10-17 11:04:58,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 242 transitions, 705 flow [2022-10-17 11:04:58,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 242 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:04:58,794 INFO L231 Difference]: Finished difference. Result has 226 places, 219 transitions, 531 flow [2022-10-17 11:04:58,795 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=226, PETRI_TRANSITIONS=219} [2022-10-17 11:04:58,798 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 12 predicate places. [2022-10-17 11:04:58,798 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 219 transitions, 531 flow [2022-10-17 11:04:58,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:58,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:58,800 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:58,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:04:58,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:04:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash -445000328, now seen corresponding path program 1 times [2022-10-17 11:04:58,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:58,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980329112] [2022-10-17 11:04:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:58,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:04:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:04:59,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:04:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980329112] [2022-10-17 11:04:59,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980329112] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:04:59,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:04:59,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:04:59,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096072751] [2022-10-17 11:04:59,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:04:59,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:04:59,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:04:59,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:04:59,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:04:59,223 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-10-17 11:04:59,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 219 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:59,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:04:59,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-10-17 11:04:59,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:04:59,822 INFO L130 PetriNetUnfolder]: 498/2523 cut-off events. [2022-10-17 11:04:59,822 INFO L131 PetriNetUnfolder]: For 709/709 co-relation queries the response was YES. [2022-10-17 11:04:59,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4072 conditions, 2523 events. 498/2523 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 19646 event pairs, 212 based on Foata normal form. 11/2359 useless extension candidates. Maximal degree in co-relation 3235. Up to 532 conditions per place. [2022-10-17 11:04:59,847 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 82 selfloop transitions, 11 changer transitions 0/269 dead transitions. [2022-10-17 11:04:59,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 269 transitions, 879 flow [2022-10-17 11:04:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:04:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 11:04:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1408 transitions. [2022-10-17 11:04:59,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8416019127316199 [2022-10-17 11:04:59,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1408 transitions. [2022-10-17 11:04:59,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1408 transitions. [2022-10-17 11:04:59,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:04:59,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1408 transitions. [2022-10-17 11:04:59,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.14285714285714) internal successors, (1408), 7 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:59,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:59,866 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:59,866 INFO L175 Difference]: Start difference. First operand has 226 places, 219 transitions, 531 flow. Second operand 7 states and 1408 transitions. [2022-10-17 11:04:59,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 269 transitions, 879 flow [2022-10-17 11:04:59,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 269 transitions, 866 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 11:04:59,878 INFO L231 Difference]: Finished difference. Result has 233 places, 224 transitions, 590 flow [2022-10-17 11:04:59,878 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=233, PETRI_TRANSITIONS=224} [2022-10-17 11:04:59,879 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 19 predicate places. [2022-10-17 11:04:59,879 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 224 transitions, 590 flow [2022-10-17 11:04:59,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:04:59,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:04:59,881 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:04:59,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:04:59,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:04:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:04:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1946681628, now seen corresponding path program 2 times [2022-10-17 11:04:59,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:04:59,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60182571] [2022-10-17 11:04:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:04:59,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:04:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:00,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:00,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60182571] [2022-10-17 11:05:00,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60182571] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:00,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:00,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:05:00,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925342082] [2022-10-17 11:05:00,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:00,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:05:00,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:00,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:05:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:00,232 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-10-17 11:05:00,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 224 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:00,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:05:00,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-10-17 11:05:00,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:05:00,981 INFO L130 PetriNetUnfolder]: 531/2673 cut-off events. [2022-10-17 11:05:00,981 INFO L131 PetriNetUnfolder]: For 1682/1692 co-relation queries the response was YES. [2022-10-17 11:05:00,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4658 conditions, 2673 events. 531/2673 cut-off events. For 1682/1692 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 21145 event pairs, 299 based on Foata normal form. 4/2484 useless extension candidates. Maximal degree in co-relation 3552. Up to 477 conditions per place. [2022-10-17 11:05:01,014 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 85 selfloop transitions, 15 changer transitions 0/276 dead transitions. [2022-10-17 11:05:01,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 276 transitions, 1018 flow [2022-10-17 11:05:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:05:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 11:05:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2022-10-17 11:05:01,019 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8610878661087866 [2022-10-17 11:05:01,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2022-10-17 11:05:01,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2022-10-17 11:05:01,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:05:01,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2022-10-17 11:05:01,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:01,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:01,029 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:01,029 INFO L175 Difference]: Start difference. First operand has 233 places, 224 transitions, 590 flow. Second operand 5 states and 1029 transitions. [2022-10-17 11:05:01,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 276 transitions, 1018 flow [2022-10-17 11:05:01,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 276 transitions, 999 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 11:05:01,044 INFO L231 Difference]: Finished difference. Result has 238 places, 231 transitions, 710 flow [2022-10-17 11:05:01,045 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=238, PETRI_TRANSITIONS=231} [2022-10-17 11:05:01,046 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 24 predicate places. [2022-10-17 11:05:01,046 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 231 transitions, 710 flow [2022-10-17 11:05:01,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:01,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:05:01,048 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:01,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:05:01,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:05:01,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash -768224580, now seen corresponding path program 3 times [2022-10-17 11:05:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:01,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706474728] [2022-10-17 11:05:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:01,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706474728] [2022-10-17 11:05:01,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706474728] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:01,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:01,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:05:01,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112580336] [2022-10-17 11:05:01,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:01,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:05:01,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:01,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:05:01,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:05:01,480 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-10-17 11:05:01,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 231 transitions, 710 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:01,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:05:01,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-10-17 11:05:01,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:05:02,190 INFO L130 PetriNetUnfolder]: 549/2783 cut-off events. [2022-10-17 11:05:02,190 INFO L131 PetriNetUnfolder]: For 2799/2808 co-relation queries the response was YES. [2022-10-17 11:05:02,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5091 conditions, 2783 events. 549/2783 cut-off events. For 2799/2808 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22264 event pairs, 303 based on Foata normal form. 12/2596 useless extension candidates. Maximal degree in co-relation 3689. Up to 485 conditions per place. [2022-10-17 11:05:02,223 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 91 selfloop transitions, 16 changer transitions 0/283 dead transitions. [2022-10-17 11:05:02,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 283 transitions, 1113 flow [2022-10-17 11:05:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:05:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 11:05:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1225 transitions. [2022-10-17 11:05:02,229 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8542538354253836 [2022-10-17 11:05:02,229 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1225 transitions. [2022-10-17 11:05:02,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1225 transitions. [2022-10-17 11:05:02,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:05:02,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1225 transitions. [2022-10-17 11:05:02,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.16666666666666) internal successors, (1225), 6 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:02,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:02,242 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:02,242 INFO L175 Difference]: Start difference. First operand has 238 places, 231 transitions, 710 flow. Second operand 6 states and 1225 transitions. [2022-10-17 11:05:02,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 283 transitions, 1113 flow [2022-10-17 11:05:02,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 283 transitions, 1086 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-10-17 11:05:02,266 INFO L231 Difference]: Finished difference. Result has 245 places, 233 transitions, 756 flow [2022-10-17 11:05:02,267 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=756, PETRI_PLACES=245, PETRI_TRANSITIONS=233} [2022-10-17 11:05:02,270 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 31 predicate places. [2022-10-17 11:05:02,271 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 233 transitions, 756 flow [2022-10-17 11:05:02,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:02,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:05:02,272 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:02,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:05:02,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:05:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 315615160, now seen corresponding path program 4 times [2022-10-17 11:05:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:02,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441132786] [2022-10-17 11:05:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:02,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:02,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441132786] [2022-10-17 11:05:02,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441132786] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:02,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:02,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:05:02,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829933263] [2022-10-17 11:05:02,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:02,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:05:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:02,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:05:02,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:02,697 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-10-17 11:05:02,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 233 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:02,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:05:02,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-10-17 11:05:02,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:05:03,358 INFO L130 PetriNetUnfolder]: 547/2773 cut-off events. [2022-10-17 11:05:03,359 INFO L131 PetriNetUnfolder]: For 3179/3182 co-relation queries the response was YES. [2022-10-17 11:05:03,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5168 conditions, 2773 events. 547/2773 cut-off events. For 3179/3182 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 22075 event pairs, 323 based on Foata normal form. 5/2571 useless extension candidates. Maximal degree in co-relation 4723. Up to 811 conditions per place. [2022-10-17 11:05:03,397 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 65 selfloop transitions, 19 changer transitions 0/260 dead transitions. [2022-10-17 11:05:03,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 260 transitions, 1075 flow [2022-10-17 11:05:03,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:05:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 11:05:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2022-10-17 11:05:03,402 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8460251046025105 [2022-10-17 11:05:03,402 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2022-10-17 11:05:03,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2022-10-17 11:05:03,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:05:03,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2022-10-17 11:05:03,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:03,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:03,411 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:03,411 INFO L175 Difference]: Start difference. First operand has 245 places, 233 transitions, 756 flow. Second operand 5 states and 1011 transitions. [2022-10-17 11:05:03,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 260 transitions, 1075 flow [2022-10-17 11:05:03,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 260 transitions, 1045 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-10-17 11:05:03,430 INFO L231 Difference]: Finished difference. Result has 250 places, 240 transitions, 882 flow [2022-10-17 11:05:03,431 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=882, PETRI_PLACES=250, PETRI_TRANSITIONS=240} [2022-10-17 11:05:03,432 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 36 predicate places. [2022-10-17 11:05:03,432 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 240 transitions, 882 flow [2022-10-17 11:05:03,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:03,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:05:03,433 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:03,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:05:03,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:05:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash -922629982, now seen corresponding path program 5 times [2022-10-17 11:05:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:03,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126398613] [2022-10-17 11:05:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:03,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:03,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:03,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126398613] [2022-10-17 11:05:03,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126398613] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:03,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:03,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:05:03,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019082687] [2022-10-17 11:05:03,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:03,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:05:03,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:05:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:05:03,838 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-10-17 11:05:03,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 240 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:03,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:05:03,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-10-17 11:05:03,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:05:04,452 INFO L130 PetriNetUnfolder]: 525/2656 cut-off events. [2022-10-17 11:05:04,452 INFO L131 PetriNetUnfolder]: For 3587/3588 co-relation queries the response was YES. [2022-10-17 11:05:04,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5002 conditions, 2656 events. 525/2656 cut-off events. For 3587/3588 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 20918 event pairs, 268 based on Foata normal form. 12/2476 useless extension candidates. Maximal degree in co-relation 4576. Up to 738 conditions per place. [2022-10-17 11:05:04,488 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 74 selfloop transitions, 20 changer transitions 0/270 dead transitions. [2022-10-17 11:05:04,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 270 transitions, 1171 flow [2022-10-17 11:05:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:05:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 11:05:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2022-10-17 11:05:04,494 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8444909344490934 [2022-10-17 11:05:04,494 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2022-10-17 11:05:04,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2022-10-17 11:05:04,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:05:04,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2022-10-17 11:05:04,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:04,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:04,505 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:04,506 INFO L175 Difference]: Start difference. First operand has 250 places, 240 transitions, 882 flow. Second operand 6 states and 1211 transitions. [2022-10-17 11:05:04,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 270 transitions, 1171 flow [2022-10-17 11:05:04,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 270 transitions, 1130 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-10-17 11:05:04,526 INFO L231 Difference]: Finished difference. Result has 257 places, 242 transitions, 930 flow [2022-10-17 11:05:04,526 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=930, PETRI_PLACES=257, PETRI_TRANSITIONS=242} [2022-10-17 11:05:04,529 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 43 predicate places. [2022-10-17 11:05:04,529 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 242 transitions, 930 flow [2022-10-17 11:05:04,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:04,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:05:04,531 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:04,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:05:04,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:05:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash 336008823, now seen corresponding path program 1 times [2022-10-17 11:05:04,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:04,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106141502] [2022-10-17 11:05:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:04,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:04,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:04,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106141502] [2022-10-17 11:05:04,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106141502] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:04,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203318614] [2022-10-17 11:05:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:04,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:04,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:04,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:05,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:05:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:05,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 11:05:05,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:05,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:05,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203318614] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:05,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:05,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-10-17 11:05:05,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662664670] [2022-10-17 11:05:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:05,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:05:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:05:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-10-17 11:05:05,534 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 239 [2022-10-17 11:05:05,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 242 transitions, 930 flow. Second operand has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:05,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:05:05,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 239 [2022-10-17 11:05:05,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:05:06,188 INFO L130 PetriNetUnfolder]: 369/1908 cut-off events. [2022-10-17 11:05:06,188 INFO L131 PetriNetUnfolder]: For 1416/1427 co-relation queries the response was YES. [2022-10-17 11:05:06,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 1908 events. 369/1908 cut-off events. For 1416/1427 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15105 event pairs, 207 based on Foata normal form. 1/1779 useless extension candidates. Maximal degree in co-relation 3008. Up to 531 conditions per place. [2022-10-17 11:05:06,210 INFO L137 encePairwiseOnDemand]: 219/239 looper letters, 47 selfloop transitions, 13 changer transitions 18/265 dead transitions. [2022-10-17 11:05:06,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 265 transitions, 1138 flow [2022-10-17 11:05:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 11:05:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 11:05:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1760 transitions. [2022-10-17 11:05:06,218 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7364016736401674 [2022-10-17 11:05:06,218 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1760 transitions. [2022-10-17 11:05:06,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1760 transitions. [2022-10-17 11:05:06,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:05:06,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1760 transitions. [2022-10-17 11:05:06,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:06,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:06,233 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:06,233 INFO L175 Difference]: Start difference. First operand has 257 places, 242 transitions, 930 flow. Second operand 10 states and 1760 transitions. [2022-10-17 11:05:06,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 265 transitions, 1138 flow [2022-10-17 11:05:06,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 265 transitions, 1093 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-10-17 11:05:06,249 INFO L231 Difference]: Finished difference. Result has 268 places, 243 transitions, 931 flow [2022-10-17 11:05:06,250 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=931, PETRI_PLACES=268, PETRI_TRANSITIONS=243} [2022-10-17 11:05:06,251 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 54 predicate places. [2022-10-17 11:05:06,251 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 243 transitions, 931 flow [2022-10-17 11:05:06,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:06,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:05:06,253 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:06,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:05:06,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-17 11:05:06,477 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:05:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 416673764, now seen corresponding path program 1 times [2022-10-17 11:05:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:06,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981616258] [2022-10-17 11:05:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:06,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:07,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981616258] [2022-10-17 11:05:07,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981616258] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:07,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294669226] [2022-10-17 11:05:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:07,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:07,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:07,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:07,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb73f2aa-a09c-4a65-8896-e4ddac31469c/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:05:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-17 11:05:07,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:07,992 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-10-17 11:05:07,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-10-17 11:05:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:08,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:05:08,747 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-10-17 11:05:08,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 11:05:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:09,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294669226] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:05:09,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:05:09,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 18] total 35 [2022-10-17 11:05:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311832212] [2022-10-17 11:05:09,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:05:09,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-17 11:05:09,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:09,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-17 11:05:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2022-10-17 11:05:09,751 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 239 [2022-10-17 11:05:09,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 243 transitions, 931 flow. Second operand has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:09,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:05:09,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 239 [2022-10-17 11:05:09,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand