./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:10:25,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:25,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:25,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:25,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:25,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:25,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:25,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:25,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:25,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:25,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:25,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:25,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:25,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:25,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:25,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:25,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:25,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:25,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:25,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:25,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:25,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:25,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:25,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:25,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:25,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:25,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:25,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:25,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:25,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:25,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:25,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:25,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:25,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:25,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:25,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:25,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:25,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:25,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:25,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:25,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:25,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:10:25,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:25,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:25,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:25,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:25,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:25,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:25,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:25,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:25,628 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:25,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:25,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:10:25,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:25,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:10:25,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:25,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:25,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:25,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:25,630 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:10:25,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:25,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:25,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:25,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:25,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:25,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:25,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:25,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:25,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:25,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:25,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:10:25,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:10:25,632 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:25,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:25,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:25,633 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_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 [2022-11-20 12:10:25,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:25,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:25,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:25,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:25,979 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:25,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-20 12:10:29,069 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:29,277 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:29,278 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-20 12:10:29,285 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/data/2b18db3e2/836c425284bc45f8b1048ffba089bbfe/FLAG5db5541cc [2022-11-20 12:10:29,304 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/data/2b18db3e2/836c425284bc45f8b1048ffba089bbfe [2022-11-20 12:10:29,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:29,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:29,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:29,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:29,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:29,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddf7aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29, skipping insertion in model container [2022-11-20 12:10:29,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:29,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:29,567 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-20 12:10:29,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:29,594 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:10:29,616 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-20 12:10:29,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:29,638 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:10:29,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29 WrapperNode [2022-11-20 12:10:29,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:29,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:29,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:10:29,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:10:29,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,686 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 200 [2022-11-20 12:10:29,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:29,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:10:29,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:10:29,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:10:29,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:10:29,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:10:29,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:10:29,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:10:29,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (1/1) ... [2022-11-20 12:10:29,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:29,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:29,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:10:29,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:10:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:10:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:10:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:10:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:10:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:10:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:10:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:10:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:10:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:10:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:10:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:10:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:10:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:10:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:10:29,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:10:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:10:29,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:10:29,837 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:10:29,975 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:10:29,978 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:10:30,422 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:10:30,698 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:10:30,698 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 12:10:30,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:30 BoogieIcfgContainer [2022-11-20 12:10:30,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:10:30,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:10:30,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:10:30,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:10:30,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:29" (1/3) ... [2022-11-20 12:10:30,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6769e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:30, skipping insertion in model container [2022-11-20 12:10:30,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:29" (2/3) ... [2022-11-20 12:10:30,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6769e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:30, skipping insertion in model container [2022-11-20 12:10:30,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:30" (3/3) ... [2022-11-20 12:10:30,719 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2022-11-20 12:10:30,730 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:10:30,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:10:30,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:10:30,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:10:30,870 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:10:30,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 336 flow [2022-11-20 12:10:31,005 INFO L130 PetriNetUnfolder]: 12/153 cut-off events. [2022-11-20 12:10:31,006 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:10:31,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 12/153 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 95 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-11-20 12:10:31,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 156 transitions, 336 flow [2022-11-20 12:10:31,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 142 transitions, 302 flow [2022-11-20 12:10:31,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:10:31,071 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;@7cd61664, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:10:31,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 12:10:31,148 INFO L130 PetriNetUnfolder]: 12/141 cut-off events. [2022-11-20 12:10:31,156 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:10:31,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:31,158 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:31,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1594891268, now seen corresponding path program 1 times [2022-11-20 12:10:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:31,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577079893] [2022-11-20 12:10:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:31,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:31,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577079893] [2022-11-20 12:10:31,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577079893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:31,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:31,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:10:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502499483] [2022-11-20 12:10:31,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:31,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:10:31,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:31,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:10:31,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:10:31,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 156 [2022-11-20 12:10:31,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 142 transitions, 302 flow. Second operand has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:31,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:31,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 156 [2022-11-20 12:10:31,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:31,629 INFO L130 PetriNetUnfolder]: 41/279 cut-off events. [2022-11-20 12:10:31,630 INFO L131 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2022-11-20 12:10:31,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 279 events. 41/279 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 811 event pairs, 15 based on Foata normal form. 39/288 useless extension candidates. Maximal degree in co-relation 229. Up to 59 conditions per place. [2022-11-20 12:10:31,634 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 9 selfloop transitions, 0 changer transitions 4/134 dead transitions. [2022-11-20 12:10:31,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 304 flow [2022-11-20 12:10:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:10:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 12:10:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 293 transitions. [2022-11-20 12:10:31,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9391025641025641 [2022-11-20 12:10:31,650 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 293 transitions. [2022-11-20 12:10:31,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 293 transitions. [2022-11-20 12:10:31,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:31,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 293 transitions. [2022-11-20 12:10:31,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:31,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:31,664 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:31,666 INFO L175 Difference]: Start difference. First operand has 140 places, 142 transitions, 302 flow. Second operand 2 states and 293 transitions. [2022-11-20 12:10:31,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 304 flow [2022-11-20 12:10:31,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 134 transitions, 292 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:10:31,675 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 266 flow [2022-11-20 12:10:31,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=266, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2022-11-20 12:10:31,684 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, -5 predicate places. [2022-11-20 12:10:31,684 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 266 flow [2022-11-20 12:10:31,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:31,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:31,685 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:31,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:10:31,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:31,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1674272564, now seen corresponding path program 1 times [2022-11-20 12:10:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:31,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701321768] [2022-11-20 12:10:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:31,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:32,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701321768] [2022-11-20 12:10:32,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701321768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:32,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:32,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:10:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839357556] [2022-11-20 12:10:32,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:32,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:10:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:32,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:10:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:10:32,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 156 [2022-11-20 12:10:32,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:32,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:32,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 156 [2022-11-20 12:10:32,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:32,627 INFO L130 PetriNetUnfolder]: 175/636 cut-off events. [2022-11-20 12:10:32,628 INFO L131 PetriNetUnfolder]: For 39/40 co-relation queries the response was YES. [2022-11-20 12:10:32,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 636 events. 175/636 cut-off events. For 39/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3269 event pairs, 63 based on Foata normal form. 1/589 useless extension candidates. Maximal degree in co-relation 938. Up to 132 conditions per place. [2022-11-20 12:10:32,638 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 48 selfloop transitions, 6 changer transitions 4/158 dead transitions. [2022-11-20 12:10:32,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 158 transitions, 447 flow [2022-11-20 12:10:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:10:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:10:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 737 transitions. [2022-11-20 12:10:32,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7873931623931624 [2022-11-20 12:10:32,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 737 transitions. [2022-11-20 12:10:32,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 737 transitions. [2022-11-20 12:10:32,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:32,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 737 transitions. [2022-11-20 12:10:32,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:32,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:32,664 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:32,665 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 266 flow. Second operand 6 states and 737 transitions. [2022-11-20 12:10:32,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 158 transitions, 447 flow [2022-11-20 12:10:32,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 158 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:10:32,673 INFO L231 Difference]: Finished difference. Result has 139 places, 134 transitions, 302 flow [2022-11-20 12:10:32,674 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2022-11-20 12:10:32,675 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, -1 predicate places. [2022-11-20 12:10:32,676 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 302 flow [2022-11-20 12:10:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:32,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:32,678 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:32,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:10:32,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:32,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:32,679 INFO L85 PathProgramCache]: Analyzing trace with hash -165018942, now seen corresponding path program 1 times [2022-11-20 12:10:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:32,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348780879] [2022-11-20 12:10:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:32,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:33,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:33,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348780879] [2022-11-20 12:10:33,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348780879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:33,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:33,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:10:33,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167646353] [2022-11-20 12:10:33,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:33,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:10:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:10:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:10:33,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 156 [2022-11-20 12:10:33,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:33,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:33,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 156 [2022-11-20 12:10:33,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:33,498 INFO L130 PetriNetUnfolder]: 603/1708 cut-off events. [2022-11-20 12:10:33,499 INFO L131 PetriNetUnfolder]: For 77/83 co-relation queries the response was YES. [2022-11-20 12:10:33,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2863 conditions, 1708 events. 603/1708 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11694 event pairs, 312 based on Foata normal form. 0/1472 useless extension candidates. Maximal degree in co-relation 2856. Up to 606 conditions per place. [2022-11-20 12:10:33,516 INFO L137 encePairwiseOnDemand]: 147/156 looper letters, 47 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2022-11-20 12:10:33,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 158 transitions, 468 flow [2022-11-20 12:10:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:10:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:10:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 984 transitions. [2022-11-20 12:10:33,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7884615384615384 [2022-11-20 12:10:33,520 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 984 transitions. [2022-11-20 12:10:33,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 984 transitions. [2022-11-20 12:10:33,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:33,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 984 transitions. [2022-11-20 12:10:33,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:33,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:33,528 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:33,528 INFO L175 Difference]: Start difference. First operand has 139 places, 134 transitions, 302 flow. Second operand 8 states and 984 transitions. [2022-11-20 12:10:33,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 158 transitions, 468 flow [2022-11-20 12:10:33,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 158 transitions, 464 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 12:10:33,538 INFO L231 Difference]: Finished difference. Result has 145 places, 137 transitions, 334 flow [2022-11-20 12:10:33,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-11-20 12:10:33,545 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 5 predicate places. [2022-11-20 12:10:33,545 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 334 flow [2022-11-20 12:10:33,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:33,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:33,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:33,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:10:33,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:33,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1499400858, now seen corresponding path program 1 times [2022-11-20 12:10:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:33,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71289349] [2022-11-20 12:10:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:33,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:34,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:34,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71289349] [2022-11-20 12:10:34,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71289349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:34,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:34,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:10:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408751567] [2022-11-20 12:10:34,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:34,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:10:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:10:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:10:34,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 156 [2022-11-20 12:10:34,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 334 flow. Second operand has 10 states, 10 states have (on average 98.1) internal successors, (981), 10 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:34,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:34,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 156 [2022-11-20 12:10:34,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:35,045 INFO L130 PetriNetUnfolder]: 1151/2547 cut-off events. [2022-11-20 12:10:35,045 INFO L131 PetriNetUnfolder]: For 295/322 co-relation queries the response was YES. [2022-11-20 12:10:35,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4729 conditions, 2547 events. 1151/2547 cut-off events. For 295/322 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18586 event pairs, 890 based on Foata normal form. 27/2259 useless extension candidates. Maximal degree in co-relation 4720. Up to 1488 conditions per place. [2022-11-20 12:10:35,067 INFO L137 encePairwiseOnDemand]: 144/156 looper letters, 71 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2022-11-20 12:10:35,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 168 transitions, 570 flow [2022-11-20 12:10:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:10:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:10:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1117 transitions. [2022-11-20 12:10:35,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6509324009324009 [2022-11-20 12:10:35,071 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1117 transitions. [2022-11-20 12:10:35,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1117 transitions. [2022-11-20 12:10:35,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:35,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1117 transitions. [2022-11-20 12:10:35,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 101.54545454545455) internal successors, (1117), 11 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:35,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:35,080 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:35,080 INFO L175 Difference]: Start difference. First operand has 145 places, 137 transitions, 334 flow. Second operand 11 states and 1117 transitions. [2022-11-20 12:10:35,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 168 transitions, 570 flow [2022-11-20 12:10:35,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 168 transitions, 560 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:10:35,085 INFO L231 Difference]: Finished difference. Result has 156 places, 141 transitions, 373 flow [2022-11-20 12:10:35,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=373, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2022-11-20 12:10:35,087 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 16 predicate places. [2022-11-20 12:10:35,087 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 373 flow [2022-11-20 12:10:35,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.1) internal successors, (981), 10 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:35,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:35,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:35,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:10:35,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:35,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash -198156446, now seen corresponding path program 1 times [2022-11-20 12:10:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:35,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554098071] [2022-11-20 12:10:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:35,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:35,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554098071] [2022-11-20 12:10:35,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554098071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:35,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:35,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:10:35,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703153091] [2022-11-20 12:10:35,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:35,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:10:35,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:35,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:10:35,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:10:35,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 156 [2022-11-20 12:10:35,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 141 transitions, 373 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:35,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:35,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 156 [2022-11-20 12:10:35,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:36,688 INFO L130 PetriNetUnfolder]: 957/2002 cut-off events. [2022-11-20 12:10:36,688 INFO L131 PetriNetUnfolder]: For 426/444 co-relation queries the response was YES. [2022-11-20 12:10:36,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3964 conditions, 2002 events. 957/2002 cut-off events. For 426/444 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13055 event pairs, 551 based on Foata normal form. 18/1826 useless extension candidates. Maximal degree in co-relation 3950. Up to 1109 conditions per place. [2022-11-20 12:10:36,707 INFO L137 encePairwiseOnDemand]: 143/156 looper letters, 53 selfloop transitions, 7 changer transitions 21/167 dead transitions. [2022-11-20 12:10:36,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 167 transitions, 597 flow [2022-11-20 12:10:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:10:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 12:10:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1220 transitions. [2022-11-20 12:10:36,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6517094017094017 [2022-11-20 12:10:36,711 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1220 transitions. [2022-11-20 12:10:36,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1220 transitions. [2022-11-20 12:10:36,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:36,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1220 transitions. [2022-11-20 12:10:36,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:36,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:36,720 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:36,720 INFO L175 Difference]: Start difference. First operand has 156 places, 141 transitions, 373 flow. Second operand 12 states and 1220 transitions. [2022-11-20 12:10:36,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 167 transitions, 597 flow [2022-11-20 12:10:36,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 167 transitions, 584 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:10:36,728 INFO L231 Difference]: Finished difference. Result has 164 places, 135 transitions, 340 flow [2022-11-20 12:10:36,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=340, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-11-20 12:10:36,731 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 24 predicate places. [2022-11-20 12:10:36,731 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 340 flow [2022-11-20 12:10:36,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:36,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:36,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:36,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:10:36,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash -930898012, now seen corresponding path program 1 times [2022-11-20 12:10:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:36,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993586216] [2022-11-20 12:10:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:36,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:37,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:37,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993586216] [2022-11-20 12:10:37,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993586216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:37,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640083991] [2022-11-20 12:10:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:37,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:37,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:37,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:37,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:10:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:37,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:10:37,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:37,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:37,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:37,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640083991] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:37,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:37,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-20 12:10:37,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042507305] [2022-11-20 12:10:37,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:37,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:10:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:10:37,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:10:37,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 156 [2022-11-20 12:10:37,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 340 flow. Second operand has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 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) [2022-11-20 12:10:37,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:37,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 156 [2022-11-20 12:10:37,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:38,770 INFO L130 PetriNetUnfolder]: 1766/3399 cut-off events. [2022-11-20 12:10:38,770 INFO L131 PetriNetUnfolder]: For 946/946 co-relation queries the response was YES. [2022-11-20 12:10:38,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 3399 events. 1766/3399 cut-off events. For 946/946 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 24956 event pairs, 441 based on Foata normal form. 11/3327 useless extension candidates. Maximal degree in co-relation 7380. Up to 793 conditions per place. [2022-11-20 12:10:38,806 INFO L137 encePairwiseOnDemand]: 145/156 looper letters, 78 selfloop transitions, 17 changer transitions 0/191 dead transitions. [2022-11-20 12:10:38,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 191 transitions, 685 flow [2022-11-20 12:10:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:10:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:10:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1294 transitions. [2022-11-20 12:10:38,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.754079254079254 [2022-11-20 12:10:38,810 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1294 transitions. [2022-11-20 12:10:38,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1294 transitions. [2022-11-20 12:10:38,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:38,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1294 transitions. [2022-11-20 12:10:38,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 117.63636363636364) internal successors, (1294), 11 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:38,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:38,819 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:38,819 INFO L175 Difference]: Start difference. First operand has 164 places, 135 transitions, 340 flow. Second operand 11 states and 1294 transitions. [2022-11-20 12:10:38,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 191 transitions, 685 flow [2022-11-20 12:10:38,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 191 transitions, 624 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-11-20 12:10:38,833 INFO L231 Difference]: Finished difference. Result has 153 places, 147 transitions, 403 flow [2022-11-20 12:10:38,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=403, PETRI_PLACES=153, PETRI_TRANSITIONS=147} [2022-11-20 12:10:38,834 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 13 predicate places. [2022-11-20 12:10:38,835 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 147 transitions, 403 flow [2022-11-20 12:10:38,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 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) [2022-11-20 12:10:38,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:38,836 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:38,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:10:39,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:39,042 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:39,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1214024902, now seen corresponding path program 2 times [2022-11-20 12:10:39,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:39,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028476242] [2022-11-20 12:10:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:39,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:39,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:39,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028476242] [2022-11-20 12:10:39,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028476242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:39,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401322932] [2022-11-20 12:10:39,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:10:39,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:39,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:39,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:39,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:10:39,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:10:39,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:39,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:10:39,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:39,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:39,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401322932] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:39,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:39,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-20 12:10:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156845116] [2022-11-20 12:10:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:39,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:10:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:10:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:10:39,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 156 [2022-11-20 12:10:39,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 147 transitions, 403 flow. Second operand has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 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) [2022-11-20 12:10:39,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:39,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 156 [2022-11-20 12:10:39,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:40,910 INFO L130 PetriNetUnfolder]: 1970/4147 cut-off events. [2022-11-20 12:10:40,910 INFO L131 PetriNetUnfolder]: For 1743/1763 co-relation queries the response was YES. [2022-11-20 12:10:40,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 4147 events. 1970/4147 cut-off events. For 1743/1763 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 32346 event pairs, 357 based on Foata normal form. 9/3851 useless extension candidates. Maximal degree in co-relation 9460. Up to 834 conditions per place. [2022-11-20 12:10:40,949 INFO L137 encePairwiseOnDemand]: 144/156 looper letters, 77 selfloop transitions, 30 changer transitions 0/203 dead transitions. [2022-11-20 12:10:40,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 203 transitions, 813 flow [2022-11-20 12:10:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:10:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:10:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1286 transitions. [2022-11-20 12:10:41,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7494172494172494 [2022-11-20 12:10:41,045 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1286 transitions. [2022-11-20 12:10:41,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1286 transitions. [2022-11-20 12:10:41,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:41,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1286 transitions. [2022-11-20 12:10:41,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.9090909090909) internal successors, (1286), 11 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:41,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:41,053 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:41,054 INFO L175 Difference]: Start difference. First operand has 153 places, 147 transitions, 403 flow. Second operand 11 states and 1286 transitions. [2022-11-20 12:10:41,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 203 transitions, 813 flow [2022-11-20 12:10:41,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 203 transitions, 808 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:10:41,076 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 614 flow [2022-11-20 12:10:41,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=614, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2022-11-20 12:10:41,077 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 26 predicate places. [2022-11-20 12:10:41,077 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 614 flow [2022-11-20 12:10:41,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 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) [2022-11-20 12:10:41,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:41,078 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:41,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 12:10:41,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:10:41,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:41,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:41,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1636670544, now seen corresponding path program 3 times [2022-11-20 12:10:41,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:41,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275027348] [2022-11-20 12:10:41,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:41,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:41,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:41,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275027348] [2022-11-20 12:10:41,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275027348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:41,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170718475] [2022-11-20 12:10:41,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:10:41,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:41,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:41,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:41,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:10:41,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 12:10:41,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:41,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:10:41,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:41,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:42,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170718475] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:42,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:42,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-11-20 12:10:42,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715093584] [2022-11-20 12:10:42,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:42,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:10:42,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:10:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:10:42,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 156 [2022-11-20 12:10:42,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 614 flow. Second operand has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 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) [2022-11-20 12:10:42,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:42,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 156 [2022-11-20 12:10:42,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:43,725 INFO L130 PetriNetUnfolder]: 2477/5212 cut-off events. [2022-11-20 12:10:43,726 INFO L131 PetriNetUnfolder]: For 8046/8182 co-relation queries the response was YES. [2022-11-20 12:10:43,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14957 conditions, 5212 events. 2477/5212 cut-off events. For 8046/8182 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 42714 event pairs, 493 based on Foata normal form. 81/4911 useless extension candidates. Maximal degree in co-relation 14939. Up to 973 conditions per place. [2022-11-20 12:10:43,785 INFO L137 encePairwiseOnDemand]: 143/156 looper letters, 93 selfloop transitions, 47 changer transitions 0/236 dead transitions. [2022-11-20 12:10:43,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 236 transitions, 1234 flow [2022-11-20 12:10:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:10:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:10:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1305 transitions. [2022-11-20 12:10:43,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7604895104895105 [2022-11-20 12:10:43,790 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1305 transitions. [2022-11-20 12:10:43,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1305 transitions. [2022-11-20 12:10:43,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:43,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1305 transitions. [2022-11-20 12:10:43,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.63636363636364) internal successors, (1305), 11 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:43,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:43,799 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:43,800 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 614 flow. Second operand 11 states and 1305 transitions. [2022-11-20 12:10:43,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 236 transitions, 1234 flow [2022-11-20 12:10:43,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 236 transitions, 1205 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-20 12:10:43,917 INFO L231 Difference]: Finished difference. Result has 177 places, 185 transitions, 942 flow [2022-11-20 12:10:43,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=942, PETRI_PLACES=177, PETRI_TRANSITIONS=185} [2022-11-20 12:10:43,920 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 37 predicate places. [2022-11-20 12:10:43,921 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 185 transitions, 942 flow [2022-11-20 12:10:43,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 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) [2022-11-20 12:10:43,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:43,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:43,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:44,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 12:10:44,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash -361978990, now seen corresponding path program 4 times [2022-11-20 12:10:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:44,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921483987] [2022-11-20 12:10:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:44,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:44,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921483987] [2022-11-20 12:10:44,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921483987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:44,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201195672] [2022-11-20 12:10:44,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:10:44,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:44,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:44,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:44,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:10:44,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:10:44,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:44,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:10:44,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:44,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:45,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201195672] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:45,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:45,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-11-20 12:10:45,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491684924] [2022-11-20 12:10:45,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:45,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:10:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:10:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:10:45,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 156 [2022-11-20 12:10:45,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 185 transitions, 942 flow. Second operand has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 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) [2022-11-20 12:10:45,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:45,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 156 [2022-11-20 12:10:45,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:46,283 INFO L130 PetriNetUnfolder]: 2574/5377 cut-off events. [2022-11-20 12:10:46,283 INFO L131 PetriNetUnfolder]: For 14942/15182 co-relation queries the response was YES. [2022-11-20 12:10:46,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17777 conditions, 5377 events. 2574/5377 cut-off events. For 14942/15182 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 44108 event pairs, 387 based on Foata normal form. 29/5029 useless extension candidates. Maximal degree in co-relation 17754. Up to 1438 conditions per place. [2022-11-20 12:10:46,355 INFO L137 encePairwiseOnDemand]: 143/156 looper letters, 83 selfloop transitions, 47 changer transitions 0/226 dead transitions. [2022-11-20 12:10:46,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 226 transitions, 1398 flow [2022-11-20 12:10:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:10:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:10:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1179 transitions. [2022-11-20 12:10:46,358 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7557692307692307 [2022-11-20 12:10:46,358 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1179 transitions. [2022-11-20 12:10:46,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1179 transitions. [2022-11-20 12:10:46,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:46,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1179 transitions. [2022-11-20 12:10:46,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.9) internal successors, (1179), 10 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:46,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:46,449 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:46,449 INFO L175 Difference]: Start difference. First operand has 177 places, 185 transitions, 942 flow. Second operand 10 states and 1179 transitions. [2022-11-20 12:10:46,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 226 transitions, 1398 flow [2022-11-20 12:10:46,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 226 transitions, 1347 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-20 12:10:46,636 INFO L231 Difference]: Finished difference. Result has 183 places, 192 transitions, 1135 flow [2022-11-20 12:10:46,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1135, PETRI_PLACES=183, PETRI_TRANSITIONS=192} [2022-11-20 12:10:46,637 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 43 predicate places. [2022-11-20 12:10:46,637 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 192 transitions, 1135 flow [2022-11-20 12:10:46,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 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) [2022-11-20 12:10:46,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:46,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:46,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:46,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:46,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash -669176570, now seen corresponding path program 5 times [2022-11-20 12:10:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:46,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054196022] [2022-11-20 12:10:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:46,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:47,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:47,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054196022] [2022-11-20 12:10:47,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054196022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:47,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490978727] [2022-11-20 12:10:47,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:10:47,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:47,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:47,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:47,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:10:47,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:10:47,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:47,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:10:47,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:47,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:47,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490978727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:47,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:47,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2022-11-20 12:10:47,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359731454] [2022-11-20 12:10:47,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:47,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:10:47,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:10:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:10:47,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 156 [2022-11-20 12:10:47,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 192 transitions, 1135 flow. Second operand has 17 states, 17 states have (on average 109.47058823529412) internal successors, (1861), 17 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:47,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:47,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 156 [2022-11-20 12:10:47,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:50,549 INFO L130 PetriNetUnfolder]: 5084/9950 cut-off events. [2022-11-20 12:10:50,549 INFO L131 PetriNetUnfolder]: For 35415/35761 co-relation queries the response was YES. [2022-11-20 12:10:50,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34195 conditions, 9950 events. 5084/9950 cut-off events. For 35415/35761 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 83903 event pairs, 531 based on Foata normal form. 45/9485 useless extension candidates. Maximal degree in co-relation 34169. Up to 1065 conditions per place. [2022-11-20 12:10:50,684 INFO L137 encePairwiseOnDemand]: 140/156 looper letters, 237 selfloop transitions, 142 changer transitions 0/472 dead transitions. [2022-11-20 12:10:50,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 472 transitions, 3741 flow [2022-11-20 12:10:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 12:10:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 12:10:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2829 transitions. [2022-11-20 12:10:50,695 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7556089743589743 [2022-11-20 12:10:50,696 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2829 transitions. [2022-11-20 12:10:50,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2829 transitions. [2022-11-20 12:10:50,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:50,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2829 transitions. [2022-11-20 12:10:50,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 117.875) internal successors, (2829), 24 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:50,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 156.0) internal successors, (3900), 25 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:50,718 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 156.0) internal successors, (3900), 25 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:50,718 INFO L175 Difference]: Start difference. First operand has 183 places, 192 transitions, 1135 flow. Second operand 24 states and 2829 transitions. [2022-11-20 12:10:50,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 472 transitions, 3741 flow [2022-11-20 12:10:51,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 472 transitions, 3578 flow, removed 30 selfloop flow, removed 6 redundant places. [2022-11-20 12:10:51,039 INFO L231 Difference]: Finished difference. Result has 218 places, 294 transitions, 2746 flow [2022-11-20 12:10:51,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2746, PETRI_PLACES=218, PETRI_TRANSITIONS=294} [2022-11-20 12:10:51,041 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 78 predicate places. [2022-11-20 12:10:51,041 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 294 transitions, 2746 flow [2022-11-20 12:10:51,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 109.47058823529412) internal successors, (1861), 17 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:51,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:51,043 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:51,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:51,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:51,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1702374620, now seen corresponding path program 6 times [2022-11-20 12:10:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:51,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143672283] [2022-11-20 12:10:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:51,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:51,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:51,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143672283] [2022-11-20 12:10:51,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143672283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:51,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041439055] [2022-11-20 12:10:51,576 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:10:51,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:51,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:51,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:51,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:10:51,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-20 12:10:51,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:10:51,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:10:51,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:51,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:51,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041439055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:10:51,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:10:51,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2022-11-20 12:10:51,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178967281] [2022-11-20 12:10:51,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:10:51,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:10:51,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:10:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:10:52,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 156 [2022-11-20 12:10:52,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 294 transitions, 2746 flow. Second operand has 17 states, 17 states have (on average 109.6470588235294) internal successors, (1864), 17 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:52,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:52,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 156 [2022-11-20 12:10:52,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:10:56,629 INFO L130 PetriNetUnfolder]: 7590/14548 cut-off events. [2022-11-20 12:10:56,629 INFO L131 PetriNetUnfolder]: For 97611/97961 co-relation queries the response was YES. [2022-11-20 12:10:56,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59583 conditions, 14548 events. 7590/14548 cut-off events. For 97611/97961 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 127148 event pairs, 632 based on Foata normal form. 26/14378 useless extension candidates. Maximal degree in co-relation 59540. Up to 1429 conditions per place. [2022-11-20 12:10:56,822 INFO L137 encePairwiseOnDemand]: 140/156 looper letters, 297 selfloop transitions, 268 changer transitions 0/658 dead transitions. [2022-11-20 12:10:56,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 658 transitions, 6481 flow [2022-11-20 12:10:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 12:10:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 12:10:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3998 transitions. [2022-11-20 12:10:56,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7537707390648567 [2022-11-20 12:10:56,831 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3998 transitions. [2022-11-20 12:10:56,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3998 transitions. [2022-11-20 12:10:56,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:10:56,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3998 transitions. [2022-11-20 12:10:56,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 117.58823529411765) internal successors, (3998), 34 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:56,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 156.0) internal successors, (5460), 35 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:56,854 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 156.0) internal successors, (5460), 35 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:56,854 INFO L175 Difference]: Start difference. First operand has 218 places, 294 transitions, 2746 flow. Second operand 34 states and 3998 transitions. [2022-11-20 12:10:56,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 658 transitions, 6481 flow [2022-11-20 12:10:57,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 658 transitions, 6358 flow, removed 57 selfloop flow, removed 5 redundant places. [2022-11-20 12:10:57,824 INFO L231 Difference]: Finished difference. Result has 256 places, 419 transitions, 4807 flow [2022-11-20 12:10:57,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4807, PETRI_PLACES=256, PETRI_TRANSITIONS=419} [2022-11-20 12:10:57,825 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 116 predicate places. [2022-11-20 12:10:57,826 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 419 transitions, 4807 flow [2022-11-20 12:10:57,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 109.6470588235294) internal successors, (1864), 17 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:57,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:10:57,827 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:57,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:10:58,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:10:58,036 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:10:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2023539902, now seen corresponding path program 1 times [2022-11-20 12:10:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:58,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141119070] [2022-11-20 12:10:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:58,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:58,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141119070] [2022-11-20 12:10:58,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141119070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:58,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153013918] [2022-11-20 12:10:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:58,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:10:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:58,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:10:58,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:10:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:58,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:10:58,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:10:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:58,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:10:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:10:58,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153013918] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:10:58,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:10:58,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-20 12:10:58,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433380249] [2022-11-20 12:10:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:10:58,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:10:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:10:58,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 156 [2022-11-20 12:10:58,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 419 transitions, 4807 flow. Second operand has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:10:58,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:10:58,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 156 [2022-11-20 12:10:58,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:00,375 INFO L130 PetriNetUnfolder]: 2738/6682 cut-off events. [2022-11-20 12:11:00,375 INFO L131 PetriNetUnfolder]: For 56015/56886 co-relation queries the response was YES. [2022-11-20 12:11:00,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27229 conditions, 6682 events. 2738/6682 cut-off events. For 56015/56886 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 60972 event pairs, 724 based on Foata normal form. 376/6707 useless extension candidates. Maximal degree in co-relation 27176. Up to 2000 conditions per place. [2022-11-20 12:11:00,603 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 147 selfloop transitions, 60 changer transitions 0/469 dead transitions. [2022-11-20 12:11:00,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 469 transitions, 5974 flow [2022-11-20 12:11:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:11:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:11:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 852 transitions. [2022-11-20 12:11:00,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2022-11-20 12:11:00,606 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 852 transitions. [2022-11-20 12:11:00,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 852 transitions. [2022-11-20 12:11:00,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:11:00,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 852 transitions. [2022-11-20 12:11:00,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:00,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:00,611 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:00,612 INFO L175 Difference]: Start difference. First operand has 256 places, 419 transitions, 4807 flow. Second operand 7 states and 852 transitions. [2022-11-20 12:11:00,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 469 transitions, 5974 flow [2022-11-20 12:11:00,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 469 transitions, 5703 flow, removed 33 selfloop flow, removed 11 redundant places. [2022-11-20 12:11:00,999 INFO L231 Difference]: Finished difference. Result has 252 places, 419 transitions, 4729 flow [2022-11-20 12:11:01,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4729, PETRI_PLACES=252, PETRI_TRANSITIONS=419} [2022-11-20 12:11:01,001 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 112 predicate places. [2022-11-20 12:11:01,001 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 419 transitions, 4729 flow [2022-11-20 12:11:01,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:01,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:11:01,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:01,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:11:01,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:11:01,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:11:01,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1656776988, now seen corresponding path program 1 times [2022-11-20 12:11:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:01,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589560263] [2022-11-20 12:11:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:01,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:03,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:03,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589560263] [2022-11-20 12:11:03,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589560263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:11:03,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214709127] [2022-11-20 12:11:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:03,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:11:03,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:03,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:11:03,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:11:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:03,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-20 12:11:03,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:11:03,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:11:04,043 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:11:04,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-20 12:11:05,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:11:05,595 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:11:05,596 INFO L350 Elim1Store]: Elim1 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 17 [2022-11-20 12:11:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:06,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:11:08,543 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (~M~0 Int)) (or (= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_328) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~res2~0) c_~res1~0) (not (< ~M~0 c_~N~0)) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-11-20 12:11:10,683 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (~M~0 Int)) (or (= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_328) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~res2~0) |c_thread1Thread1of1ForFork0_~tmp~0#1|) (not (< ~M~0 c_~N~0)) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-11-20 12:11:10,710 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:11:10,711 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 42 [2022-11-20 12:11:10,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 12:11:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:11:12,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214709127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:11:12,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:11:12,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 75 [2022-11-20 12:11:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159422413] [2022-11-20 12:11:12,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:11:12,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-11-20 12:11:12,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:12,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-11-20 12:11:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=4709, Unknown=2, NotChecked=286, Total=5550 [2022-11-20 12:11:12,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 156 [2022-11-20 12:11:12,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 419 transitions, 4729 flow. Second operand has 75 states, 75 states have (on average 56.64) internal successors, (4248), 75 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:11:12,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:11:12,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 156 [2022-11-20 12:11:12,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:11:58,629 INFO L130 PetriNetUnfolder]: 63701/103193 cut-off events. [2022-11-20 12:11:58,630 INFO L131 PetriNetUnfolder]: For 580368/580368 co-relation queries the response was YES. [2022-11-20 12:11:59,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394039 conditions, 103193 events. 63701/103193 cut-off events. For 580368/580368 co-relation queries the response was YES. Maximal size of possible extension queue 4455. Compared 969105 event pairs, 7139 based on Foata normal form. 4/102981 useless extension candidates. Maximal degree in co-relation 393990. Up to 32088 conditions per place. [2022-11-20 12:12:00,088 INFO L137 encePairwiseOnDemand]: 112/156 looper letters, 2267 selfloop transitions, 1029 changer transitions 15/3356 dead transitions. [2022-11-20 12:12:00,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 3356 transitions, 42944 flow [2022-11-20 12:12:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-11-20 12:12:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2022-11-20 12:12:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 9088 transitions. [2022-11-20 12:12:00,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4131660301873068 [2022-11-20 12:12:00,457 INFO L72 ComplementDD]: Start complementDD. Operand 141 states and 9088 transitions. [2022-11-20 12:12:00,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 9088 transitions. [2022-11-20 12:12:00,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:12:00,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 141 states and 9088 transitions. [2022-11-20 12:12:00,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 142 states, 141 states have (on average 64.45390070921985) internal successors, (9088), 141 states have internal predecessors, (9088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:00,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 142 states, 142 states have (on average 156.0) internal successors, (22152), 142 states have internal predecessors, (22152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:00,560 INFO L81 ComplementDD]: Finished complementDD. Result has 142 states, 142 states have (on average 156.0) internal successors, (22152), 142 states have internal predecessors, (22152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:00,561 INFO L175 Difference]: Start difference. First operand has 252 places, 419 transitions, 4729 flow. Second operand 141 states and 9088 transitions. [2022-11-20 12:12:00,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 3356 transitions, 42944 flow [2022-11-20 12:12:22,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 3356 transitions, 42520 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:12:22,182 INFO L231 Difference]: Finished difference. Result has 480 places, 1524 transitions, 23427 flow [2022-11-20 12:12:22,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=4666, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=141, PETRI_FLOW=23427, PETRI_PLACES=480, PETRI_TRANSITIONS=1524} [2022-11-20 12:12:22,183 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 340 predicate places. [2022-11-20 12:12:22,183 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 1524 transitions, 23427 flow [2022-11-20 12:12:22,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 56.64) internal successors, (4248), 75 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:12:22,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:12:22,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:12:22,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:12:22,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:12:22,391 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-20 12:12:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:12:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1483503436, now seen corresponding path program 1 times [2022-11-20 12:12:22,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:12:22,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726725735] [2022-11-20 12:12:22,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:22,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:12:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:12:23,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:12:23,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726725735] [2022-11-20 12:12:23,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726725735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:12:23,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104504454] [2022-11-20 12:12:23,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:12:23,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:12:23,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:12:23,945 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:12:23,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5241f77-5b78-4a86-9579-016cc03a438f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:12:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:12:24,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-20 12:12:24,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:12:24,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:12:24,192 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:12:24,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:12:24,281 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-20 12:12:24,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2022-11-20 12:12:24,863 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-20 12:12:24,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 34 [2022-11-20 12:12:25,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:12:25,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:12:25,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:12:25,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:12:25,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:12:26,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:12:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:12:26,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:26,406 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_368 (Array Int Int))) (= (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) c_~A~0.base) c_~A~0.offset)) c_~res1~0)) is different from false [2022-11-20 12:12:26,433 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_368 (Array Int Int))) (= (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) c_~A~0.base) c_~A~0.offset)) |c_thread1Thread1of1ForFork0_~tmp~0#1|)) is different from false [2022-11-20 12:12:26,547 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_368 (Array Int Int))) (= (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) c_~A~0.base) c_~A~0.offset)) (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~res1~0))) is different from false [2022-11-20 12:12:26,738 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_366 (Array Int Int)) (v_ArrVal_368 (Array Int Int)) (v_ArrVal_367 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_366) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_367))) (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) c_~A~0.base) c_~A~0.offset) c_~res2~0) (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~res1~0)))) is different from false [2022-11-20 12:12:26,964 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_366 (Array Int Int)) (v_ArrVal_368 (Array Int Int)) (v_ArrVal_367 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_366) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_367))) (= (+ c_~res1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))))) is different from false [2022-11-20 12:12:26,981 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_366 (Array Int Int)) (v_ArrVal_368 (Array Int Int)) (v_ArrVal_367 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_366) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_367))) (= (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~res1~0)))) is different from false [2022-11-20 12:12:27,025 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:12:27,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 43 [2022-11-20 12:12:27,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2566 treesize of output 2406 [2022-11-20 12:12:27,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2406 treesize of output 2278 [2022-11-20 12:12:27,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2278 treesize of output 2150 [2022-11-20 12:12:27,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2150 treesize of output 2070