./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP --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 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:22:00,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:22:01,056 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:22:01,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:22:01,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:22:01,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:22:01,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:22:01,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:22:01,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:22:01,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:22:01,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:22:01,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:22:01,114 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:22:01,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:22:01,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:22:01,115 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:22:01,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:22:01,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:22:01,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:22:01,118 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:22:01,118 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:22:01,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:22:01,120 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:22:01,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:22:01,120 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:22:01,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:22:01,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:22:01,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:22:01,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:22:01,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:22:01,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:22:01,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:22:01,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:22:01,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:22:01,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:22:01,126 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:22:01,127 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:22:01,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:22:01,127 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:22:01,128 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc [2023-11-06 22:22:01,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:22:01,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:22:01,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:22:01,485 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:22:01,485 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:22:01,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2023-11-06 22:22:04,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:22:04,958 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:22:04,961 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2023-11-06 22:22:04,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/data/c8fda2840/e7f0eca76f4441808d4c35ebb393390a/FLAG678bb1298 [2023-11-06 22:22:05,004 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/data/c8fda2840/e7f0eca76f4441808d4c35ebb393390a [2023-11-06 22:22:05,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:22:05,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:22:05,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:22:05,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:22:05,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:22:05,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b71343d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05, skipping insertion in model container [2023-11-06 22:22:05,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:22:05,364 WARN L240 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_52cef0db-0c68-4729-8401-223171e95b59/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2023-11-06 22:22:05,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:22:05,390 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:22:05,486 WARN L240 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_52cef0db-0c68-4729-8401-223171e95b59/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2023-11-06 22:22:05,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:22:05,501 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:22:05,502 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:22:05,511 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:22:05,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05 WrapperNode [2023-11-06 22:22:05,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:22:05,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:22:05,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:22:05,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:22:05,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,636 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1553 [2023-11-06 22:22:05,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:22:05,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:22:05,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:22:05,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:22:05,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:22:05,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:22:05,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:22:05,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:22:05,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (1/1) ... [2023-11-06 22:22:05,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:22:05,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:22:05,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:22:05,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:22:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:22:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:22:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:22:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:22:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:22:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:22:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:22:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:22:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:22:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:22:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:22:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:22:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:22:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:22:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:22:05,937 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:22:06,244 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:22:06,247 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:22:08,332 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:22:10,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:22:10,666 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-06 22:22:10,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:22:10 BoogieIcfgContainer [2023-11-06 22:22:10,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:22:10,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:22:10,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:22:10,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:22:10,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:22:05" (1/3) ... [2023-11-06 22:22:10,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170584e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:22:10, skipping insertion in model container [2023-11-06 22:22:10,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:05" (2/3) ... [2023-11-06 22:22:10,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170584e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:22:10, skipping insertion in model container [2023-11-06 22:22:10,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:22:10" (3/3) ... [2023-11-06 22:22:10,685 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2023-11-06 22:22:10,697 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:22:10,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:22:10,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:22:10,709 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:22:11,114 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:22:11,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 458 places, 504 transitions, 1022 flow [2023-11-06 22:22:11,402 INFO L124 PetriNetUnfolderBase]: 53/502 cut-off events. [2023-11-06 22:22:11,403 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:22:11,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 502 events. 53/502 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 572 event pairs, 0 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 422. Up to 7 conditions per place. [2023-11-06 22:22:11,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 458 places, 504 transitions, 1022 flow [2023-11-06 22:22:11,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 493 transitions, 998 flow [2023-11-06 22:22:11,426 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:22:11,437 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 493 transitions, 998 flow [2023-11-06 22:22:11,440 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 493 transitions, 998 flow [2023-11-06 22:22:11,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 493 transitions, 998 flow [2023-11-06 22:22:11,586 INFO L124 PetriNetUnfolderBase]: 53/493 cut-off events. [2023-11-06 22:22:11,587 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:22:11,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 493 events. 53/493 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 572 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 422. Up to 7 conditions per place. [2023-11-06 22:22:11,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2023-11-06 22:23:28,607 INFO L134 LiptonReduction]: Checked pairs total: 7746 [2023-11-06 22:23:28,607 INFO L136 LiptonReduction]: Total number of compositions: 605 [2023-11-06 22:23:28,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:23:28,631 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;@3460d1f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:23:28,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 22:23:28,687 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:23:28,687 INFO L124 PetriNetUnfolderBase]: 16/38 cut-off events. [2023-11-06 22:23:28,687 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:23:28,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:28,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:28,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:23:28,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1060008706, now seen corresponding path program 1 times [2023-11-06 22:23:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:28,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371414706] [2023-11-06 22:23:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:28,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371414706] [2023-11-06 22:23:29,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371414706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:29,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:29,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:23:29,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737232574] [2023-11-06 22:23:29,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:29,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:23:29,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 1109 [2023-11-06 22:23:29,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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) [2023-11-06 22:23:29,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:29,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 1109 [2023-11-06 22:23:29,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:30,427 INFO L124 PetriNetUnfolderBase]: 133/196 cut-off events. [2023-11-06 22:23:30,427 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:23:30,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 196 events. 133/196 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 373 event pairs, 45 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 308. Up to 193 conditions per place. [2023-11-06 22:23:30,430 INFO L140 encePairwiseOnDemand]: 1100/1109 looper letters, 35 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-11-06 22:23:30,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 184 flow [2023-11-06 22:23:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1247 transitions. [2023-11-06 22:23:30,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37481214307183647 [2023-11-06 22:23:30,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1247 transitions. [2023-11-06 22:23:30,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1247 transitions. [2023-11-06 22:23:30,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:30,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1247 transitions. [2023-11-06 22:23:30,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 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) [2023-11-06 22:23:30,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1109.0) internal successors, (4436), 4 states have internal predecessors, (4436), 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) [2023-11-06 22:23:30,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1109.0) internal successors, (4436), 4 states have internal predecessors, (4436), 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) [2023-11-06 22:23:30,491 INFO L175 Difference]: Start difference. First operand has 30 places, 39 transitions, 90 flow. Second operand 3 states and 1247 transitions. [2023-11-06 22:23:30,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 184 flow [2023-11-06 22:23:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:23:30,498 INFO L231 Difference]: Finished difference. Result has 29 places, 43 transitions, 124 flow [2023-11-06 22:23:30,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1109, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=29, PETRI_TRANSITIONS=43} [2023-11-06 22:23:30,503 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-11-06 22:23:30,503 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 43 transitions, 124 flow [2023-11-06 22:23:30,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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) [2023-11-06 22:23:30,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:30,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:30,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:23:30,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:23:30,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 249321384, now seen corresponding path program 1 times [2023-11-06 22:23:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:30,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082062646] [2023-11-06 22:23:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:23:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082062646] [2023-11-06 22:23:30,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082062646] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903229300] [2023-11-06 22:23:30,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:30,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:30,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:30,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:30,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:23:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:31,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:23:31,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:23:31,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:31,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903229300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:31,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:23:31,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-06 22:23:31,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299289655] [2023-11-06 22:23:31,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:31,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:23:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:23:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:23:31,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 1109 [2023-11-06 22:23:31,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 43 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 407.6666666666667) internal successors, (1223), 3 states have internal predecessors, (1223), 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) [2023-11-06 22:23:31,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:31,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 1109 [2023-11-06 22:23:31,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:32,407 INFO L124 PetriNetUnfolderBase]: 133/200 cut-off events. [2023-11-06 22:23:32,407 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:23:32,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 200 events. 133/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 371 event pairs, 45 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 373. Up to 197 conditions per place. [2023-11-06 22:23:32,409 INFO L140 encePairwiseOnDemand]: 1099/1109 looper letters, 39 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2023-11-06 22:23:32,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 226 flow [2023-11-06 22:23:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:23:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:23:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1247 transitions. [2023-11-06 22:23:32,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37481214307183647 [2023-11-06 22:23:32,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1247 transitions. [2023-11-06 22:23:32,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1247 transitions. [2023-11-06 22:23:32,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:32,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1247 transitions. [2023-11-06 22:23:32,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 415.6666666666667) internal successors, (1247), 3 states have internal predecessors, (1247), 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) [2023-11-06 22:23:32,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1109.0) internal successors, (4436), 4 states have internal predecessors, (4436), 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) [2023-11-06 22:23:32,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1109.0) internal successors, (4436), 4 states have internal predecessors, (4436), 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) [2023-11-06 22:23:32,436 INFO L175 Difference]: Start difference. First operand has 29 places, 43 transitions, 124 flow. Second operand 3 states and 1247 transitions. [2023-11-06 22:23:32,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 226 flow [2023-11-06 22:23:32,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:32,438 INFO L231 Difference]: Finished difference. Result has 31 places, 47 transitions, 160 flow [2023-11-06 22:23:32,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1109, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=31, PETRI_TRANSITIONS=47} [2023-11-06 22:23:32,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-11-06 22:23:32,440 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 47 transitions, 160 flow [2023-11-06 22:23:32,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.6666666666667) internal successors, (1223), 3 states have internal predecessors, (1223), 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) [2023-11-06 22:23:32,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:32,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:32,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:32,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:32,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:23:32,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1115900383, now seen corresponding path program 1 times [2023-11-06 22:23:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647380989] [2023-11-06 22:23:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:32,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:23:33,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:33,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647380989] [2023-11-06 22:23:33,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647380989] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:33,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260165003] [2023-11-06 22:23:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:33,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:33,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:33,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:33,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:23:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:33,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:23:33,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:23:33,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:23:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260165003] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:33,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:23:33,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 22:23:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001130114] [2023-11-06 22:23:33,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:33,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:23:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:23:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:23:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:23:34,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 1109 [2023-11-06 22:23:34,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 47 transitions, 160 flow. Second operand has 8 states, 8 states have (on average 388.125) internal successors, (3105), 8 states have internal predecessors, (3105), 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) [2023-11-06 22:23:34,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:34,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 1109 [2023-11-06 22:23:34,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:34,935 INFO L124 PetriNetUnfolderBase]: 133/216 cut-off events. [2023-11-06 22:23:34,935 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:23:34,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 216 events. 133/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 371 event pairs, 45 based on Foata normal form. 10/142 useless extension candidates. Maximal degree in co-relation 393. Up to 193 conditions per place. [2023-11-06 22:23:34,937 INFO L140 encePairwiseOnDemand]: 1092/1109 looper letters, 31 selfloop transitions, 32 changer transitions 0/63 dead transitions. [2023-11-06 22:23:34,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 63 transitions, 350 flow [2023-11-06 22:23:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:23:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:23:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3151 transitions. [2023-11-06 22:23:34,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35516230838593327 [2023-11-06 22:23:34,952 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3151 transitions. [2023-11-06 22:23:34,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3151 transitions. [2023-11-06 22:23:34,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:34,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3151 transitions. [2023-11-06 22:23:34,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 393.875) internal successors, (3151), 8 states have internal predecessors, (3151), 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) [2023-11-06 22:23:34,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1109.0) internal successors, (9981), 9 states have internal predecessors, (9981), 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) [2023-11-06 22:23:34,993 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1109.0) internal successors, (9981), 9 states have internal predecessors, (9981), 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) [2023-11-06 22:23:34,993 INFO L175 Difference]: Start difference. First operand has 31 places, 47 transitions, 160 flow. Second operand 8 states and 3151 transitions. [2023-11-06 22:23:34,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 63 transitions, 350 flow [2023-11-06 22:23:34,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 63 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:23:34,997 INFO L231 Difference]: Finished difference. Result has 40 places, 63 transitions, 338 flow [2023-11-06 22:23:34,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1109, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=338, PETRI_PLACES=40, PETRI_TRANSITIONS=63} [2023-11-06 22:23:34,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-11-06 22:23:34,999 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 63 transitions, 338 flow [2023-11-06 22:23:35,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 388.125) internal successors, (3105), 8 states have internal predecessors, (3105), 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) [2023-11-06 22:23:35,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:35,002 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:35,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-06 22:23:35,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:23:35,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1683696584, now seen corresponding path program 2 times [2023-11-06 22:23:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:23:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77164112] [2023-11-06 22:23:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:23:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:23:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-06 22:23:35,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:23:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77164112] [2023-11-06 22:23:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77164112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:23:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088429819] [2023-11-06 22:23:35,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:23:35,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:23:35,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:23:35,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:23:35,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:23:36,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:23:36,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:36,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:23:36,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:41,789 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:23:41,791 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1271 treesize of output 1097 [2023-11-06 22:24:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 22:24:21,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:21,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088429819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:21,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:24:21,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-06 22:24:21,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745014256] [2023-11-06 22:24:21,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:21,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:21,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:24:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:21,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 1109 [2023-11-06 22:24:21,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 63 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 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) [2023-11-06 22:24:21,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:21,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 1109 [2023-11-06 22:24:21,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:23,055 INFO L124 PetriNetUnfolderBase]: 220/348 cut-off events. [2023-11-06 22:24:23,055 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:24:23,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 348 events. 220/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 881 event pairs, 29 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 678. Up to 211 conditions per place. [2023-11-06 22:24:23,058 INFO L140 encePairwiseOnDemand]: 1094/1109 looper letters, 77 selfloop transitions, 13 changer transitions 6/96 dead transitions. [2023-11-06 22:24:23,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 96 transitions, 602 flow [2023-11-06 22:24:23,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:24:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2195 transitions. [2023-11-06 22:24:23,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958521190261497 [2023-11-06 22:24:23,074 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2195 transitions. [2023-11-06 22:24:23,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2195 transitions. [2023-11-06 22:24:23,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:23,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2195 transitions. [2023-11-06 22:24:23,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 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) [2023-11-06 22:24:23,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1109.0) internal successors, (6654), 6 states have internal predecessors, (6654), 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) [2023-11-06 22:24:23,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1109.0) internal successors, (6654), 6 states have internal predecessors, (6654), 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) [2023-11-06 22:24:23,099 INFO L175 Difference]: Start difference. First operand has 40 places, 63 transitions, 338 flow. Second operand 5 states and 2195 transitions. [2023-11-06 22:24:23,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 96 transitions, 602 flow [2023-11-06 22:24:23,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 96 transitions, 562 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-06 22:24:23,107 INFO L231 Difference]: Finished difference. Result has 46 places, 74 transitions, 388 flow [2023-11-06 22:24:23,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1109, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=46, PETRI_TRANSITIONS=74} [2023-11-06 22:24:23,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-11-06 22:24:23,109 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 74 transitions, 388 flow [2023-11-06 22:24:23,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 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) [2023-11-06 22:24:23,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:23,110 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:23,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:23,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:23,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:24:23,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1464149422, now seen corresponding path program 3 times [2023-11-06 22:24:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:24:23,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911465547] [2023-11-06 22:24:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:23,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:24:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 22:24:23,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:24:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911465547] [2023-11-06 22:24:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911465547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754945911] [2023-11-06 22:24:23,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:24:23,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:24:23,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:23,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:24:23,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:24:24,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:24:24,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:24,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:24:24,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:29,080 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:24:29,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1307 treesize of output 1133 [2023-11-06 22:25:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 22:25:04,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:04,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754945911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:04,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:25:04,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-06 22:25:04,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746220615] [2023-11-06 22:25:04,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:04,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:25:04,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:25:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:25:04,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 1109 [2023-11-06 22:25:04,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 74 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 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) [2023-11-06 22:25:04,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:04,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 1109 [2023-11-06 22:25:04,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:05,448 INFO L124 PetriNetUnfolderBase]: 222/362 cut-off events. [2023-11-06 22:25:05,449 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-06 22:25:05,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 362 events. 222/362 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 999 event pairs, 31 based on Foata normal form. 3/255 useless extension candidates. Maximal degree in co-relation 1115. Up to 242 conditions per place. [2023-11-06 22:25:05,452 INFO L140 encePairwiseOnDemand]: 1095/1109 looper letters, 78 selfloop transitions, 12 changer transitions 5/95 dead transitions. [2023-11-06 22:25:05,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 95 transitions, 644 flow [2023-11-06 22:25:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:25:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:25:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2193 transitions. [2023-11-06 22:25:05,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39549143372407575 [2023-11-06 22:25:05,461 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2193 transitions. [2023-11-06 22:25:05,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2193 transitions. [2023-11-06 22:25:05,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:05,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2193 transitions. [2023-11-06 22:25:05,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 438.6) internal successors, (2193), 5 states have internal predecessors, (2193), 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) [2023-11-06 22:25:05,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1109.0) internal successors, (6654), 6 states have internal predecessors, (6654), 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) [2023-11-06 22:25:05,483 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1109.0) internal successors, (6654), 6 states have internal predecessors, (6654), 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) [2023-11-06 22:25:05,483 INFO L175 Difference]: Start difference. First operand has 46 places, 74 transitions, 388 flow. Second operand 5 states and 2193 transitions. [2023-11-06 22:25:05,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 95 transitions, 644 flow [2023-11-06 22:25:05,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 95 transitions, 640 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:25:05,489 INFO L231 Difference]: Finished difference. Result has 50 places, 74 transitions, 420 flow [2023-11-06 22:25:05,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1109, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=50, PETRI_TRANSITIONS=74} [2023-11-06 22:25:05,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-11-06 22:25:05,490 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 74 transitions, 420 flow [2023-11-06 22:25:05,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 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) [2023-11-06 22:25:05,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:05,492 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:05,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:05,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:05,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:05,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:05,702 INFO L85 PathProgramCache]: Analyzing trace with hash -876165184, now seen corresponding path program 4 times [2023-11-06 22:25:05,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:05,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324376474] [2023-11-06 22:25:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 22:25:06,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324376474] [2023-11-06 22:25:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324376474] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365938188] [2023-11-06 22:25:06,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:25:06,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:06,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:06,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:25:07,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:25:07,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:07,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:25:07,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 22:25:07,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 22:25:07,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365938188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:07,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:07,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-06 22:25:07,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330443497] [2023-11-06 22:25:07,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:07,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:25:07,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:25:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:25:08,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 1109 [2023-11-06 22:25:08,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 74 transitions, 420 flow. Second operand has 17 states, 17 states have (on average 386.47058823529414) internal successors, (6570), 17 states have internal predecessors, (6570), 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) [2023-11-06 22:25:08,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:08,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 1109 [2023-11-06 22:25:08,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:09,315 INFO L124 PetriNetUnfolderBase]: 221/368 cut-off events. [2023-11-06 22:25:09,315 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2023-11-06 22:25:09,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 368 events. 221/368 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 874 event pairs, 69 based on Foata normal form. 10/268 useless extension candidates. Maximal degree in co-relation 1262. Up to 333 conditions per place. [2023-11-06 22:25:09,319 INFO L140 encePairwiseOnDemand]: 1092/1109 looper letters, 42 selfloop transitions, 44 changer transitions 0/86 dead transitions. [2023-11-06 22:25:09,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 664 flow [2023-11-06 22:25:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:25:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:25:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6231 transitions. [2023-11-06 22:25:09,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3511609558160505 [2023-11-06 22:25:09,342 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6231 transitions. [2023-11-06 22:25:09,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6231 transitions. [2023-11-06 22:25:09,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:09,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6231 transitions. [2023-11-06 22:25:09,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 389.4375) internal successors, (6231), 16 states have internal predecessors, (6231), 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) [2023-11-06 22:25:09,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1109.0) internal successors, (18853), 17 states have internal predecessors, (18853), 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) [2023-11-06 22:25:09,396 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1109.0) internal successors, (18853), 17 states have internal predecessors, (18853), 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) [2023-11-06 22:25:09,396 INFO L175 Difference]: Start difference. First operand has 50 places, 74 transitions, 420 flow. Second operand 16 states and 6231 transitions. [2023-11-06 22:25:09,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 664 flow [2023-11-06 22:25:09,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 651 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:09,402 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 593 flow [2023-11-06 22:25:09,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1109, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=593, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2023-11-06 22:25:09,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2023-11-06 22:25:09,403 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 593 flow [2023-11-06 22:25:09,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 386.47058823529414) internal successors, (6570), 17 states have internal predecessors, (6570), 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) [2023-11-06 22:25:09,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:09,406 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:09,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:09,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:25:09,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:09,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:09,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1192795839, now seen corresponding path program 5 times [2023-11-06 22:25:09,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:09,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627035450] [2023-11-06 22:25:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:09,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-06 22:25:10,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:10,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627035450] [2023-11-06 22:25:10,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627035450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:10,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641142860] [2023-11-06 22:25:10,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:25:10,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:10,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:10,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:10,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52cef0db-0c68-4729-8401-223171e95b59/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process