./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:54:02,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:54:02,886 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:54:02,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:54:02,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:54:02,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:54:02,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:54:02,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:54:02,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:54:02,925 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:54:02,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:54:02,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:54:02,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:54:02,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:54:02,928 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:54:02,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:54:02,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:54:02,931 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:54:02,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:54:02,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:54:02,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:54:02,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:54:02,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:54:02,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:54:02,935 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:54:02,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:54:02,936 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:54:02,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:54:02,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:54:02,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:54:02,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:54:02,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:02,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:54:02,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:54:02,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:54:02,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:54:02,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:54:02,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:54:02,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:54:02,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:54:02,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:54:02,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:54:02,945 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_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 [2023-11-26 11:54:03,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:54:03,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:54:03,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:54:03,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:54:03,378 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:54:03,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2023-11-26 11:54:06,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:54:07,179 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:54:07,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2023-11-26 11:54:07,206 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/data/b91c8108c/56816eb3722f48a49e924c0244c2becb/FLAGd1fe23ebe [2023-11-26 11:54:07,224 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/data/b91c8108c/56816eb3722f48a49e924c0244c2becb [2023-11-26 11:54:07,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:54:07,229 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:54:07,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:07,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:54:07,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:54:07,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:07" (1/1) ... [2023-11-26 11:54:07,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b297c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:07, skipping insertion in model container [2023-11-26 11:54:07,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:07" (1/1) ... [2023-11-26 11:54:07,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:54:07,560 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_7f9e2fc4-6d31-4708-acde-7b3fc833f860/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i[951,964] [2023-11-26 11:54:08,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:08,058 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:54:08,074 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_7f9e2fc4-6d31-4708-acde-7b3fc833f860/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i[951,964] [2023-11-26 11:54:08,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:08,250 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:54:08,250 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:54:08,261 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:54:08,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08 WrapperNode [2023-11-26 11:54:08,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:08,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:08,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:54:08,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:54:08,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,384 INFO L138 Inliner]: procedures = 177, calls = 91, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 183 [2023-11-26 11:54:08,385 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:08,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:54:08,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:54:08,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:54:08,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,431 INFO L175 MemorySlicer]: Split 34 memory accesses to 6 slices as follows [2, 1, 1, 1, 1, 28]. 82 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 0, 0, 0, 1]. The 15 writes are split as follows [0, 1, 1, 1, 1, 11]. [2023-11-26 11:54:08,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,449 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:54:08,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:54:08,511 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:54:08,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:54:08,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (1/1) ... [2023-11-26 11:54:08,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:08,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:54:08,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f9e2fc4-6d31-4708-acde-7b3fc833f860/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:54:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:54:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:54:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:54:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:54:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:54:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:54:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:54:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:54:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:54:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:54:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:54:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:54:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:54:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:54:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:54:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:54:08,697 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:54:08,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:54:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:54:08,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:54:08,698 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:54:08,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:54:08,699 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 11:54:08,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 11:54:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:54:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:54:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:54:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:54:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:54:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:54:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:54:08,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:54:08,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:54:08,706 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:54:08,903 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:54:08,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:54:09,559 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:54:10,207 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:54:10,207 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:54:10,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:10 BoogieIcfgContainer [2023-11-26 11:54:10,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:54:10,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:54:10,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:54:10,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:54:10,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:54:07" (1/3) ... [2023-11-26 11:54:10,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3894c751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:10, skipping insertion in model container [2023-11-26 11:54:10,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:08" (2/3) ... [2023-11-26 11:54:10,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3894c751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:10, skipping insertion in model container [2023-11-26 11:54:10,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:10" (3/3) ... [2023-11-26 11:54:10,225 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2023-11-26 11:54:10,238 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:54:10,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:54:10,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:54:10,253 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:54:10,359 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:54:10,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2023-11-26 11:54:10,478 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2023-11-26 11:54:10,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:54:10,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-26 11:54:10,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2023-11-26 11:54:10,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2023-11-26 11:54:10,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:54:10,524 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=LoopHeads, 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;@25533d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:54:10,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-26 11:54:10,562 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:54:10,562 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-11-26 11:54:10,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:54:10,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:10,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:10,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:10,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash -244111452, now seen corresponding path program 1 times [2023-11-26 11:54:10,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:10,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944852635] [2023-11-26 11:54:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:10,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944852635] [2023-11-26 11:54:11,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944852635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:11,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:11,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210579497] [2023-11-26 11:54:11,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:11,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:11,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2023-11-26 11:54:11,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2023-11-26 11:54:11,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:11,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2023-11-26 11:54:11,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:15,857 INFO L124 PetriNetUnfolderBase]: 8263/12170 cut-off events. [2023-11-26 11:54:15,857 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-26 11:54:15,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23626 conditions, 12170 events. 8263/12170 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 78565 event pairs, 1895 based on Foata normal form. 320/12464 useless extension candidates. Maximal degree in co-relation 23614. Up to 8305 conditions per place. [2023-11-26 11:54:15,998 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 38 selfloop transitions, 3 changer transitions 47/99 dead transitions. [2023-11-26 11:54:15,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 99 transitions, 389 flow [2023-11-26 11:54:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:54:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:54:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2023-11-26 11:54:16,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2023-11-26 11:54:16,018 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 195 transitions. [2023-11-26 11:54:16,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 195 transitions. [2023-11-26 11:54:16,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:16,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 195 transitions. [2023-11-26 11:54:16,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 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) [2023-11-26 11:54:16,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-26 11:54:16,035 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-26 11:54:16,037 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 195 transitions. [2023-11-26 11:54:16,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 99 transitions, 389 flow [2023-11-26 11:54:16,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 99 transitions, 384 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:54:16,053 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 119 flow [2023-11-26 11:54:16,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2023-11-26 11:54:16,060 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-26 11:54:16,061 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 119 flow [2023-11-26 11:54:16,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2023-11-26 11:54:16,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:16,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:16,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:54:16,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:16,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1429218531, now seen corresponding path program 1 times [2023-11-26 11:54:16,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:16,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19907088] [2023-11-26 11:54:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:16,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19907088] [2023-11-26 11:54:16,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19907088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:16,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:16,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88771370] [2023-11-26 11:54:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:16,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:16,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-26 11:54:16,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2023-11-26 11:54:16,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:16,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-26 11:54:16,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:20,373 INFO L124 PetriNetUnfolderBase]: 7530/11329 cut-off events. [2023-11-26 11:54:20,373 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2023-11-26 11:54:20,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25107 conditions, 11329 events. 7530/11329 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 74881 event pairs, 2259 based on Foata normal form. 360/11431 useless extension candidates. Maximal degree in co-relation 25092. Up to 7073 conditions per place. [2023-11-26 11:54:20,530 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 41 selfloop transitions, 2 changer transitions 43/100 dead transitions. [2023-11-26 11:54:20,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 427 flow [2023-11-26 11:54:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:54:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:54:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2023-11-26 11:54:20,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2023-11-26 11:54:20,549 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 200 transitions. [2023-11-26 11:54:20,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 200 transitions. [2023-11-26 11:54:20,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:20,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 200 transitions. [2023-11-26 11:54:20,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2023-11-26 11:54:20,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-26 11:54:20,560 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-26 11:54:20,561 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 119 flow. Second operand 7 states and 200 transitions. [2023-11-26 11:54:20,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 427 flow [2023-11-26 11:54:20,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 100 transitions, 416 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-26 11:54:20,743 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 128 flow [2023-11-26 11:54:20,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2023-11-26 11:54:20,744 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-11-26 11:54:20,745 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 128 flow [2023-11-26 11:54:20,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2023-11-26 11:54:20,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:20,745 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] [2023-11-26 11:54:20,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:54:20,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:20,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:20,747 INFO L85 PathProgramCache]: Analyzing trace with hash 999518726, now seen corresponding path program 1 times [2023-11-26 11:54:20,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:20,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343380421] [2023-11-26 11:54:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:20,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:21,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:21,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343380421] [2023-11-26 11:54:21,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343380421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:21,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:21,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:21,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021178014] [2023-11-26 11:54:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:21,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:21,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:21,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-26 11:54:21,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2023-11-26 11:54:21,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:21,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-26 11:54:21,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:24,387 INFO L124 PetriNetUnfolderBase]: 6200/9332 cut-off events. [2023-11-26 11:54:24,387 INFO L125 PetriNetUnfolderBase]: For 6393/6393 co-relation queries the response was YES. [2023-11-26 11:54:24,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21941 conditions, 9332 events. 6200/9332 cut-off events. For 6393/6393 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 62222 event pairs, 1710 based on Foata normal form. 288/9434 useless extension candidates. Maximal degree in co-relation 21922. Up to 6454 conditions per place. [2023-11-26 11:54:24,488 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 38 selfloop transitions, 3 changer transitions 39/95 dead transitions. [2023-11-26 11:54:24,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 420 flow [2023-11-26 11:54:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:54:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:54:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2023-11-26 11:54:24,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2023-11-26 11:54:24,491 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 201 transitions. [2023-11-26 11:54:24,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 201 transitions. [2023-11-26 11:54:24,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:24,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 201 transitions. [2023-11-26 11:54:24,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 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) [2023-11-26 11:54:24,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-26 11:54:24,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-26 11:54:24,497 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 128 flow. Second operand 7 states and 201 transitions. [2023-11-26 11:54:24,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 420 flow [2023-11-26 11:54:24,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 400 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-26 11:54:24,805 INFO L231 Difference]: Finished difference. Result has 63 places, 42 transitions, 151 flow [2023-11-26 11:54:24,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=151, PETRI_PLACES=63, PETRI_TRANSITIONS=42} [2023-11-26 11:54:24,807 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2023-11-26 11:54:24,808 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 42 transitions, 151 flow [2023-11-26 11:54:24,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2023-11-26 11:54:24,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:24,809 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] [2023-11-26 11:54:24,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:54:24,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:24,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash 934773626, now seen corresponding path program 1 times [2023-11-26 11:54:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:24,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726990406] [2023-11-26 11:54:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:25,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726990406] [2023-11-26 11:54:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726990406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:25,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:25,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:54:25,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652608773] [2023-11-26 11:54:25,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:25,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:25,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:54:25,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-26 11:54:25,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 42 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2023-11-26 11:54:25,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:25,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-26 11:54:25,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:27,527 INFO L124 PetriNetUnfolderBase]: 6088/9277 cut-off events. [2023-11-26 11:54:27,527 INFO L125 PetriNetUnfolderBase]: For 10535/10535 co-relation queries the response was YES. [2023-11-26 11:54:27,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24758 conditions, 9277 events. 6088/9277 cut-off events. For 10535/10535 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 60356 event pairs, 1559 based on Foata normal form. 180/9221 useless extension candidates. Maximal degree in co-relation 24738. Up to 5923 conditions per place. [2023-11-26 11:54:27,638 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 49 selfloop transitions, 11 changer transitions 22/97 dead transitions. [2023-11-26 11:54:27,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 97 transitions, 487 flow [2023-11-26 11:54:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:27,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:54:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2023-11-26 11:54:27,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6703703703703704 [2023-11-26 11:54:27,642 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 181 transitions. [2023-11-26 11:54:27,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 181 transitions. [2023-11-26 11:54:27,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:27,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 181 transitions. [2023-11-26 11:54:27,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 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) [2023-11-26 11:54:27,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:54:27,647 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:54:27,647 INFO L175 Difference]: Start difference. First operand has 63 places, 42 transitions, 151 flow. Second operand 6 states and 181 transitions. [2023-11-26 11:54:27,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 97 transitions, 487 flow [2023-11-26 11:54:27,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 476 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-26 11:54:27,743 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 248 flow [2023-11-26 11:54:27,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2023-11-26 11:54:27,745 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-11-26 11:54:27,746 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 248 flow [2023-11-26 11:54:27,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2023-11-26 11:54:27,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:27,751 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] [2023-11-26 11:54:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:54:27,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:27,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 146091224, now seen corresponding path program 2 times [2023-11-26 11:54:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:27,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491942044] [2023-11-26 11:54:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:27,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:28,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:28,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491942044] [2023-11-26 11:54:28,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491942044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:28,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:28,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:54:28,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693903863] [2023-11-26 11:54:28,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:28,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:28,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:54:28,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2023-11-26 11:54:28,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2023-11-26 11:54:28,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:28,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2023-11-26 11:54:28,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:32,174 INFO L124 PetriNetUnfolderBase]: 12832/18633 cut-off events. [2023-11-26 11:54:32,174 INFO L125 PetriNetUnfolderBase]: For 30464/30467 co-relation queries the response was YES. [2023-11-26 11:54:32,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59149 conditions, 18633 events. 12832/18633 cut-off events. For 30464/30467 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 120317 event pairs, 1499 based on Foata normal form. 270/18886 useless extension candidates. Maximal degree in co-relation 59126. Up to 8335 conditions per place. [2023-11-26 11:54:32,330 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 62 selfloop transitions, 4 changer transitions 55/131 dead transitions. [2023-11-26 11:54:32,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 131 transitions, 912 flow [2023-11-26 11:54:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:54:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2023-11-26 11:54:32,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2023-11-26 11:54:32,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 174 transitions. [2023-11-26 11:54:32,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 174 transitions. [2023-11-26 11:54:32,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:32,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 174 transitions. [2023-11-26 11:54:32,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2023-11-26 11:54:32,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:54:32,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:54:32,337 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 248 flow. Second operand 6 states and 174 transitions. [2023-11-26 11:54:32,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 131 transitions, 912 flow [2023-11-26 11:54:32,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 131 transitions, 888 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:32,606 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 257 flow [2023-11-26 11:54:32,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-11-26 11:54:32,609 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2023-11-26 11:54:32,610 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 257 flow [2023-11-26 11:54:32,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2023-11-26 11:54:32,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:32,610 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] [2023-11-26 11:54:32,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:54:32,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:32,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1388171036, now seen corresponding path program 3 times [2023-11-26 11:54:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:32,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019133068] [2023-11-26 11:54:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:32,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:33,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019133068] [2023-11-26 11:54:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019133068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:33,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:33,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640169525] [2023-11-26 11:54:33,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:33,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:54:33,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:54:33,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:54:33,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-26 11:54:33,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2023-11-26 11:54:33,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:33,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-26 11:54:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:35,239 INFO L124 PetriNetUnfolderBase]: 5631/8724 cut-off events. [2023-11-26 11:54:35,239 INFO L125 PetriNetUnfolderBase]: For 18101/18187 co-relation queries the response was YES. [2023-11-26 11:54:35,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27404 conditions, 8724 events. 5631/8724 cut-off events. For 18101/18187 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 57247 event pairs, 2430 based on Foata normal form. 233/8800 useless extension candidates. Maximal degree in co-relation 27378. Up to 5451 conditions per place. [2023-11-26 11:54:35,306 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 45 selfloop transitions, 3 changer transitions 41/104 dead transitions. [2023-11-26 11:54:35,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 104 transitions, 661 flow [2023-11-26 11:54:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:54:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:54:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2023-11-26 11:54:35,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2023-11-26 11:54:35,308 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 200 transitions. [2023-11-26 11:54:35,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 200 transitions. [2023-11-26 11:54:35,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:35,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 200 transitions. [2023-11-26 11:54:35,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2023-11-26 11:54:35,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-26 11:54:35,311 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-26 11:54:35,311 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 257 flow. Second operand 7 states and 200 transitions. [2023-11-26 11:54:35,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 104 transitions, 661 flow [2023-11-26 11:54:35,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 104 transitions, 641 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-26 11:54:35,372 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 240 flow [2023-11-26 11:54:35,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2023-11-26 11:54:35,373 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2023-11-26 11:54:35,373 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 240 flow [2023-11-26 11:54:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2023-11-26 11:54:35,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:35,374 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] [2023-11-26 11:54:35,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:54:35,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:35,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1063334507, now seen corresponding path program 1 times [2023-11-26 11:54:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:35,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956670640] [2023-11-26 11:54:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:35,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956670640] [2023-11-26 11:54:35,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956670640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:35,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:35,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:54:35,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817461920] [2023-11-26 11:54:35,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:35,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:35,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:35,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:35,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:54:35,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2023-11-26 11:54:35,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2023-11-26 11:54:35,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:35,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2023-11-26 11:54:35,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:39,975 INFO L124 PetriNetUnfolderBase]: 14531/21200 cut-off events. [2023-11-26 11:54:39,975 INFO L125 PetriNetUnfolderBase]: For 38435/38435 co-relation queries the response was YES. [2023-11-26 11:54:40,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65737 conditions, 21200 events. 14531/21200 cut-off events. For 38435/38435 co-relation queries the response was YES. Maximal size of possible extension queue 1060. Compared 144034 event pairs, 3479 based on Foata normal form. 450/21645 useless extension candidates. Maximal degree in co-relation 65710. Up to 6741 conditions per place. [2023-11-26 11:54:40,139 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 55 selfloop transitions, 3 changer transitions 103/171 dead transitions. [2023-11-26 11:54:40,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 171 transitions, 1120 flow [2023-11-26 11:54:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:54:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 11:54:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 301 transitions. [2023-11-26 11:54:40,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6080808080808081 [2023-11-26 11:54:40,146 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 301 transitions. [2023-11-26 11:54:40,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 301 transitions. [2023-11-26 11:54:40,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:40,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 301 transitions. [2023-11-26 11:54:40,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.363636363636363) internal successors, (301), 11 states have internal predecessors, (301), 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) [2023-11-26 11:54:40,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 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) [2023-11-26 11:54:40,151 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 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) [2023-11-26 11:54:40,151 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 240 flow. Second operand 11 states and 301 transitions. [2023-11-26 11:54:40,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 171 transitions, 1120 flow [2023-11-26 11:54:40,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 171 transitions, 1075 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-11-26 11:54:40,758 INFO L231 Difference]: Finished difference. Result has 80 places, 50 transitions, 250 flow [2023-11-26 11:54:40,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=250, PETRI_PLACES=80, PETRI_TRANSITIONS=50} [2023-11-26 11:54:40,759 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2023-11-26 11:54:40,759 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 50 transitions, 250 flow [2023-11-26 11:54:40,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2023-11-26 11:54:40,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:40,760 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] [2023-11-26 11:54:40,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:54:40,760 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:40,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 886548035, now seen corresponding path program 1 times [2023-11-26 11:54:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432374401] [2023-11-26 11:54:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432374401] [2023-11-26 11:54:41,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432374401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:41,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:41,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:54:41,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25434227] [2023-11-26 11:54:41,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:41,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:41,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:41,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:41,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:54:41,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-26 11:54:41,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 50 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2023-11-26 11:54:41,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:41,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-26 11:54:41,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:43,758 INFO L124 PetriNetUnfolderBase]: 8754/13238 cut-off events. [2023-11-26 11:54:43,758 INFO L125 PetriNetUnfolderBase]: For 32250/32407 co-relation queries the response was YES. [2023-11-26 11:54:43,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41631 conditions, 13238 events. 8754/13238 cut-off events. For 32250/32407 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 91283 event pairs, 5020 based on Foata normal form. 252/13148 useless extension candidates. Maximal degree in co-relation 41601. Up to 9180 conditions per place. [2023-11-26 11:54:43,886 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 31 selfloop transitions, 17 changer transitions 20/83 dead transitions. [2023-11-26 11:54:43,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 542 flow [2023-11-26 11:54:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:54:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2023-11-26 11:54:43,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-26 11:54:43,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 162 transitions. [2023-11-26 11:54:43,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 162 transitions. [2023-11-26 11:54:43,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:43,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 162 transitions. [2023-11-26 11:54:43,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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) [2023-11-26 11:54:43,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:54:43,897 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-26 11:54:43,898 INFO L175 Difference]: Start difference. First operand has 80 places, 50 transitions, 250 flow. Second operand 6 states and 162 transitions. [2023-11-26 11:54:43,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 542 flow [2023-11-26 11:54:44,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 497 flow, removed 21 selfloop flow, removed 9 redundant places. [2023-11-26 11:54:44,288 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 323 flow [2023-11-26 11:54:44,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2023-11-26 11:54:44,289 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2023-11-26 11:54:44,289 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 323 flow [2023-11-26 11:54:44,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2023-11-26 11:54:44,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:44,290 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] [2023-11-26 11:54:44,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:54:44,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:44,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:44,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1635558545, now seen corresponding path program 2 times [2023-11-26 11:54:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:44,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515528807] [2023-11-26 11:54:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:46,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515528807] [2023-11-26 11:54:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515528807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:46,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:54:46,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181120411] [2023-11-26 11:54:46,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:46,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:54:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:54:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:54:46,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-26 11:54:46,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 323 flow. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2023-11-26 11:54:46,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:46,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-26 11:54:46,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:50,917 INFO L124 PetriNetUnfolderBase]: 12673/19288 cut-off events. [2023-11-26 11:54:50,917 INFO L125 PetriNetUnfolderBase]: For 35330/35771 co-relation queries the response was YES. [2023-11-26 11:54:50,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64099 conditions, 19288 events. 12673/19288 cut-off events. For 35330/35771 co-relation queries the response was YES. Maximal size of possible extension queue 1052. Compared 141902 event pairs, 3049 based on Foata normal form. 511/19451 useless extension candidates. Maximal degree in co-relation 64073. Up to 7969 conditions per place. [2023-11-26 11:54:51,038 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 49 selfloop transitions, 20 changer transitions 58/142 dead transitions. [2023-11-26 11:54:51,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 142 transitions, 993 flow [2023-11-26 11:54:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:54:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 11:54:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 303 transitions. [2023-11-26 11:54:51,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6121212121212121 [2023-11-26 11:54:51,041 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 303 transitions. [2023-11-26 11:54:51,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 303 transitions. [2023-11-26 11:54:51,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:51,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 303 transitions. [2023-11-26 11:54:51,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.545454545454547) internal successors, (303), 11 states have internal predecessors, (303), 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) [2023-11-26 11:54:51,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 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) [2023-11-26 11:54:51,045 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 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) [2023-11-26 11:54:51,045 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 323 flow. Second operand 11 states and 303 transitions. [2023-11-26 11:54:51,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 142 transitions, 993 flow [2023-11-26 11:54:51,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 142 transitions, 865 flow, removed 55 selfloop flow, removed 4 redundant places. [2023-11-26 11:54:51,282 INFO L231 Difference]: Finished difference. Result has 83 places, 59 transitions, 400 flow [2023-11-26 11:54:51,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=400, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2023-11-26 11:54:51,283 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 32 predicate places. [2023-11-26 11:54:51,284 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 400 flow [2023-11-26 11:54:51,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2023-11-26 11:54:51,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:51,284 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] [2023-11-26 11:54:51,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:54:51,285 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-26 11:54:51,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1707189480, now seen corresponding path program 1 times [2023-11-26 11:54:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:51,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693689677] [2023-11-26 11:54:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693689677] [2023-11-26 11:54:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693689677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:51,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:51,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:54:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426434993] [2023-11-26 11:54:51,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:51,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2023-11-26 11:54:51,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 59 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-26 11:54:51,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:51,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2023-11-26 11:54:51,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand