./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix005.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/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_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix005.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/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_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/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 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:04:20,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:04:20,767 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:04:20,773 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:04:20,773 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:04:20,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:04:20,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:04:20,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:04:20,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:04:20,804 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:04:20,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:04:20,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:04:20,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:04:20,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:04:20,807 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:04:20,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:04:20,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:04:20,808 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:04:20,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:04:20,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:04:20,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:04:20,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:04:20,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:04:20,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:04:20,811 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:04:20,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:04:20,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:04:20,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:04:20,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:04:20,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:04:20,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:04:20,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:20,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:04:20,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:04:20,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:04:20,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:04:20,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:04:20,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:04:20,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:04:20,816 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:04:20,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:04:20,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:04:20,820 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_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 [2023-11-26 12:04:21,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:04:21,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:04:21,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:04:21,154 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:04:21,154 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:04:21,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix005.opt.i [2023-11-26 12:04:24,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:04:24,503 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:04:24,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/sv-benchmarks/c/pthread-wmm/mix005.opt.i [2023-11-26 12:04:24,541 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/data/6d350a2c5/c60771d28d6047fd959debc08be90e34/FLAG5410ee6f7 [2023-11-26 12:04:24,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/data/6d350a2c5/c60771d28d6047fd959debc08be90e34 [2023-11-26 12:04:24,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:04:24,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:04:24,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:24,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:04:24,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:04:24,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8e6b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24, skipping insertion in model container [2023-11-26 12:04:24,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,653 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:04:24,880 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_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/sv-benchmarks/c/pthread-wmm/mix005.opt.i[944,957] [2023-11-26 12:04:25,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:25,199 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:04:25,214 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_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/sv-benchmarks/c/pthread-wmm/mix005.opt.i[944,957] [2023-11-26 12:04:25,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:25,345 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:25,346 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:25,354 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:04:25,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25 WrapperNode [2023-11-26 12:04:25,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:25,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:25,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:04:25,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:04:25,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,443 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2023-11-26 12:04:25,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:25,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:04:25,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:04:25,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:04:25,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,482 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 12:04:25,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:04:25,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:04:25,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:04:25,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:04:25,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (1/1) ... [2023-11-26 12:04:25,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:25,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:25,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:04:25,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a334de7c-7d10-433e-8ea8-ff82f2ff2e2d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:04:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:04:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:04:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:04:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:04:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:04:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:04:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:04:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:04:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:04:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 12:04:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 12:04:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 12:04:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 12:04:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 12:04:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 12:04:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 12:04:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 12:04:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:04:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:04:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:04:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:04:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:04:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:04:25,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:04:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:04:25,605 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 12:04:25,791 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:04:25,794 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:04:26,162 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:04:26,529 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:04:26,529 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:04:26,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:26 BoogieIcfgContainer [2023-11-26 12:04:26,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:04:26,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:04:26,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:04:26,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:04:26,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:04:24" (1/3) ... [2023-11-26 12:04:26,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26226e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:26, skipping insertion in model container [2023-11-26 12:04:26,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:25" (2/3) ... [2023-11-26 12:04:26,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26226e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:26, skipping insertion in model container [2023-11-26 12:04:26,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:26" (3/3) ... [2023-11-26 12:04:26,543 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2023-11-26 12:04:26,552 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:04:26,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:04:26,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 12:04:26,563 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:04:26,637 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:04:26,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 12:04:26,742 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-26 12:04:26,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:04:26,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-26 12:04:26,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 12:04:26,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-26 12:04:26,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:26,784 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;@21c9395f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:26,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 12:04:26,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:04:26,801 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2023-11-26 12:04:26,802 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:04:26,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:26,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:26,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:04:26,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:26,807 INFO L85 PathProgramCache]: Analyzing trace with hash 830149687, now seen corresponding path program 1 times [2023-11-26 12:04:26,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:26,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511306674] [2023-11-26 12:04:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:26,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:27,481 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 12:04:27,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:27,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511306674] [2023-11-26 12:04:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511306674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:27,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:27,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:04:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213413614] [2023-11-26 12:04:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:27,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:27,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:27,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:27,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2023-11-26 12:04:27,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 12:04:27,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:27,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2023-11-26 12:04:27,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:28,088 INFO L124 PetriNetUnfolderBase]: 879/1527 cut-off events. [2023-11-26 12:04:28,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:04:28,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 1527 events. 879/1527 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10504 event pairs, 159 based on Foata normal form. 60/1545 useless extension candidates. Maximal degree in co-relation 2835. Up to 1009 conditions per place. [2023-11-26 12:04:28,148 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 26 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-11-26 12:04:28,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 178 flow [2023-11-26 12:04:28,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-26 12:04:28,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.76 [2023-11-26 12:04:28,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-26 12:04:28,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-26 12:04:28,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:28,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-26 12:04:28,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 12:04:28,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 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 12:04:28,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 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 12:04:28,186 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 114 transitions. [2023-11-26 12:04:28,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 178 flow [2023-11-26 12:04:28,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:04:28,200 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-26 12:04:28,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-11-26 12:04:28,208 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-26 12:04:28,209 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-26 12:04:28,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 12:04:28,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:28,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:28,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:04:28,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:04:28,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:28,211 INFO L85 PathProgramCache]: Analyzing trace with hash 944084550, now seen corresponding path program 1 times [2023-11-26 12:04:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:28,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532177052] [2023-11-26 12:04:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:28,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:28,758 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 12:04:28,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:28,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532177052] [2023-11-26 12:04:28,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532177052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:28,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:28,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:28,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249132706] [2023-11-26 12:04:28,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:28,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:04:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:04:28,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:28,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2023-11-26 12:04:28,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 12:04:28,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:28,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2023-11-26 12:04:28,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:32,459 INFO L124 PetriNetUnfolderBase]: 14679/22080 cut-off events. [2023-11-26 12:04:32,460 INFO L125 PetriNetUnfolderBase]: For 846/846 co-relation queries the response was YES. [2023-11-26 12:04:32,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43220 conditions, 22080 events. 14679/22080 cut-off events. For 846/846 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 165831 event pairs, 3899 based on Foata normal form. 0/21387 useless extension candidates. Maximal degree in co-relation 43210. Up to 9077 conditions per place. [2023-11-26 12:04:32,669 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 41 selfloop transitions, 8 changer transitions 84/148 dead transitions. [2023-11-26 12:04:32,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 592 flow [2023-11-26 12:04:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:04:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:04:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2023-11-26 12:04:32,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2023-11-26 12:04:32,674 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 306 transitions. [2023-11-26 12:04:32,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 306 transitions. [2023-11-26 12:04:32,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:32,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 306 transitions. [2023-11-26 12:04:32,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 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 12:04:32,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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 12:04:32,681 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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 12:04:32,682 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 306 transitions. [2023-11-26 12:04:32,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 592 flow [2023-11-26 12:04:32,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:04:32,709 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2023-11-26 12:04:32,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-11-26 12:04:32,711 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-26 12:04:32,711 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2023-11-26 12:04:32,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 12:04:32,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:32,712 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 12:04:32,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:04:32,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:04:32,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1278473405, now seen corresponding path program 1 times [2023-11-26 12:04:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:32,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939931709] [2023-11-26 12:04:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:32,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:33,004 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 12:04:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:33,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939931709] [2023-11-26 12:04:33,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939931709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:33,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:33,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:04:33,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34839039] [2023-11-26 12:04:33,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:33,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:04:33,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:33,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:04:33,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:33,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2023-11-26 12:04:33,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 12:04:33,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:33,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2023-11-26 12:04:33,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:36,007 INFO L124 PetriNetUnfolderBase]: 10587/17319 cut-off events. [2023-11-26 12:04:36,008 INFO L125 PetriNetUnfolderBase]: For 21920/21956 co-relation queries the response was YES. [2023-11-26 12:04:36,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52571 conditions, 17319 events. 10587/17319 cut-off events. For 21920/21956 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 136570 event pairs, 1437 based on Foata normal form. 440/17646 useless extension candidates. Maximal degree in co-relation 52553. Up to 7117 conditions per place. [2023-11-26 12:04:36,277 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 57 selfloop transitions, 9 changer transitions 82/163 dead transitions. [2023-11-26 12:04:36,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 163 transitions, 1062 flow [2023-11-26 12:04:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:04:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:04:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2023-11-26 12:04:36,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-26 12:04:36,283 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2023-11-26 12:04:36,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2023-11-26 12:04:36,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:36,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2023-11-26 12:04:36,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 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 12:04:36,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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 12:04:36,290 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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 12:04:36,291 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 325 transitions. [2023-11-26 12:04:36,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 163 transitions, 1062 flow [2023-11-26 12:04:36,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 163 transitions, 912 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-11-26 12:04:36,483 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 270 flow [2023-11-26 12:04:36,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2023-11-26 12:04:36,485 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-11-26 12:04:36,485 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 270 flow [2023-11-26 12:04:36,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 12:04:36,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:36,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:36,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:04:36,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:04:36,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1375492899, now seen corresponding path program 1 times [2023-11-26 12:04:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:36,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067695920] [2023-11-26 12:04:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:36,789 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 12:04:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:36,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067695920] [2023-11-26 12:04:36,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067695920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:36,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:36,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:04:36,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71056330] [2023-11-26 12:04:36,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:36,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:04:36,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:36,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:04:36,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:36,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2023-11-26 12:04:36,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 12:04:36,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:36,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2023-11-26 12:04:36,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:39,476 INFO L124 PetriNetUnfolderBase]: 9622/15296 cut-off events. [2023-11-26 12:04:39,476 INFO L125 PetriNetUnfolderBase]: For 30770/30773 co-relation queries the response was YES. [2023-11-26 12:04:39,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49720 conditions, 15296 events. 9622/15296 cut-off events. For 30770/30773 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 113864 event pairs, 2513 based on Foata normal form. 358/15551 useless extension candidates. Maximal degree in co-relation 49695. Up to 7480 conditions per place. [2023-11-26 12:04:39,624 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 59 selfloop transitions, 18 changer transitions 68/160 dead transitions. [2023-11-26 12:04:39,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 160 transitions, 1088 flow [2023-11-26 12:04:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:04:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:04:39,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2023-11-26 12:04:39,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.656 [2023-11-26 12:04:39,628 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2023-11-26 12:04:39,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2023-11-26 12:04:39,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:39,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2023-11-26 12:04:39,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 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 12:04:39,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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 12:04:39,633 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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 12:04:39,633 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 270 flow. Second operand 10 states and 328 transitions. [2023-11-26 12:04:39,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 160 transitions, 1088 flow [2023-11-26 12:04:39,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 160 transitions, 1037 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-11-26 12:04:39,973 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 385 flow [2023-11-26 12:04:39,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2023-11-26 12:04:39,976 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-26 12:04:39,977 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 385 flow [2023-11-26 12:04:39,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 12:04:39,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:39,978 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 12:04:39,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:04:39,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:04:39,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash -474106942, now seen corresponding path program 1 times [2023-11-26 12:04:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:39,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494001871] [2023-11-26 12:04:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:40,232 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 12:04:40,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:40,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494001871] [2023-11-26 12:04:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494001871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:40,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:40,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:04:40,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259791240] [2023-11-26 12:04:40,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:40,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:04:40,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:04:40,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:40,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2023-11-26 12:04:40,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 12:04:40,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:40,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2023-11-26 12:04:40,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:42,776 INFO L124 PetriNetUnfolderBase]: 8536/13714 cut-off events. [2023-11-26 12:04:42,777 INFO L125 PetriNetUnfolderBase]: For 39018/39045 co-relation queries the response was YES. [2023-11-26 12:04:42,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48868 conditions, 13714 events. 8536/13714 cut-off events. For 39018/39045 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 102643 event pairs, 1762 based on Foata normal form. 306/13909 useless extension candidates. Maximal degree in co-relation 48838. Up to 5100 conditions per place. [2023-11-26 12:04:42,913 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 58 selfloop transitions, 17 changer transitions 64/154 dead transitions. [2023-11-26 12:04:42,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 1290 flow [2023-11-26 12:04:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:04:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:04:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2023-11-26 12:04:42,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.608 [2023-11-26 12:04:42,916 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2023-11-26 12:04:42,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2023-11-26 12:04:42,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:42,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2023-11-26 12:04:42,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 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 12:04:42,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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 12:04:42,920 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 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 12:04:42,920 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 385 flow. Second operand 10 states and 304 transitions. [2023-11-26 12:04:42,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 1290 flow [2023-11-26 12:04:43,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 154 transitions, 1180 flow, removed 55 selfloop flow, removed 10 redundant places. [2023-11-26 12:04:43,867 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 542 flow [2023-11-26 12:04:43,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=542, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-11-26 12:04:43,868 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-11-26 12:04:43,868 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 542 flow [2023-11-26 12:04:43,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 12:04:43,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:43,869 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 12:04:43,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:04:43,869 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:04:43,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:43,870 INFO L85 PathProgramCache]: Analyzing trace with hash -223214220, now seen corresponding path program 1 times [2023-11-26 12:04:43,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:43,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076984419] [2023-11-26 12:04:43,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:44,185 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 12:04:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076984419] [2023-11-26 12:04:44,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076984419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:44,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:44,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308274748] [2023-11-26 12:04:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:44,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:44,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 12:04:44,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 12:04:44,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:44,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 12:04:44,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:47,628 INFO L124 PetriNetUnfolderBase]: 15874/24105 cut-off events. [2023-11-26 12:04:47,629 INFO L125 PetriNetUnfolderBase]: For 56493/59797 co-relation queries the response was YES. [2023-11-26 12:04:47,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70375 conditions, 24105 events. 15874/24105 cut-off events. For 56493/59797 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 179312 event pairs, 2659 based on Foata normal form. 1229/24360 useless extension candidates. Maximal degree in co-relation 70344. Up to 11958 conditions per place. [2023-11-26 12:04:47,867 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 60 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-11-26 12:04:47,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 105 transitions, 888 flow [2023-11-26 12:04:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:04:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2023-11-26 12:04:47,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.715 [2023-11-26 12:04:47,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 143 transitions. [2023-11-26 12:04:47,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 143 transitions. [2023-11-26 12:04:47,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:47,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 143 transitions. [2023-11-26 12:04:47,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 12:04:47,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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 12:04:47,873 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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 12:04:47,873 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 542 flow. Second operand 4 states and 143 transitions. [2023-11-26 12:04:47,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 105 transitions, 888 flow [2023-11-26 12:04:48,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 865 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-26 12:04:48,421 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 571 flow [2023-11-26 12:04:48,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=571, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-11-26 12:04:48,422 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2023-11-26 12:04:48,422 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 571 flow [2023-11-26 12:04:48,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 12:04:48,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:48,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:48,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:04:48,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:04:48,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:48,424 INFO L85 PathProgramCache]: Analyzing trace with hash -721017737, now seen corresponding path program 1 times [2023-11-26 12:04:48,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:48,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587430181] [2023-11-26 12:04:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:48,972 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 12:04:48,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587430181] [2023-11-26 12:04:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587430181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:48,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:48,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:04:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893182428] [2023-11-26 12:04:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:48,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:04:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:04:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:49,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2023-11-26 12:04:49,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 571 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 12:04:49,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:49,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2023-11-26 12:04:49,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:53,103 INFO L124 PetriNetUnfolderBase]: 19456/30280 cut-off events. [2023-11-26 12:04:53,103 INFO L125 PetriNetUnfolderBase]: For 75782/77091 co-relation queries the response was YES. [2023-11-26 12:04:53,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102322 conditions, 30280 events. 19456/30280 cut-off events. For 75782/77091 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 239077 event pairs, 8576 based on Foata normal form. 392/28109 useless extension candidates. Maximal degree in co-relation 102290. Up to 13460 conditions per place. [2023-11-26 12:04:53,399 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 90 selfloop transitions, 21 changer transitions 8/139 dead transitions. [2023-11-26 12:04:53,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 139 transitions, 1093 flow [2023-11-26 12:04:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:04:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:04:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2023-11-26 12:04:53,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6275 [2023-11-26 12:04:53,402 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 251 transitions. [2023-11-26 12:04:53,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 251 transitions. [2023-11-26 12:04:53,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:53,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 251 transitions. [2023-11-26 12:04:53,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.375) internal successors, (251), 8 states have internal predecessors, (251), 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 12:04:53,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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 12:04:53,406 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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 12:04:53,406 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 571 flow. Second operand 8 states and 251 transitions. [2023-11-26 12:04:53,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 139 transitions, 1093 flow [2023-11-26 12:04:53,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 139 transitions, 1079 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-26 12:04:53,893 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 621 flow [2023-11-26 12:04:53,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=621, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2023-11-26 12:04:53,894 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-11-26 12:04:53,894 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 621 flow [2023-11-26 12:04:53,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 12:04:53,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:53,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:04:53,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:04:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1866173235, now seen corresponding path program 1 times [2023-11-26 12:04:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709106669] [2023-11-26 12:04:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:54,174 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 12:04:54,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:54,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709106669] [2023-11-26 12:04:54,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709106669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:54,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:54,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:04:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464026643] [2023-11-26 12:04:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:54,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:04:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:04:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:04:54,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2023-11-26 12:04:54,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 621 flow. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 12:04:54,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:54,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2023-11-26 12:04:54,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:01,052 INFO L124 PetriNetUnfolderBase]: 32525/52371 cut-off events. [2023-11-26 12:05:01,052 INFO L125 PetriNetUnfolderBase]: For 143160/144815 co-relation queries the response was YES. [2023-11-26 12:05:01,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170713 conditions, 52371 events. 32525/52371 cut-off events. For 143160/144815 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 471145 event pairs, 7265 based on Foata normal form. 427/48680 useless extension candidates. Maximal degree in co-relation 170679. Up to 16534 conditions per place. [2023-11-26 12:05:01,429 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 113 selfloop transitions, 36 changer transitions 9/177 dead transitions. [2023-11-26 12:05:01,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 177 transitions, 1637 flow [2023-11-26 12:05:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:05:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 12:05:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2023-11-26 12:05:01,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6525 [2023-11-26 12:05:01,431 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 261 transitions. [2023-11-26 12:05:01,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 261 transitions. [2023-11-26 12:05:01,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:01,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 261 transitions. [2023-11-26 12:05:01,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 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 12:05:01,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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 12:05:01,435 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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 12:05:01,435 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 621 flow. Second operand 8 states and 261 transitions. [2023-11-26 12:05:01,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 177 transitions, 1637 flow [2023-11-26 12:05:02,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 177 transitions, 1519 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-26 12:05:02,590 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 926 flow [2023-11-26 12:05:02,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-11-26 12:05:02,591 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2023-11-26 12:05:02,591 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 926 flow [2023-11-26 12:05:02,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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 12:05:02,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:02,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:02,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:05:02,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:05:02,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash -774176091, now seen corresponding path program 2 times [2023-11-26 12:05:02,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:02,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556105010] [2023-11-26 12:05:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:02,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:02,827 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 12:05:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:02,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556105010] [2023-11-26 12:05:02,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556105010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:02,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:02,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:05:02,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585129319] [2023-11-26 12:05:02,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:02,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:05:02,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:02,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:05:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:05:02,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 12:05:02,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 926 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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 12:05:02,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:02,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 12:05:02,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:05:10,867 INFO L124 PetriNetUnfolderBase]: 34309/51927 cut-off events. [2023-11-26 12:05:10,867 INFO L125 PetriNetUnfolderBase]: For 107693/116777 co-relation queries the response was YES. [2023-11-26 12:05:11,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162966 conditions, 51927 events. 34309/51927 cut-off events. For 107693/116777 co-relation queries the response was YES. Maximal size of possible extension queue 2805. Compared 418964 event pairs, 3750 based on Foata normal form. 2581/52866 useless extension candidates. Maximal degree in co-relation 162927. Up to 21145 conditions per place. [2023-11-26 12:05:11,294 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 86 selfloop transitions, 10 changer transitions 5/152 dead transitions. [2023-11-26 12:05:11,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 1538 flow [2023-11-26 12:05:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:05:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:05:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2023-11-26 12:05:11,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.732 [2023-11-26 12:05:11,296 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 183 transitions. [2023-11-26 12:05:11,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 183 transitions. [2023-11-26 12:05:11,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:05:11,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 183 transitions. [2023-11-26 12:05:11,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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 12:05:11,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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 12:05:11,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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 12:05:11,299 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 926 flow. Second operand 5 states and 183 transitions. [2023-11-26 12:05:11,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 1538 flow [2023-11-26 12:05:13,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 152 transitions, 1520 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-26 12:05:13,147 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 941 flow [2023-11-26 12:05:13,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=941, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2023-11-26 12:05:13,148 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-11-26 12:05:13,149 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 941 flow [2023-11-26 12:05:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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 12:05:13,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:05:13,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:13,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:05:13,150 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 12:05:13,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash -974056429, now seen corresponding path program 1 times [2023-11-26 12:05:13,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129234667] [2023-11-26 12:05:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:13,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:13,419 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 12:05:13,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:13,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129234667] [2023-11-26 12:05:13,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129234667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:05:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951051502] [2023-11-26 12:05:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:05:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:05:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:05:13,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 12:05:13,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 941 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 12:05:13,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:13,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 12:05:13,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand