./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/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_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/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_b242da2d-4bbd-4da5-9a54-7d3732636b33/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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:24,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:24,752 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:00:24,758 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:24,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:24,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:24,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:24,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:24,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:24,817 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:24,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:24,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:24,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:24,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:24,822 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:24,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:24,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:24,824 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:24,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:24,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:24,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:24,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:24,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:24,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:24,827 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:24,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:24,828 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:24,828 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:24,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:24,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:24,829 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:24,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:24,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:24,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:24,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:24,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:24,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:24,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:24,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:24,832 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:24,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:24,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:24,832 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_b242da2d-4bbd-4da5-9a54-7d3732636b33/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2023-11-26 12:00:25,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:25,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:25,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:25,232 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:25,232 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:25,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-26 12:00:28,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:28,560 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:28,560 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-26 12:00:28,570 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/data/cc34bc0a9/95289e6f2302434981acfdf5bb530b1c/FLAG1ab0fefa8 [2023-11-26 12:00:28,586 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/data/cc34bc0a9/95289e6f2302434981acfdf5bb530b1c [2023-11-26 12:00:28,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:28,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:28,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:28,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:28,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:28,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:28,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6ebc65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28, skipping insertion in model container [2023-11-26 12:00:28,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:28,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:28,867 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_b242da2d-4bbd-4da5-9a54-7d3732636b33/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2023-11-26 12:00:28,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:28,887 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:28,920 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_b242da2d-4bbd-4da5-9a54-7d3732636b33/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2023-11-26 12:00:28,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:28,935 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:28,935 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:28,944 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:28,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28 WrapperNode [2023-11-26 12:00:28,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:28,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:28,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:28,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:28,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:28,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,001 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 270 [2023-11-26 12:00:29,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:29,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:29,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:29,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:29,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,021 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,041 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 2, 7, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 2, 1, 1]. [2023-11-26 12:00:29,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,041 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:29,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:29,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:29,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:29,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (1/1) ... [2023-11-26 12:00:29,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:29,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:29,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:29,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b242da2d-4bbd-4da5-9a54-7d3732636b33/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:00:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:00:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:00:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:00:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:00:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:00:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:00:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:00:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:00:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:00:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:00:29,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:00:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:00:29,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:00:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 12:00:29,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 12:00:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:00:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:00:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:00:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:00:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:00:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:00:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:00:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:29,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:29,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:29,202 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 12:00:29,407 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:29,409 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:29,986 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:30,477 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:30,477 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-26 12:00:30,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:30 BoogieIcfgContainer [2023-11-26 12:00:30,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:30,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:30,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:30,486 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:30,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:28" (1/3) ... [2023-11-26 12:00:30,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b924ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:30, skipping insertion in model container [2023-11-26 12:00:30,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:28" (2/3) ... [2023-11-26 12:00:30,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b924ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:30, skipping insertion in model container [2023-11-26 12:00:30,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:30" (3/3) ... [2023-11-26 12:00:30,490 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2023-11-26 12:00:30,500 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:00:30,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:30,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:00:30,514 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:30,574 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 12:00:30,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 46 transitions, 113 flow [2023-11-26 12:00:30,651 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2023-11-26 12:00:30,651 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:00:30,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 43 events. 7/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-26 12:00:30,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 46 transitions, 113 flow [2023-11-26 12:00:30,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 42 transitions, 102 flow [2023-11-26 12:00:30,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:30,677 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;@38e9e6ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:30,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 12:00:30,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:30,696 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2023-11-26 12:00:30,696 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:00:30,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:30,697 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] [2023-11-26 12:00:30,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:30,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1512367794, now seen corresponding path program 1 times [2023-11-26 12:00:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:30,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052391523] [2023-11-26 12:00:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:30,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:31,054 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 12:00:31,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052391523] [2023-11-26 12:00:31,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052391523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:31,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:31,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32555141] [2023-11-26 12:00:31,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:31,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:00:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:31,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:00:31,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:00:31,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-26 12:00:31,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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 12:00:31,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:31,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-26 12:00:31,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:31,601 INFO L124 PetriNetUnfolderBase]: 1141/1823 cut-off events. [2023-11-26 12:00:31,601 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-26 12:00:31,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 1823 events. 1141/1823 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8692 event pairs, 945 based on Foata normal form. 168/1850 useless extension candidates. Maximal degree in co-relation 3078. Up to 1541 conditions per place. [2023-11-26 12:00:31,626 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 32 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2023-11-26 12:00:31,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 162 flow [2023-11-26 12:00:31,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:00:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-26 12:00:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2023-11-26 12:00:31,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2023-11-26 12:00:31,640 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 56 transitions. [2023-11-26 12:00:31,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 56 transitions. [2023-11-26 12:00:31,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:31,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 56 transitions. [2023-11-26 12:00:31,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 12:00:31,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 12:00:31,654 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 12:00:31,656 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 102 flow. Second operand 2 states and 56 transitions. [2023-11-26 12:00:31,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 162 flow [2023-11-26 12:00:31,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 12:00:31,669 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 86 flow [2023-11-26 12:00:31,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-11-26 12:00:31,676 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-11-26 12:00:31,677 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 86 flow [2023-11-26 12:00:31,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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 12:00:31,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:31,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:31,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:00:31,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:31,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash 483062152, now seen corresponding path program 1 times [2023-11-26 12:00:31,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:31,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416795835] [2023-11-26 12:00:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:32,026 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 12:00:32,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:32,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416795835] [2023-11-26 12:00:32,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416795835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:32,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:32,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:32,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749896587] [2023-11-26 12:00:32,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:32,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:32,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:32,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:32,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-26 12:00:32,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 12:00:32,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:32,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-26 12:00:32,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:32,353 INFO L124 PetriNetUnfolderBase]: 1033/1727 cut-off events. [2023-11-26 12:00:32,353 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-26 12:00:32,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3231 conditions, 1727 events. 1033/1727 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8498 event pairs, 319 based on Foata normal form. 42/1664 useless extension candidates. Maximal degree in co-relation 3228. Up to 1109 conditions per place. [2023-11-26 12:00:32,371 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 44 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-26 12:00:32,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 208 flow [2023-11-26 12:00:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-26 12:00:32,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2023-11-26 12:00:32,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-26 12:00:32,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-26 12:00:32,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:32,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-26 12:00:32,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 12:00:32,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 12:00:32,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 12:00:32,392 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 86 flow. Second operand 3 states and 80 transitions. [2023-11-26 12:00:32,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 208 flow [2023-11-26 12:00:32,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:32,397 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 98 flow [2023-11-26 12:00:32,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-26 12:00:32,398 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-11-26 12:00:32,398 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 98 flow [2023-11-26 12:00:32,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 12:00:32,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:32,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:32,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:00:32,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:32,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1343573562, now seen corresponding path program 2 times [2023-11-26 12:00:32,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:32,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848812255] [2023-11-26 12:00:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:32,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:32,726 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 12:00:32,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:32,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848812255] [2023-11-26 12:00:32,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848812255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:32,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:32,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:32,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040641007] [2023-11-26 12:00:32,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:32,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:32,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:32,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-26 12:00:32,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:32,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-26 12:00:32,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:33,100 INFO L124 PetriNetUnfolderBase]: 1082/1826 cut-off events. [2023-11-26 12:00:33,100 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-26 12:00:33,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1826 events. 1082/1826 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9006 event pairs, 872 based on Foata normal form. 42/1763 useless extension candidates. Maximal degree in co-relation 3653. Up to 1453 conditions per place. [2023-11-26 12:00:33,117 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 32 selfloop transitions, 2 changer transitions 15/57 dead transitions. [2023-11-26 12:00:33,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 231 flow [2023-11-26 12:00:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2023-11-26 12:00:33,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608695652173913 [2023-11-26 12:00:33,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2023-11-26 12:00:33,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2023-11-26 12:00:33,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:33,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2023-11-26 12:00:33,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 12:00:33,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 12:00:33,124 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 12:00:33,124 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 98 flow. Second operand 5 states and 106 transitions. [2023-11-26 12:00:33,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 231 flow [2023-11-26 12:00:33,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:33,127 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 118 flow [2023-11-26 12:00:33,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-11-26 12:00:33,128 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-11-26 12:00:33,128 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 118 flow [2023-11-26 12:00:33,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:33,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:33,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:00:33,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:33,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash -2073841455, now seen corresponding path program 1 times [2023-11-26 12:00:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:33,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438287986] [2023-11-26 12:00:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:00:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438287986] [2023-11-26 12:00:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438287986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:33,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:33,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129624888] [2023-11-26 12:00:33,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:33,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:33,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:33,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:33,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:33,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-26 12:00:33,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 12:00:33,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:33,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-26 12:00:33,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:33,776 INFO L124 PetriNetUnfolderBase]: 1240/2099 cut-off events. [2023-11-26 12:00:33,776 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2023-11-26 12:00:33,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2099 events. 1240/2099 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10841 event pairs, 1012 based on Foata normal form. 40/2029 useless extension candidates. Maximal degree in co-relation 4495. Up to 1454 conditions per place. [2023-11-26 12:00:33,797 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 33 selfloop transitions, 2 changer transitions 18/61 dead transitions. [2023-11-26 12:00:33,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 276 flow [2023-11-26 12:00:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2023-11-26 12:00:33,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2023-11-26 12:00:33,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 96 transitions. [2023-11-26 12:00:33,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 96 transitions. [2023-11-26 12:00:33,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:33,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 96 transitions. [2023-11-26 12:00:33,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 12:00:33,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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 12:00:33,803 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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 12:00:33,803 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 118 flow. Second operand 4 states and 96 transitions. [2023-11-26 12:00:33,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 276 flow [2023-11-26 12:00:33,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 264 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:33,807 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 124 flow [2023-11-26 12:00:33,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-11-26 12:00:33,808 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-11-26 12:00:33,808 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 124 flow [2023-11-26 12:00:33,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 12:00:33,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:33,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:33,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:00:33,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:33,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:33,810 INFO L85 PathProgramCache]: Analyzing trace with hash -503728581, now seen corresponding path program 1 times [2023-11-26 12:00:33,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:33,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859336478] [2023-11-26 12:00:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:35,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859336478] [2023-11-26 12:00:35,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859336478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:35,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:35,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:35,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985350061] [2023-11-26 12:00:35,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:35,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:35,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:35,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:35,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 124 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:35,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:35,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:35,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:36,412 INFO L124 PetriNetUnfolderBase]: 1699/2863 cut-off events. [2023-11-26 12:00:36,413 INFO L125 PetriNetUnfolderBase]: For 780/784 co-relation queries the response was YES. [2023-11-26 12:00:36,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 2863 events. 1699/2863 cut-off events. For 780/784 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 16077 event pairs, 108 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 6246. Up to 1730 conditions per place. [2023-11-26 12:00:36,443 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 112 selfloop transitions, 27 changer transitions 4/150 dead transitions. [2023-11-26 12:00:36,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 150 transitions, 711 flow [2023-11-26 12:00:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 12:00:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 261 transitions. [2023-11-26 12:00:36,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2023-11-26 12:00:36,448 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 261 transitions. [2023-11-26 12:00:36,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 261 transitions. [2023-11-26 12:00:36,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:36,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 261 transitions. [2023-11-26 12:00:36,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.75) internal successors, (261), 12 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 12:00:36,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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 12:00:36,457 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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 12:00:36,457 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 124 flow. Second operand 12 states and 261 transitions. [2023-11-26 12:00:36,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 150 transitions, 711 flow [2023-11-26 12:00:36,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 150 transitions, 693 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:36,464 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 270 flow [2023-11-26 12:00:36,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=270, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2023-11-26 12:00:36,468 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2023-11-26 12:00:36,468 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 270 flow [2023-11-26 12:00:36,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:36,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:36,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:36,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:36,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:36,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1606494193, now seen corresponding path program 2 times [2023-11-26 12:00:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:36,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546785262] [2023-11-26 12:00:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:36,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:36,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546785262] [2023-11-26 12:00:36,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546785262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:36,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:36,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935318074] [2023-11-26 12:00:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:36,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:00:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:00:36,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:00:36,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-26 12:00:36,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 12:00:36,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:36,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-26 12:00:36,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:36,972 INFO L124 PetriNetUnfolderBase]: 1307/2260 cut-off events. [2023-11-26 12:00:36,972 INFO L125 PetriNetUnfolderBase]: For 1331/1335 co-relation queries the response was YES. [2023-11-26 12:00:36,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5958 conditions, 2260 events. 1307/2260 cut-off events. For 1331/1335 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11803 event pairs, 419 based on Foata normal form. 18/2214 useless extension candidates. Maximal degree in co-relation 5944. Up to 1846 conditions per place. [2023-11-26 12:00:37,000 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 63 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-26 12:00:37,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 421 flow [2023-11-26 12:00:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:00:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:00:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-26 12:00:37,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2023-11-26 12:00:37,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-26 12:00:37,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-26 12:00:37,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:37,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-26 12:00:37,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 12:00:37,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 12:00:37,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 12:00:37,004 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 270 flow. Second operand 3 states and 76 transitions. [2023-11-26 12:00:37,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 421 flow [2023-11-26 12:00:37,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:00:37,013 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 273 flow [2023-11-26 12:00:37,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-11-26 12:00:37,017 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2023-11-26 12:00:37,017 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 273 flow [2023-11-26 12:00:37,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 12:00:37,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:37,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:37,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:00:37,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:37,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:37,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1077678769, now seen corresponding path program 3 times [2023-11-26 12:00:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001466746] [2023-11-26 12:00:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:38,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:38,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001466746] [2023-11-26 12:00:38,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001466746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:38,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:38,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:38,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404946794] [2023-11-26 12:00:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:38,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:38,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:38,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:38,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:38,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 273 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:38,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:38,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:38,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:39,122 INFO L124 PetriNetUnfolderBase]: 1564/2687 cut-off events. [2023-11-26 12:00:39,122 INFO L125 PetriNetUnfolderBase]: For 2156/2156 co-relation queries the response was YES. [2023-11-26 12:00:39,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 2687 events. 1564/2687 cut-off events. For 2156/2156 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14784 event pairs, 387 based on Foata normal form. 1/2607 useless extension candidates. Maximal degree in co-relation 7454. Up to 1928 conditions per place. [2023-11-26 12:00:39,155 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 98 selfloop transitions, 28 changer transitions 4/137 dead transitions. [2023-11-26 12:00:39,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 798 flow [2023-11-26 12:00:39,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:00:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:00:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2023-11-26 12:00:39,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2023-11-26 12:00:39,158 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 223 transitions. [2023-11-26 12:00:39,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 223 transitions. [2023-11-26 12:00:39,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:39,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 223 transitions. [2023-11-26 12:00:39,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.272727272727273) internal successors, (223), 11 states have internal predecessors, (223), 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 12:00:39,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:39,162 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:39,162 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 273 flow. Second operand 11 states and 223 transitions. [2023-11-26 12:00:39,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 798 flow [2023-11-26 12:00:39,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 137 transitions, 767 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:39,170 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 420 flow [2023-11-26 12:00:39,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=420, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2023-11-26 12:00:39,171 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2023-11-26 12:00:39,171 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 420 flow [2023-11-26 12:00:39,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:39,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:39,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:39,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:00:39,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:39,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash 447732539, now seen corresponding path program 4 times [2023-11-26 12:00:39,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:39,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138544683] [2023-11-26 12:00:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:39,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:40,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:40,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138544683] [2023-11-26 12:00:40,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138544683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:40,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:40,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:40,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532554896] [2023-11-26 12:00:40,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:40,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:40,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:40,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 420 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:40,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:40,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:40,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:41,411 INFO L124 PetriNetUnfolderBase]: 1717/2985 cut-off events. [2023-11-26 12:00:41,412 INFO L125 PetriNetUnfolderBase]: For 2989/2989 co-relation queries the response was YES. [2023-11-26 12:00:41,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 2985 events. 1717/2985 cut-off events. For 2989/2989 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16831 event pairs, 573 based on Foata normal form. 1/2902 useless extension candidates. Maximal degree in co-relation 8451. Up to 2066 conditions per place. [2023-11-26 12:00:41,443 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 111 selfloop transitions, 34 changer transitions 4/156 dead transitions. [2023-11-26 12:00:41,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 156 transitions, 1018 flow [2023-11-26 12:00:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:00:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:00:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2023-11-26 12:00:41,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2023-11-26 12:00:41,483 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2023-11-26 12:00:41,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2023-11-26 12:00:41,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:41,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2023-11-26 12:00:41,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 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 12:00:41,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:41,487 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:41,487 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 420 flow. Second operand 11 states and 232 transitions. [2023-11-26 12:00:41,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 156 transitions, 1018 flow [2023-11-26 12:00:41,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 987 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:41,500 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 615 flow [2023-11-26 12:00:41,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=615, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2023-11-26 12:00:41,501 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2023-11-26 12:00:41,501 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 615 flow [2023-11-26 12:00:41,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:41,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:41,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:41,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:00:41,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:41,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1490659131, now seen corresponding path program 5 times [2023-11-26 12:00:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:41,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256130035] [2023-11-26 12:00:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:41,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256130035] [2023-11-26 12:00:42,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256130035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:42,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:42,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:42,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914831468] [2023-11-26 12:00:42,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:42,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:42,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:42,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:42,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:42,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 615 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:42,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:42,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:42,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:43,900 INFO L124 PetriNetUnfolderBase]: 1953/3461 cut-off events. [2023-11-26 12:00:43,900 INFO L125 PetriNetUnfolderBase]: For 6403/6419 co-relation queries the response was YES. [2023-11-26 12:00:43,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10793 conditions, 3461 events. 1953/3461 cut-off events. For 6403/6419 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21024 event pairs, 373 based on Foata normal form. 5/3358 useless extension candidates. Maximal degree in co-relation 10767. Up to 2100 conditions per place. [2023-11-26 12:00:43,948 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 45 changer transitions 4/184 dead transitions. [2023-11-26 12:00:43,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 184 transitions, 1310 flow [2023-11-26 12:00:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 12:00:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 260 transitions. [2023-11-26 12:00:43,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2023-11-26 12:00:43,950 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 260 transitions. [2023-11-26 12:00:43,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 260 transitions. [2023-11-26 12:00:43,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:43,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 260 transitions. [2023-11-26 12:00:43,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 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 12:00:43,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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 12:00:43,954 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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 12:00:43,954 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 615 flow. Second operand 12 states and 260 transitions. [2023-11-26 12:00:43,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 184 transitions, 1310 flow [2023-11-26 12:00:43,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 184 transitions, 1280 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:43,974 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 772 flow [2023-11-26 12:00:43,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=772, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2023-11-26 12:00:43,976 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2023-11-26 12:00:43,977 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 772 flow [2023-11-26 12:00:43,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:43,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:43,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:43,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:00:43,978 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:43,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1790488061, now seen corresponding path program 6 times [2023-11-26 12:00:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:43,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983420773] [2023-11-26 12:00:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:43,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:45,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:45,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983420773] [2023-11-26 12:00:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983420773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:45,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:45,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949383278] [2023-11-26 12:00:45,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:45,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:45,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:45,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:45,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:45,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 772 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:45,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:45,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:45,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:46,449 INFO L124 PetriNetUnfolderBase]: 2102/3768 cut-off events. [2023-11-26 12:00:46,449 INFO L125 PetriNetUnfolderBase]: For 9626/9642 co-relation queries the response was YES. [2023-11-26 12:00:46,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12483 conditions, 3768 events. 2102/3768 cut-off events. For 9626/9642 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23607 event pairs, 513 based on Foata normal form. 5/3654 useless extension candidates. Maximal degree in co-relation 12453. Up to 2569 conditions per place. [2023-11-26 12:00:46,578 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 133 selfloop transitions, 41 changer transitions 4/185 dead transitions. [2023-11-26 12:00:46,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 185 transitions, 1467 flow [2023-11-26 12:00:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 12:00:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 254 transitions. [2023-11-26 12:00:46,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2023-11-26 12:00:46,583 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 254 transitions. [2023-11-26 12:00:46,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 254 transitions. [2023-11-26 12:00:46,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:46,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 254 transitions. [2023-11-26 12:00:46,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.166666666666668) internal successors, (254), 12 states have internal predecessors, (254), 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 12:00:46,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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 12:00:46,588 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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 12:00:46,588 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 772 flow. Second operand 12 states and 254 transitions. [2023-11-26 12:00:46,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 185 transitions, 1467 flow [2023-11-26 12:00:46,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 185 transitions, 1376 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-26 12:00:46,651 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 850 flow [2023-11-26 12:00:46,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=850, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2023-11-26 12:00:46,654 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2023-11-26 12:00:46,654 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 850 flow [2023-11-26 12:00:46,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:46,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:46,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:46,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:00:46,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:46,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:46,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1014326441, now seen corresponding path program 7 times [2023-11-26 12:00:46,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:46,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523723254] [2023-11-26 12:00:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:46,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:47,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:47,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523723254] [2023-11-26 12:00:47,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523723254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:47,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:47,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:47,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992278191] [2023-11-26 12:00:47,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:47,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:47,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:47,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:47,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:47,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:47,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:47,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:47,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:48,907 INFO L124 PetriNetUnfolderBase]: 2102/3766 cut-off events. [2023-11-26 12:00:48,907 INFO L125 PetriNetUnfolderBase]: For 11908/11940 co-relation queries the response was YES. [2023-11-26 12:00:48,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12848 conditions, 3766 events. 2102/3766 cut-off events. For 11908/11940 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 23567 event pairs, 533 based on Foata normal form. 21/3664 useless extension candidates. Maximal degree in co-relation 12814. Up to 2688 conditions per place. [2023-11-26 12:00:48,970 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 40 changer transitions 4/179 dead transitions. [2023-11-26 12:00:48,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 1484 flow [2023-11-26 12:00:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 12:00:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 12:00:48,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2023-11-26 12:00:48,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2023-11-26 12:00:48,974 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 244 transitions. [2023-11-26 12:00:48,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 244 transitions. [2023-11-26 12:00:48,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:48,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 244 transitions. [2023-11-26 12:00:48,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 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 12:00:48,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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 12:00:48,978 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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 12:00:48,978 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 850 flow. Second operand 12 states and 244 transitions. [2023-11-26 12:00:48,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 1484 flow [2023-11-26 12:00:49,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 179 transitions, 1375 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-11-26 12:00:49,090 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 872 flow [2023-11-26 12:00:49,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=872, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2023-11-26 12:00:49,091 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2023-11-26 12:00:49,091 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 872 flow [2023-11-26 12:00:49,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:49,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:49,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:49,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:00:49,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:49,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1148452041, now seen corresponding path program 8 times [2023-11-26 12:00:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:49,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291868954] [2023-11-26 12:00:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:49,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:50,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:50,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291868954] [2023-11-26 12:00:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291868954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:50,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:50,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:50,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803481529] [2023-11-26 12:00:50,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:50,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:50,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:50,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:50,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:50,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:50,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 872 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:50,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:50,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:50,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:51,550 INFO L124 PetriNetUnfolderBase]: 2288/4093 cut-off events. [2023-11-26 12:00:51,550 INFO L125 PetriNetUnfolderBase]: For 12908/12940 co-relation queries the response was YES. [2023-11-26 12:00:51,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 4093 events. 2288/4093 cut-off events. For 12908/12940 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 26101 event pairs, 785 based on Foata normal form. 9/3969 useless extension candidates. Maximal degree in co-relation 13926. Up to 3033 conditions per place. [2023-11-26 12:00:51,601 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 135 selfloop transitions, 36 changer transitions 4/182 dead transitions. [2023-11-26 12:00:51,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 182 transitions, 1579 flow [2023-11-26 12:00:51,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:00:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:00:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2023-11-26 12:00:51,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44861660079051385 [2023-11-26 12:00:51,603 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 227 transitions. [2023-11-26 12:00:51,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 227 transitions. [2023-11-26 12:00:51,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:51,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 227 transitions. [2023-11-26 12:00:51,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.636363636363637) internal successors, (227), 11 states have internal predecessors, (227), 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 12:00:51,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:51,607 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:51,607 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 872 flow. Second operand 11 states and 227 transitions. [2023-11-26 12:00:51,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 182 transitions, 1579 flow [2023-11-26 12:00:51,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 182 transitions, 1485 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-26 12:00:51,652 INFO L231 Difference]: Finished difference. Result has 123 places, 123 transitions, 997 flow [2023-11-26 12:00:51,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=997, PETRI_PLACES=123, PETRI_TRANSITIONS=123} [2023-11-26 12:00:51,653 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 78 predicate places. [2023-11-26 12:00:51,653 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 997 flow [2023-11-26 12:00:51,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:51,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:51,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:51,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:00:51,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:51,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:51,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1878574463, now seen corresponding path program 9 times [2023-11-26 12:00:51,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:51,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233923595] [2023-11-26 12:00:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:51,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233923595] [2023-11-26 12:00:52,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233923595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:52,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:52,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513659099] [2023-11-26 12:00:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:52,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:52,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:52,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:52,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:52,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:52,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 997 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:52,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:52,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:52,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:54,319 INFO L124 PetriNetUnfolderBase]: 2462/4428 cut-off events. [2023-11-26 12:00:54,320 INFO L125 PetriNetUnfolderBase]: For 22255/22295 co-relation queries the response was YES. [2023-11-26 12:00:54,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16146 conditions, 4428 events. 2462/4428 cut-off events. For 22255/22295 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29101 event pairs, 887 based on Foata normal form. 11/4300 useless extension candidates. Maximal degree in co-relation 16105. Up to 3310 conditions per place. [2023-11-26 12:00:54,394 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 147 selfloop transitions, 36 changer transitions 4/194 dead transitions. [2023-11-26 12:00:54,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 194 transitions, 1762 flow [2023-11-26 12:00:54,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:00:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:00:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2023-11-26 12:00:54,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-26 12:00:54,397 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 230 transitions. [2023-11-26 12:00:54,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 230 transitions. [2023-11-26 12:00:54,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:54,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 230 transitions. [2023-11-26 12:00:54,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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 12:00:54,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:54,402 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:54,402 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 997 flow. Second operand 11 states and 230 transitions. [2023-11-26 12:00:54,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 194 transitions, 1762 flow [2023-11-26 12:00:54,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 194 transitions, 1648 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:54,465 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 1091 flow [2023-11-26 12:00:54,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1091, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2023-11-26 12:00:54,467 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2023-11-26 12:00:54,467 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 1091 flow [2023-11-26 12:00:54,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:54,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:54,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:54,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:00:54,470 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:54,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:54,471 INFO L85 PathProgramCache]: Analyzing trace with hash 934765565, now seen corresponding path program 10 times [2023-11-26 12:00:54,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:54,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776397202] [2023-11-26 12:00:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:54,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:55,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776397202] [2023-11-26 12:00:55,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776397202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:55,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:55,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:55,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934049384] [2023-11-26 12:00:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:55,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:55,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:55,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:55,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 1091 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:55,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:55,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:55,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:56,982 INFO L124 PetriNetUnfolderBase]: 2672/4780 cut-off events. [2023-11-26 12:00:56,982 INFO L125 PetriNetUnfolderBase]: For 29442/29506 co-relation queries the response was YES. [2023-11-26 12:00:57,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18182 conditions, 4780 events. 2672/4780 cut-off events. For 29442/29506 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 31790 event pairs, 977 based on Foata normal form. 9/4635 useless extension candidates. Maximal degree in co-relation 18137. Up to 3593 conditions per place. [2023-11-26 12:00:57,064 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 153 selfloop transitions, 37 changer transitions 4/201 dead transitions. [2023-11-26 12:00:57,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 201 transitions, 1899 flow [2023-11-26 12:00:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:00:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:00:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2023-11-26 12:00:57,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2023-11-26 12:00:57,069 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 231 transitions. [2023-11-26 12:00:57,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 231 transitions. [2023-11-26 12:00:57,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:57,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 231 transitions. [2023-11-26 12:00:57,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 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 12:00:57,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:57,075 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:57,075 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 1091 flow. Second operand 11 states and 231 transitions. [2023-11-26 12:00:57,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 201 transitions, 1899 flow [2023-11-26 12:00:57,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 201 transitions, 1773 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:57,194 INFO L231 Difference]: Finished difference. Result has 139 places, 139 transitions, 1187 flow [2023-11-26 12:00:57,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1187, PETRI_PLACES=139, PETRI_TRANSITIONS=139} [2023-11-26 12:00:57,196 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2023-11-26 12:00:57,196 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 139 transitions, 1187 flow [2023-11-26 12:00:57,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:57,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:57,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:57,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:00:57,198 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:57,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:57,198 INFO L85 PathProgramCache]: Analyzing trace with hash 646716533, now seen corresponding path program 11 times [2023-11-26 12:00:57,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:57,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726121197] [2023-11-26 12:00:57,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:57,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:00:58,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726121197] [2023-11-26 12:00:58,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726121197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:58,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:58,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:00:58,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670775244] [2023-11-26 12:00:58,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:58,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:00:58,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:00:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:00:58,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:00:58,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 139 transitions, 1187 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:58,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:58,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:00:58,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:59,417 INFO L124 PetriNetUnfolderBase]: 2746/4907 cut-off events. [2023-11-26 12:00:59,417 INFO L125 PetriNetUnfolderBase]: For 35529/35633 co-relation queries the response was YES. [2023-11-26 12:00:59,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19020 conditions, 4907 events. 2746/4907 cut-off events. For 35529/35633 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32814 event pairs, 1113 based on Foata normal form. 23/4778 useless extension candidates. Maximal degree in co-relation 18971. Up to 3889 conditions per place. [2023-11-26 12:00:59,479 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 145 selfloop transitions, 36 changer transitions 5/193 dead transitions. [2023-11-26 12:00:59,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 193 transitions, 1847 flow [2023-11-26 12:00:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:00:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:00:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2023-11-26 12:00:59,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268774703557312 [2023-11-26 12:00:59,482 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 216 transitions. [2023-11-26 12:00:59,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 216 transitions. [2023-11-26 12:00:59,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:59,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 216 transitions. [2023-11-26 12:00:59,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.636363636363637) internal successors, (216), 11 states have internal predecessors, (216), 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 12:00:59,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:59,486 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:00:59,486 INFO L175 Difference]: Start difference. First operand has 139 places, 139 transitions, 1187 flow. Second operand 11 states and 216 transitions. [2023-11-26 12:00:59,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 193 transitions, 1847 flow [2023-11-26 12:00:59,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 193 transitions, 1715 flow, removed 47 selfloop flow, removed 6 redundant places. [2023-11-26 12:00:59,621 INFO L231 Difference]: Finished difference. Result has 146 places, 145 transitions, 1222 flow [2023-11-26 12:00:59,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1222, PETRI_PLACES=146, PETRI_TRANSITIONS=145} [2023-11-26 12:00:59,622 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2023-11-26 12:00:59,622 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 145 transitions, 1222 flow [2023-11-26 12:00:59,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:00:59,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:59,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:59,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:00:59,623 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:00:59,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash -994736065, now seen corresponding path program 12 times [2023-11-26 12:00:59,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:59,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888887757] [2023-11-26 12:00:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:00,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:00,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888887757] [2023-11-26 12:01:00,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888887757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:00,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:00,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:01:00,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179938967] [2023-11-26 12:01:00,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:00,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:01:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:01:00,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:00,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:01:00,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 145 transitions, 1222 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:01:00,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:00,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:01:00,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:02,384 INFO L124 PetriNetUnfolderBase]: 2936/5215 cut-off events. [2023-11-26 12:01:02,384 INFO L125 PetriNetUnfolderBase]: For 36767/36847 co-relation queries the response was YES. [2023-11-26 12:01:02,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20181 conditions, 5215 events. 2936/5215 cut-off events. For 36767/36847 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35366 event pairs, 1155 based on Foata normal form. 29/5096 useless extension candidates. Maximal degree in co-relation 20128. Up to 3919 conditions per place. [2023-11-26 12:01:02,462 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 158 selfloop transitions, 42 changer transitions 4/211 dead transitions. [2023-11-26 12:01:02,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 211 transitions, 2064 flow [2023-11-26 12:01:02,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:01:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-26 12:01:02,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525691699604743 [2023-11-26 12:01:02,465 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-26 12:01:02,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-26 12:01:02,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:02,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-26 12:01:02,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 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 12:01:02,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:01:02,470 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:01:02,470 INFO L175 Difference]: Start difference. First operand has 146 places, 145 transitions, 1222 flow. Second operand 11 states and 229 transitions. [2023-11-26 12:01:02,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 211 transitions, 2064 flow [2023-11-26 12:01:02,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 1956 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-11-26 12:01:02,633 INFO L231 Difference]: Finished difference. Result has 153 places, 152 transitions, 1379 flow [2023-11-26 12:01:02,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1379, PETRI_PLACES=153, PETRI_TRANSITIONS=152} [2023-11-26 12:01:02,634 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 108 predicate places. [2023-11-26 12:01:02,634 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 152 transitions, 1379 flow [2023-11-26 12:01:02,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:01:02,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:02,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:02,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:01:02,636 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:01:02,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1876532691, now seen corresponding path program 13 times [2023-11-26 12:01:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556551604] [2023-11-26 12:01:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:02,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:03,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:03,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556551604] [2023-11-26 12:01:03,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556551604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:03,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:03,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:01:03,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686692780] [2023-11-26 12:01:03,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:03,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:01:03,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:03,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:01:03,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:03,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:01:03,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 152 transitions, 1379 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:01:03,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:03,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:01:03,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:04,852 INFO L124 PetriNetUnfolderBase]: 2936/5219 cut-off events. [2023-11-26 12:01:04,852 INFO L125 PetriNetUnfolderBase]: For 43167/43231 co-relation queries the response was YES. [2023-11-26 12:01:04,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20910 conditions, 5219 events. 2936/5219 cut-off events. For 43167/43231 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35239 event pairs, 1197 based on Foata normal form. 19/5084 useless extension candidates. Maximal degree in co-relation 20853. Up to 4132 conditions per place. [2023-11-26 12:01:04,942 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 161 selfloop transitions, 37 changer transitions 5/210 dead transitions. [2023-11-26 12:01:04,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 210 transitions, 2100 flow [2023-11-26 12:01:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:01:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2023-11-26 12:01:04,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2023-11-26 12:01:04,945 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 223 transitions. [2023-11-26 12:01:04,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 223 transitions. [2023-11-26 12:01:04,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:04,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 223 transitions. [2023-11-26 12:01:04,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.272727272727273) internal successors, (223), 11 states have internal predecessors, (223), 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 12:01:04,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:01:04,951 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:01:04,951 INFO L175 Difference]: Start difference. First operand has 153 places, 152 transitions, 1379 flow. Second operand 11 states and 223 transitions. [2023-11-26 12:01:04,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 210 transitions, 2100 flow [2023-11-26 12:01:05,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 210 transitions, 1942 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-11-26 12:01:05,127 INFO L231 Difference]: Finished difference. Result has 159 places, 156 transitions, 1348 flow [2023-11-26 12:01:05,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1348, PETRI_PLACES=159, PETRI_TRANSITIONS=156} [2023-11-26 12:01:05,128 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2023-11-26 12:01:05,128 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 1348 flow [2023-11-26 12:01:05,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:01:05,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:05,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:05,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 12:01:05,129 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:01:05,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:05,130 INFO L85 PathProgramCache]: Analyzing trace with hash -935166021, now seen corresponding path program 14 times [2023-11-26 12:01:05,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:05,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344496440] [2023-11-26 12:01:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:05,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344496440] [2023-11-26 12:01:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344496440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:05,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:05,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:01:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542115233] [2023-11-26 12:01:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:01:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:01:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:05,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:01:05,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 156 transitions, 1348 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:01:05,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:05,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:01:05,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:07,139 INFO L124 PetriNetUnfolderBase]: 2936/5211 cut-off events. [2023-11-26 12:01:07,140 INFO L125 PetriNetUnfolderBase]: For 38404/38490 co-relation queries the response was YES. [2023-11-26 12:01:07,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20280 conditions, 5211 events. 2936/5211 cut-off events. For 38404/38490 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35270 event pairs, 1205 based on Foata normal form. 35/5100 useless extension candidates. Maximal degree in co-relation 20220. Up to 4128 conditions per place. [2023-11-26 12:01:07,185 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 159 selfloop transitions, 41 changer transitions 5/212 dead transitions. [2023-11-26 12:01:07,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 212 transitions, 2041 flow [2023-11-26 12:01:07,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:01:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2023-11-26 12:01:07,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2023-11-26 12:01:07,186 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 222 transitions. [2023-11-26 12:01:07,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 222 transitions. [2023-11-26 12:01:07,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:07,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 222 transitions. [2023-11-26 12:01:07,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 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 12:01:07,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:01:07,189 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:01:07,189 INFO L175 Difference]: Start difference. First operand has 159 places, 156 transitions, 1348 flow. Second operand 11 states and 222 transitions. [2023-11-26 12:01:07,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 212 transitions, 2041 flow [2023-11-26 12:01:07,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 212 transitions, 1935 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-26 12:01:07,338 INFO L231 Difference]: Finished difference. Result has 163 places, 160 transitions, 1388 flow [2023-11-26 12:01:07,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1388, PETRI_PLACES=163, PETRI_TRANSITIONS=160} [2023-11-26 12:01:07,339 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2023-11-26 12:01:07,339 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 160 transitions, 1388 flow [2023-11-26 12:01:07,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:01:07,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:07,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:07,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 12:01:07,340 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:01:07,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:07,341 INFO L85 PathProgramCache]: Analyzing trace with hash 391042775, now seen corresponding path program 15 times [2023-11-26 12:01:07,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:07,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058659533] [2023-11-26 12:01:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:07,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:01:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058659533] [2023-11-26 12:01:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058659533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 12:01:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810956329] [2023-11-26 12:01:08,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:08,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:01:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:01:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:01:08,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-26 12:01:08,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 160 transitions, 1388 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:01:08,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:08,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-26 12:01:08,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:09,425 INFO L124 PetriNetUnfolderBase]: 2988/5302 cut-off events. [2023-11-26 12:01:09,425 INFO L125 PetriNetUnfolderBase]: For 38702/38788 co-relation queries the response was YES. [2023-11-26 12:01:09,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20523 conditions, 5302 events. 2988/5302 cut-off events. For 38702/38788 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 36098 event pairs, 1269 based on Foata normal form. 35/5181 useless extension candidates. Maximal degree in co-relation 20461. Up to 4280 conditions per place. [2023-11-26 12:01:09,472 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 165 selfloop transitions, 37 changer transitions 4/213 dead transitions. [2023-11-26 12:01:09,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 213 transitions, 2064 flow [2023-11-26 12:01:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:01:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:01:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2023-11-26 12:01:09,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308300395256917 [2023-11-26 12:01:09,474 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 218 transitions. [2023-11-26 12:01:09,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 218 transitions. [2023-11-26 12:01:09,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:09,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 218 transitions. [2023-11-26 12:01:09,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 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 12:01:09,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:01:09,477 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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 12:01:09,477 INFO L175 Difference]: Start difference. First operand has 163 places, 160 transitions, 1388 flow. Second operand 11 states and 218 transitions. [2023-11-26 12:01:09,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 213 transitions, 2064 flow [2023-11-26 12:01:09,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 213 transitions, 1940 flow, removed 23 selfloop flow, removed 8 redundant places. [2023-11-26 12:01:09,592 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1390 flow [2023-11-26 12:01:09,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2023-11-26 12:01:09,593 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 122 predicate places. [2023-11-26 12:01:09,593 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1390 flow [2023-11-26 12:01:09,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 12:01:09,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:09,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:09,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 12:01:09,594 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 12:01:09,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash 503210621, now seen corresponding path program 16 times [2023-11-26 12:01:09,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:09,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160140624] [2023-11-26 12:01:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:09,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms