./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/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_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/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_a70f7fda-a1de-4e05-aae2-27526c1f8be9/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 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:43,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:43,145 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:45:43,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:43,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:43,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:43,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:43,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:43,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:43,206 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:43,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:43,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:43,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:43,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:43,211 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:43,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:43,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:43,212 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:43,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:43,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:43,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:43,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:43,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:43,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:43,216 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:43,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:43,217 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:43,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:43,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:43,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:43,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:43,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:43,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:43,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:43,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:43,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:43,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:43,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:43,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:43,223 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:43,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:43,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:43,224 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_a70f7fda-a1de-4e05-aae2-27526c1f8be9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2023-11-26 11:45:43,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:43,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:43,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:43,564 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:43,564 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:43,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-26 11:45:46,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:47,030 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:47,031 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2023-11-26 11:45:47,041 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/data/55099e327/686e0dbe44ae4b988fce394488081dcb/FLAGa9c39aaed [2023-11-26 11:45:47,063 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/data/55099e327/686e0dbe44ae4b988fce394488081dcb [2023-11-26 11:45:47,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:47,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:47,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:47,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:47,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:47,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312e6ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47, skipping insertion in model container [2023-11-26 11:45:47,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,111 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:47,336 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_a70f7fda-a1de-4e05-aae2-27526c1f8be9/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3336,3349] [2023-11-26 11:45:47,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:47,366 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:47,398 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_a70f7fda-a1de-4e05-aae2-27526c1f8be9/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3336,3349] [2023-11-26 11:45:47,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:47,413 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:47,413 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:45:47,422 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:47,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47 WrapperNode [2023-11-26 11:45:47,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:47,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:47,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:47,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:47,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,488 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 180 [2023-11-26 11:45:47,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:47,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:47,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:47,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:47,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,534 INFO L175 MemorySlicer]: Split 25 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 13, 2]. 52 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 3, 1]. [2023-11-26 11:45:47,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:47,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:47,600 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:47,600 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:47,601 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (1/1) ... [2023-11-26 11:45:47,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:47,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:47,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:47,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:45:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:45:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:45:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:45:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:45:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:45:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:45:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:45:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:45:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:45:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:45:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:45:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:45:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:45:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:45:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:45:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:45:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:45:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:45:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:45:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:45:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-26 11:45:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-26 11:45:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:45:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:45:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:45:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:45:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:45:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:45:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-26 11:45:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-26 11:45:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:45:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:45:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:45:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:45:47,682 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:45:47,853 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:47,855 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:48,234 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:48,664 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:48,664 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-26 11:45:48,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:48 BoogieIcfgContainer [2023-11-26 11:45:48,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:48,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:48,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:48,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:48,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:47" (1/3) ... [2023-11-26 11:45:48,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356844c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:48, skipping insertion in model container [2023-11-26 11:45:48,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:47" (2/3) ... [2023-11-26 11:45:48,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356844c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:48, skipping insertion in model container [2023-11-26 11:45:48,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:48" (3/3) ... [2023-11-26 11:45:48,678 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2023-11-26 11:45:48,688 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:45:48,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:48,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:48,700 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:45:48,774 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-26 11:45:48,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 59 transitions, 153 flow [2023-11-26 11:45:48,856 INFO L124 PetriNetUnfolderBase]: 5/54 cut-off events. [2023-11-26 11:45:48,856 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 11:45:48,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 54 events. 5/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-11-26 11:45:48,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 59 transitions, 153 flow [2023-11-26 11:45:48,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 53 transitions, 136 flow [2023-11-26 11:45:48,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:48,882 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;@4a87c9d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:48,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 11:45:48,907 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:45:48,908 INFO L124 PetriNetUnfolderBase]: 5/52 cut-off events. [2023-11-26 11:45:48,908 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-26 11:45:48,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:48,909 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, 1, 1, 1, 1, 1] [2023-11-26 11:45:48,909 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 3 more)] === [2023-11-26 11:45:48,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2128190068, now seen corresponding path program 1 times [2023-11-26 11:45:48,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:48,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298349696] [2023-11-26 11:45:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:49,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:49,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298349696] [2023-11-26 11:45:49,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298349696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:49,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:49,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:49,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069691185] [2023-11-26 11:45:49,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:49,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:49,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:49,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:49,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2023-11-26 11:45:49,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:49,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:49,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2023-11-26 11:45:49,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:53,273 INFO L124 PetriNetUnfolderBase]: 19022/25535 cut-off events. [2023-11-26 11:45:53,274 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2023-11-26 11:45:53,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50980 conditions, 25535 events. 19022/25535 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 156168 event pairs, 9036 based on Foata normal form. 746/25689 useless extension candidates. Maximal degree in co-relation 45287. Up to 15793 conditions per place. [2023-11-26 11:45:53,666 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 61 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-11-26 11:45:53,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 324 flow [2023-11-26 11:45:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-26 11:45:53,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805084745762712 [2023-11-26 11:45:53,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-26 11:45:53,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-26 11:45:53,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:53,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-26 11:45:53,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,699 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 136 flow. Second operand 4 states and 137 transitions. [2023-11-26 11:45:53,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 324 flow [2023-11-26 11:45:53,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 296 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-26 11:45:53,765 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 130 flow [2023-11-26 11:45:53,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-11-26 11:45:53,772 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2023-11-26 11:45:53,772 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 130 flow [2023-11-26 11:45:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:53,773 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:53,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:53,774 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 3 more)] === [2023-11-26 11:45:53,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash -276973944, now seen corresponding path program 1 times [2023-11-26 11:45:53,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672702897] [2023-11-26 11:45:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:53,950 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 11:45:53,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672702897] [2023-11-26 11:45:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672702897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:53,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:53,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120399259] [2023-11-26 11:45:53,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:53,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:53,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:53,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:53,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:53,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-26 11:45:53,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:53,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:53,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-26 11:45:53,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:58,177 INFO L124 PetriNetUnfolderBase]: 24711/33202 cut-off events. [2023-11-26 11:45:58,178 INFO L125 PetriNetUnfolderBase]: For 5476/5476 co-relation queries the response was YES. [2023-11-26 11:45:58,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70181 conditions, 33202 events. 24711/33202 cut-off events. For 5476/5476 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 201079 event pairs, 13878 based on Foata normal form. 792/33320 useless extension candidates. Maximal degree in co-relation 9315. Up to 22788 conditions per place. [2023-11-26 11:45:58,574 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 64 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-11-26 11:45:58,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 328 flow [2023-11-26 11:45:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:58,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-26 11:45:58,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2023-11-26 11:45:58,582 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-26 11:45:58,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-26 11:45:58,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:58,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-26 11:45:58,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:58,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:58,590 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:58,590 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 130 flow. Second operand 4 states and 134 transitions. [2023-11-26 11:45:58,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 328 flow [2023-11-26 11:45:58,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:58,612 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 140 flow [2023-11-26 11:45:58,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-11-26 11:45:58,614 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2023-11-26 11:45:58,614 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 140 flow [2023-11-26 11:45:58,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:58,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:58,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:58,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:58,615 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 3 more)] === [2023-11-26 11:45:58,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:58,626 INFO L85 PathProgramCache]: Analyzing trace with hash 708818271, now seen corresponding path program 1 times [2023-11-26 11:45:58,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:58,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373233042] [2023-11-26 11:45:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:58,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:45:58,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373233042] [2023-11-26 11:45:58,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373233042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:58,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:58,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10196696] [2023-11-26 11:45:58,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:58,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:58,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:58,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:58,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-26 11:45:58,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:58,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:58,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-26 11:45:58,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:02,912 INFO L124 PetriNetUnfolderBase]: 28504/38008 cut-off events. [2023-11-26 11:46:02,912 INFO L125 PetriNetUnfolderBase]: For 7412/8517 co-relation queries the response was YES. [2023-11-26 11:46:02,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84580 conditions, 38008 events. 28504/38008 cut-off events. For 7412/8517 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 226942 event pairs, 16499 based on Foata normal form. 2149/39399 useless extension candidates. Maximal degree in co-relation 22074. Up to 25792 conditions per place. [2023-11-26 11:46:03,204 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 66 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-11-26 11:46:03,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 349 flow [2023-11-26 11:46:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:46:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2023-11-26 11:46:03,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2023-11-26 11:46:03,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 134 transitions. [2023-11-26 11:46:03,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 134 transitions. [2023-11-26 11:46:03,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:03,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 134 transitions. [2023-11-26 11:46:03,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,209 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 140 flow. Second operand 4 states and 134 transitions. [2023-11-26 11:46:03,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 349 flow [2023-11-26 11:46:03,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:46:03,219 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 150 flow [2023-11-26 11:46:03,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-11-26 11:46:03,221 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-26 11:46:03,221 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 150 flow [2023-11-26 11:46:03,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:03,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:03,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:46:03,222 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 3 more)] === [2023-11-26 11:46:03,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash 939392660, now seen corresponding path program 1 times [2023-11-26 11:46:03,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:03,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483807320] [2023-11-26 11:46:03,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:03,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:03,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483807320] [2023-11-26 11:46:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483807320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:03,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129826109] [2023-11-26 11:46:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:03,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:03,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2023-11-26 11:46:03,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:03,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:03,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2023-11-26 11:46:03,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:08,089 INFO L124 PetriNetUnfolderBase]: 35980/48134 cut-off events. [2023-11-26 11:46:08,090 INFO L125 PetriNetUnfolderBase]: For 13160/16052 co-relation queries the response was YES. [2023-11-26 11:46:08,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111398 conditions, 48134 events. 35980/48134 cut-off events. For 13160/16052 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 307787 event pairs, 19961 based on Foata normal form. 4360/51869 useless extension candidates. Maximal degree in co-relation 31637. Up to 30868 conditions per place. [2023-11-26 11:46:08,419 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 67 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-11-26 11:46:08,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 369 flow [2023-11-26 11:46:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:08,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:46:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-26 11:46:08,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805084745762712 [2023-11-26 11:46:08,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-26 11:46:08,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-26 11:46:08,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:08,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-26 11:46:08,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:08,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:08,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:08,426 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 150 flow. Second operand 4 states and 137 transitions. [2023-11-26 11:46:08,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 369 flow [2023-11-26 11:46:08,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:46:08,443 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 160 flow [2023-11-26 11:46:08,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-11-26 11:46:08,447 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2023-11-26 11:46:08,449 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 160 flow [2023-11-26 11:46:08,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:08,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:08,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:08,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:46:08,456 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 3 more)] === [2023-11-26 11:46:08,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:08,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1875594045, now seen corresponding path program 1 times [2023-11-26 11:46:08,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:08,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175450249] [2023-11-26 11:46:08,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:08,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:46:08,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:08,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175450249] [2023-11-26 11:46:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175450249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:08,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:08,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882506927] [2023-11-26 11:46:08,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:08,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:08,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2023-11-26 11:46:08,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:08,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:08,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2023-11-26 11:46:08,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:46:13,375 INFO L124 PetriNetUnfolderBase]: 35980/47747 cut-off events. [2023-11-26 11:46:13,375 INFO L125 PetriNetUnfolderBase]: For 19696/22588 co-relation queries the response was YES. [2023-11-26 11:46:13,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116829 conditions, 47747 events. 35980/47747 cut-off events. For 19696/22588 co-relation queries the response was YES. Maximal size of possible extension queue 1744. Compared 297779 event pairs, 30069 based on Foata normal form. 2892/50098 useless extension candidates. Maximal degree in co-relation 33991. Up to 45313 conditions per place. [2023-11-26 11:46:14,048 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 43 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-26 11:46:14,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 252 flow [2023-11-26 11:46:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:46:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2023-11-26 11:46:14,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2023-11-26 11:46:14,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 96 transitions. [2023-11-26 11:46:14,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 96 transitions. [2023-11-26 11:46:14,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:46:14,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 96 transitions. [2023-11-26 11:46:14,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.0) internal successors, (96), 3 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 11:46:14,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:14,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:14,053 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 160 flow. Second operand 3 states and 96 transitions. [2023-11-26 11:46:14,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 252 flow [2023-11-26 11:46:14,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:46:14,111 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 168 flow [2023-11-26 11:46:14,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2023-11-26 11:46:14,112 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2023-11-26 11:46:14,113 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 168 flow [2023-11-26 11:46:14,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:14,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:46:14,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:14,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:46:14,114 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 3 more)] === [2023-11-26 11:46:14,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1850487845, now seen corresponding path program 1 times [2023-11-26 11:46:14,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:14,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271250887] [2023-11-26 11:46:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:14,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:46:15,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:15,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271250887] [2023-11-26 11:46:15,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271250887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:15,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822013228] [2023-11-26 11:46:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:15,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:15,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a70f7fda-a1de-4e05-aae2-27526c1f8be9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:46:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:15,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-26 11:46:15,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:15,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:46:15,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-26 11:46:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:16,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:46:16,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822013228] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:16,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:46:16,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 23 [2023-11-26 11:46:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020480381] [2023-11-26 11:46:16,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:16,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:46:16,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:46:16,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:46:16,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2023-11-26 11:46:16,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 168 flow. Second operand has 23 states, 23 states have (on average 20.434782608695652) internal successors, (470), 23 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:16,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:46:16,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2023-11-26 11:46:16,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand