./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/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_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/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_a3420ffe-364d-4089-bee9-d0c6cc616b58/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 f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:15,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:15,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:43:15,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:15,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:15,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:15,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:15,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:15,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:15,472 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:15,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:15,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:15,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:15,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:15,477 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:15,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:15,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:15,478 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:15,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:15,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:15,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:15,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:15,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:15,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:15,483 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:15,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:15,484 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:15,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:15,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:15,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:15,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:15,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:15,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:15,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:15,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:15,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:15,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:15,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:15,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:15,490 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:15,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:15,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:15,491 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_a3420ffe-364d-4089-bee9-d0c6cc616b58/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f69f777f524a62a415fc7cacc9442c44e05883e29c36815b4e0d58199826b331 [2023-11-26 10:43:15,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:15,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:15,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:15,882 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:15,883 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:15,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix046.opt.i [2023-11-26 10:43:19,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:19,935 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:19,936 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/sv-benchmarks/c/pthread-wmm/mix046.opt.i [2023-11-26 10:43:19,955 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/data/35d7f6bd6/6772be47cca24ecdb806e97d488a26ed/FLAG4908b66c9 [2023-11-26 10:43:19,973 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/data/35d7f6bd6/6772be47cca24ecdb806e97d488a26ed [2023-11-26 10:43:19,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:19,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:19,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:19,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:19,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:19,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:19,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177dea2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:19, skipping insertion in model container [2023-11-26 10:43:19,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:19" (1/1) ... [2023-11-26 10:43:20,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:20,304 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_a3420ffe-364d-4089-bee9-d0c6cc616b58/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2023-11-26 10:43:20,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:20,703 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:20,721 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_a3420ffe-364d-4089-bee9-d0c6cc616b58/sv-benchmarks/c/pthread-wmm/mix046.opt.i[944,957] [2023-11-26 10:43:20,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:20,891 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:20,891 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:20,900 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:20,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20 WrapperNode [2023-11-26 10:43:20,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:20,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:20,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:20,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:20,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:20,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,013 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2023-11-26 10:43:21,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:21,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:21,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:21,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:21,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,087 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 10:43:21,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:21,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:21,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:21,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:21,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (1/1) ... [2023-11-26 10:43:21,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:21,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:21,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:21,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3420ffe-364d-4089-bee9-d0c6cc616b58/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:21,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:43:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:43:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:43:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:43:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:43:21,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:43:21,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:21,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:43:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:43:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 10:43:21,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 10:43:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 10:43:21,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 10:43:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 10:43:21,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 10:43:21,238 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 10:43:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 10:43:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:43:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:43:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:43:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:43:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:43:21,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:21,246 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 10:43:21,507 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:21,511 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:22,054 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:22,419 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:22,419 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:43:22,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:22 BoogieIcfgContainer [2023-11-26 10:43:22,420 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:22,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:22,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:22,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:22,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:19" (1/3) ... [2023-11-26 10:43:22,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf60e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:22, skipping insertion in model container [2023-11-26 10:43:22,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:20" (2/3) ... [2023-11-26 10:43:22,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf60e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:22, skipping insertion in model container [2023-11-26 10:43:22,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:22" (3/3) ... [2023-11-26 10:43:22,432 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.opt.i [2023-11-26 10:43:22,444 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:43:22,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:22,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:43:22,457 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:43:22,535 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:43:22,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 10:43:22,656 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-26 10:43:22,656 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:22,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-26 10:43:22,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-26 10:43:22,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-26 10:43:22,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:22,710 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;@6b83c5c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:22,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 10:43:22,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:22,735 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-26 10:43:22,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:22,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:22,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:22,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:22,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1400924090, now seen corresponding path program 1 times [2023-11-26 10:43:22,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:22,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946992174] [2023-11-26 10:43:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:22,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:23,501 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 10:43:23,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946992174] [2023-11-26 10:43:23,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946992174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:23,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:23,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:43:23,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862578546] [2023-11-26 10:43:23,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:23,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:23,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:23,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:23,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:23,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2023-11-26 10:43:23,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:23,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:23,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2023-11-26 10:43:23,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:24,099 INFO L124 PetriNetUnfolderBase]: 815/1615 cut-off events. [2023-11-26 10:43:24,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:24,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 1615 events. 815/1615 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11888 event pairs, 179 based on Foata normal form. 48/1608 useless extension candidates. Maximal degree in co-relation 2835. Up to 889 conditions per place. [2023-11-26 10:43:24,128 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 27 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-26 10:43:24,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 182 flow [2023-11-26 10:43:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:43:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-26 10:43:24,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2023-11-26 10:43:24,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-26 10:43:24,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-26 10:43:24,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:24,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-26 10:43:24,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 10:43:24,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,169 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 115 transitions. [2023-11-26 10:43:24,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 182 flow [2023-11-26 10:43:24,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:43:24,184 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-26 10:43:24,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-11-26 10:43:24,192 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-26 10:43:24,192 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-26 10:43:24,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:24,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:24,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:24,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:43:24,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:24,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:24,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2128218480, now seen corresponding path program 1 times [2023-11-26 10:43:24,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:24,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120401930] [2023-11-26 10:43:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:24,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:24,745 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 10:43:24,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:24,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120401930] [2023-11-26 10:43:24,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120401930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:24,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:24,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756497284] [2023-11-26 10:43:24,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:24,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:24,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:24,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:24,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2023-11-26 10:43:24,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 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 10:43:24,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:24,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2023-11-26 10:43:24,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:25,465 INFO L124 PetriNetUnfolderBase]: 1327/2211 cut-off events. [2023-11-26 10:43:25,465 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-26 10:43:25,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4265 conditions, 2211 events. 1327/2211 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 15837 event pairs, 307 based on Foata normal form. 0/2120 useless extension candidates. Maximal degree in co-relation 4255. Up to 853 conditions per place. [2023-11-26 10:43:25,522 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 27 selfloop transitions, 2 changer transitions 36/85 dead transitions. [2023-11-26 10:43:25,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 316 flow [2023-11-26 10:43:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:25,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:43:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2023-11-26 10:43:25,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6475 [2023-11-26 10:43:25,527 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 259 transitions. [2023-11-26 10:43:25,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 259 transitions. [2023-11-26 10:43:25,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:25,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 259 transitions. [2023-11-26 10:43:25,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 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 10:43:25,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:25,533 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:25,533 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 259 transitions. [2023-11-26 10:43:25,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 316 flow [2023-11-26 10:43:25,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:25,538 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 108 flow [2023-11-26 10:43:25,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=108, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2023-11-26 10:43:25,540 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-11-26 10:43:25,540 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 108 flow [2023-11-26 10:43:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 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 10:43:25,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:25,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:25,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:43:25,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:25,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1482202739, now seen corresponding path program 1 times [2023-11-26 10:43:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:25,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124636285] [2023-11-26 10:43:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:25,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:26,288 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 10:43:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:26,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124636285] [2023-11-26 10:43:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124636285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:26,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:26,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:43:26,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60561719] [2023-11-26 10:43:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:26,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:26,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:26,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:26,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:26,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:43:26,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 10:43:26,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:26,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:43:26,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:28,691 INFO L124 PetriNetUnfolderBase]: 6763/11102 cut-off events. [2023-11-26 10:43:28,691 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2023-11-26 10:43:28,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22707 conditions, 11102 events. 6763/11102 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 84143 event pairs, 337 based on Foata normal form. 238/11291 useless extension candidates. Maximal degree in co-relation 22692. Up to 5575 conditions per place. [2023-11-26 10:43:28,866 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 50 selfloop transitions, 12 changer transitions 57/135 dead transitions. [2023-11-26 10:43:28,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 135 transitions, 570 flow [2023-11-26 10:43:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:43:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:43:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2023-11-26 10:43:28,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644 [2023-11-26 10:43:28,871 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 322 transitions. [2023-11-26 10:43:28,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 322 transitions. [2023-11-26 10:43:28,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:28,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 322 transitions. [2023-11-26 10:43:28,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.2) internal successors, (322), 10 states have internal predecessors, (322), 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 10:43:28,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:28,878 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:28,878 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 108 flow. Second operand 10 states and 322 transitions. [2023-11-26 10:43:28,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 135 transitions, 570 flow [2023-11-26 10:43:29,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 135 transitions, 534 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-26 10:43:29,033 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 202 flow [2023-11-26 10:43:29,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=202, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-11-26 10:43:29,035 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-11-26 10:43:29,035 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 202 flow [2023-11-26 10:43:29,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 10:43:29,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:29,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:29,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:43:29,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:29,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:29,038 INFO L85 PathProgramCache]: Analyzing trace with hash 460112884, now seen corresponding path program 1 times [2023-11-26 10:43:29,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:29,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163979714] [2023-11-26 10:43:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:29,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:30,199 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 10:43:30,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:30,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163979714] [2023-11-26 10:43:30,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163979714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:30,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:30,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:30,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2792878] [2023-11-26 10:43:30,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:30,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:30,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:30,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:30,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2023-11-26 10:43:30,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:30,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:30,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2023-11-26 10:43:30,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:32,483 INFO L124 PetriNetUnfolderBase]: 5867/10354 cut-off events. [2023-11-26 10:43:32,484 INFO L125 PetriNetUnfolderBase]: For 9218/9448 co-relation queries the response was YES. [2023-11-26 10:43:32,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28795 conditions, 10354 events. 5867/10354 cut-off events. For 9218/9448 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 86686 event pairs, 2161 based on Foata normal form. 248/10084 useless extension candidates. Maximal degree in co-relation 28776. Up to 5306 conditions per place. [2023-11-26 10:43:32,609 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 47 selfloop transitions, 14 changer transitions 16/103 dead transitions. [2023-11-26 10:43:32,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 103 transitions, 556 flow [2023-11-26 10:43:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:43:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2023-11-26 10:43:32,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6425 [2023-11-26 10:43:32,612 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 257 transitions. [2023-11-26 10:43:32,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 257 transitions. [2023-11-26 10:43:32,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:32,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 257 transitions. [2023-11-26 10:43:32,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.125) internal successors, (257), 8 states have internal predecessors, (257), 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 10:43:32,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:32,617 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:32,617 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 202 flow. Second operand 8 states and 257 transitions. [2023-11-26 10:43:32,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 103 transitions, 556 flow [2023-11-26 10:43:32,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 540 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-26 10:43:32,786 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 334 flow [2023-11-26 10:43:32,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-11-26 10:43:32,789 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-11-26 10:43:32,790 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 334 flow [2023-11-26 10:43:32,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:32,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:32,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:32,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:43:32,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:32,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1405478284, now seen corresponding path program 2 times [2023-11-26 10:43:32,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164163199] [2023-11-26 10:43:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:34,014 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 10:43:34,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:34,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164163199] [2023-11-26 10:43:34,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164163199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:34,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:34,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:34,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565347456] [2023-11-26 10:43:34,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:34,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:34,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:34,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:34,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2023-11-26 10:43:34,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 334 flow. Second operand has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:34,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:34,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2023-11-26 10:43:34,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:36,174 INFO L124 PetriNetUnfolderBase]: 5745/10370 cut-off events. [2023-11-26 10:43:36,175 INFO L125 PetriNetUnfolderBase]: For 12981/13404 co-relation queries the response was YES. [2023-11-26 10:43:36,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30969 conditions, 10370 events. 5745/10370 cut-off events. For 12981/13404 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 88770 event pairs, 2166 based on Foata normal form. 268/10126 useless extension candidates. Maximal degree in co-relation 30947. Up to 4873 conditions per place. [2023-11-26 10:43:36,290 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 49 selfloop transitions, 23 changer transitions 16/114 dead transitions. [2023-11-26 10:43:36,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 759 flow [2023-11-26 10:43:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 10:43:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2023-11-26 10:43:36,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6425 [2023-11-26 10:43:36,293 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 257 transitions. [2023-11-26 10:43:36,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 257 transitions. [2023-11-26 10:43:36,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:36,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 257 transitions. [2023-11-26 10:43:36,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.125) internal successors, (257), 8 states have internal predecessors, (257), 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 10:43:36,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,297 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,297 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 334 flow. Second operand 8 states and 257 transitions. [2023-11-26 10:43:36,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 759 flow [2023-11-26 10:43:36,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 114 transitions, 759 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:36,342 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 519 flow [2023-11-26 10:43:36,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2023-11-26 10:43:36,345 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-11-26 10:43:36,345 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 519 flow [2023-11-26 10:43:36,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:36,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:36,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:43:36,346 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:36,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash 491338986, now seen corresponding path program 1 times [2023-11-26 10:43:36,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:36,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860483005] [2023-11-26 10:43:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:36,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:36,948 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 10:43:36,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:36,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860483005] [2023-11-26 10:43:36,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860483005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:36,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:36,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:43:36,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579997633] [2023-11-26 10:43:36,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:36,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:43:36,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:36,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:43:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:36,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2023-11-26 10:43:36,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 519 flow. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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 10:43:36,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:36,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2023-11-26 10:43:36,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:39,762 INFO L124 PetriNetUnfolderBase]: 6923/12252 cut-off events. [2023-11-26 10:43:39,763 INFO L125 PetriNetUnfolderBase]: For 28722/29651 co-relation queries the response was YES. [2023-11-26 10:43:39,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40516 conditions, 12252 events. 6923/12252 cut-off events. For 28722/29651 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 106124 event pairs, 1895 based on Foata normal form. 296/11848 useless extension candidates. Maximal degree in co-relation 40487. Up to 4470 conditions per place. [2023-11-26 10:43:39,922 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 63 selfloop transitions, 39 changer transitions 24/152 dead transitions. [2023-11-26 10:43:39,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 152 transitions, 1228 flow [2023-11-26 10:43:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:43:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:43:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2023-11-26 10:43:39,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646 [2023-11-26 10:43:39,926 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 323 transitions. [2023-11-26 10:43:39,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 323 transitions. [2023-11-26 10:43:39,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:39,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 323 transitions. [2023-11-26 10:43:39,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 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 10:43:39,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,932 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:39,932 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 519 flow. Second operand 10 states and 323 transitions. [2023-11-26 10:43:39,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 152 transitions, 1228 flow [2023-11-26 10:43:40,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 1178 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:40,074 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 808 flow [2023-11-26 10:43:40,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=808, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2023-11-26 10:43:40,077 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 40 predicate places. [2023-11-26 10:43:40,078 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 808 flow [2023-11-26 10:43:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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 10:43:40,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:40,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:40,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:43:40,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:40,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1995617137, now seen corresponding path program 1 times [2023-11-26 10:43:40,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862850112] [2023-11-26 10:43:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,063 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 10:43:41,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862850112] [2023-11-26 10:43:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862850112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:41,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:41,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:43:41,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968678296] [2023-11-26 10:43:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:41,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:43:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:43:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:41,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2023-11-26 10:43:41,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 808 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 10:43:41,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:41,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2023-11-26 10:43:41,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:43,807 INFO L124 PetriNetUnfolderBase]: 7089/12655 cut-off events. [2023-11-26 10:43:43,807 INFO L125 PetriNetUnfolderBase]: For 41426/42620 co-relation queries the response was YES. [2023-11-26 10:43:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45765 conditions, 12655 events. 7089/12655 cut-off events. For 41426/42620 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 111598 event pairs, 2131 based on Foata normal form. 228/12091 useless extension candidates. Maximal degree in co-relation 45728. Up to 6052 conditions per place. [2023-11-26 10:43:43,989 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 73 selfloop transitions, 21 changer transitions 21/141 dead transitions. [2023-11-26 10:43:43,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 141 transitions, 1313 flow [2023-11-26 10:43:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:43:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:43:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 284 transitions. [2023-11-26 10:43:43,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6311111111111111 [2023-11-26 10:43:43,992 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 284 transitions. [2023-11-26 10:43:43,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 284 transitions. [2023-11-26 10:43:43,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:43,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 284 transitions. [2023-11-26 10:43:43,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.555555555555557) internal successors, (284), 9 states have internal predecessors, (284), 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 10:43:43,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,000 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:44,000 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 808 flow. Second operand 9 states and 284 transitions. [2023-11-26 10:43:44,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 141 transitions, 1313 flow [2023-11-26 10:43:44,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 1184 flow, removed 43 selfloop flow, removed 10 redundant places. [2023-11-26 10:43:44,482 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 835 flow [2023-11-26 10:43:44,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=835, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2023-11-26 10:43:44,483 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2023-11-26 10:43:44,484 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 835 flow [2023-11-26 10:43:44,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 10:43:44,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:44,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:43:44,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:44,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1077164783, now seen corresponding path program 2 times [2023-11-26 10:43:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669260453] [2023-11-26 10:43:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:45,451 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 10:43:45,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:45,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669260453] [2023-11-26 10:43:45,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669260453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:45,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:45,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:43:45,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858187423] [2023-11-26 10:43:45,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:45,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:43:45,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:45,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:43:45,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:45,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2023-11-26 10:43:45,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 835 flow. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 10:43:45,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:45,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2023-11-26 10:43:45,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:47,665 INFO L124 PetriNetUnfolderBase]: 6658/11993 cut-off events. [2023-11-26 10:43:47,665 INFO L125 PetriNetUnfolderBase]: For 37005/38166 co-relation queries the response was YES. [2023-11-26 10:43:47,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42997 conditions, 11993 events. 6658/11993 cut-off events. For 37005/38166 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 105532 event pairs, 1555 based on Foata normal form. 228/11555 useless extension candidates. Maximal degree in co-relation 42960. Up to 4350 conditions per place. [2023-11-26 10:43:47,807 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 67 selfloop transitions, 35 changer transitions 11/139 dead transitions. [2023-11-26 10:43:47,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 139 transitions, 1271 flow [2023-11-26 10:43:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:43:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:43:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 283 transitions. [2023-11-26 10:43:47,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6288888888888889 [2023-11-26 10:43:47,810 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 283 transitions. [2023-11-26 10:43:47,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 283 transitions. [2023-11-26 10:43:47,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:47,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 283 transitions. [2023-11-26 10:43:47,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.444444444444443) internal successors, (283), 9 states have internal predecessors, (283), 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 10:43:47,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,814 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,814 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 835 flow. Second operand 9 states and 283 transitions. [2023-11-26 10:43:47,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 139 transitions, 1271 flow [2023-11-26 10:43:47,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 1207 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-26 10:43:47,997 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 905 flow [2023-11-26 10:43:47,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=905, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2023-11-26 10:43:48,000 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 47 predicate places. [2023-11-26 10:43:48,000 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 905 flow [2023-11-26 10:43:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 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 10:43:48,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:48,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:43:48,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:48,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1521195209, now seen corresponding path program 1 times [2023-11-26 10:43:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:48,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077277287] [2023-11-26 10:43:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:48,344 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 10:43:48,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:48,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077277287] [2023-11-26 10:43:48,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077277287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:48,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:48,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:48,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053749483] [2023-11-26 10:43:48,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:48,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:48,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:48,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:48,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 10:43:48,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 905 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 10:43:48,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:48,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 10:43:48,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:53,355 INFO L124 PetriNetUnfolderBase]: 21165/31881 cut-off events. [2023-11-26 10:43:53,355 INFO L125 PetriNetUnfolderBase]: For 142632/150366 co-relation queries the response was YES. [2023-11-26 10:43:53,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117691 conditions, 31881 events. 21165/31881 cut-off events. For 142632/150366 co-relation queries the response was YES. Maximal size of possible extension queue 2031. Compared 245979 event pairs, 4257 based on Foata normal form. 2167/32280 useless extension candidates. Maximal degree in co-relation 117651. Up to 16733 conditions per place. [2023-11-26 10:43:53,691 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 133 selfloop transitions, 6 changer transitions 0/166 dead transitions. [2023-11-26 10:43:53,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 166 transitions, 1889 flow [2023-11-26 10:43:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-26 10:43:53,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2023-11-26 10:43:53,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-26 10:43:53,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-26 10:43:53,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:53,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-26 10:43:53,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 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 10:43:53,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:53,695 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:53,695 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 905 flow. Second operand 4 states and 141 transitions. [2023-11-26 10:43:53,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 166 transitions, 1889 flow [2023-11-26 10:43:54,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 166 transitions, 1712 flow, removed 24 selfloop flow, removed 13 redundant places. [2023-11-26 10:43:54,589 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 842 flow [2023-11-26 10:43:54,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=842, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2023-11-26 10:43:54,590 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 39 predicate places. [2023-11-26 10:43:54,590 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 842 flow [2023-11-26 10:43:54,591 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 10:43:54,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:54,591 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] [2023-11-26 10:43:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:43:54,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:54,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash 408226816, now seen corresponding path program 1 times [2023-11-26 10:43:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315644380] [2023-11-26 10:43:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:54,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:54,785 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 10:43:54,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:54,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315644380] [2023-11-26 10:43:54,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315644380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:54,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:54,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:54,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076917571] [2023-11-26 10:43:54,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:54,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:54,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:54,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:54,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-26 10:43:54,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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 10:43:54,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:54,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-26 10:43:54,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:58,846 INFO L124 PetriNetUnfolderBase]: 18010/27327 cut-off events. [2023-11-26 10:43:58,847 INFO L125 PetriNetUnfolderBase]: For 104658/115938 co-relation queries the response was YES. [2023-11-26 10:43:58,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101580 conditions, 27327 events. 18010/27327 cut-off events. For 104658/115938 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 206127 event pairs, 2134 based on Foata normal form. 2124/27928 useless extension candidates. Maximal degree in co-relation 101546. Up to 11282 conditions per place. [2023-11-26 10:43:59,133 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 163 selfloop transitions, 10 changer transitions 0/200 dead transitions. [2023-11-26 10:43:59,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 200 transitions, 2117 flow [2023-11-26 10:43:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:43:59,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2023-11-26 10:43:59,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2023-11-26 10:43:59,136 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2023-11-26 10:43:59,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2023-11-26 10:43:59,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:59,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2023-11-26 10:43:59,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 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 10:43:59,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:59,138 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:59,139 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 842 flow. Second operand 5 states and 180 transitions. [2023-11-26 10:43:59,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 200 transitions, 2117 flow [2023-11-26 10:43:59,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 200 transitions, 2102 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-26 10:43:59,278 INFO L231 Difference]: Finished difference. Result has 102 places, 104 transitions, 855 flow [2023-11-26 10:43:59,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=855, PETRI_PLACES=102, PETRI_TRANSITIONS=104} [2023-11-26 10:43:59,279 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-11-26 10:43:59,279 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 104 transitions, 855 flow [2023-11-26 10:43:59,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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 10:43:59,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:59,280 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] [2023-11-26 10:43:59,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:43:59,280 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-26 10:43:59,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:59,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1524491481, now seen corresponding path program 1 times [2023-11-26 10:43:59,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:59,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823939946] [2023-11-26 10:43:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:59,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:59,956 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 10:43:59,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:59,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823939946] [2023-11-26 10:43:59,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823939946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:59,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:59,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:59,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561507727] [2023-11-26 10:43:59,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:59,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:59,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:59,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:59,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:59,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-26 10:43:59,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 855 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 10:43:59,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:59,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-26 10:43:59,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand