./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya --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 aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:01:44,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:01:44,656 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:01:44,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:01:44,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:01:44,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:01:44,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:01:44,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:01:44,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:01:44,686 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:01:44,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:01:44,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:01:44,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:01:44,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:01:44,689 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:01:44,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:01:44,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:01:44,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:01:44,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:01:44,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:01:44,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:01:44,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:01:44,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:01:44,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:01:44,694 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:01:44,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:01:44,695 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:01:44,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:01:44,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:01:44,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:01:44,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:01:44,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:01:44,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:01:44,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:01:44,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:01:44,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:01:44,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:01:44,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:01:44,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:01:44,698 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:01:44,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:01:44,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:01:44,699 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_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2023-11-29 01:01:44,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:01:44,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:01:44,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:01:44,958 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:01:44,959 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:01:44,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-29 01:01:47,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:01:47,823 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:01:47,824 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2023-11-29 01:01:47,832 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/data/959a51dd3/ecc6b9b2bafd45c3b7e06084f55f60c5/FLAGc9f57c7a8 [2023-11-29 01:01:47,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/data/959a51dd3/ecc6b9b2bafd45c3b7e06084f55f60c5 [2023-11-29 01:01:47,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:01:47,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:01:47,851 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:01:47,851 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:01:47,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:01:47,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:47" (1/1) ... [2023-11-29 01:01:47,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e8a0e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:47, skipping insertion in model container [2023-11-29 01:01:47,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:47" (1/1) ... [2023-11-29 01:01:47,890 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:01:48,107 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_e9036110-c473-4962-b93d-91d3af79bc0d/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2023-11-29 01:01:48,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:01:48,131 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:01:48,162 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_e9036110-c473-4962-b93d-91d3af79bc0d/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2023-11-29 01:01:48,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:01:48,174 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:01:48,174 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:01:48,182 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:01:48,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48 WrapperNode [2023-11-29 01:01:48,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:01:48,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:01:48,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:01:48,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:01:48,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,238 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 409 [2023-11-29 01:01:48,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:01:48,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:01:48,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:01:48,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:01:48,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,278 INFO L175 MemorySlicer]: Split 19 memory accesses to 8 slices as follows [2, 2, 2, 2, 2, 5, 2, 2]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0, 0, 0, 0, 0]. The 7 writes are split as follows [1, 0, 1, 1, 1, 1, 1, 1]. [2023-11-29 01:01:48,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:01:48,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:01:48,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:01:48,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:01:48,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (1/1) ... [2023-11-29 01:01:48,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:01:48,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:48,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:01:48,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:01:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:01:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:01:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:01:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:01:48,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:01:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:01:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:01:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 01:01:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 01:01:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 01:01:48,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:01:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:01:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:01:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:01:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:01:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 01:01:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 01:01:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 01:01:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:01:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:01:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:01:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:01:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 01:01:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 01:01:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 01:01:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 01:01:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:01:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:01:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:01:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:01:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:01:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:01:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:01:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 01:01:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-29 01:01:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-29 01:01:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-29 01:01:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-29 01:01:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:01:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:01:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:01:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:01:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:01:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:01:48,396 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:01:48,547 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:01:48,549 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:01:49,054 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:01:49,523 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:01:49,523 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 01:01:49,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:49 BoogieIcfgContainer [2023-11-29 01:01:49,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:01:49,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:01:49,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:01:49,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:01:49,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:01:47" (1/3) ... [2023-11-29 01:01:49,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6da856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:49, skipping insertion in model container [2023-11-29 01:01:49,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:48" (2/3) ... [2023-11-29 01:01:49,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6da856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:49, skipping insertion in model container [2023-11-29 01:01:49,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:49" (3/3) ... [2023-11-29 01:01:49,533 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-11-29 01:01:49,543 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:01:49,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:01:49,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:01:49,554 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:01:49,672 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-29 01:01:49,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 244 flow [2023-11-29 01:01:49,772 INFO L124 PetriNetUnfolderBase]: 13/71 cut-off events. [2023-11-29 01:01:49,772 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 01:01:49,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 71 events. 13/71 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2023-11-29 01:01:49,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 244 flow [2023-11-29 01:01:49,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 70 transitions, 188 flow [2023-11-29 01:01:49,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:01:49,802 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;@48c81696, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:01:49,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 01:01:49,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:01:49,837 INFO L124 PetriNetUnfolderBase]: 13/69 cut-off events. [2023-11-29 01:01:49,837 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 01:01:49,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:01:49,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:49,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 01:01:49,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:49,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1897803774, now seen corresponding path program 1 times [2023-11-29 01:01:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:49,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313034342] [2023-11-29 01:01:49,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:49,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:50,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313034342] [2023-11-29 01:01:50,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313034342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:50,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:50,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:01:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41159996] [2023-11-29 01:01:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:50,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:01:50,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:01:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:01:50,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 01:01:50,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:50,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:01:50,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 01:01:50,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:00,891 INFO L124 PetriNetUnfolderBase]: 98509/124778 cut-off events. [2023-11-29 01:02:00,891 INFO L125 PetriNetUnfolderBase]: For 9775/9775 co-relation queries the response was YES. [2023-11-29 01:02:01,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255910 conditions, 124778 events. 98509/124778 cut-off events. For 9775/9775 co-relation queries the response was YES. Maximal size of possible extension queue 4802. Compared 719254 event pairs, 72876 based on Foata normal form. 22461/120914 useless extension candidates. Maximal degree in co-relation 254244. Up to 119424 conditions per place. [2023-11-29 01:02:01,896 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 57 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-11-29 01:02:01,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 294 flow [2023-11-29 01:02:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:02:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 01:02:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2023-11-29 01:02:01,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2023-11-29 01:02:01,911 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 91 transitions. [2023-11-29 01:02:01,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 91 transitions. [2023-11-29 01:02:01,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:01,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 91 transitions. [2023-11-29 01:02:01,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:01,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:01,923 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:01,925 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 188 flow. Second operand 2 states and 91 transitions. [2023-11-29 01:02:01,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 294 flow [2023-11-29 01:02:02,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 262 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-29 01:02:02,197 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 148 flow [2023-11-29 01:02:02,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2023-11-29 01:02:02,203 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -11 predicate places. [2023-11-29 01:02:02,203 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 148 flow [2023-11-29 01:02:02,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:02,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:02,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:02,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:02:02,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 01:02:02,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash -931008466, now seen corresponding path program 1 times [2023-11-29 01:02:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:02,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122249230] [2023-11-29 01:02:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:02,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:02,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122249230] [2023-11-29 01:02:02,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122249230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:02,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:02,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:02:02,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90954641] [2023-11-29 01:02:02,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:02,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:02:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:02,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:02:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:02:02,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 01:02:02,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:02,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:02,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 01:02:02,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:16,130 INFO L124 PetriNetUnfolderBase]: 139941/178630 cut-off events. [2023-11-29 01:02:16,130 INFO L125 PetriNetUnfolderBase]: For 3195/3195 co-relation queries the response was YES. [2023-11-29 01:02:16,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354449 conditions, 178630 events. 139941/178630 cut-off events. For 3195/3195 co-relation queries the response was YES. Maximal size of possible extension queue 6905. Compared 1101931 event pairs, 107108 based on Foata normal form. 4214/144976 useless extension candidates. Maximal degree in co-relation 354446. Up to 119424 conditions per place. [2023-11-29 01:02:16,875 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 56 selfloop transitions, 2 changer transitions 44/111 dead transitions. [2023-11-29 01:02:16,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 456 flow [2023-11-29 01:02:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:02:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:02:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2023-11-29 01:02:16,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2023-11-29 01:02:16,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 165 transitions. [2023-11-29 01:02:16,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 165 transitions. [2023-11-29 01:02:16,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:16,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 165 transitions. [2023-11-29 01:02:16,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,881 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 148 flow. Second operand 4 states and 165 transitions. [2023-11-29 01:02:16,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 456 flow [2023-11-29 01:02:16,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:02:16,884 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 166 flow [2023-11-29 01:02:16,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2023-11-29 01:02:16,885 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2023-11-29 01:02:16,885 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 166 flow [2023-11-29 01:02:16,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:16,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:16,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:02:16,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 01:02:16,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash -404799454, now seen corresponding path program 1 times [2023-11-29 01:02:16,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:16,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681993118] [2023-11-29 01:02:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:16,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:17,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:17,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681993118] [2023-11-29 01:02:17,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681993118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:17,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:02:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101965749] [2023-11-29 01:02:17,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:17,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:02:17,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:17,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:02:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:02:17,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 01:02:17,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:17,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:17,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 01:02:17,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:34,966 INFO L124 PetriNetUnfolderBase]: 213492/272269 cut-off events. [2023-11-29 01:02:34,966 INFO L125 PetriNetUnfolderBase]: For 15360/15360 co-relation queries the response was YES. [2023-11-29 01:02:35,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553963 conditions, 272269 events. 213492/272269 cut-off events. For 15360/15360 co-relation queries the response was YES. Maximal size of possible extension queue 9865. Compared 1743991 event pairs, 40495 based on Foata normal form. 1/222085 useless extension candidates. Maximal degree in co-relation 553957. Up to 104601 conditions per place. [2023-11-29 01:02:36,452 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 172 selfloop transitions, 10 changer transitions 10/201 dead transitions. [2023-11-29 01:02:36,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 201 transitions, 867 flow [2023-11-29 01:02:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:02:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:02:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2023-11-29 01:02:36,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2023-11-29 01:02:36,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 282 transitions. [2023-11-29 01:02:36,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 282 transitions. [2023-11-29 01:02:36,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:36,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 282 transitions. [2023-11-29 01:02:36,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:36,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:36,460 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:36,460 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 166 flow. Second operand 6 states and 282 transitions. [2023-11-29 01:02:36,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 201 transitions, 867 flow [2023-11-29 01:02:37,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 201 transitions, 857 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-29 01:02:37,061 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 221 flow [2023-11-29 01:02:37,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2023-11-29 01:02:37,062 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2023-11-29 01:02:37,063 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 221 flow [2023-11-29 01:02:37,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:37,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:37,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:37,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:02:37,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 01:02:37,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1529935678, now seen corresponding path program 2 times [2023-11-29 01:02:37,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827466112] [2023-11-29 01:02:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:02:37,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:37,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827466112] [2023-11-29 01:02:37,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827466112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:37,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:37,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:02:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776210807] [2023-11-29 01:02:37,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:37,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:02:37,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:02:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:02:37,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 01:02:37,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:37,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:37,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 01:02:37,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:02:55,420 INFO L124 PetriNetUnfolderBase]: 213480/272138 cut-off events. [2023-11-29 01:02:55,421 INFO L125 PetriNetUnfolderBase]: For 40348/40348 co-relation queries the response was YES. [2023-11-29 01:02:56,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594717 conditions, 272138 events. 213480/272138 cut-off events. For 40348/40348 co-relation queries the response was YES. Maximal size of possible extension queue 9866. Compared 1740652 event pairs, 41081 based on Foata normal form. 1/221955 useless extension candidates. Maximal degree in co-relation 594708. Up to 104601 conditions per place. [2023-11-29 01:02:57,248 INFO L140 encePairwiseOnDemand]: 84/93 looper letters, 167 selfloop transitions, 12 changer transitions 10/198 dead transitions. [2023-11-29 01:02:57,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 198 transitions, 918 flow [2023-11-29 01:02:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:02:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:02:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 277 transitions. [2023-11-29 01:02:57,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496415770609319 [2023-11-29 01:02:57,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 277 transitions. [2023-11-29 01:02:57,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 277 transitions. [2023-11-29 01:02:57,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:02:57,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 277 transitions. [2023-11-29 01:02:57,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 46.166666666666664) internal successors, (277), 6 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:57,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:57,256 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:57,256 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 221 flow. Second operand 6 states and 277 transitions. [2023-11-29 01:02:57,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 198 transitions, 918 flow [2023-11-29 01:02:57,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 198 transitions, 914 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 01:02:57,557 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 274 flow [2023-11-29 01:02:57,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-11-29 01:02:57,558 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-11-29 01:02:57,558 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 274 flow [2023-11-29 01:02:57,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:57,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:02:57,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:57,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:02:57,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 01:02:57,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:57,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1091155768, now seen corresponding path program 1 times [2023-11-29 01:02:57,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:57,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703001626] [2023-11-29 01:02:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:57,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:57,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:57,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703001626] [2023-11-29 01:02:57,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703001626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:57,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260386921] [2023-11-29 01:02:57,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:57,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:57,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:57,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:57,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:02:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:58,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:02:58,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:58,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:02:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:58,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260386921] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:02:58,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:02:58,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 01:02:58,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359651667] [2023-11-29 01:02:58,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:02:58,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:02:58,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:58,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:02:58,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:02:58,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 01:02:58,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 274 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:58,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:02:58,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 01:02:58,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:03:26,653 INFO L124 PetriNetUnfolderBase]: 308403/391900 cut-off events. [2023-11-29 01:03:26,653 INFO L125 PetriNetUnfolderBase]: For 82131/82131 co-relation queries the response was YES. [2023-11-29 01:03:27,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877449 conditions, 391900 events. 308403/391900 cut-off events. For 82131/82131 co-relation queries the response was YES. Maximal size of possible extension queue 14404. Compared 2593169 event pairs, 240706 based on Foata normal form. 9080/327666 useless extension candidates. Maximal degree in co-relation 877437. Up to 253415 conditions per place. [2023-11-29 01:03:28,959 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 149 selfloop transitions, 5 changer transitions 4/167 dead transitions. [2023-11-29 01:03:28,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 167 transitions, 887 flow [2023-11-29 01:03:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:03:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:03:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2023-11-29 01:03:29,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2023-11-29 01:03:29,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 228 transitions. [2023-11-29 01:03:29,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 228 transitions. [2023-11-29 01:03:29,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:03:29,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 228 transitions. [2023-11-29 01:03:29,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:29,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:29,123 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:29,123 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 274 flow. Second operand 6 states and 228 transitions. [2023-11-29 01:03:29,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 167 transitions, 887 flow [2023-11-29 01:03:31,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 167 transitions, 859 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 01:03:31,162 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 301 flow [2023-11-29 01:03:31,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2023-11-29 01:03:31,163 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2023-11-29 01:03:31,163 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 301 flow [2023-11-29 01:03:31,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:31,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:03:31,164 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:31,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:03:31,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:31,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-29 01:03:31,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash -103187455, now seen corresponding path program 1 times [2023-11-29 01:03:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674265157] [2023-11-29 01:03:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:31,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:31,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674265157] [2023-11-29 01:03:31,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674265157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:31,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848176087] [2023-11-29 01:03:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:31,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:31,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:31,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:31,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9036110-c473-4962-b93d-91d3af79bc0d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:03:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:31,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:03:31,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:31,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:03:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:32,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848176087] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:03:32,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:03:32,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 01:03:32,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745994596] [2023-11-29 01:03:32,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:03:32,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:03:32,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:03:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:03:32,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 93 [2023-11-29 01:03:32,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 301 flow. Second operand has 11 states, 11 states have (on average 23.363636363636363) internal successors, (257), 11 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) [2023-11-29 01:03:32,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:03:32,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 93 [2023-11-29 01:03:32,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand