./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:49,860 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:49,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:58:49,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:49,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:50,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:50,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:50,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:50,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:50,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:50,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:50,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:50,035 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:50,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:50,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:58:50,038 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:50,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:50,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:50,039 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:50,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:58:50,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:50,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:58:50,041 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:58:50,042 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:58:50,042 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:50,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:50,043 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:50,044 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:50,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:50,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:50,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:50,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:50,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:50,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:58:50,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:50,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:50,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:50,047 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:58:50,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:50,047 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:50,048 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:50,048 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_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 [2023-11-19 07:58:50,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:50,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:50,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:50,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:50,397 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:50,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2023-11-19 07:58:53,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:53,966 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:53,969 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2023-11-19 07:58:54,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/data/a691a65c5/79dfaf15f1684336a144b31a2ae1b691/FLAG78e27ece5 [2023-11-19 07:58:54,021 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/data/a691a65c5/79dfaf15f1684336a144b31a2ae1b691 [2023-11-19 07:58:54,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:54,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:54,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:54,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:54,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:54,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:54" (1/1) ... [2023-11-19 07:58:54,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e386e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:54, skipping insertion in model container [2023-11-19 07:58:54,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:54" (1/1) ... [2023-11-19 07:58:54,122 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:54,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:54,931 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:54,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:55,090 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:55,091 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:55,099 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:55,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55 WrapperNode [2023-11-19 07:58:55,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:55,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:55,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:55,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:55,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,154 INFO L138 Inliner]: procedures = 365, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-19 07:58:55,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:55,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:55,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:55,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:55,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:55,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:55,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:55,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:55,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (1/1) ... [2023-11-19 07:58:55,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:55,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:55,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:55,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:58:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:58:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2023-11-19 07:58:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2023-11-19 07:58:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:55,329 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:58:55,519 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:55,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:55,723 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:55,752 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:55,752 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:58:55,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:55 BoogieIcfgContainer [2023-11-19 07:58:55,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:55,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:55,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:55,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:55,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:54" (1/3) ... [2023-11-19 07:58:55,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29199a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:55, skipping insertion in model container [2023-11-19 07:58:55,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:55" (2/3) ... [2023-11-19 07:58:55,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29199a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:55, skipping insertion in model container [2023-11-19 07:58:55,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:55" (3/3) ... [2023-11-19 07:58:55,767 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2023-11-19 07:58:55,777 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:58:55,789 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:55,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:58:55,790 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:55,876 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:58:55,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 219 flow [2023-11-19 07:58:56,012 INFO L124 PetriNetUnfolderBase]: 8/105 cut-off events. [2023-11-19 07:58:56,014 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:56,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 8/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-19 07:58:56,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 106 transitions, 219 flow [2023-11-19 07:58:56,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 77 transitions, 157 flow [2023-11-19 07:58:56,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:56,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 77 transitions, 157 flow [2023-11-19 07:58:56,050 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 77 transitions, 157 flow [2023-11-19 07:58:56,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 77 transitions, 157 flow [2023-11-19 07:58:56,094 INFO L124 PetriNetUnfolderBase]: 5/77 cut-off events. [2023-11-19 07:58:56,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:56,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 96 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-19 07:58:56,098 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-11-19 07:58:58,481 INFO L134 LiptonReduction]: Checked pairs total: 1375 [2023-11-19 07:58:58,481 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-11-19 07:58:58,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:58,517 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;@bcb5c74, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:58,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:58:58,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:58,524 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-11-19 07:58:58,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:58,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:58,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:58:58,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_dataraceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:58:58,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:58,531 INFO L85 PathProgramCache]: Analyzing trace with hash 11929974, now seen corresponding path program 1 times [2023-11-19 07:58:58,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:58,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48497907] [2023-11-19 07:58:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:58,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:58,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48497907] [2023-11-19 07:58:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48497907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:58,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519352934] [2023-11-19 07:58:58,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:58,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:58,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:58,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:58,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 183 [2023-11-19 07:58:58,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-11-19 07:58:58,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:58,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 183 [2023-11-19 07:58:58,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:58,937 INFO L124 PetriNetUnfolderBase]: 74/140 cut-off events. [2023-11-19 07:58:58,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:58,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 140 events. 74/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 460 event pairs, 19 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 276. Up to 82 conditions per place. [2023-11-19 07:58:58,943 INFO L140 encePairwiseOnDemand]: 174/183 looper letters, 21 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2023-11-19 07:58:58,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 27 transitions, 111 flow [2023-11-19 07:58:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-19 07:58:58,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482695810564663 [2023-11-19 07:58:58,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-19 07:58:58,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-19 07:58:58,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:58,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-19 07:58:58,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2023-11-19 07:58:58,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:58:58,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:58:58,977 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 3 states and 301 transitions. [2023-11-19 07:58:58,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 27 transitions, 111 flow [2023-11-19 07:58:58,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:58,981 INFO L231 Difference]: Finished difference. Result has 21 places, 21 transitions, 82 flow [2023-11-19 07:58:58,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=21, PETRI_TRANSITIONS=21} [2023-11-19 07:58:58,987 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-11-19 07:58:58,987 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 21 transitions, 82 flow [2023-11-19 07:58:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-11-19 07:58:58,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:58,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:58:58,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:58,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:58:58,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:58,989 INFO L85 PathProgramCache]: Analyzing trace with hash 11929975, now seen corresponding path program 1 times [2023-11-19 07:58:58,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:58,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378517095] [2023-11-19 07:58:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:58,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:59,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:59,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378517095] [2023-11-19 07:58:59,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378517095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:59,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:59,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:59,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807736509] [2023-11-19 07:58:59,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:59,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:59,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:59,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 183 [2023-11-19 07:58:59,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 21 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-11-19 07:58:59,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:59,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 183 [2023-11-19 07:58:59,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:59,133 INFO L124 PetriNetUnfolderBase]: 91/173 cut-off events. [2023-11-19 07:58:59,133 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-19 07:58:59,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 173 events. 91/173 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 605 event pairs, 10 based on Foata normal form. 9/108 useless extension candidates. Maximal degree in co-relation 452. Up to 137 conditions per place. [2023-11-19 07:58:59,135 INFO L140 encePairwiseOnDemand]: 173/183 looper letters, 25 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2023-11-19 07:58:59,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 36 transitions, 206 flow [2023-11-19 07:58:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-11-19 07:58:59,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546448087431694 [2023-11-19 07:58:59,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-11-19 07:58:59,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-11-19 07:58:59,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:59,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-11-19 07:58:59,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 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) [2023-11-19 07:58:59,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:58:59,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:58:59,144 INFO L175 Difference]: Start difference. First operand has 21 places, 21 transitions, 82 flow. Second operand 3 states and 300 transitions. [2023-11-19 07:58:59,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 36 transitions, 206 flow [2023-11-19 07:58:59,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 36 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:59,147 INFO L231 Difference]: Finished difference. Result has 23 places, 31 transitions, 178 flow [2023-11-19 07:58:59,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=23, PETRI_TRANSITIONS=31} [2023-11-19 07:58:59,148 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-11-19 07:58:59,149 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 31 transitions, 178 flow [2023-11-19 07:58:59,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2023-11-19 07:58:59,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:59,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:58:59,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:59,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:58:59,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash 11930745, now seen corresponding path program 1 times [2023-11-19 07:58:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:59,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779993681] [2023-11-19 07:58:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:59,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:59,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:59,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779993681] [2023-11-19 07:58:59,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779993681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:59,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:59,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:59,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978461251] [2023-11-19 07:58:59,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:59,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:59,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:59,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:59,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:59,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 183 [2023-11-19 07:58:59,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 31 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2023-11-19 07:58:59,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:59,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 183 [2023-11-19 07:58:59,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:59,377 INFO L124 PetriNetUnfolderBase]: 102/211 cut-off events. [2023-11-19 07:58:59,378 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-19 07:58:59,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 211 events. 102/211 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 915 event pairs, 28 based on Foata normal form. 11/156 useless extension candidates. Maximal degree in co-relation 710. Up to 150 conditions per place. [2023-11-19 07:58:59,385 INFO L140 encePairwiseOnDemand]: 179/183 looper letters, 53 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-11-19 07:58:59,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 56 transitions, 442 flow [2023-11-19 07:58:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-11-19 07:58:59,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227686703096539 [2023-11-19 07:58:59,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-11-19 07:58:59,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-11-19 07:58:59,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:59,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-11-19 07:58:59,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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) [2023-11-19 07:58:59,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:58:59,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:58:59,396 INFO L175 Difference]: Start difference. First operand has 23 places, 31 transitions, 178 flow. Second operand 3 states and 287 transitions. [2023-11-19 07:58:59,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 56 transitions, 442 flow [2023-11-19 07:58:59,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 56 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:59,405 INFO L231 Difference]: Finished difference. Result has 24 places, 33 transitions, 183 flow [2023-11-19 07:58:59,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=24, PETRI_TRANSITIONS=33} [2023-11-19 07:58:59,407 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-11-19 07:58:59,407 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 33 transitions, 183 flow [2023-11-19 07:58:59,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2023-11-19 07:58:59,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:59,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:58:59,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:58:59,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_dataraceErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:58:59,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash 369829823, now seen corresponding path program 1 times [2023-11-19 07:58:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544785731] [2023-11-19 07:58:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:59,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:59,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:59,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544785731] [2023-11-19 07:58:59,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544785731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:59,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:59,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096284323] [2023-11-19 07:58:59,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:59,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:59,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 183 [2023-11-19 07:58:59,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 33 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-11-19 07:58:59,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:59,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 183 [2023-11-19 07:58:59,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:59,627 INFO L124 PetriNetUnfolderBase]: 87/197 cut-off events. [2023-11-19 07:58:59,627 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-19 07:58:59,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 197 events. 87/197 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 873 event pairs, 29 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 692. Up to 166 conditions per place. [2023-11-19 07:58:59,631 INFO L140 encePairwiseOnDemand]: 178/183 looper letters, 37 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2023-11-19 07:58:59,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 40 transitions, 299 flow [2023-11-19 07:58:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-11-19 07:58:59,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300546448087432 [2023-11-19 07:58:59,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-11-19 07:58:59,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-11-19 07:58:59,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:59,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-11-19 07:58:59,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2023-11-19 07:58:59,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:58:59,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:58:59,639 INFO L175 Difference]: Start difference. First operand has 24 places, 33 transitions, 183 flow. Second operand 3 states and 291 transitions. [2023-11-19 07:58:59,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 40 transitions, 299 flow [2023-11-19 07:58:59,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 40 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:59,643 INFO L231 Difference]: Finished difference. Result has 26 places, 32 transitions, 191 flow [2023-11-19 07:58:59,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=26, PETRI_TRANSITIONS=32} [2023-11-19 07:58:59,646 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-11-19 07:58:59,646 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 32 transitions, 191 flow [2023-11-19 07:58:59,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2023-11-19 07:58:59,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:59,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:58:59,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:58:59,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:58:59,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash 369853891, now seen corresponding path program 1 times [2023-11-19 07:58:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:59,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529119069] [2023-11-19 07:58:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:59,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:59,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529119069] [2023-11-19 07:58:59,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529119069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:59,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092348886] [2023-11-19 07:58:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:59,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:59,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:59,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:59,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:58:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:59,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:59,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:59,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092348886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:59,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:59,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 07:58:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034354673] [2023-11-19 07:58:59,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:59,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:59,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 183 [2023-11-19 07:58:59,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 32 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 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) [2023-11-19 07:58:59,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:59,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 183 [2023-11-19 07:58:59,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:00,043 INFO L124 PetriNetUnfolderBase]: 128/276 cut-off events. [2023-11-19 07:59:00,044 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-11-19 07:59:00,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 276 events. 128/276 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1286 event pairs, 7 based on Foata normal form. 17/215 useless extension candidates. Maximal degree in co-relation 1019. Up to 167 conditions per place. [2023-11-19 07:59:00,048 INFO L140 encePairwiseOnDemand]: 172/183 looper letters, 36 selfloop transitions, 30 changer transitions 0/66 dead transitions. [2023-11-19 07:59:00,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 66 transitions, 508 flow [2023-11-19 07:59:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:59:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2023-11-19 07:59:00,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446265938069217 [2023-11-19 07:59:00,051 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2023-11-19 07:59:00,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2023-11-19 07:59:00,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:00,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2023-11-19 07:59:00,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:00,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2023-11-19 07:59:00,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2023-11-19 07:59:00,058 INFO L175 Difference]: Start difference. First operand has 26 places, 32 transitions, 191 flow. Second operand 6 states and 598 transitions. [2023-11-19 07:59:00,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 66 transitions, 508 flow [2023-11-19 07:59:00,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 66 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:00,063 INFO L231 Difference]: Finished difference. Result has 34 places, 52 transitions, 463 flow [2023-11-19 07:59:00,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=34, PETRI_TRANSITIONS=52} [2023-11-19 07:59:00,066 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 15 predicate places. [2023-11-19 07:59:00,067 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 52 transitions, 463 flow [2023-11-19 07:59:00,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 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) [2023-11-19 07:59:00,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:00,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:59:00,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:59:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:00,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:00,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash 369853924, now seen corresponding path program 1 times [2023-11-19 07:59:00,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:00,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797840254] [2023-11-19 07:59:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797840254] [2023-11-19 07:59:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797840254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:00,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:00,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:00,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043924950] [2023-11-19 07:59:00,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:00,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:00,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:00,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:00,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 183 [2023-11-19 07:59:00,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 52 transitions, 463 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2023-11-19 07:59:00,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:00,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 183 [2023-11-19 07:59:00,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:00,409 INFO L124 PetriNetUnfolderBase]: 105/231 cut-off events. [2023-11-19 07:59:00,410 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2023-11-19 07:59:00,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 231 events. 105/231 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1035 event pairs, 11 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 1121. Up to 219 conditions per place. [2023-11-19 07:59:00,413 INFO L140 encePairwiseOnDemand]: 181/183 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-19 07:59:00,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 57 transitions, 604 flow [2023-11-19 07:59:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-11-19 07:59:00,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136612021857924 [2023-11-19 07:59:00,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-11-19 07:59:00,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-11-19 07:59:00,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:00,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-11-19 07:59:00,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 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) [2023-11-19 07:59:00,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:59:00,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:59:00,419 INFO L175 Difference]: Start difference. First operand has 34 places, 52 transitions, 463 flow. Second operand 3 states and 282 transitions. [2023-11-19 07:59:00,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 57 transitions, 604 flow [2023-11-19 07:59:00,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 57 transitions, 558 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:00,425 INFO L231 Difference]: Finished difference. Result has 34 places, 47 transitions, 380 flow [2023-11-19 07:59:00,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=34, PETRI_TRANSITIONS=47} [2023-11-19 07:59:00,426 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 15 predicate places. [2023-11-19 07:59:00,427 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 47 transitions, 380 flow [2023-11-19 07:59:00,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2023-11-19 07:59:00,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:00,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:59:00,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:59:00,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:00,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:00,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1420177006, now seen corresponding path program 1 times [2023-11-19 07:59:00,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:00,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301481433] [2023-11-19 07:59:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:00,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301481433] [2023-11-19 07:59:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301481433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623087039] [2023-11-19 07:59:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:00,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:00,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:00,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:00,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:59:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:00,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:59:00,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:00,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623087039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:00,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:00,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:59:00,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551848873] [2023-11-19 07:59:00,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:00,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:00,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:00,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:00,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 183 [2023-11-19 07:59:00,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 47 transitions, 380 flow. Second operand has 8 states, 8 states have (on average 85.5) internal successors, (684), 8 states have internal predecessors, (684), 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) [2023-11-19 07:59:00,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:00,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 183 [2023-11-19 07:59:00,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:00,977 INFO L124 PetriNetUnfolderBase]: 254/498 cut-off events. [2023-11-19 07:59:00,977 INFO L125 PetriNetUnfolderBase]: For 900/900 co-relation queries the response was YES. [2023-11-19 07:59:00,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 498 events. 254/498 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2408 event pairs, 8 based on Foata normal form. 36/464 useless extension candidates. Maximal degree in co-relation 2274. Up to 213 conditions per place. [2023-11-19 07:59:00,984 INFO L140 encePairwiseOnDemand]: 173/183 looper letters, 64 selfloop transitions, 100 changer transitions 0/164 dead transitions. [2023-11-19 07:59:00,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 164 transitions, 1534 flow [2023-11-19 07:59:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:59:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 07:59:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1475 transitions. [2023-11-19 07:59:00,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037568306010929 [2023-11-19 07:59:00,991 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1475 transitions. [2023-11-19 07:59:00,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1475 transitions. [2023-11-19 07:59:00,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:00,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1475 transitions. [2023-11-19 07:59:00,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 92.1875) internal successors, (1475), 16 states have internal predecessors, (1475), 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) [2023-11-19 07:59:01,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2023-11-19 07:59:01,005 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2023-11-19 07:59:01,005 INFO L175 Difference]: Start difference. First operand has 34 places, 47 transitions, 380 flow. Second operand 16 states and 1475 transitions. [2023-11-19 07:59:01,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 164 transitions, 1534 flow [2023-11-19 07:59:01,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 164 transitions, 1527 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:01,015 INFO L231 Difference]: Finished difference. Result has 55 places, 126 transitions, 1356 flow [2023-11-19 07:59:01,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1356, PETRI_PLACES=55, PETRI_TRANSITIONS=126} [2023-11-19 07:59:01,016 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 36 predicate places. [2023-11-19 07:59:01,017 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 126 transitions, 1356 flow [2023-11-19 07:59:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.5) internal successors, (684), 8 states have internal predecessors, (684), 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) [2023-11-19 07:59:01,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:01,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:59:01,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:01,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:01,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_dataraceErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:01,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1420177007, now seen corresponding path program 1 times [2023-11-19 07:59:01,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:01,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189280217] [2023-11-19 07:59:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:01,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:01,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:01,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189280217] [2023-11-19 07:59:01,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189280217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:01,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:01,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:01,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068336643] [2023-11-19 07:59:01,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:01,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:01,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:01,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:01,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:01,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 183 [2023-11-19 07:59:01,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 126 transitions, 1356 flow. Second operand has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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) [2023-11-19 07:59:01,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:01,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 183 [2023-11-19 07:59:01,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:01,451 INFO L124 PetriNetUnfolderBase]: 177/348 cut-off events. [2023-11-19 07:59:01,452 INFO L125 PetriNetUnfolderBase]: For 1493/1493 co-relation queries the response was YES. [2023-11-19 07:59:01,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 348 events. 177/348 cut-off events. For 1493/1493 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1490 event pairs, 20 based on Foata normal form. 63/361 useless extension candidates. Maximal degree in co-relation 1991. Up to 310 conditions per place. [2023-11-19 07:59:01,457 INFO L140 encePairwiseOnDemand]: 176/183 looper letters, 88 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2023-11-19 07:59:01,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 98 transitions, 1249 flow [2023-11-19 07:59:01,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:59:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2023-11-19 07:59:01,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49453551912568305 [2023-11-19 07:59:01,461 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2023-11-19 07:59:01,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2023-11-19 07:59:01,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:01,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2023-11-19 07:59:01,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 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) [2023-11-19 07:59:01,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2023-11-19 07:59:01,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 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) [2023-11-19 07:59:01,467 INFO L175 Difference]: Start difference. First operand has 55 places, 126 transitions, 1356 flow. Second operand 6 states and 543 transitions. [2023-11-19 07:59:01,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 98 transitions, 1249 flow [2023-11-19 07:59:01,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 98 transitions, 1201 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:01,484 INFO L231 Difference]: Finished difference. Result has 57 places, 91 transitions, 987 flow [2023-11-19 07:59:01,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=987, PETRI_PLACES=57, PETRI_TRANSITIONS=91} [2023-11-19 07:59:01,485 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 38 predicate places. [2023-11-19 07:59:01,486 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 91 transitions, 987 flow [2023-11-19 07:59:01,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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) [2023-11-19 07:59:01,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:01,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:59:01,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:59:01,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_dataraceErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:01,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1075813628, now seen corresponding path program 1 times [2023-11-19 07:59:01,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:01,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410502812] [2023-11-19 07:59:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:01,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:01,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:01,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410502812] [2023-11-19 07:59:01,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410502812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:01,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:01,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887814520] [2023-11-19 07:59:01,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:01,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:01,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:01,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:01,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 183 [2023-11-19 07:59:01,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 91 transitions, 987 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-11-19 07:59:01,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:01,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 183 [2023-11-19 07:59:01,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:01,652 INFO L124 PetriNetUnfolderBase]: 155/310 cut-off events. [2023-11-19 07:59:01,653 INFO L125 PetriNetUnfolderBase]: For 1186/1186 co-relation queries the response was YES. [2023-11-19 07:59:01,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 310 events. 155/310 cut-off events. For 1186/1186 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1336 event pairs, 23 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 1702. Up to 170 conditions per place. [2023-11-19 07:59:01,658 INFO L140 encePairwiseOnDemand]: 178/183 looper letters, 62 selfloop transitions, 34 changer transitions 0/96 dead transitions. [2023-11-19 07:59:01,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 96 transitions, 1212 flow [2023-11-19 07:59:01,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-11-19 07:59:01,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100182149362478 [2023-11-19 07:59:01,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-11-19 07:59:01,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-11-19 07:59:01,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:01,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-11-19 07:59:01,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2023-11-19 07:59:01,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:59:01,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:59:01,664 INFO L175 Difference]: Start difference. First operand has 57 places, 91 transitions, 987 flow. Second operand 3 states and 280 transitions. [2023-11-19 07:59:01,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 96 transitions, 1212 flow [2023-11-19 07:59:01,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 1171 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:59:01,680 INFO L231 Difference]: Finished difference. Result has 54 places, 82 transitions, 910 flow [2023-11-19 07:59:01,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=54, PETRI_TRANSITIONS=82} [2023-11-19 07:59:01,681 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 35 predicate places. [2023-11-19 07:59:01,681 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 82 transitions, 910 flow [2023-11-19 07:59:01,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-11-19 07:59:01,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:01,682 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:59:01,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:59:01,682 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_function_dataraceErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:01,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1075813654, now seen corresponding path program 1 times [2023-11-19 07:59:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:01,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436944287] [2023-11-19 07:59:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:01,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:01,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436944287] [2023-11-19 07:59:01,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436944287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:01,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:01,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:01,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943798884] [2023-11-19 07:59:01,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:01,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:01,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:01,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:01,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:01,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 183 [2023-11-19 07:59:01,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 82 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2023-11-19 07:59:01,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:01,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 183 [2023-11-19 07:59:01,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:01,817 INFO L124 PetriNetUnfolderBase]: 133/272 cut-off events. [2023-11-19 07:59:01,817 INFO L125 PetriNetUnfolderBase]: For 1333/1333 co-relation queries the response was YES. [2023-11-19 07:59:01,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 272 events. 133/272 cut-off events. For 1333/1333 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1150 event pairs, 17 based on Foata normal form. 25/297 useless extension candidates. Maximal degree in co-relation 1528. Up to 259 conditions per place. [2023-11-19 07:59:01,822 INFO L140 encePairwiseOnDemand]: 181/183 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-11-19 07:59:01,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 1039 flow [2023-11-19 07:59:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-11-19 07:59:01,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100182149362478 [2023-11-19 07:59:01,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-11-19 07:59:01,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-11-19 07:59:01,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:01,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-11-19 07:59:01,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2023-11-19 07:59:01,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:59:01,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2023-11-19 07:59:01,828 INFO L175 Difference]: Start difference. First operand has 54 places, 82 transitions, 910 flow. Second operand 3 states and 280 transitions. [2023-11-19 07:59:01,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 1039 flow [2023-11-19 07:59:01,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 1005 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:01,841 INFO L231 Difference]: Finished difference. Result has 54 places, 73 transitions, 776 flow [2023-11-19 07:59:01,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=776, PETRI_PLACES=54, PETRI_TRANSITIONS=73} [2023-11-19 07:59:01,843 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 35 predicate places. [2023-11-19 07:59:01,843 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 73 transitions, 776 flow [2023-11-19 07:59:01,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2023-11-19 07:59:01,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:01,844 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-19 07:59:01,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:59:01,844 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:01,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:01,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1727958808, now seen corresponding path program 2 times [2023-11-19 07:59:01,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:01,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643754411] [2023-11-19 07:59:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:01,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:01,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:01,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643754411] [2023-11-19 07:59:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643754411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:01,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376268321] [2023-11-19 07:59:01,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:59:01,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:01,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:01,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:01,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:59:02,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:59:02,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:02,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:02,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:02,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376268321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:02,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:02,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:59:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763221029] [2023-11-19 07:59:02,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:02,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:59:02,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:59:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:59:02,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 183 [2023-11-19 07:59:02,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 73 transitions, 776 flow. Second operand has 12 states, 12 states have (on average 91.33333333333333) internal successors, (1096), 12 states have internal predecessors, (1096), 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) [2023-11-19 07:59:02,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:02,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 183 [2023-11-19 07:59:02,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:02,311 INFO L124 PetriNetUnfolderBase]: 205/416 cut-off events. [2023-11-19 07:59:02,311 INFO L125 PetriNetUnfolderBase]: For 2019/2019 co-relation queries the response was YES. [2023-11-19 07:59:02,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 416 events. 205/416 cut-off events. For 2019/2019 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1735 event pairs, 26 based on Foata normal form. 42/458 useless extension candidates. Maximal degree in co-relation 2260. Up to 241 conditions per place. [2023-11-19 07:59:02,318 INFO L140 encePairwiseOnDemand]: 177/183 looper letters, 64 selfloop transitions, 84 changer transitions 0/148 dead transitions. [2023-11-19 07:59:02,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 148 transitions, 1734 flow [2023-11-19 07:59:02,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:59:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:59:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1154 transitions. [2023-11-19 07:59:02,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255009107468124 [2023-11-19 07:59:02,324 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1154 transitions. [2023-11-19 07:59:02,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1154 transitions. [2023-11-19 07:59:02,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:02,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1154 transitions. [2023-11-19 07:59:02,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.16666666666667) internal successors, (1154), 12 states have internal predecessors, (1154), 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) [2023-11-19 07:59:02,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2023-11-19 07:59:02,335 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2023-11-19 07:59:02,335 INFO L175 Difference]: Start difference. First operand has 54 places, 73 transitions, 776 flow. Second operand 12 states and 1154 transitions. [2023-11-19 07:59:02,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 148 transitions, 1734 flow [2023-11-19 07:59:02,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 148 transitions, 1723 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:59:02,355 INFO L231 Difference]: Finished difference. Result has 71 places, 122 transitions, 1617 flow [2023-11-19 07:59:02,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1617, PETRI_PLACES=71, PETRI_TRANSITIONS=122} [2023-11-19 07:59:02,357 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 52 predicate places. [2023-11-19 07:59:02,357 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 122 transitions, 1617 flow [2023-11-19 07:59:02,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 91.33333333333333) internal successors, (1096), 12 states have internal predecessors, (1096), 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) [2023-11-19 07:59:02,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:02,358 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:02,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:02,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:02,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:02,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2011526966, now seen corresponding path program 1 times [2023-11-19 07:59:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728599844] [2023-11-19 07:59:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:02,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:02,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728599844] [2023-11-19 07:59:02,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728599844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:02,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008865648] [2023-11-19 07:59:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:02,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:02,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:02,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:02,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:59:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:02,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:59:02,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:02,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:02,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008865648] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:02,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:02,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:59:02,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435267291] [2023-11-19 07:59:02,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:02,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:59:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:02,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:59:02,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:59:02,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 183 [2023-11-19 07:59:02,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 122 transitions, 1617 flow. Second operand has 14 states, 14 states have (on average 85.42857142857143) internal successors, (1196), 14 states have internal predecessors, (1196), 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) [2023-11-19 07:59:02,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:02,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 183 [2023-11-19 07:59:02,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:03,401 INFO L124 PetriNetUnfolderBase]: 341/686 cut-off events. [2023-11-19 07:59:03,402 INFO L125 PetriNetUnfolderBase]: For 5133/5133 co-relation queries the response was YES. [2023-11-19 07:59:03,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4229 conditions, 686 events. 341/686 cut-off events. For 5133/5133 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3380 event pairs, 6 based on Foata normal form. 70/756 useless extension candidates. Maximal degree in co-relation 4192. Up to 285 conditions per place. [2023-11-19 07:59:03,413 INFO L140 encePairwiseOnDemand]: 177/183 looper letters, 82 selfloop transitions, 191 changer transitions 0/273 dead transitions. [2023-11-19 07:59:03,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 273 transitions, 3652 flow [2023-11-19 07:59:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-19 07:59:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-19 07:59:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2670 transitions. [2023-11-19 07:59:03,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2023-11-19 07:59:03,424 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2670 transitions. [2023-11-19 07:59:03,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2670 transitions. [2023-11-19 07:59:03,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:03,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2670 transitions. [2023-11-19 07:59:03,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 89.0) internal successors, (2670), 30 states have internal predecessors, (2670), 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) [2023-11-19 07:59:03,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 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) [2023-11-19 07:59:03,447 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 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) [2023-11-19 07:59:03,448 INFO L175 Difference]: Start difference. First operand has 71 places, 122 transitions, 1617 flow. Second operand 30 states and 2670 transitions. [2023-11-19 07:59:03,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 273 transitions, 3652 flow [2023-11-19 07:59:03,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 273 transitions, 3529 flow, removed 52 selfloop flow, removed 3 redundant places. [2023-11-19 07:59:03,484 INFO L231 Difference]: Finished difference. Result has 109 places, 218 transitions, 3366 flow [2023-11-19 07:59:03,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1526, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3366, PETRI_PLACES=109, PETRI_TRANSITIONS=218} [2023-11-19 07:59:03,485 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 90 predicate places. [2023-11-19 07:59:03,485 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 218 transitions, 3366 flow [2023-11-19 07:59:03,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 85.42857142857143) internal successors, (1196), 14 states have internal predecessors, (1196), 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) [2023-11-19 07:59:03,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:03,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:59:03,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:03,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:59:03,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:03,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1983133762, now seen corresponding path program 2 times [2023-11-19 07:59:03,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:03,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512926056] [2023-11-19 07:59:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:03,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:03,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:03,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512926056] [2023-11-19 07:59:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512926056] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:03,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872556935] [2023-11-19 07:59:03,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:59:03,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:03,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:03,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:59:03,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:59:03,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:03,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:59:03,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:03,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:04,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872556935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:04,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:04,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-19 07:59:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995106353] [2023-11-19 07:59:04,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:59:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:59:04,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:59:04,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 183 [2023-11-19 07:59:04,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 218 transitions, 3366 flow. Second operand has 16 states, 16 states have (on average 86.375) internal successors, (1382), 16 states have internal predecessors, (1382), 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) [2023-11-19 07:59:04,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:04,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 183 [2023-11-19 07:59:04,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:05,085 INFO L124 PetriNetUnfolderBase]: 729/1460 cut-off events. [2023-11-19 07:59:05,085 INFO L125 PetriNetUnfolderBase]: For 27917/27917 co-relation queries the response was YES. [2023-11-19 07:59:05,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10390 conditions, 1460 events. 729/1460 cut-off events. For 27917/27917 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8763 event pairs, 12 based on Foata normal form. 136/1596 useless extension candidates. Maximal degree in co-relation 10340. Up to 622 conditions per place. [2023-11-19 07:59:05,112 INFO L140 encePairwiseOnDemand]: 177/183 looper letters, 154 selfloop transitions, 398 changer transitions 0/552 dead transitions. [2023-11-19 07:59:05,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 552 transitions, 8773 flow [2023-11-19 07:59:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-19 07:59:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-19 07:59:05,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3984 transitions. [2023-11-19 07:59:05,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947839046199702 [2023-11-19 07:59:05,124 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3984 transitions. [2023-11-19 07:59:05,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3984 transitions. [2023-11-19 07:59:05,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:05,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3984 transitions. [2023-11-19 07:59:05,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 90.54545454545455) internal successors, (3984), 44 states have internal predecessors, (3984), 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) [2023-11-19 07:59:05,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 183.0) internal successors, (8235), 45 states have internal predecessors, (8235), 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) [2023-11-19 07:59:05,154 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 183.0) internal successors, (8235), 45 states have internal predecessors, (8235), 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) [2023-11-19 07:59:05,155 INFO L175 Difference]: Start difference. First operand has 109 places, 218 transitions, 3366 flow. Second operand 44 states and 3984 transitions. [2023-11-19 07:59:05,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 552 transitions, 8773 flow [2023-11-19 07:59:05,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 552 transitions, 8281 flow, removed 225 selfloop flow, removed 7 redundant places. [2023-11-19 07:59:05,272 INFO L231 Difference]: Finished difference. Result has 165 places, 456 transitions, 7916 flow [2023-11-19 07:59:05,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7916, PETRI_PLACES=165, PETRI_TRANSITIONS=456} [2023-11-19 07:59:05,273 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 146 predicate places. [2023-11-19 07:59:05,274 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 456 transitions, 7916 flow [2023-11-19 07:59:05,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 86.375) internal successors, (1382), 16 states have internal predecessors, (1382), 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) [2023-11-19 07:59:05,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:05,275 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:59:05,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:59:05,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:05,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1697406600, now seen corresponding path program 3 times [2023-11-19 07:59:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:05,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397409243] [2023-11-19 07:59:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:05,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397409243] [2023-11-19 07:59:05,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397409243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594710730] [2023-11-19 07:59:05,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:59:05,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:05,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:05,667 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:05,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:59:05,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:59:05,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:05,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:59:05,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:05,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594710730] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:05,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:05,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-19 07:59:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605910452] [2023-11-19 07:59:05,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:05,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:59:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:05,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:59:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:59:06,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 183 [2023-11-19 07:59:06,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 456 transitions, 7916 flow. Second operand has 20 states, 20 states have (on average 86.3) internal successors, (1726), 20 states have internal predecessors, (1726), 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) [2023-11-19 07:59:06,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:06,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 183 [2023-11-19 07:59:06,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:08,396 INFO L124 PetriNetUnfolderBase]: 1432/2866 cut-off events. [2023-11-19 07:59:08,396 INFO L125 PetriNetUnfolderBase]: For 163351/163351 co-relation queries the response was YES. [2023-11-19 07:59:08,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22373 conditions, 2866 events. 1432/2866 cut-off events. For 163351/163351 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19071 event pairs, 27 based on Foata normal form. 331/3197 useless extension candidates. Maximal degree in co-relation 22302. Up to 1276 conditions per place. [2023-11-19 07:59:08,465 INFO L140 encePairwiseOnDemand]: 177/183 looper letters, 221 selfloop transitions, 813 changer transitions 0/1034 dead transitions. [2023-11-19 07:59:08,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1034 transitions, 18271 flow [2023-11-19 07:59:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-19 07:59:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-11-19 07:59:08,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 5805 transitions. [2023-11-19 07:59:08,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956454918032787 [2023-11-19 07:59:08,484 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 5805 transitions. [2023-11-19 07:59:08,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 5805 transitions. [2023-11-19 07:59:08,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:08,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 5805 transitions. [2023-11-19 07:59:08,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 90.703125) internal successors, (5805), 64 states have internal predecessors, (5805), 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) [2023-11-19 07:59:08,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 183.0) internal successors, (11895), 65 states have internal predecessors, (11895), 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) [2023-11-19 07:59:08,545 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 183.0) internal successors, (11895), 65 states have internal predecessors, (11895), 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) [2023-11-19 07:59:08,545 INFO L175 Difference]: Start difference. First operand has 165 places, 456 transitions, 7916 flow. Second operand 64 states and 5805 transitions. [2023-11-19 07:59:08,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1034 transitions, 18271 flow [2023-11-19 07:59:09,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 1034 transitions, 16899 flow, removed 362 selfloop flow, removed 12 redundant places. [2023-11-19 07:59:09,029 INFO L231 Difference]: Finished difference. Result has 249 places, 898 transitions, 16947 flow [2023-11-19 07:59:09,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=7282, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=16947, PETRI_PLACES=249, PETRI_TRANSITIONS=898} [2023-11-19 07:59:09,030 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 230 predicate places. [2023-11-19 07:59:09,030 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 898 transitions, 16947 flow [2023-11-19 07:59:09,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 86.3) internal successors, (1726), 20 states have internal predecessors, (1726), 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) [2023-11-19 07:59:09,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:09,030 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:59:09,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:09,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:59:09,231 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:09,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1942658202, now seen corresponding path program 1 times [2023-11-19 07:59:09,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:09,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044295973] [2023-11-19 07:59:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:09,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:09,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:09,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044295973] [2023-11-19 07:59:09,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044295973] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:09,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607037952] [2023-11-19 07:59:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:09,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:09,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:59:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:09,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:59:09,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:09,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607037952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:09,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-11-19 07:59:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758518937] [2023-11-19 07:59:09,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:09,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-19 07:59:09,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 07:59:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:59:09,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 183 [2023-11-19 07:59:09,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 898 transitions, 16947 flow. Second operand has 22 states, 22 states have (on average 85.27272727272727) internal successors, (1876), 22 states have internal predecessors, (1876), 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) [2023-11-19 07:59:09,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:09,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 183 [2023-11-19 07:59:09,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:13,551 INFO L124 PetriNetUnfolderBase]: 2408/4817 cut-off events. [2023-11-19 07:59:13,551 INFO L125 PetriNetUnfolderBase]: For 553550/553550 co-relation queries the response was YES. [2023-11-19 07:59:13,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43136 conditions, 4817 events. 2408/4817 cut-off events. For 553550/553550 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 35935 event pairs, 11 based on Foata normal form. 245/5062 useless extension candidates. Maximal degree in co-relation 43032. Up to 2159 conditions per place. [2023-11-19 07:59:13,646 INFO L140 encePairwiseOnDemand]: 177/183 looper letters, 314 selfloop transitions, 1436 changer transitions 0/1750 dead transitions. [2023-11-19 07:59:13,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1750 transitions, 34977 flow [2023-11-19 07:59:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-19 07:59:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-11-19 07:59:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 6088 transitions. [2023-11-19 07:59:13,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4892317582770813 [2023-11-19 07:59:13,662 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 6088 transitions. [2023-11-19 07:59:13,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 6088 transitions. [2023-11-19 07:59:13,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:13,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 6088 transitions. [2023-11-19 07:59:13,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 89.52941176470588) internal successors, (6088), 68 states have internal predecessors, (6088), 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) [2023-11-19 07:59:13,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 183.0) internal successors, (12627), 69 states have internal predecessors, (12627), 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) [2023-11-19 07:59:13,702 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 183.0) internal successors, (12627), 69 states have internal predecessors, (12627), 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) [2023-11-19 07:59:13,702 INFO L175 Difference]: Start difference. First operand has 249 places, 898 transitions, 16947 flow. Second operand 68 states and 6088 transitions. [2023-11-19 07:59:13,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1750 transitions, 34977 flow [2023-11-19 07:59:15,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1750 transitions, 32413 flow, removed 1140 selfloop flow, removed 18 redundant places. [2023-11-19 07:59:15,994 INFO L231 Difference]: Finished difference. Result has 326 places, 1589 transitions, 31827 flow [2023-11-19 07:59:15,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=15531, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=814, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=31827, PETRI_PLACES=326, PETRI_TRANSITIONS=1589} [2023-11-19 07:59:15,996 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 307 predicate places. [2023-11-19 07:59:15,996 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 1589 transitions, 31827 flow [2023-11-19 07:59:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 85.27272727272727) internal successors, (1876), 22 states have internal predecessors, (1876), 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) [2023-11-19 07:59:15,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:15,997 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:59:16,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:59:16,213 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:16,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1728019651, now seen corresponding path program 2 times [2023-11-19 07:59:16,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:16,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290085522] [2023-11-19 07:59:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:16,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:16,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290085522] [2023-11-19 07:59:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290085522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:16,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576300512] [2023-11-19 07:59:16,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:59:16,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:16,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:16,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:16,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:59:16,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:59:16,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:16,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:59:16,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:16,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:16,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576300512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:16,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:16,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-19 07:59:16,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329023154] [2023-11-19 07:59:16,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:16,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:59:16,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:16,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:59:16,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:59:16,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 183 [2023-11-19 07:59:16,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1589 transitions, 31827 flow. Second operand has 24 states, 24 states have (on average 85.25) internal successors, (2046), 24 states have internal predecessors, (2046), 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) [2023-11-19 07:59:16,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:16,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 183 [2023-11-19 07:59:16,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:26,591 INFO L124 PetriNetUnfolderBase]: 4311/8617 cut-off events. [2023-11-19 07:59:26,591 INFO L125 PetriNetUnfolderBase]: For 2305961/2305961 co-relation queries the response was YES. [2023-11-19 07:59:26,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84271 conditions, 8617 events. 4311/8617 cut-off events. For 2305961/2305961 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 70825 event pairs, 21 based on Foata normal form. 637/9254 useless extension candidates. Maximal degree in co-relation 84138. Up to 3905 conditions per place. [2023-11-19 07:59:26,877 INFO L140 encePairwiseOnDemand]: 177/183 looper letters, 377 selfloop transitions, 2646 changer transitions 0/3023 dead transitions. [2023-11-19 07:59:26,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 3023 transitions, 64438 flow [2023-11-19 07:59:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-11-19 07:59:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-11-19 07:59:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 7790 transitions. [2023-11-19 07:59:26,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48929087368883867 [2023-11-19 07:59:26,891 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 7790 transitions. [2023-11-19 07:59:26,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 7790 transitions. [2023-11-19 07:59:26,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:26,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 7790 transitions. [2023-11-19 07:59:26,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 89.54022988505747) internal successors, (7790), 87 states have internal predecessors, (7790), 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) [2023-11-19 07:59:26,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 183.0) internal successors, (16104), 88 states have internal predecessors, (16104), 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) [2023-11-19 07:59:26,946 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 183.0) internal successors, (16104), 88 states have internal predecessors, (16104), 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) [2023-11-19 07:59:26,947 INFO L175 Difference]: Start difference. First operand has 326 places, 1589 transitions, 31827 flow. Second operand 87 states and 7790 transitions. [2023-11-19 07:59:26,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 3023 transitions, 64438 flow [2023-11-19 07:59:35,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 3023 transitions, 61398 flow, removed 988 selfloop flow, removed 20 redundant places. [2023-11-19 07:59:35,348 INFO L231 Difference]: Finished difference. Result has 430 places, 2840 transitions, 62723 flow [2023-11-19 07:59:35,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=30310, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=62723, PETRI_PLACES=430, PETRI_TRANSITIONS=2840} [2023-11-19 07:59:35,350 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 411 predicate places. [2023-11-19 07:59:35,350 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 2840 transitions, 62723 flow [2023-11-19 07:59:35,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 85.25) internal successors, (2046), 24 states have internal predecessors, (2046), 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) [2023-11-19 07:59:35,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:35,351 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1] [2023-11-19 07:59:35,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:35,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:59:35,573 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread_function_dataraceErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-19 07:59:35,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:35,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1690789307, now seen corresponding path program 4 times [2023-11-19 07:59:35,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:35,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126419891] [2023-11-19 07:59:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:35,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:35,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126419891] [2023-11-19 07:59:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126419891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:35,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773223051] [2023-11-19 07:59:35,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:59:35,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:35,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:35,950 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:35,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9e4a4ef-b9ed-48aa-9c52-05a41e4b856f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:59:36,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:59:36,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:36,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:59:36,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:36,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:36,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773223051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:36,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:36,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2023-11-19 07:59:36,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704577927] [2023-11-19 07:59:36,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:36,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-19 07:59:36,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:36,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-19 07:59:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=595, Unknown=0, NotChecked=0, Total=870 [2023-11-19 07:59:36,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 183 [2023-11-19 07:59:36,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 2840 transitions, 62723 flow. Second operand has 30 states, 30 states have (on average 86.2) internal successors, (2586), 30 states have internal predecessors, (2586), 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) [2023-11-19 07:59:36,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:36,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 183 [2023-11-19 07:59:36,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand