./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:32,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:32,710 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:04:32,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:32,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:32,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:32,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:32,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:32,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:32,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:32,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:32,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:32,778 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:32,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:32,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:04:32,781 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:32,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:32,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:32,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:32,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:04:32,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:32,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:04:32,787 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:04:32,787 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:32,788 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:32,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:04:32,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:32,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:32,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:32,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:32,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:32,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:32,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:32,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:04:32,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:32,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:32,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:32,794 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:04:32,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:32,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:32,795 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:32,796 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_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 [2023-11-06 22:04:33,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:33,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:33,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:33,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:33,186 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:33,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2023-11-06 22:04:36,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:36,640 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:36,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2023-11-06 22:04:36,652 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/data/e98ef08bc/0881ed60c78d4625ad18c7c7ae70efc0/FLAG39b8da02e [2023-11-06 22:04:36,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/data/e98ef08bc/0881ed60c78d4625ad18c7c7ae70efc0 [2023-11-06 22:04:36,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:36,674 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:36,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:36,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:36,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:36,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:36" (1/1) ... [2023-11-06 22:04:36,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5856a22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:36, skipping insertion in model container [2023-11-06 22:04:36,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:36" (1/1) ... [2023-11-06 22:04:36,736 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:36,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:36,969 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:37,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:37,014 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:37,014 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:37,022 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:37,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37 WrapperNode [2023-11-06 22:04:37,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:37,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:37,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:37,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:37,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,090 INFO L138 Inliner]: procedures = 27, calls = 74, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 311 [2023-11-06 22:04:37,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:37,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:37,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:37,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:37,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:37,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:37,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:37,139 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:37,140 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (1/1) ... [2023-11-06 22:04:37,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:37,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:37,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:04:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:04:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:04:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:04:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:04:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:04:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:04:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:04:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:04:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:04:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:04:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:04:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:04:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:04:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:04:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:04:37,274 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:04:37,460 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:37,463 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:38,183 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:38,682 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:38,682 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:04:38,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:38 BoogieIcfgContainer [2023-11-06 22:04:38,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:38,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:38,694 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:38,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:38,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:36" (1/3) ... [2023-11-06 22:04:38,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbd504e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:38, skipping insertion in model container [2023-11-06 22:04:38,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:37" (2/3) ... [2023-11-06 22:04:38,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbd504e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:38, skipping insertion in model container [2023-11-06 22:04:38,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:38" (3/3) ... [2023-11-06 22:04:38,703 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-11-06 22:04:38,714 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:04:38,726 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:38,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-06 22:04:38,726 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:04:38,911 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-11-06 22:04:38,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 248 transitions, 536 flow [2023-11-06 22:04:39,124 INFO L124 PetriNetUnfolderBase]: 14/233 cut-off events. [2023-11-06 22:04:39,125 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:04:39,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 233 events. 14/233 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 324 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 194. Up to 3 conditions per place. [2023-11-06 22:04:39,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 248 transitions, 536 flow [2023-11-06 22:04:39,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 211 transitions, 449 flow [2023-11-06 22:04:39,166 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:04:39,188 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 211 transitions, 449 flow [2023-11-06 22:04:39,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 211 transitions, 449 flow [2023-11-06 22:04:39,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 211 transitions, 449 flow [2023-11-06 22:04:39,245 INFO L124 PetriNetUnfolderBase]: 13/211 cut-off events. [2023-11-06 22:04:39,245 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:04:39,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 211 events. 13/211 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 322 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 194. Up to 3 conditions per place. [2023-11-06 22:04:39,252 INFO L119 LiptonReduction]: Number of co-enabled transitions 5456 [2023-11-06 22:04:51,091 INFO L134 LiptonReduction]: Checked pairs total: 21656 [2023-11-06 22:04:51,091 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-11-06 22:04:51,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:51,115 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=LoopsAndPotentialCycles, 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;@1164d1e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:51,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-11-06 22:04:51,117 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:04:51,117 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:04:51,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:51,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:51,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:04:51,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:04:51,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1385, now seen corresponding path program 1 times [2023-11-06 22:04:51,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:51,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111872850] [2023-11-06 22:04:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:51,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:51,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111872850] [2023-11-06 22:04:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111872850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:51,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:51,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:04:51,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595671860] [2023-11-06 22:04:51,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:51,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:04:51,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:51,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:04:51,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:04:51,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 441 [2023-11-06 22:04:51,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 192.5) internal successors, (385), 2 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:51,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:51,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 441 [2023-11-06 22:04:51,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:54,485 INFO L124 PetriNetUnfolderBase]: 11217/15547 cut-off events. [2023-11-06 22:04:54,486 INFO L125 PetriNetUnfolderBase]: For 802/802 co-relation queries the response was YES. [2023-11-06 22:04:54,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31849 conditions, 15547 events. 11217/15547 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 83998 event pairs, 9848 based on Foata normal form. 0/7015 useless extension candidates. Maximal degree in co-relation 31748. Up to 15100 conditions per place. [2023-11-06 22:04:54,664 INFO L140 encePairwiseOnDemand]: 433/441 looper letters, 48 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-11-06 22:04:54,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 237 flow [2023-11-06 22:04:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:04:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:04:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 440 transitions. [2023-11-06 22:04:54,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988662131519274 [2023-11-06 22:04:54,691 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 440 transitions. [2023-11-06 22:04:54,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 440 transitions. [2023-11-06 22:04:54,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:54,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 440 transitions. [2023-11-06 22:04:54,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 220.0) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:54,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:54,720 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:54,722 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 157 flow. Second operand 2 states and 440 transitions. [2023-11-06 22:04:54,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 237 flow [2023-11-06 22:04:54,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:04:54,741 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 124 flow [2023-11-06 22:04:54,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-11-06 22:04:54,752 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2023-11-06 22:04:54,752 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 124 flow [2023-11-06 22:04:54,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 192.5) internal successors, (385), 2 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:54,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:54,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:04:54,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:04:54,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:04:54,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:54,756 INFO L85 PathProgramCache]: Analyzing trace with hash 44248, now seen corresponding path program 1 times [2023-11-06 22:04:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:54,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086129972] [2023-11-06 22:04:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:55,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086129972] [2023-11-06 22:04:55,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086129972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:55,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:04:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538557899] [2023-11-06 22:04:55,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:04:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:04:55,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:04:55,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 441 [2023-11-06 22:04:55,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:55,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:55,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 441 [2023-11-06 22:04:55,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:57,739 INFO L124 PetriNetUnfolderBase]: 11217/15546 cut-off events. [2023-11-06 22:04:57,740 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-06 22:04:57,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31234 conditions, 15546 events. 11217/15546 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 84010 event pairs, 9848 based on Foata normal form. 0/7015 useless extension candidates. Maximal degree in co-relation 31231. Up to 15096 conditions per place. [2023-11-06 22:04:57,837 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 45 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-06 22:04:57,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 216 flow [2023-11-06 22:04:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:04:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:04:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2023-11-06 22:04:57,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-11-06 22:04:57,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2023-11-06 22:04:57,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2023-11-06 22:04:57,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:57,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2023-11-06 22:04:57,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:57,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:57,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:57,851 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 124 flow. Second operand 3 states and 609 transitions. [2023-11-06 22:04:57,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 216 flow [2023-11-06 22:04:57,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:57,854 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 126 flow [2023-11-06 22:04:57,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-11-06 22:04:57,856 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-11-06 22:04:57,856 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 126 flow [2023-11-06 22:04:57,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:57,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:57,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:04:57,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:04:57,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:04:57,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash 44247, now seen corresponding path program 1 times [2023-11-06 22:04:57,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:57,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623543372] [2023-11-06 22:04:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:57,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:57,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623543372] [2023-11-06 22:04:57,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623543372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:57,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:57,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:04:57,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083931517] [2023-11-06 22:04:57,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:57,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:04:57,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:57,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:04:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:04:57,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 441 [2023-11-06 22:04:57,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:57,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:57,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 441 [2023-11-06 22:04:57,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:00,762 INFO L124 PetriNetUnfolderBase]: 11218/15548 cut-off events. [2023-11-06 22:05:00,763 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-06 22:05:00,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31242 conditions, 15548 events. 11218/15548 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 84052 event pairs, 9848 based on Foata normal form. 0/7018 useless extension candidates. Maximal degree in co-relation 31238. Up to 15100 conditions per place. [2023-11-06 22:05:00,859 INFO L140 encePairwiseOnDemand]: 437/441 looper letters, 46 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-11-06 22:05:00,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 230 flow [2023-11-06 22:05:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-11-06 22:05:00,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618291761148904 [2023-11-06 22:05:00,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-11-06 22:05:00,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-11-06 22:05:00,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:00,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-11-06 22:05:00,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:00,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:00,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:00,872 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 126 flow. Second operand 3 states and 611 transitions. [2023-11-06 22:05:00,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 230 flow [2023-11-06 22:05:00,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:00,875 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 141 flow [2023-11-06 22:05:00,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-11-06 22:05:00,876 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2023-11-06 22:05:00,876 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 141 flow [2023-11-06 22:05:00,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:00,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:00,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:05:00,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:05:00,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:00,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:00,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1372969, now seen corresponding path program 1 times [2023-11-06 22:05:00,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037547390] [2023-11-06 22:05:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:00,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:00,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037547390] [2023-11-06 22:05:00,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037547390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011943875] [2023-11-06 22:05:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:00,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:00,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:00,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:01,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:05:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:01,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:05:01,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:01,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:01,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011943875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:01,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:05:01,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-06 22:05:01,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488135915] [2023-11-06 22:05:01,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:01,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:05:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:01,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:05:01,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:05:01,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 441 [2023-11-06 22:05:01,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:01,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:01,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 441 [2023-11-06 22:05:01,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:03,798 INFO L124 PetriNetUnfolderBase]: 11221/15554 cut-off events. [2023-11-06 22:05:03,798 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-06 22:05:03,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31266 conditions, 15554 events. 11221/15554 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 84076 event pairs, 9848 based on Foata normal form. 0/7019 useless extension candidates. Maximal degree in co-relation 31261. Up to 15103 conditions per place. [2023-11-06 22:05:03,885 INFO L140 encePairwiseOnDemand]: 437/441 looper letters, 46 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2023-11-06 22:05:03,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 275 flow [2023-11-06 22:05:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:05:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:05:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2023-11-06 22:05:03,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459561602418745 [2023-11-06 22:05:03,891 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1180 transitions. [2023-11-06 22:05:03,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1180 transitions. [2023-11-06 22:05:03,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:03,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1180 transitions. [2023-11-06 22:05:03,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.66666666666666) internal successors, (1180), 6 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:03,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:03,906 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 441.0) internal successors, (3087), 7 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:03,906 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 141 flow. Second operand 6 states and 1180 transitions. [2023-11-06 22:05:03,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 275 flow [2023-11-06 22:05:03,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 270 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:05:03,910 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 197 flow [2023-11-06 22:05:03,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2023-11-06 22:05:03,911 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-11-06 22:05:03,911 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 197 flow [2023-11-06 22:05:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:03,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:03,913 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:05:03,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:05:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:04,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:04,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2046250665, now seen corresponding path program 2 times [2023-11-06 22:05:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615251060] [2023-11-06 22:05:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:04,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615251060] [2023-11-06 22:05:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615251060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:04,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110654421] [2023-11-06 22:05:04,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:05:04,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:04,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:04,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:04,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:05:04,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:05:04,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:05:04,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:05:04,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:05:04,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:04,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110654421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:04,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:05:04,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:05:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068066134] [2023-11-06 22:05:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:04,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:04,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:04,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:05:04,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 441 [2023-11-06 22:05:04,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:04,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:04,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 441 [2023-11-06 22:05:04,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:06,647 INFO L124 PetriNetUnfolderBase]: 11221/15553 cut-off events. [2023-11-06 22:05:06,647 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-06 22:05:06,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31280 conditions, 15553 events. 11221/15553 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 84077 event pairs, 9848 based on Foata normal form. 1/7023 useless extension candidates. Maximal degree in co-relation 31272. Up to 15100 conditions per place. [2023-11-06 22:05:06,747 INFO L140 encePairwiseOnDemand]: 438/441 looper letters, 48 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2023-11-06 22:05:06,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 295 flow [2023-11-06 22:05:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2023-11-06 22:05:06,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46409674981103555 [2023-11-06 22:05:06,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 614 transitions. [2023-11-06 22:05:06,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 614 transitions. [2023-11-06 22:05:06,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:06,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 614 transitions. [2023-11-06 22:05:06,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:06,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:06,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:06,760 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 197 flow. Second operand 3 states and 614 transitions. [2023-11-06 22:05:06,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 295 flow [2023-11-06 22:05:06,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 258 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-06 22:05:06,765 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 162 flow [2023-11-06 22:05:06,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2023-11-06 22:05:06,768 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2023-11-06 22:05:06,768 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 162 flow [2023-11-06 22:05:06,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:06,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:06,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:06,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:05:06,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:06,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:06,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1885059935, now seen corresponding path program 1 times [2023-11-06 22:05:06,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:06,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052846455] [2023-11-06 22:05:06,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:06,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:07,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052846455] [2023-11-06 22:05:07,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052846455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:07,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:07,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:07,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014073123] [2023-11-06 22:05:07,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:07,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:07,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:07,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:07,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 441 [2023-11-06 22:05:07,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:07,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:07,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 441 [2023-11-06 22:05:07,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:09,541 INFO L124 PetriNetUnfolderBase]: 12123/16483 cut-off events. [2023-11-06 22:05:09,542 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-11-06 22:05:09,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33505 conditions, 16483 events. 12123/16483 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 88635 event pairs, 7083 based on Foata normal form. 0/7552 useless extension candidates. Maximal degree in co-relation 33500. Up to 15257 conditions per place. [2023-11-06 22:05:09,639 INFO L140 encePairwiseOnDemand]: 434/441 looper letters, 77 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-11-06 22:05:09,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 382 flow [2023-11-06 22:05:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:09,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-11-06 22:05:09,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48828420256991684 [2023-11-06 22:05:09,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-11-06 22:05:09,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-11-06 22:05:09,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:09,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-11-06 22:05:09,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:09,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:09,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:09,677 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 162 flow. Second operand 3 states and 646 transitions. [2023-11-06 22:05:09,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 382 flow [2023-11-06 22:05:09,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:09,683 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 175 flow [2023-11-06 22:05:09,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-11-06 22:05:09,685 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-11-06 22:05:09,685 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 175 flow [2023-11-06 22:05:09,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:09,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:09,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:09,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:05:09,686 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:09,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2114116472, now seen corresponding path program 1 times [2023-11-06 22:05:09,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:09,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825334591] [2023-11-06 22:05:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:09,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:09,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825334591] [2023-11-06 22:05:09,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825334591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:09,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:09,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:09,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370409525] [2023-11-06 22:05:09,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:09,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:09,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:09,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:09,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 441 [2023-11-06 22:05:09,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:09,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:09,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 441 [2023-11-06 22:05:09,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:12,731 INFO L124 PetriNetUnfolderBase]: 16277/21849 cut-off events. [2023-11-06 22:05:12,731 INFO L125 PetriNetUnfolderBase]: For 1306/1306 co-relation queries the response was YES. [2023-11-06 22:05:12,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47272 conditions, 21849 events. 16277/21849 cut-off events. For 1306/1306 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 116007 event pairs, 10276 based on Foata normal form. 0/10790 useless extension candidates. Maximal degree in co-relation 47266. Up to 18034 conditions per place. [2023-11-06 22:05:12,855 INFO L140 encePairwiseOnDemand]: 433/441 looper letters, 89 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2023-11-06 22:05:12,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 104 transitions, 471 flow [2023-11-06 22:05:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2023-11-06 22:05:12,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950869236583522 [2023-11-06 22:05:12,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 655 transitions. [2023-11-06 22:05:12,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 655 transitions. [2023-11-06 22:05:12,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:12,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 655 transitions. [2023-11-06 22:05:12,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:12,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:12,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:12,866 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 175 flow. Second operand 3 states and 655 transitions. [2023-11-06 22:05:12,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 104 transitions, 471 flow [2023-11-06 22:05:12,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 104 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:05:12,877 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 214 flow [2023-11-06 22:05:12,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2023-11-06 22:05:12,878 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-11-06 22:05:12,878 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 214 flow [2023-11-06 22:05:12,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:12,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:12,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:12,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:05:12,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:12,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:12,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1692683030, now seen corresponding path program 1 times [2023-11-06 22:05:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:12,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698404291] [2023-11-06 22:05:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:12,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:12,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698404291] [2023-11-06 22:05:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698404291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:12,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:05:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146961314] [2023-11-06 22:05:12,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:12,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:13,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 441 [2023-11-06 22:05:13,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:13,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:13,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 441 [2023-11-06 22:05:13,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:15,825 INFO L124 PetriNetUnfolderBase]: 17245/23458 cut-off events. [2023-11-06 22:05:15,825 INFO L125 PetriNetUnfolderBase]: For 3699/3699 co-relation queries the response was YES. [2023-11-06 22:05:15,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58370 conditions, 23458 events. 17245/23458 cut-off events. For 3699/3699 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 125863 event pairs, 13134 based on Foata normal form. 242/13100 useless extension candidates. Maximal degree in co-relation 58363. Up to 21342 conditions per place. [2023-11-06 22:05:15,961 INFO L140 encePairwiseOnDemand]: 434/441 looper letters, 102 selfloop transitions, 4 changer transitions 2/117 dead transitions. [2023-11-06 22:05:15,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 117 transitions, 598 flow [2023-11-06 22:05:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:05:15,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 989 transitions. [2023-11-06 22:05:15,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485260770975057 [2023-11-06 22:05:15,967 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 989 transitions. [2023-11-06 22:05:15,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 989 transitions. [2023-11-06 22:05:15,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:15,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 989 transitions. [2023-11-06 22:05:15,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:15,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 441.0) internal successors, (2646), 6 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:15,979 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 441.0) internal successors, (2646), 6 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:15,979 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 214 flow. Second operand 5 states and 989 transitions. [2023-11-06 22:05:15,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 117 transitions, 598 flow [2023-11-06 22:05:15,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:05:15,992 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 233 flow [2023-11-06 22:05:15,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2023-11-06 22:05:15,993 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-06 22:05:15,993 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 233 flow [2023-11-06 22:05:15,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:15,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:15,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:15,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:05:15,995 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:15,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2114116473, now seen corresponding path program 1 times [2023-11-06 22:05:15,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:15,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021476638] [2023-11-06 22:05:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:15,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:16,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:16,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021476638] [2023-11-06 22:05:16,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021476638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:16,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:16,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:16,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138591969] [2023-11-06 22:05:16,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:16,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:16,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:16,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 441 [2023-11-06 22:05:16,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:16,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:16,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 441 [2023-11-06 22:05:16,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:18,803 INFO L124 PetriNetUnfolderBase]: 18023/25060 cut-off events. [2023-11-06 22:05:18,803 INFO L125 PetriNetUnfolderBase]: For 5738/5738 co-relation queries the response was YES. [2023-11-06 22:05:18,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60267 conditions, 25060 events. 18023/25060 cut-off events. For 5738/5738 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 148701 event pairs, 10849 based on Foata normal form. 0/14695 useless extension candidates. Maximal degree in co-relation 60258. Up to 17351 conditions per place. [2023-11-06 22:05:19,200 INFO L140 encePairwiseOnDemand]: 437/441 looper letters, 93 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-11-06 22:05:19,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 104 transitions, 522 flow [2023-11-06 22:05:19,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-11-06 22:05:19,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935752078609221 [2023-11-06 22:05:19,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-11-06 22:05:19,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-11-06 22:05:19,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:19,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-11-06 22:05:19,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:19,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:19,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:19,212 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 233 flow. Second operand 3 states and 653 transitions. [2023-11-06 22:05:19,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 104 transitions, 522 flow [2023-11-06 22:05:19,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:19,218 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 224 flow [2023-11-06 22:05:19,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-11-06 22:05:19,221 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-06 22:05:19,221 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 224 flow [2023-11-06 22:05:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:19,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:19,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:05:19,222 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:19,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2114116469, now seen corresponding path program 1 times [2023-11-06 22:05:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249571845] [2023-11-06 22:05:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:19,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:19,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249571845] [2023-11-06 22:05:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249571845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:19,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:19,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:05:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513972906] [2023-11-06 22:05:19,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:19,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:19,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 441 [2023-11-06 22:05:19,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:19,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:19,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 441 [2023-11-06 22:05:19,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:22,300 INFO L124 PetriNetUnfolderBase]: 17301/24122 cut-off events. [2023-11-06 22:05:22,301 INFO L125 PetriNetUnfolderBase]: For 7931/7931 co-relation queries the response was YES. [2023-11-06 22:05:22,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58695 conditions, 24122 events. 17301/24122 cut-off events. For 7931/7931 co-relation queries the response was YES. Maximal size of possible extension queue 1529. Compared 139289 event pairs, 14723 based on Foata normal form. 76/14660 useless extension candidates. Maximal degree in co-relation 58686. Up to 22964 conditions per place. [2023-11-06 22:05:22,442 INFO L140 encePairwiseOnDemand]: 434/441 looper letters, 56 selfloop transitions, 2 changer transitions 36/103 dead transitions. [2023-11-06 22:05:22,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 103 transitions, 507 flow [2023-11-06 22:05:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:05:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:05:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 986 transitions. [2023-11-06 22:05:22,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471655328798186 [2023-11-06 22:05:22,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 986 transitions. [2023-11-06 22:05:22,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 986 transitions. [2023-11-06 22:05:22,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:22,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 986 transitions. [2023-11-06 22:05:22,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.2) internal successors, (986), 5 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:22,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 441.0) internal successors, (2646), 6 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:22,457 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 441.0) internal successors, (2646), 6 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:22,457 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 224 flow. Second operand 5 states and 986 transitions. [2023-11-06 22:05:22,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 103 transitions, 507 flow [2023-11-06 22:05:22,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 103 transitions, 501 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:22,464 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 218 flow [2023-11-06 22:05:22,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2023-11-06 22:05:22,465 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-11-06 22:05:22,465 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 218 flow [2023-11-06 22:05:22,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:22,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:22,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:22,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:05:22,466 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:22,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash -607224327, now seen corresponding path program 1 times [2023-11-06 22:05:22,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:22,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960906281] [2023-11-06 22:05:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:22,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:22,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960906281] [2023-11-06 22:05:22,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960906281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472853917] [2023-11-06 22:05:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:22,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:22,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:22,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:22,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:05:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:22,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:05:22,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:22,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:22,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472853917] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:22,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:05:22,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-06 22:05:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849969160] [2023-11-06 22:05:22,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:22,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:05:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:05:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:05:23,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 441 [2023-11-06 22:05:23,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 179.5) internal successors, (2154), 12 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:23,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:23,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 441 [2023-11-06 22:05:23,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:26,249 INFO L124 PetriNetUnfolderBase]: 18956/26055 cut-off events. [2023-11-06 22:05:26,250 INFO L125 PetriNetUnfolderBase]: For 8731/8731 co-relation queries the response was YES. [2023-11-06 22:05:26,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64631 conditions, 26055 events. 18956/26055 cut-off events. For 8731/8731 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 149500 event pairs, 11521 based on Foata normal form. 348/15917 useless extension candidates. Maximal degree in co-relation 64620. Up to 17186 conditions per place. [2023-11-06 22:05:26,410 INFO L140 encePairwiseOnDemand]: 431/441 looper letters, 137 selfloop transitions, 6 changer transitions 15/167 dead transitions. [2023-11-06 22:05:26,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 167 transitions, 826 flow [2023-11-06 22:05:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:05:26,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:05:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1396 transitions. [2023-11-06 22:05:26,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45221898283122774 [2023-11-06 22:05:26,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1396 transitions. [2023-11-06 22:05:26,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1396 transitions. [2023-11-06 22:05:26,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:26,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1396 transitions. [2023-11-06 22:05:26,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.42857142857142) internal successors, (1396), 7 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:26,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 441.0) internal successors, (3528), 8 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:26,429 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 441.0) internal successors, (3528), 8 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:26,429 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 218 flow. Second operand 7 states and 1396 transitions. [2023-11-06 22:05:26,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 167 transitions, 826 flow [2023-11-06 22:05:26,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 167 transitions, 812 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 22:05:26,526 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 248 flow [2023-11-06 22:05:26,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=248, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-11-06 22:05:26,527 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2023-11-06 22:05:26,527 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 248 flow [2023-11-06 22:05:26,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 179.5) internal successors, (2154), 12 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:26,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:26,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:26,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:26,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:05:26,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:26,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:26,734 INFO L85 PathProgramCache]: Analyzing trace with hash -185790885, now seen corresponding path program 1 times [2023-11-06 22:05:26,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:26,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909951014] [2023-11-06 22:05:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:26,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:26,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909951014] [2023-11-06 22:05:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909951014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655936708] [2023-11-06 22:05:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:26,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:26,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:26,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:26,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:05:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:27,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:05:27,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:27,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:27,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655936708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:27,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:05:27,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 22:05:27,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022037240] [2023-11-06 22:05:27,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:27,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:05:27,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:27,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:05:27,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:05:27,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 441 [2023-11-06 22:05:27,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 248 flow. Second operand has 12 states, 12 states have (on average 179.66666666666666) internal successors, (2156), 12 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:27,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:27,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 441 [2023-11-06 22:05:27,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:29,984 INFO L124 PetriNetUnfolderBase]: 15198/21113 cut-off events. [2023-11-06 22:05:29,984 INFO L125 PetriNetUnfolderBase]: For 12787/12787 co-relation queries the response was YES. [2023-11-06 22:05:30,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55764 conditions, 21113 events. 15198/21113 cut-off events. For 12787/12787 co-relation queries the response was YES. Maximal size of possible extension queue 1266. Compared 119518 event pairs, 8977 based on Foata normal form. 448/13653 useless extension candidates. Maximal degree in co-relation 55753. Up to 14571 conditions per place. [2023-11-06 22:05:30,113 INFO L140 encePairwiseOnDemand]: 429/441 looper letters, 82 selfloop transitions, 5 changer transitions 26/122 dead transitions. [2023-11-06 22:05:30,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 644 flow [2023-11-06 22:05:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:05:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:05:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1355 transitions. [2023-11-06 22:05:30,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43893747975380626 [2023-11-06 22:05:30,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1355 transitions. [2023-11-06 22:05:30,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1355 transitions. [2023-11-06 22:05:30,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:30,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1355 transitions. [2023-11-06 22:05:30,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.57142857142858) internal successors, (1355), 7 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:30,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 441.0) internal successors, (3528), 8 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:30,131 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 441.0) internal successors, (3528), 8 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:30,131 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 248 flow. Second operand 7 states and 1355 transitions. [2023-11-06 22:05:30,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 644 flow [2023-11-06 22:05:30,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 639 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:30,143 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 271 flow [2023-11-06 22:05:30,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2023-11-06 22:05:30,144 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2023-11-06 22:05:30,144 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 271 flow [2023-11-06 22:05:30,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 179.66666666666666) internal successors, (2156), 12 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:30,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:30,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:30,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:30,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:05:30,357 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:30,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:30,358 INFO L85 PathProgramCache]: Analyzing trace with hash -924713993, now seen corresponding path program 1 times [2023-11-06 22:05:30,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:30,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285752839] [2023-11-06 22:05:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:30,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:30,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285752839] [2023-11-06 22:05:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285752839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:30,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77464841] [2023-11-06 22:05:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:30,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:30,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:30,521 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:30,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:05:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:30,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:05:30,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:30,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77464841] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:30,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:05:30,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-06 22:05:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121298761] [2023-11-06 22:05:30,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:05:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:30,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:05:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:05:31,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 441 [2023-11-06 22:05:31,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 271 flow. Second operand has 17 states, 17 states have (on average 179.35294117647058) internal successors, (3049), 17 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:31,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:31,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 441 [2023-11-06 22:05:31,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:35,995 INFO L124 PetriNetUnfolderBase]: 22283/30734 cut-off events. [2023-11-06 22:05:35,996 INFO L125 PetriNetUnfolderBase]: For 28533/28533 co-relation queries the response was YES. [2023-11-06 22:05:36,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88156 conditions, 30734 events. 22283/30734 cut-off events. For 28533/28533 co-relation queries the response was YES. Maximal size of possible extension queue 1703. Compared 185045 event pairs, 11085 based on Foata normal form. 1176/20362 useless extension candidates. Maximal degree in co-relation 88141. Up to 16784 conditions per place. [2023-11-06 22:05:36,195 INFO L140 encePairwiseOnDemand]: 427/441 looper letters, 210 selfloop transitions, 11 changer transitions 14/244 dead transitions. [2023-11-06 22:05:36,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 244 transitions, 1419 flow [2023-11-06 22:05:36,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:05:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:05:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2001 transitions. [2023-11-06 22:05:36,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45374149659863944 [2023-11-06 22:05:36,203 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2001 transitions. [2023-11-06 22:05:36,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2001 transitions. [2023-11-06 22:05:36,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:36,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2001 transitions. [2023-11-06 22:05:36,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 200.1) internal successors, (2001), 10 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:36,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 441.0) internal successors, (4851), 11 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:36,219 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 441.0) internal successors, (4851), 11 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:36,219 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 271 flow. Second operand 10 states and 2001 transitions. [2023-11-06 22:05:36,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 244 transitions, 1419 flow [2023-11-06 22:05:36,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 244 transitions, 1369 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-11-06 22:05:36,584 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 358 flow [2023-11-06 22:05:36,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-11-06 22:05:36,585 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2023-11-06 22:05:36,585 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 358 flow [2023-11-06 22:05:36,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 179.35294117647058) internal successors, (3049), 17 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:36,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:36,586 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:36,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:05:36,792 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:36,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1138208181, now seen corresponding path program 2 times [2023-11-06 22:05:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:36,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866554146] [2023-11-06 22:05:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:37,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866554146] [2023-11-06 22:05:37,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866554146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:37,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411204326] [2023-11-06 22:05:37,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:05:37,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:37,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:37,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:37,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:05:37,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:05:37,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:05:37,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:05:37,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:37,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-06 22:05:37,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:37,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:05:37,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:05:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:37,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:37,866 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_243 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_243) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2023-11-06 22:05:37,887 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_243 (Array Int Int)) (v_ArrVal_242 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_242) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_243) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-11-06 22:05:37,899 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:05:37,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-06 22:05:37,910 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:05:37,911 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-11-06 22:05:37,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-06 22:05:37,957 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-11-06 22:05:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-06 22:05:37,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411204326] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:37,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:05:37,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:05:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155657956] [2023-11-06 22:05:37,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:37,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:05:37,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:37,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:05:37,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=105, Unknown=2, NotChecked=42, Total=182 [2023-11-06 22:05:38,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 441 [2023-11-06 22:05:38,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 358 flow. Second operand has 14 states, 14 states have (on average 159.42857142857142) internal successors, (2232), 14 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:38,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:38,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 441 [2023-11-06 22:05:38,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:43,205 INFO L124 PetriNetUnfolderBase]: 25287/35040 cut-off events. [2023-11-06 22:05:43,206 INFO L125 PetriNetUnfolderBase]: For 53741/53741 co-relation queries the response was YES. [2023-11-06 22:05:43,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111455 conditions, 35040 events. 25287/35040 cut-off events. For 53741/53741 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 204918 event pairs, 11418 based on Foata normal form. 0/22262 useless extension candidates. Maximal degree in co-relation 111438. Up to 34279 conditions per place. [2023-11-06 22:05:43,470 INFO L140 encePairwiseOnDemand]: 433/441 looper letters, 79 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2023-11-06 22:05:43,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 98 transitions, 686 flow [2023-11-06 22:05:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:05:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:05:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1178 transitions. [2023-11-06 22:05:43,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38160025915127954 [2023-11-06 22:05:43,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1178 transitions. [2023-11-06 22:05:43,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1178 transitions. [2023-11-06 22:05:43,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:43,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1178 transitions. [2023-11-06 22:05:43,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.28571428571428) internal successors, (1178), 7 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:43,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 441.0) internal successors, (3528), 8 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:43,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 441.0) internal successors, (3528), 8 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:43,486 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 358 flow. Second operand 7 states and 1178 transitions. [2023-11-06 22:05:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 98 transitions, 686 flow [2023-11-06 22:05:43,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 98 transitions, 639 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-06 22:05:43,856 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 428 flow [2023-11-06 22:05:43,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-11-06 22:05:43,857 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-11-06 22:05:43,857 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 428 flow [2023-11-06 22:05:43,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.42857142857142) internal successors, (2232), 14 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:43,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:43,858 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:43,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:44,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:05:44,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:44,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:44,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1138208182, now seen corresponding path program 1 times [2023-11-06 22:05:44,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:44,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672953237] [2023-11-06 22:05:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:44,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:44,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672953237] [2023-11-06 22:05:44,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672953237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:44,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348203798] [2023-11-06 22:05:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:44,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:44,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:44,816 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:44,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:05:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:44,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:05:44,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:45,054 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:45,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:45,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:05:45,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:45,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:05:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:45,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:45,219 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_274 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_274) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 4294967296)) is different from false [2023-11-06 22:05:45,276 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:05:45,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-06 22:05:45,292 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:05:45,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-11-06 22:05:45,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-11-06 22:05:45,333 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-11-06 22:05:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348203798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:45,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:05:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-06 22:05:45,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86573444] [2023-11-06 22:05:45,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:05:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:05:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=224, Unknown=1, NotChecked=30, Total=306 [2023-11-06 22:05:45,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 441 [2023-11-06 22:05:45,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 428 flow. Second operand has 18 states, 18 states have (on average 159.5) internal successors, (2871), 18 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:45,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:45,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 441 [2023-11-06 22:05:45,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:51,590 INFO L124 PetriNetUnfolderBase]: 25277/35018 cut-off events. [2023-11-06 22:05:51,590 INFO L125 PetriNetUnfolderBase]: For 45572/45572 co-relation queries the response was YES. [2023-11-06 22:05:51,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109343 conditions, 35018 events. 25277/35018 cut-off events. For 45572/45572 co-relation queries the response was YES. Maximal size of possible extension queue 1559. Compared 204772 event pairs, 12260 based on Foata normal form. 4/22663 useless extension candidates. Maximal degree in co-relation 109325. Up to 34277 conditions per place. [2023-11-06 22:05:51,814 INFO L140 encePairwiseOnDemand]: 434/441 looper letters, 79 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2023-11-06 22:05:51,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 674 flow [2023-11-06 22:05:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:05:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:05:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1177 transitions. [2023-11-06 22:05:51,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38127632005183026 [2023-11-06 22:05:51,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1177 transitions. [2023-11-06 22:05:51,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1177 transitions. [2023-11-06 22:05:51,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:51,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1177 transitions. [2023-11-06 22:05:51,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:51,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 441.0) internal successors, (3528), 8 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:51,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 441.0) internal successors, (3528), 8 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:51,829 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 428 flow. Second operand 7 states and 1177 transitions. [2023-11-06 22:05:51,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 674 flow [2023-11-06 22:05:52,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 667 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:05:52,012 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 423 flow [2023-11-06 22:05:52,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2023-11-06 22:05:52,013 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2023-11-06 22:05:52,013 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 423 flow [2023-11-06 22:05:52,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 159.5) internal successors, (2871), 18 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:52,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:52,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:52,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:05:52,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:05:52,221 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:52,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash -716774739, now seen corresponding path program 2 times [2023-11-06 22:05:52,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:52,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366485110] [2023-11-06 22:05:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:52,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:05:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366485110] [2023-11-06 22:05:52,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366485110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:52,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:52,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666193972] [2023-11-06 22:05:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:52,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:52,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:52,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:52,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:52,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 441 [2023-11-06 22:05:52,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:52,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:52,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 441 [2023-11-06 22:05:52,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:58,444 INFO L124 PetriNetUnfolderBase]: 30696/42579 cut-off events. [2023-11-06 22:05:58,444 INFO L125 PetriNetUnfolderBase]: For 57535/57535 co-relation queries the response was YES. [2023-11-06 22:05:58,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132446 conditions, 42579 events. 30696/42579 cut-off events. For 57535/57535 co-relation queries the response was YES. Maximal size of possible extension queue 1908. Compared 268643 event pairs, 15370 based on Foata normal form. 0/27286 useless extension candidates. Maximal degree in co-relation 132428. Up to 28843 conditions per place. [2023-11-06 22:05:58,754 INFO L140 encePairwiseOnDemand]: 434/441 looper letters, 117 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2023-11-06 22:05:58,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 130 transitions, 964 flow [2023-11-06 22:05:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:58,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2023-11-06 22:05:58,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4958427815570673 [2023-11-06 22:05:58,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2023-11-06 22:05:58,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2023-11-06 22:05:58,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:58,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2023-11-06 22:05:58,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:58,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:58,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 441.0) internal successors, (1764), 4 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:58,761 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 423 flow. Second operand 3 states and 656 transitions. [2023-11-06 22:05:58,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 130 transitions, 964 flow [2023-11-06 22:05:58,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 130 transitions, 932 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:05:58,854 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 424 flow [2023-11-06 22:05:58,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=441, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-11-06 22:05:58,854 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-11-06 22:05:58,855 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 424 flow [2023-11-06 22:05:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:58,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:58,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:58,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:05:58,856 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-06 22:05:58,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash -716774742, now seen corresponding path program 1 times [2023-11-06 22:05:58,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:58,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12173867] [2023-11-06 22:05:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:58,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:59,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:59,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12173867] [2023-11-06 22:05:59,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12173867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:05:59,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977844730] [2023-11-06 22:05:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:59,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:59,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:59,512 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:59,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1d4afe0-ce25-4f12-83c6-fc0f7c9db378/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:05:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:59,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-06 22:05:59,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:59,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:05:59,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:59,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:05:59,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:59,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:05:59,903 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-06 22:05:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:59,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:00,133 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:06:00,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-06 22:06:00,146 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:06:00,146 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-11-06 22:06:00,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-06 22:06:00,166 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-06 22:06:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977844730] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:00,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:06:00,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-06 22:06:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239733087] [2023-11-06 22:06:00,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:00,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:06:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:06:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=317, Unknown=6, NotChecked=0, Total=380 [2023-11-06 22:06:00,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 441 [2023-11-06 22:06:00,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 424 flow. Second operand has 20 states, 20 states have (on average 155.3) internal successors, (3106), 20 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:00,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:00,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 441 [2023-11-06 22:06:00,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand