./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/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_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/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_e7087c5e-3bc5-43fe-a8de-11ccaff24584/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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:47:04,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:47:04,172 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:47:04,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:47:04,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:47:04,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:47:04,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:47:04,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:47:04,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:47:04,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:47:04,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:47:04,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:47:04,216 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:47:04,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:47:04,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:47:04,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:47:04,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:47:04,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:47:04,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:47:04,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:47:04,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:47:04,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:47:04,224 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:47:04,225 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:47:04,225 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:47:04,226 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:47:04,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:47:04,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:47:04,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:47:04,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:47:04,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:04,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:47:04,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:47:04,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:47:04,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:47:04,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:47:04,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:47:04,232 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:47:04,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:47:04,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:47:04,233 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:47:04,233 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_e7087c5e-3bc5-43fe-a8de-11ccaff24584/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2023-11-06 22:47:04,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:47:04,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:47:04,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:47:04,608 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:47:04,609 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:47:04,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2023-11-06 22:47:07,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:47:08,063 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:47:08,064 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2023-11-06 22:47:08,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/data/ff5242210/c2ac42900d764a0c8ea8bb5f9fd9fa5e/FLAG67f998def [2023-11-06 22:47:08,088 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/data/ff5242210/c2ac42900d764a0c8ea8bb5f9fd9fa5e [2023-11-06 22:47:08,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:47:08,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:47:08,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:08,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:47:08,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:47:08,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246b1da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08, skipping insertion in model container [2023-11-06 22:47:08,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:47:08,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:08,385 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:47:08,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:08,419 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:47:08,420 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:47:08,428 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:47:08,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08 WrapperNode [2023-11-06 22:47:08,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:08,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:08,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:47:08,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:47:08,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,470 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-11-06 22:47:08,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:08,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:47:08,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:47:08,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:47:08,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:47:08,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:47:08,506 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:47:08,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:47:08,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (1/1) ... [2023-11-06 22:47:08,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:08,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:47:08,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:47:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:47:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:47:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:47:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:47:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:47:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:47:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:47:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:47:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:47:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:47:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:47:08,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:47:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:47:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:47:08,612 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 22:47:08,719 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:47:08,721 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:47:08,978 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:47:09,046 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:47:09,047 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:47:09,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:09 BoogieIcfgContainer [2023-11-06 22:47:09,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:47:09,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:47:09,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:47:09,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:47:09,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:47:08" (1/3) ... [2023-11-06 22:47:09,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd637cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:09, skipping insertion in model container [2023-11-06 22:47:09,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:08" (2/3) ... [2023-11-06 22:47:09,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd637cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:09, skipping insertion in model container [2023-11-06 22:47:09,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:09" (3/3) ... [2023-11-06 22:47:09,060 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-11-06 22:47:09,070 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:47:09,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:47:09,085 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:47:09,085 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:47:09,166 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:47:09,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 103 transitions, 220 flow [2023-11-06 22:47:09,298 INFO L124 PetriNetUnfolderBase]: 11/101 cut-off events. [2023-11-06 22:47:09,299 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:47:09,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 11/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 154 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-11-06 22:47:09,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 103 transitions, 220 flow [2023-11-06 22:47:09,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 79 transitions, 167 flow [2023-11-06 22:47:09,325 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:47:09,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 79 transitions, 167 flow [2023-11-06 22:47:09,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 79 transitions, 167 flow [2023-11-06 22:47:09,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 79 transitions, 167 flow [2023-11-06 22:47:09,405 INFO L124 PetriNetUnfolderBase]: 10/79 cut-off events. [2023-11-06 22:47:09,407 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:47:09,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 79 events. 10/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-11-06 22:47:09,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 1628 [2023-11-06 22:47:13,475 INFO L134 LiptonReduction]: Checked pairs total: 1682 [2023-11-06 22:47:13,476 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-11-06 22:47:13,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:13,511 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;@6f7b8dac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:13,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-06 22:47:13,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:47:13,516 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-11-06 22:47:13,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:47:13,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:13,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:47:13,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:13,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash 438128, now seen corresponding path program 1 times [2023-11-06 22:47:13,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:13,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731151576] [2023-11-06 22:47:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:13,812 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 22:47:13,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:13,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731151576] [2023-11-06 22:47:13,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731151576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:13,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:13,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:47:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324871638] [2023-11-06 22:47:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:13,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:13,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:13,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:13,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 187 [2023-11-06 22:47:13,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 22:47:13,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:13,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 187 [2023-11-06 22:47:13,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:14,052 INFO L124 PetriNetUnfolderBase]: 153/266 cut-off events. [2023-11-06 22:47:14,052 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-06 22:47:14,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 266 events. 153/266 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1038 event pairs, 57 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 480. Up to 241 conditions per place. [2023-11-06 22:47:14,059 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-11-06 22:47:14,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 127 flow [2023-11-06 22:47:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-11-06 22:47:14,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026737967914439 [2023-11-06 22:47:14,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-11-06 22:47:14,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-11-06 22:47:14,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:14,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-11-06 22:47:14,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:14,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:14,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:14,109 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 47 flow. Second operand 3 states and 282 transitions. [2023-11-06 22:47:14,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 127 flow [2023-11-06 22:47:14,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:47:14,116 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 75 flow [2023-11-06 22:47:14,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2023-11-06 22:47:14,123 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2023-11-06 22:47:14,123 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 75 flow [2023-11-06 22:47:14,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 22:47:14,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:14,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:47:14,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:47:14,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:14,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash 13583430, now seen corresponding path program 1 times [2023-11-06 22:47:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:14,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352855420] [2023-11-06 22:47:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:14,327 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 22:47:14,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352855420] [2023-11-06 22:47:14,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352855420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846173238] [2023-11-06 22:47:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:14,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:14,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:47:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:14,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:47:14,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:14,754 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 22:47:14,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:14,833 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 22:47:14,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846173238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:14,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:14,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-06 22:47:14,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362492984] [2023-11-06 22:47:14,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:14,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:47:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:47:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:47:14,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 187 [2023-11-06 22:47:14,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 75 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 22:47:14,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:14,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 187 [2023-11-06 22:47:14,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:15,286 INFO L124 PetriNetUnfolderBase]: 336/571 cut-off events. [2023-11-06 22:47:15,287 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-06 22:47:15,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 571 events. 336/571 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2608 event pairs, 15 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 1160. Up to 329 conditions per place. [2023-11-06 22:47:15,295 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 67 selfloop transitions, 35 changer transitions 0/102 dead transitions. [2023-11-06 22:47:15,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 102 transitions, 532 flow [2023-11-06 22:47:15,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:47:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:47:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 874 transitions. [2023-11-06 22:47:15,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46737967914438505 [2023-11-06 22:47:15,301 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 874 transitions. [2023-11-06 22:47:15,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 874 transitions. [2023-11-06 22:47:15,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:15,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 874 transitions. [2023-11-06 22:47:15,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states 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 22:47:15,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 187.0) internal successors, (2057), 11 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states 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 22:47:15,313 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 187.0) internal successors, (2057), 11 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states 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 22:47:15,313 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 75 flow. Second operand 10 states and 874 transitions. [2023-11-06 22:47:15,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 102 transitions, 532 flow [2023-11-06 22:47:15,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 102 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:47:15,318 INFO L231 Difference]: Finished difference. Result has 38 places, 56 transitions, 391 flow [2023-11-06 22:47:15,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=391, PETRI_PLACES=38, PETRI_TRANSITIONS=56} [2023-11-06 22:47:15,319 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-11-06 22:47:15,320 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 56 transitions, 391 flow [2023-11-06 22:47:15,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 22:47:15,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:15,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:47:15,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:15,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:15,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash 13583431, now seen corresponding path program 1 times [2023-11-06 22:47:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:15,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958995224] [2023-11-06 22:47:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,647 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 22:47:15,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958995224] [2023-11-06 22:47:15,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958995224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:15,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591355242] [2023-11-06 22:47:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:15,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:15,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:15,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:15,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:47:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:47:15,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:15,948 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 22:47:15,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:16,195 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 22:47:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591355242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:16,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:16,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-06 22:47:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278299252] [2023-11-06 22:47:16,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:16,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:47:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:47:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:47:16,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 187 [2023-11-06 22:47:16,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 56 transitions, 391 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 22:47:16,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:16,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 187 [2023-11-06 22:47:16,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:16,608 INFO L124 PetriNetUnfolderBase]: 391/674 cut-off events. [2023-11-06 22:47:16,608 INFO L125 PetriNetUnfolderBase]: For 964/964 co-relation queries the response was YES. [2023-11-06 22:47:16,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 674 events. 391/674 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3219 event pairs, 13 based on Foata normal form. 44/666 useless extension candidates. Maximal degree in co-relation 2124. Up to 373 conditions per place. [2023-11-06 22:47:16,618 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 65 selfloop transitions, 39 changer transitions 2/106 dead transitions. [2023-11-06 22:47:16,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 106 transitions, 865 flow [2023-11-06 22:47:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:47:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:47:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 684 transitions. [2023-11-06 22:47:16,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572192513368984 [2023-11-06 22:47:16,622 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 684 transitions. [2023-11-06 22:47:16,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 684 transitions. [2023-11-06 22:47:16,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:16,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 684 transitions. [2023-11-06 22:47:16,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.5) internal successors, (684), 8 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:16,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 22:47:16,631 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 22:47:16,631 INFO L175 Difference]: Start difference. First operand has 38 places, 56 transitions, 391 flow. Second operand 8 states and 684 transitions. [2023-11-06 22:47:16,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 106 transitions, 865 flow [2023-11-06 22:47:16,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 106 transitions, 825 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-11-06 22:47:16,654 INFO L231 Difference]: Finished difference. Result has 47 places, 72 transitions, 696 flow [2023-11-06 22:47:16,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=696, PETRI_PLACES=47, PETRI_TRANSITIONS=72} [2023-11-06 22:47:16,655 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2023-11-06 22:47:16,655 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 72 transitions, 696 flow [2023-11-06 22:47:16,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states 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 22:47:16,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:16,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:16,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:16,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:16,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:16,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash 926751446, now seen corresponding path program 1 times [2023-11-06 22:47:16,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:16,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68489358] [2023-11-06 22:47:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:16,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:17,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:17,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68489358] [2023-11-06 22:47:17,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68489358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:17,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:17,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:17,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151854205] [2023-11-06 22:47:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:17,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:17,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:17,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:17,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:17,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-11-06 22:47:17,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 72 transitions, 696 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 22:47:17,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:17,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-11-06 22:47:17,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:17,260 INFO L124 PetriNetUnfolderBase]: 342/593 cut-off events. [2023-11-06 22:47:17,261 INFO L125 PetriNetUnfolderBase]: For 2540/2540 co-relation queries the response was YES. [2023-11-06 22:47:17,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 593 events. 342/593 cut-off events. For 2540/2540 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2671 event pairs, 188 based on Foata normal form. 44/633 useless extension candidates. Maximal degree in co-relation 1935. Up to 593 conditions per place. [2023-11-06 22:47:17,269 INFO L140 encePairwiseOnDemand]: 185/187 looper letters, 63 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-06 22:47:17,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 720 flow [2023-11-06 22:47:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-11-06 22:47:17,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44563279857397503 [2023-11-06 22:47:17,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-11-06 22:47:17,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-11-06 22:47:17,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:17,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-11-06 22:47:17,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:17,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:17,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:17,276 INFO L175 Difference]: Start difference. First operand has 47 places, 72 transitions, 696 flow. Second operand 3 states and 250 transitions. [2023-11-06 22:47:17,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 720 flow [2023-11-06 22:47:17,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 633 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-11-06 22:47:17,291 INFO L231 Difference]: Finished difference. Result has 42 places, 64 transitions, 507 flow [2023-11-06 22:47:17,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=507, PETRI_PLACES=42, PETRI_TRANSITIONS=64} [2023-11-06 22:47:17,292 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-11-06 22:47:17,292 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 64 transitions, 507 flow [2023-11-06 22:47:17,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 22:47:17,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:17,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:17,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:47:17,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:17,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 938110463, now seen corresponding path program 1 times [2023-11-06 22:47:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:17,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972427641] [2023-11-06 22:47:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:17,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:17,420 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 22:47:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972427641] [2023-11-06 22:47:17,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972427641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094481244] [2023-11-06 22:47:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:17,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:17,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:17,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:17,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:47:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:17,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:47:17,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:17,598 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 22:47:17,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:17,881 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 22:47:17,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094481244] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:17,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:17,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-06 22:47:17,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462725744] [2023-11-06 22:47:17,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:17,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:47:17,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:17,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:47:17,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:47:17,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 187 [2023-11-06 22:47:17,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 64 transitions, 507 flow. Second operand has 10 states, 10 states have (on average 69.1) internal successors, (691), 10 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 22:47:17,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:17,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 187 [2023-11-06 22:47:17,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:18,323 INFO L124 PetriNetUnfolderBase]: 461/782 cut-off events. [2023-11-06 22:47:18,323 INFO L125 PetriNetUnfolderBase]: For 1904/1904 co-relation queries the response was YES. [2023-11-06 22:47:18,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2944 conditions, 782 events. 461/782 cut-off events. For 1904/1904 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3628 event pairs, 21 based on Foata normal form. 148/926 useless extension candidates. Maximal degree in co-relation 2929. Up to 297 conditions per place. [2023-11-06 22:47:18,332 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 71 selfloop transitions, 51 changer transitions 0/122 dead transitions. [2023-11-06 22:47:18,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 122 transitions, 1053 flow [2023-11-06 22:47:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:47:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:47:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 693 transitions. [2023-11-06 22:47:18,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2023-11-06 22:47:18,337 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 693 transitions. [2023-11-06 22:47:18,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 693 transitions. [2023-11-06 22:47:18,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:18,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 693 transitions. [2023-11-06 22:47:18,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.0) internal successors, (693), 9 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 22:47:18,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states 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 22:47:18,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states 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 22:47:18,345 INFO L175 Difference]: Start difference. First operand has 42 places, 64 transitions, 507 flow. Second operand 9 states and 693 transitions. [2023-11-06 22:47:18,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 122 transitions, 1053 flow [2023-11-06 22:47:18,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 122 transitions, 1037 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:47:18,360 INFO L231 Difference]: Finished difference. Result has 54 places, 87 transitions, 957 flow [2023-11-06 22:47:18,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=957, PETRI_PLACES=54, PETRI_TRANSITIONS=87} [2023-11-06 22:47:18,362 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2023-11-06 22:47:18,363 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 87 transitions, 957 flow [2023-11-06 22:47:18,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.1) internal successors, (691), 10 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 22:47:18,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:18,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:18,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:18,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:18,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:18,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:18,569 INFO L85 PathProgramCache]: Analyzing trace with hash 926752374, now seen corresponding path program 1 times [2023-11-06 22:47:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:18,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908179049] [2023-11-06 22:47:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:18,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:18,723 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 22:47:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908179049] [2023-11-06 22:47:18,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908179049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:18,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253166181] [2023-11-06 22:47:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:18,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:18,726 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:18,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:47:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:18,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:47:18,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:18,910 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 22:47:18,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:19,469 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 22:47:19,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253166181] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:19,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:19,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-06 22:47:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708441819] [2023-11-06 22:47:19,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:19,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:47:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:47:19,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:47:19,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 187 [2023-11-06 22:47:19,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 87 transitions, 957 flow. Second operand has 11 states, 11 states have (on average 65.9090909090909) internal successors, (725), 11 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 22:47:19,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:19,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 187 [2023-11-06 22:47:19,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:20,487 INFO L124 PetriNetUnfolderBase]: 947/1522 cut-off events. [2023-11-06 22:47:20,488 INFO L125 PetriNetUnfolderBase]: For 7844/7844 co-relation queries the response was YES. [2023-11-06 22:47:20,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7864 conditions, 1522 events. 947/1522 cut-off events. For 7844/7844 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7607 event pairs, 19 based on Foata normal form. 64/1576 useless extension candidates. Maximal degree in co-relation 7843. Up to 663 conditions per place. [2023-11-06 22:47:20,510 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 121 selfloop transitions, 145 changer transitions 12/278 dead transitions. [2023-11-06 22:47:20,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 278 transitions, 3311 flow [2023-11-06 22:47:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:47:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:47:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1187 transitions. [2023-11-06 22:47:20,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967245989304813 [2023-11-06 22:47:20,519 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1187 transitions. [2023-11-06 22:47:20,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1187 transitions. [2023-11-06 22:47:20,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:20,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1187 transitions. [2023-11-06 22:47:20,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 74.1875) internal successors, (1187), 16 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 22:47:20,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 187.0) internal successors, (3179), 17 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states 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 22:47:20,570 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 187.0) internal successors, (3179), 17 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states 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 22:47:20,571 INFO L175 Difference]: Start difference. First operand has 54 places, 87 transitions, 957 flow. Second operand 16 states and 1187 transitions. [2023-11-06 22:47:20,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 278 transitions, 3311 flow [2023-11-06 22:47:20,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 278 transitions, 3159 flow, removed 74 selfloop flow, removed 2 redundant places. [2023-11-06 22:47:20,611 INFO L231 Difference]: Finished difference. Result has 76 places, 206 transitions, 2937 flow [2023-11-06 22:47:20,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2937, PETRI_PLACES=76, PETRI_TRANSITIONS=206} [2023-11-06 22:47:20,614 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 52 predicate places. [2023-11-06 22:47:20,614 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 206 transitions, 2937 flow [2023-11-06 22:47:20,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.9090909090909) internal successors, (725), 11 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 22:47:20,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:20,615 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:20,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:20,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:47:20,821 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:20,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1335475625, now seen corresponding path program 1 times [2023-11-06 22:47:20,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:20,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673706410] [2023-11-06 22:47:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:20,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:47:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:20,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673706410] [2023-11-06 22:47:20,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673706410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:20,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:20,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:20,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704998320] [2023-11-06 22:47:20,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:20,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:20,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:20,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:20,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-11-06 22:47:20,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 206 transitions, 2937 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 22:47:20,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:20,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-11-06 22:47:20,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:21,330 INFO L124 PetriNetUnfolderBase]: 786/1311 cut-off events. [2023-11-06 22:47:21,330 INFO L125 PetriNetUnfolderBase]: For 11644/11644 co-relation queries the response was YES. [2023-11-06 22:47:21,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7549 conditions, 1311 events. 786/1311 cut-off events. For 11644/11644 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6721 event pairs, 352 based on Foata normal form. 144/1455 useless extension candidates. Maximal degree in co-relation 7519. Up to 1311 conditions per place. [2023-11-06 22:47:21,351 INFO L140 encePairwiseOnDemand]: 185/187 looper letters, 174 selfloop transitions, 1 changer transitions 0/175 dead transitions. [2023-11-06 22:47:21,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 175 transitions, 2799 flow [2023-11-06 22:47:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:21,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-11-06 22:47:21,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47593582887700536 [2023-11-06 22:47:21,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-11-06 22:47:21,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-11-06 22:47:21,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:21,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-11-06 22:47:21,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 22:47:21,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:21,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:21,359 INFO L175 Difference]: Start difference. First operand has 76 places, 206 transitions, 2937 flow. Second operand 3 states and 267 transitions. [2023-11-06 22:47:21,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 175 transitions, 2799 flow [2023-11-06 22:47:21,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 175 transitions, 2532 flow, removed 107 selfloop flow, removed 3 redundant places. [2023-11-06 22:47:21,438 INFO L231 Difference]: Finished difference. Result has 74 places, 175 transitions, 2184 flow [2023-11-06 22:47:21,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2184, PETRI_PLACES=74, PETRI_TRANSITIONS=175} [2023-11-06 22:47:21,439 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2023-11-06 22:47:21,439 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 175 transitions, 2184 flow [2023-11-06 22:47:21,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 22:47:21,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:21,440 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:21,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:47:21,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:21,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1260401341, now seen corresponding path program 1 times [2023-11-06 22:47:21,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:21,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212055582] [2023-11-06 22:47:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:21,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:21,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:21,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212055582] [2023-11-06 22:47:21,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212055582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:21,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031913772] [2023-11-06 22:47:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:21,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:21,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:21,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:21,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:47:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:21,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:47:21,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:21,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:47:22,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031913772] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:22,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:47:22,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 10 [2023-11-06 22:47:22,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689360988] [2023-11-06 22:47:22,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:22,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:22,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:22,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:22,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:47:22,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 187 [2023-11-06 22:47:22,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 175 transitions, 2184 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 22:47:22,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:22,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 187 [2023-11-06 22:47:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:22,359 INFO L124 PetriNetUnfolderBase]: 672/1153 cut-off events. [2023-11-06 22:47:22,359 INFO L125 PetriNetUnfolderBase]: For 6272/6272 co-relation queries the response was YES. [2023-11-06 22:47:22,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5706 conditions, 1153 events. 672/1153 cut-off events. For 6272/6272 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5914 event pairs, 328 based on Foata normal form. 86/1239 useless extension candidates. Maximal degree in co-relation 5677. Up to 1153 conditions per place. [2023-11-06 22:47:22,374 INFO L140 encePairwiseOnDemand]: 185/187 looper letters, 141 selfloop transitions, 1 changer transitions 0/142 dead transitions. [2023-11-06 22:47:22,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 142 transitions, 1978 flow [2023-11-06 22:47:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-11-06 22:47:22,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45276292335115864 [2023-11-06 22:47:22,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-11-06 22:47:22,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-11-06 22:47:22,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:22,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-11-06 22:47:22,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 22:47:22,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:22,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:22,380 INFO L175 Difference]: Start difference. First operand has 74 places, 175 transitions, 2184 flow. Second operand 3 states and 254 transitions. [2023-11-06 22:47:22,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 142 transitions, 1978 flow [2023-11-06 22:47:22,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 1952 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-06 22:47:22,415 INFO L231 Difference]: Finished difference. Result has 71 places, 142 transitions, 1670 flow [2023-11-06 22:47:22,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=1668, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1670, PETRI_PLACES=71, PETRI_TRANSITIONS=142} [2023-11-06 22:47:22,417 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2023-11-06 22:47:22,417 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 142 transitions, 1670 flow [2023-11-06 22:47:22,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 22:47:22,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:22,417 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-11-06 22:47:22,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:22,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:47:22,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:22,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1335444874, now seen corresponding path program 1 times [2023-11-06 22:47:22,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:22,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195475582] [2023-11-06 22:47:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:22,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195475582] [2023-11-06 22:47:22,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195475582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991280235] [2023-11-06 22:47:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:22,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:22,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:22,852 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:22,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:47:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:22,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:47:22,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:23,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:47:23,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991280235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:23,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:23,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 11 [2023-11-06 22:47:23,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741791052] [2023-11-06 22:47:23,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:23,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:47:23,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:47:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:47:23,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 187 [2023-11-06 22:47:23,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 142 transitions, 1670 flow. Second operand has 12 states, 12 states have (on average 72.0) internal successors, (864), 12 states have internal predecessors, (864), 0 states have call successors, (0), 0 states 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 22:47:23,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:23,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 187 [2023-11-06 22:47:23,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:24,334 INFO L124 PetriNetUnfolderBase]: 910/1577 cut-off events. [2023-11-06 22:47:24,335 INFO L125 PetriNetUnfolderBase]: For 7737/7737 co-relation queries the response was YES. [2023-11-06 22:47:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 1577 events. 910/1577 cut-off events. For 7737/7737 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8618 event pairs, 97 based on Foata normal form. 156/1733 useless extension candidates. Maximal degree in co-relation 7553. Up to 519 conditions per place. [2023-11-06 22:47:24,352 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 100 selfloop transitions, 133 changer transitions 10/243 dead transitions. [2023-11-06 22:47:24,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 243 transitions, 2997 flow [2023-11-06 22:47:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:47:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:47:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 793 transitions. [2023-11-06 22:47:24,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42406417112299466 [2023-11-06 22:47:24,357 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 793 transitions. [2023-11-06 22:47:24,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 793 transitions. [2023-11-06 22:47:24,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:24,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 793 transitions. [2023-11-06 22:47:24,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.3) internal successors, (793), 10 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:47:24,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 187.0) internal successors, (2057), 11 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states 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 22:47:24,365 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 187.0) internal successors, (2057), 11 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states 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 22:47:24,365 INFO L175 Difference]: Start difference. First operand has 71 places, 142 transitions, 1670 flow. Second operand 10 states and 793 transitions. [2023-11-06 22:47:24,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 243 transitions, 2997 flow [2023-11-06 22:47:24,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 243 transitions, 2863 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-11-06 22:47:24,437 INFO L231 Difference]: Finished difference. Result has 80 places, 191 transitions, 2719 flow [2023-11-06 22:47:24,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2719, PETRI_PLACES=80, PETRI_TRANSITIONS=191} [2023-11-06 22:47:24,438 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2023-11-06 22:47:24,440 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 191 transitions, 2719 flow [2023-11-06 22:47:24,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.0) internal successors, (864), 12 states have internal predecessors, (864), 0 states have call successors, (0), 0 states 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 22:47:24,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:24,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:24,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:24,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:24,647 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:24,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:24,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1335445828, now seen corresponding path program 1 times [2023-11-06 22:47:24,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:24,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849332415] [2023-11-06 22:47:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:24,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:24,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849332415] [2023-11-06 22:47:24,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849332415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:24,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:24,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:47:24,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117964691] [2023-11-06 22:47:24,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:24,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:47:24,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:24,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:47:24,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:47:24,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-11-06 22:47:24,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 191 transitions, 2719 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 22:47:24,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:24,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-11-06 22:47:24,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:25,163 INFO L124 PetriNetUnfolderBase]: 801/1446 cut-off events. [2023-11-06 22:47:25,163 INFO L125 PetriNetUnfolderBase]: For 8825/8825 co-relation queries the response was YES. [2023-11-06 22:47:25,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 1446 events. 801/1446 cut-off events. For 8825/8825 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8256 event pairs, 435 based on Foata normal form. 98/1544 useless extension candidates. Maximal degree in co-relation 7349. Up to 1446 conditions per place. [2023-11-06 22:47:25,179 INFO L140 encePairwiseOnDemand]: 185/187 looper letters, 137 selfloop transitions, 1 changer transitions 18/156 dead transitions. [2023-11-06 22:47:25,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 156 transitions, 2474 flow [2023-11-06 22:47:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:47:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:47:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-11-06 22:47:25,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44028520499108736 [2023-11-06 22:47:25,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-11-06 22:47:25,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-11-06 22:47:25,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:25,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-11-06 22:47:25,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:25,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:25,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:47:25,189 INFO L175 Difference]: Start difference. First operand has 80 places, 191 transitions, 2719 flow. Second operand 3 states and 247 transitions. [2023-11-06 22:47:25,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 156 transitions, 2474 flow [2023-11-06 22:47:25,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 156 transitions, 2397 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-06 22:47:25,247 INFO L231 Difference]: Finished difference. Result has 76 places, 138 transitions, 1902 flow [2023-11-06 22:47:25,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1902, PETRI_PLACES=76, PETRI_TRANSITIONS=138} [2023-11-06 22:47:25,249 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 52 predicate places. [2023-11-06 22:47:25,250 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 138 transitions, 1902 flow [2023-11-06 22:47:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 22:47:25,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:25,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:47:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:47:25,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:25,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:25,251 INFO L85 PathProgramCache]: Analyzing trace with hash -417764174, now seen corresponding path program 1 times [2023-11-06 22:47:25,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:25,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083741819] [2023-11-06 22:47:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:25,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:25,700 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 22:47:25,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:25,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083741819] [2023-11-06 22:47:25,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083741819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:25,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993532195] [2023-11-06 22:47:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:25,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:25,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:25,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:25,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:47:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:25,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:47:25,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:26,007 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 22:47:26,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993532195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:26,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:47:26,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311394488] [2023-11-06 22:47:26,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:26,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:47:26,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:47:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:47:26,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 187 [2023-11-06 22:47:26,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 138 transitions, 1902 flow. Second operand has 16 states, 16 states have (on average 61.6875) internal successors, (987), 16 states have internal predecessors, (987), 0 states have call successors, (0), 0 states 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 22:47:26,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:26,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 187 [2023-11-06 22:47:26,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:27,708 INFO L124 PetriNetUnfolderBase]: 934/1667 cut-off events. [2023-11-06 22:47:27,709 INFO L125 PetriNetUnfolderBase]: For 10020/10020 co-relation queries the response was YES. [2023-11-06 22:47:27,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8708 conditions, 1667 events. 934/1667 cut-off events. For 10020/10020 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9662 event pairs, 31 based on Foata normal form. 110/1777 useless extension candidates. Maximal degree in co-relation 8679. Up to 354 conditions per place. [2023-11-06 22:47:27,730 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 85 selfloop transitions, 144 changer transitions 36/265 dead transitions. [2023-11-06 22:47:27,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 265 transitions, 3602 flow [2023-11-06 22:47:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:47:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:47:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1012 transitions. [2023-11-06 22:47:27,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3607843137254902 [2023-11-06 22:47:27,736 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1012 transitions. [2023-11-06 22:47:27,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1012 transitions. [2023-11-06 22:47:27,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:27,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1012 transitions. [2023-11-06 22:47:27,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.46666666666667) internal successors, (1012), 15 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states 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 22:47:27,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 187.0) internal successors, (2992), 16 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 22:47:27,748 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 187.0) internal successors, (2992), 16 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 22:47:27,748 INFO L175 Difference]: Start difference. First operand has 76 places, 138 transitions, 1902 flow. Second operand 15 states and 1012 transitions. [2023-11-06 22:47:27,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 265 transitions, 3602 flow [2023-11-06 22:47:27,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 265 transitions, 3554 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-06 22:47:27,810 INFO L231 Difference]: Finished difference. Result has 95 places, 193 transitions, 3310 flow [2023-11-06 22:47:27,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3310, PETRI_PLACES=95, PETRI_TRANSITIONS=193} [2023-11-06 22:47:27,811 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 71 predicate places. [2023-11-06 22:47:27,811 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 193 transitions, 3310 flow [2023-11-06 22:47:27,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 61.6875) internal successors, (987), 16 states have internal predecessors, (987), 0 states have call successors, (0), 0 states 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 22:47:27,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:27,812 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:27,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:28,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:28,023 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:28,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1549959994, now seen corresponding path program 1 times [2023-11-06 22:47:28,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:28,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118586349] [2023-11-06 22:47:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:28,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:47:28,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:28,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118586349] [2023-11-06 22:47:28,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118586349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:28,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082929647] [2023-11-06 22:47:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:28,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:28,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:28,530 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:28,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:47:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:28,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:47:28,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:28,962 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 22:47:28,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:29,870 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 22:47:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082929647] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:29,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:29,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 14 [2023-11-06 22:47:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171939303] [2023-11-06 22:47:29,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:29,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:47:29,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:47:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:47:29,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 187 [2023-11-06 22:47:29,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 193 transitions, 3310 flow. Second operand has 16 states, 16 states have (on average 64.6875) internal successors, (1035), 16 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 22:47:29,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:29,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 187 [2023-11-06 22:47:29,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:31,380 INFO L124 PetriNetUnfolderBase]: 1408/2423 cut-off events. [2023-11-06 22:47:31,381 INFO L125 PetriNetUnfolderBase]: For 22752/22752 co-relation queries the response was YES. [2023-11-06 22:47:31,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15695 conditions, 2423 events. 1408/2423 cut-off events. For 22752/22752 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14366 event pairs, 47 based on Foata normal form. 104/2527 useless extension candidates. Maximal degree in co-relation 15655. Up to 547 conditions per place. [2023-11-06 22:47:31,414 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 131 selfloop transitions, 230 changer transitions 54/415 dead transitions. [2023-11-06 22:47:31,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 415 transitions, 7072 flow [2023-11-06 22:47:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:47:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:47:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1333 transitions. [2023-11-06 22:47:31,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3751759076836476 [2023-11-06 22:47:31,422 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1333 transitions. [2023-11-06 22:47:31,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1333 transitions. [2023-11-06 22:47:31,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:31,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1333 transitions. [2023-11-06 22:47:31,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 70.15789473684211) internal successors, (1333), 19 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states 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 22:47:31,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 187.0) internal successors, (3740), 20 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states 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 22:47:31,438 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 187.0) internal successors, (3740), 20 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states 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 22:47:31,438 INFO L175 Difference]: Start difference. First operand has 95 places, 193 transitions, 3310 flow. Second operand 19 states and 1333 transitions. [2023-11-06 22:47:31,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 415 transitions, 7072 flow [2023-11-06 22:47:31,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 415 transitions, 6570 flow, removed 153 selfloop flow, removed 7 redundant places. [2023-11-06 22:47:31,638 INFO L231 Difference]: Finished difference. Result has 117 places, 310 transitions, 5926 flow [2023-11-06 22:47:31,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5926, PETRI_PLACES=117, PETRI_TRANSITIONS=310} [2023-11-06 22:47:31,639 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 93 predicate places. [2023-11-06 22:47:31,639 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 310 transitions, 5926 flow [2023-11-06 22:47:31,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 64.6875) internal successors, (1035), 16 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 22:47:31,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:31,640 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:31,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 22:47:31,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:47:31,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:31,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1549958995, now seen corresponding path program 2 times [2023-11-06 22:47:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:31,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883411296] [2023-11-06 22:47:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:31,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:47:32,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:32,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883411296] [2023-11-06 22:47:32,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883411296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:32,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450720463] [2023-11-06 22:47:32,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:47:32,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:32,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:32,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:32,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:47:32,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:47:32,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:47:32,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:47:32,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:32,323 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 22:47:32,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:33,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450720463] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:33,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:33,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 12 [2023-11-06 22:47:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305488653] [2023-11-06 22:47:33,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:33,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:47:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:33,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:47:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:47:33,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 187 [2023-11-06 22:47:33,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 310 transitions, 5926 flow. Second operand has 13 states, 13 states have (on average 61.0) internal successors, (793), 13 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:47:33,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:33,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 187 [2023-11-06 22:47:33,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:34,717 INFO L124 PetriNetUnfolderBase]: 1743/3046 cut-off events. [2023-11-06 22:47:34,718 INFO L125 PetriNetUnfolderBase]: For 43070/43070 co-relation queries the response was YES. [2023-11-06 22:47:34,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21713 conditions, 3046 events. 1743/3046 cut-off events. For 43070/43070 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 19218 event pairs, 131 based on Foata normal form. 276/3322 useless extension candidates. Maximal degree in co-relation 21665. Up to 1400 conditions per place. [2023-11-06 22:47:34,756 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 207 selfloop transitions, 251 changer transitions 72/530 dead transitions. [2023-11-06 22:47:34,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 530 transitions, 10686 flow [2023-11-06 22:47:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:47:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:47:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 787 transitions. [2023-11-06 22:47:34,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35071301247771836 [2023-11-06 22:47:34,762 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 787 transitions. [2023-11-06 22:47:34,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 787 transitions. [2023-11-06 22:47:34,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:34,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 787 transitions. [2023-11-06 22:47:34,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.58333333333333) internal successors, (787), 12 states have internal predecessors, (787), 0 states have call successors, (0), 0 states 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 22:47:34,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 187.0) internal successors, (2431), 13 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states 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 22:47:34,776 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 187.0) internal successors, (2431), 13 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states 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 22:47:34,776 INFO L175 Difference]: Start difference. First operand has 117 places, 310 transitions, 5926 flow. Second operand 12 states and 787 transitions. [2023-11-06 22:47:34,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 530 transitions, 10686 flow [2023-11-06 22:47:35,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 530 transitions, 10246 flow, removed 196 selfloop flow, removed 8 redundant places. [2023-11-06 22:47:35,059 INFO L231 Difference]: Finished difference. Result has 128 places, 402 transitions, 8572 flow [2023-11-06 22:47:35,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=5396, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8572, PETRI_PLACES=128, PETRI_TRANSITIONS=402} [2023-11-06 22:47:35,060 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 104 predicate places. [2023-11-06 22:47:35,060 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 402 transitions, 8572 flow [2023-11-06 22:47:35,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.0) internal successors, (793), 13 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 22:47:35,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:35,061 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:35,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:35,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:47:35,272 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:35,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:35,272 INFO L85 PathProgramCache]: Analyzing trace with hash -342690890, now seen corresponding path program 2 times [2023-11-06 22:47:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:35,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294905409] [2023-11-06 22:47:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:35,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:35,649 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 22:47:35,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:35,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294905409] [2023-11-06 22:47:35,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294905409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:35,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604523685] [2023-11-06 22:47:35,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:47:35,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:35,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:35,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:35,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:47:35,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:47:35,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:47:35,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:47:35,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:35,998 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 22:47:35,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:36,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604523685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:36,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:36,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-11-06 22:47:36,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633710045] [2023-11-06 22:47:36,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:36,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:47:36,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:36,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:47:36,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:47:36,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 187 [2023-11-06 22:47:36,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 402 transitions, 8572 flow. Second operand has 15 states, 15 states have (on average 61.733333333333334) internal successors, (926), 15 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 22:47:36,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:36,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 187 [2023-11-06 22:47:36,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:38,841 INFO L124 PetriNetUnfolderBase]: 1739/3068 cut-off events. [2023-11-06 22:47:38,842 INFO L125 PetriNetUnfolderBase]: For 43149/43149 co-relation queries the response was YES. [2023-11-06 22:47:38,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25142 conditions, 3068 events. 1739/3068 cut-off events. For 43149/43149 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 19341 event pairs, 117 based on Foata normal form. 56/3124 useless extension candidates. Maximal degree in co-relation 25089. Up to 1718 conditions per place. [2023-11-06 22:47:38,872 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 247 selfloop transitions, 318 changer transitions 39/604 dead transitions. [2023-11-06 22:47:38,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 604 transitions, 13281 flow [2023-11-06 22:47:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:47:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 22:47:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1131 transitions. [2023-11-06 22:47:38,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35577225542623464 [2023-11-06 22:47:38,877 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1131 transitions. [2023-11-06 22:47:38,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1131 transitions. [2023-11-06 22:47:38,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:38,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1131 transitions. [2023-11-06 22:47:38,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 66.52941176470588) internal successors, (1131), 17 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states 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 22:47:38,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 187.0) internal successors, (3366), 18 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 22:47:38,888 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 187.0) internal successors, (3366), 18 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states 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 22:47:38,889 INFO L175 Difference]: Start difference. First operand has 128 places, 402 transitions, 8572 flow. Second operand 17 states and 1131 transitions. [2023-11-06 22:47:38,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 604 transitions, 13281 flow [2023-11-06 22:47:39,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 604 transitions, 12965 flow, removed 148 selfloop flow, removed 3 redundant places. [2023-11-06 22:47:39,319 INFO L231 Difference]: Finished difference. Result has 149 places, 518 transitions, 12163 flow [2023-11-06 22:47:39,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=8169, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12163, PETRI_PLACES=149, PETRI_TRANSITIONS=518} [2023-11-06 22:47:39,321 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 125 predicate places. [2023-11-06 22:47:39,321 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 518 transitions, 12163 flow [2023-11-06 22:47:39,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 61.733333333333334) internal successors, (926), 15 states have internal predecessors, (926), 0 states have call successors, (0), 0 states 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 22:47:39,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:39,322 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:39,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:39,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:39,527 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:39,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash 832750134, now seen corresponding path program 3 times [2023-11-06 22:47:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:39,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282311612] [2023-11-06 22:47:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:39,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:40,187 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 22:47:40,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:40,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282311612] [2023-11-06 22:47:40,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282311612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:40,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242382378] [2023-11-06 22:47:40,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:47:40,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:40,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:40,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:40,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:47:40,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:47:40,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:47:40,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:47:40,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:40,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:47:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242382378] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:41,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:41,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-06 22:47:41,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056898948] [2023-11-06 22:47:41,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:41,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:47:41,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:47:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:47:41,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 187 [2023-11-06 22:47:41,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 518 transitions, 12163 flow. Second operand has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 22:47:41,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:41,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 187 [2023-11-06 22:47:41,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:43,688 INFO L124 PetriNetUnfolderBase]: 2629/4510 cut-off events. [2023-11-06 22:47:43,688 INFO L125 PetriNetUnfolderBase]: For 73793/73793 co-relation queries the response was YES. [2023-11-06 22:47:43,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40310 conditions, 4510 events. 2629/4510 cut-off events. For 73793/73793 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 29616 event pairs, 138 based on Foata normal form. 162/4672 useless extension candidates. Maximal degree in co-relation 40249. Up to 1153 conditions per place. [2023-11-06 22:47:43,750 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 384 selfloop transitions, 530 changer transitions 50/964 dead transitions. [2023-11-06 22:47:43,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 964 transitions, 23611 flow [2023-11-06 22:47:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:47:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:47:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1091 transitions. [2023-11-06 22:47:43,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38894830659536545 [2023-11-06 22:47:43,755 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1091 transitions. [2023-11-06 22:47:43,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1091 transitions. [2023-11-06 22:47:43,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:43,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1091 transitions. [2023-11-06 22:47:43,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 72.73333333333333) internal successors, (1091), 15 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states 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 22:47:43,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 187.0) internal successors, (2992), 16 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 22:47:43,765 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 187.0) internal successors, (2992), 16 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states 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 22:47:43,765 INFO L175 Difference]: Start difference. First operand has 149 places, 518 transitions, 12163 flow. Second operand 15 states and 1091 transitions. [2023-11-06 22:47:43,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 964 transitions, 23611 flow [2023-11-06 22:47:44,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 964 transitions, 23042 flow, removed 227 selfloop flow, removed 8 redundant places. [2023-11-06 22:47:45,023 INFO L231 Difference]: Finished difference. Result has 164 places, 834 transitions, 22164 flow [2023-11-06 22:47:45,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=11363, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=22164, PETRI_PLACES=164, PETRI_TRANSITIONS=834} [2023-11-06 22:47:45,024 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 140 predicate places. [2023-11-06 22:47:45,024 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 834 transitions, 22164 flow [2023-11-06 22:47:45,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states 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 22:47:45,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:45,026 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:45,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:45,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:47:45,231 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:45,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:45,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1550882554, now seen corresponding path program 2 times [2023-11-06 22:47:45,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:45,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975404863] [2023-11-06 22:47:45,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:45,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:45,814 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 22:47:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:45,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975404863] [2023-11-06 22:47:45,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975404863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:45,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511225450] [2023-11-06 22:47:45,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:47:45,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:45,820 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:45,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:47:45,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:47:45,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:47:45,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:47:45,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:46,289 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 22:47:46,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:46,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511225450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:46,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:46,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-11-06 22:47:46,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78333401] [2023-11-06 22:47:46,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:46,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:47:46,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:47:46,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:47:46,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 187 [2023-11-06 22:47:46,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 834 transitions, 22164 flow. Second operand has 15 states, 15 states have (on average 64.73333333333333) internal successors, (971), 15 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 22:47:46,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:46,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 187 [2023-11-06 22:47:46,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:50,369 INFO L124 PetriNetUnfolderBase]: 3032/5317 cut-off events. [2023-11-06 22:47:50,369 INFO L125 PetriNetUnfolderBase]: For 109110/109110 co-relation queries the response was YES. [2023-11-06 22:47:50,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50671 conditions, 5317 events. 3032/5317 cut-off events. For 109110/109110 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 36935 event pairs, 180 based on Foata normal form. 224/5541 useless extension candidates. Maximal degree in co-relation 50603. Up to 1811 conditions per place. [2023-11-06 22:47:50,438 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 378 selfloop transitions, 597 changer transitions 74/1049 dead transitions. [2023-11-06 22:47:50,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 1049 transitions, 28348 flow [2023-11-06 22:47:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:47:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 22:47:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1321 transitions. [2023-11-06 22:47:50,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717984801576133 [2023-11-06 22:47:50,444 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1321 transitions. [2023-11-06 22:47:50,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1321 transitions. [2023-11-06 22:47:50,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:50,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1321 transitions. [2023-11-06 22:47:50,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 69.52631578947368) internal successors, (1321), 19 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states 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 22:47:50,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 187.0) internal successors, (3740), 20 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states 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 22:47:50,474 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 187.0) internal successors, (3740), 20 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states 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 22:47:50,475 INFO L175 Difference]: Start difference. First operand has 164 places, 834 transitions, 22164 flow. Second operand 19 states and 1321 transitions. [2023-11-06 22:47:50,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 1049 transitions, 28348 flow [2023-11-06 22:47:52,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1049 transitions, 27203 flow, removed 373 selfloop flow, removed 7 redundant places. [2023-11-06 22:47:52,140 INFO L231 Difference]: Finished difference. Result has 187 places, 931 transitions, 26383 flow [2023-11-06 22:47:52,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=19378, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=26383, PETRI_PLACES=187, PETRI_TRANSITIONS=931} [2023-11-06 22:47:52,141 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 163 predicate places. [2023-11-06 22:47:52,141 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 931 transitions, 26383 flow [2023-11-06 22:47:52,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 64.73333333333333) internal successors, (971), 15 states have internal predecessors, (971), 0 states have call successors, (0), 0 states 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 22:47:52,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:52,142 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-11-06 22:47:52,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:52,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:47:52,343 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:52,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash 831825689, now seen corresponding path program 2 times [2023-11-06 22:47:52,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:52,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514780990] [2023-11-06 22:47:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:52,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:52,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514780990] [2023-11-06 22:47:52,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514780990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27363074] [2023-11-06 22:47:52,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:47:52,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:52,662 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:52,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:47:52,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:47:52,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:47:52,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:47:52,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:53,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:53,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27363074] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:53,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:53,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 14 [2023-11-06 22:47:53,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738850956] [2023-11-06 22:47:53,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:53,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:47:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:53,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:47:53,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:47:54,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 187 [2023-11-06 22:47:54,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 931 transitions, 26383 flow. Second operand has 15 states, 15 states have (on average 60.6) internal successors, (909), 15 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:47:54,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:47:54,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 187 [2023-11-06 22:47:54,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:47:56,723 INFO L124 PetriNetUnfolderBase]: 2316/4115 cut-off events. [2023-11-06 22:47:56,723 INFO L125 PetriNetUnfolderBase]: For 110068/110068 co-relation queries the response was YES. [2023-11-06 22:47:56,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44496 conditions, 4115 events. 2316/4115 cut-off events. For 110068/110068 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 27578 event pairs, 40 based on Foata normal form. 798/4913 useless extension candidates. Maximal degree in co-relation 44419. Up to 1421 conditions per place. [2023-11-06 22:47:56,766 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 68 selfloop transitions, 861 changer transitions 61/990 dead transitions. [2023-11-06 22:47:56,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 990 transitions, 29854 flow [2023-11-06 22:47:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:47:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:47:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 525 transitions. [2023-11-06 22:47:56,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35093582887700536 [2023-11-06 22:47:56,769 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 525 transitions. [2023-11-06 22:47:56,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 525 transitions. [2023-11-06 22:47:56,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:47:56,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 525 transitions. [2023-11-06 22:47:56,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.625) internal successors, (525), 8 states have internal predecessors, (525), 0 states have call successors, (0), 0 states 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 22:47:56,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 22:47:56,774 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states 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 22:47:56,774 INFO L175 Difference]: Start difference. First operand has 187 places, 931 transitions, 26383 flow. Second operand 8 states and 525 transitions. [2023-11-06 22:47:56,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 990 transitions, 29854 flow [2023-11-06 22:47:57,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 990 transitions, 27288 flow, removed 424 selfloop flow, removed 13 redundant places. [2023-11-06 22:47:57,782 INFO L231 Difference]: Finished difference. Result has 180 places, 911 transitions, 27277 flow [2023-11-06 22:47:57,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=20249, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=690, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27277, PETRI_PLACES=180, PETRI_TRANSITIONS=911} [2023-11-06 22:47:57,783 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 156 predicate places. [2023-11-06 22:47:57,783 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 911 transitions, 27277 flow [2023-11-06 22:47:57,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 60.6) internal successors, (909), 15 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:47:57,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:47:57,784 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-06 22:47:57,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:57,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:47:57,989 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:47:57,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:57,990 INFO L85 PathProgramCache]: Analyzing trace with hash -362395432, now seen corresponding path program 3 times [2023-11-06 22:47:57,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:57,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756262327] [2023-11-06 22:47:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:57,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:58,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756262327] [2023-11-06 22:47:58,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756262327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627629649] [2023-11-06 22:47:58,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:47:58,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:58,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:58,866 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:58,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:47:58,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:47:58,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:47:58,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:47:58,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:59,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:48:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627629649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:00,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:00,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 21 [2023-11-06 22:48:00,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334123175] [2023-11-06 22:48:00,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:48:00,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:00,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:48:00,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:48:00,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 187 [2023-11-06 22:48:00,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 911 transitions, 27277 flow. Second operand has 22 states, 22 states have (on average 60.59090909090909) internal successors, (1333), 22 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states 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 22:48:00,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:00,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 187 [2023-11-06 22:48:00,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:05,329 INFO L124 PetriNetUnfolderBase]: 3078/5547 cut-off events. [2023-11-06 22:48:05,329 INFO L125 PetriNetUnfolderBase]: For 137060/137060 co-relation queries the response was YES. [2023-11-06 22:48:05,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63168 conditions, 5547 events. 3078/5547 cut-off events. For 137060/137060 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 39373 event pairs, 106 based on Foata normal form. 256/5803 useless extension candidates. Maximal degree in co-relation 63097. Up to 2343 conditions per place. [2023-11-06 22:48:05,403 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 283 selfloop transitions, 1122 changer transitions 83/1488 dead transitions. [2023-11-06 22:48:05,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1488 transitions, 45689 flow [2023-11-06 22:48:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:48:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:48:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1418 transitions. [2023-11-06 22:48:05,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446767136606709 [2023-11-06 22:48:05,408 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1418 transitions. [2023-11-06 22:48:05,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1418 transitions. [2023-11-06 22:48:05,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:05,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1418 transitions. [2023-11-06 22:48:05,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 64.45454545454545) internal successors, (1418), 22 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states 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 22:48:05,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 187.0) internal successors, (4301), 23 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states 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 22:48:05,420 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 187.0) internal successors, (4301), 23 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states 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 22:48:05,420 INFO L175 Difference]: Start difference. First operand has 180 places, 911 transitions, 27277 flow. Second operand 22 states and 1418 transitions. [2023-11-06 22:48:05,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 1488 transitions, 45689 flow [2023-11-06 22:48:06,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 1488 transitions, 44269 flow, removed 221 selfloop flow, removed 10 redundant places. [2023-11-06 22:48:06,869 INFO L231 Difference]: Finished difference. Result has 196 places, 1342 transitions, 42677 flow [2023-11-06 22:48:06,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=25366, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=872, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=684, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=42677, PETRI_PLACES=196, PETRI_TRANSITIONS=1342} [2023-11-06 22:48:06,870 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2023-11-06 22:48:06,870 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 1342 transitions, 42677 flow [2023-11-06 22:48:06,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 60.59090909090909) internal successors, (1333), 22 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states 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 22:48:06,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:06,871 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-06 22:48:06,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:07,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:48:07,072 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:48:07,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash -334718595, now seen corresponding path program 3 times [2023-11-06 22:48:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:07,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684642953] [2023-11-06 22:48:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:07,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:08,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:08,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684642953] [2023-11-06 22:48:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684642953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:08,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638095740] [2023-11-06 22:48:08,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:48:08,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:08,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:08,025 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:08,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:48:08,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-06 22:48:08,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:48:08,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:48:08,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:08,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:48:09,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638095740] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:09,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:09,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 20 [2023-11-06 22:48:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064497823] [2023-11-06 22:48:09,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:09,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:48:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:48:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:48:09,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 187 [2023-11-06 22:48:09,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 1342 transitions, 42677 flow. Second operand has 21 states, 21 states have (on average 59.61904761904762) internal successors, (1252), 21 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states 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 22:48:09,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:09,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 187 [2023-11-06 22:48:09,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:14,464 INFO L124 PetriNetUnfolderBase]: 2781/4738 cut-off events. [2023-11-06 22:48:14,464 INFO L125 PetriNetUnfolderBase]: For 117922/117922 co-relation queries the response was YES. [2023-11-06 22:48:14,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64411 conditions, 4738 events. 2781/4738 cut-off events. For 117922/117922 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 30179 event pairs, 0 based on Foata normal form. 72/4810 useless extension candidates. Maximal degree in co-relation 64341. Up to 2237 conditions per place. [2023-11-06 22:48:14,545 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 536 selfloop transitions, 1223 changer transitions 14/1773 dead transitions. [2023-11-06 22:48:14,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 1773 transitions, 58615 flow [2023-11-06 22:48:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:48:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-06 22:48:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1972 transitions. [2023-11-06 22:48:14,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2023-11-06 22:48:14,551 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1972 transitions. [2023-11-06 22:48:14,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1972 transitions. [2023-11-06 22:48:14,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:14,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1972 transitions. [2023-11-06 22:48:14,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 61.625) internal successors, (1972), 32 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states 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 22:48:14,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 187.0) internal successors, (6171), 33 states have internal predecessors, (6171), 0 states have call successors, (0), 0 states 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 22:48:14,566 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 187.0) internal successors, (6171), 33 states have internal predecessors, (6171), 0 states have call successors, (0), 0 states 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 22:48:14,567 INFO L175 Difference]: Start difference. First operand has 196 places, 1342 transitions, 42677 flow. Second operand 32 states and 1972 transitions. [2023-11-06 22:48:14,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 1773 transitions, 58615 flow [2023-11-06 22:48:16,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 1773 transitions, 54922 flow, removed 1023 selfloop flow, removed 14 redundant places. [2023-11-06 22:48:16,679 INFO L231 Difference]: Finished difference. Result has 220 places, 1685 transitions, 54014 flow [2023-11-06 22:48:16,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=38727, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=874, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=54014, PETRI_PLACES=220, PETRI_TRANSITIONS=1685} [2023-11-06 22:48:16,680 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 196 predicate places. [2023-11-06 22:48:16,681 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 1685 transitions, 54014 flow [2023-11-06 22:48:16,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 59.61904761904762) internal successors, (1252), 21 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states 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 22:48:16,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:16,681 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2023-11-06 22:48:16,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-06 22:48:16,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:16,882 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:48:16,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash 485729814, now seen corresponding path program 4 times [2023-11-06 22:48:16,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:16,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734781082] [2023-11-06 22:48:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:16,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:18,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734781082] [2023-11-06 22:48:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734781082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:48:18,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47892219] [2023-11-06 22:48:18,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:48:18,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:18,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:18,501 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:48:18,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:48:18,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:48:18,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:48:18,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:48:18,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:19,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:48:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:48:20,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47892219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:48:20,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:48:20,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 26 [2023-11-06 22:48:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500065160] [2023-11-06 22:48:20,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:48:20,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:48:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:20,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:48:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:48:20,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 187 [2023-11-06 22:48:20,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 1685 transitions, 54014 flow. Second operand has 27 states, 27 states have (on average 60.51851851851852) internal successors, (1634), 27 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states 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 22:48:20,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:20,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 187 [2023-11-06 22:48:20,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:25,018 INFO L124 PetriNetUnfolderBase]: 2637/4430 cut-off events. [2023-11-06 22:48:25,018 INFO L125 PetriNetUnfolderBase]: For 107762/107762 co-relation queries the response was YES. [2023-11-06 22:48:25,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61861 conditions, 4430 events. 2637/4430 cut-off events. For 107762/107762 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 27429 event pairs, 0 based on Foata normal form. 36/4466 useless extension candidates. Maximal degree in co-relation 61793. Up to 1959 conditions per place. [2023-11-06 22:48:25,066 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 0 selfloop transitions, 0 changer transitions 1653/1653 dead transitions. [2023-11-06 22:48:25,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 1653 transitions, 56332 flow [2023-11-06 22:48:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:48:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:48:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 751 transitions. [2023-11-06 22:48:25,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33467023172905525 [2023-11-06 22:48:25,070 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 751 transitions. [2023-11-06 22:48:25,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 751 transitions. [2023-11-06 22:48:25,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:25,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 751 transitions. [2023-11-06 22:48:25,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 62.583333333333336) internal successors, (751), 12 states have internal predecessors, (751), 0 states have call successors, (0), 0 states 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 22:48:25,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 187.0) internal successors, (2431), 13 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states 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 22:48:25,076 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 187.0) internal successors, (2431), 13 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states 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 22:48:25,076 INFO L175 Difference]: Start difference. First operand has 220 places, 1685 transitions, 54014 flow. Second operand 12 states and 751 transitions. [2023-11-06 22:48:25,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 1653 transitions, 56332 flow [2023-11-06 22:48:26,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1653 transitions, 52599 flow, removed 272 selfloop flow, removed 13 redundant places. [2023-11-06 22:48:26,996 INFO L231 Difference]: Finished difference. Result has 205 places, 0 transitions, 0 flow [2023-11-06 22:48:26,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=49219, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=205, PETRI_TRANSITIONS=0} [2023-11-06 22:48:26,997 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 181 predicate places. [2023-11-06 22:48:26,998 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 0 transitions, 0 flow [2023-11-06 22:48:26,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 60.51851851851852) internal successors, (1634), 27 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states 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 22:48:27,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-11-06 22:48:27,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-06 22:48:27,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-06 22:48:27,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-06 22:48:27,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-06 22:48:27,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-06 22:48:27,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-06 22:48:27,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-06 22:48:27,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-11-06 22:48:27,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-06 22:48:27,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-06 22:48:27,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-06 22:48:27,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-06 22:48:27,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-06 22:48:27,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-06 22:48:27,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-06 22:48:27,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-06 22:48:27,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-06 22:48:27,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:27,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:48:27,208 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:27,212 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:48:27,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:48:27,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:48:27 BasicIcfg [2023-11-06 22:48:27,216 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:48:27,216 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:48:27,217 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:48:27,217 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:48:27,217 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:09" (3/4) ... [2023-11-06 22:48:27,219 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:48:27,222 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:48:27,222 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:48:27,226 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-06 22:48:27,226 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:48:27,226 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:48:27,226 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:48:27,274 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:48:27,274 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:48:27,275 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:48:27,275 INFO L158 Benchmark]: Toolchain (without parser) took 79178.85ms. Allocated memory was 161.5MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 125.8MB in the beginning and 538.5MB in the end (delta: -412.6MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-06 22:48:27,276 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory was 73.9MB in the beginning and 73.7MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:48:27,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.77ms. Allocated memory is still 161.5MB. Free memory was 125.5MB in the beginning and 114.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:48:27,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.51ms. Allocated memory is still 161.5MB. Free memory was 114.3MB in the beginning and 112.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:48:27,277 INFO L158 Benchmark]: Boogie Preprocessor took 33.79ms. Allocated memory is still 161.5MB. Free memory was 112.9MB in the beginning and 111.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:48:27,277 INFO L158 Benchmark]: RCFGBuilder took 544.24ms. Allocated memory is still 161.5MB. Free memory was 111.5MB in the beginning and 94.8MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 22:48:27,278 INFO L158 Benchmark]: TraceAbstraction took 78163.20ms. Allocated memory was 161.5MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 94.0MB in the beginning and 541.1MB in the end (delta: -447.1MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-06 22:48:27,278 INFO L158 Benchmark]: Witness Printer took 58.19ms. Allocated memory is still 1.8GB. Free memory was 541.1MB in the beginning and 538.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:48:27,280 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory was 73.9MB in the beginning and 73.7MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.77ms. Allocated memory is still 161.5MB. Free memory was 125.5MB in the beginning and 114.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.51ms. Allocated memory is still 161.5MB. Free memory was 114.3MB in the beginning and 112.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.79ms. Allocated memory is still 161.5MB. Free memory was 112.9MB in the beginning and 111.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 544.24ms. Allocated memory is still 161.5MB. Free memory was 111.5MB in the beginning and 94.8MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 78163.20ms. Allocated memory was 161.5MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 94.0MB in the beginning and 541.1MB in the end (delta: -447.1MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 58.19ms. Allocated memory is still 1.8GB. Free memory was 541.1MB in the beginning and 538.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 76 PlacesBefore, 24 PlacesAfterwards, 79 TransitionsBefore, 19 TransitionsAfterwards, 1628 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 84 TotalNumberOfCompositions, 1682 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1611, independent: 1604, independent conditional: 0, independent unconditional: 1604, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 788, independent: 783, independent conditional: 0, independent unconditional: 783, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1611, independent: 821, independent conditional: 0, independent unconditional: 821, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 788, unknown conditional: 0, unknown unconditional: 788] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 131 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 78.0s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 46.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2953 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2744 mSDsluCounter, 558 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 495 mSDsCounter, 965 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5738 IncrementalHoareTripleChecker+Invalid, 6703 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 965 mSolverCounterUnsat, 63 mSDtfsCounter, 5738 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 522 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2647 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54014occurred in iteration=19, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 308 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 397 ConstructedInterpolants, 0 QuantifiedInterpolants, 5549 SizeOfPredicates, 83 NumberOfNonLiveVariables, 1278 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 52 InterpolantComputations, 5 PerfectInterpolantSequences, 69/284 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:48:27,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7087c5e-3bc5-43fe-a8de-11ccaff24584/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE