./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-symm.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_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/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_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/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_8d59dea7-732a-494d-b50a-f931f90c2c4c/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 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:07:33,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:07:33,583 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:07:33,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:07:33,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:07:33,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:07:33,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:07:33,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:07:33,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:07:33,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:07:33,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:07:33,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:07:33,629 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:07:33,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:07:33,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:07:33,638 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:07:33,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:07:33,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:07:33,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:07:33,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:07:33,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:07:33,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:07:33,643 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:07:33,643 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:07:33,644 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:07:33,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:07:33,645 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:07:33,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:07:33,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:07:33,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:07:33,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:33,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:07:33,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:07:33,648 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:07:33,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:07:33,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:07:33,649 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:07:33,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:07:33,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:07:33,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:07:33,650 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:07:33,651 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_8d59dea7-732a-494d-b50a-f931f90c2c4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e [2023-11-06 23:07:33,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:07:33,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:07:33,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:07:33,962 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:07:33,962 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:07:33,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2023-11-06 23:07:37,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:07:37,397 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:07:37,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2023-11-06 23:07:37,406 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/data/5197bdeca/5f1c9e33090644779199972515da3058/FLAG82a4236c2 [2023-11-06 23:07:37,423 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/data/5197bdeca/5f1c9e33090644779199972515da3058 [2023-11-06 23:07:37,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:07:37,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:07:37,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:37,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:07:37,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:07:37,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dd6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37, skipping insertion in model container [2023-11-06 23:07:37,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:07:37,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:37,688 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:07:37,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:07:37,737 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:07:37,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37 WrapperNode [2023-11-06 23:07:37,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:07:37,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:37,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:07:37,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:07:37,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,787 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 141 [2023-11-06 23:07:37,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:07:37,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:07:37,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:07:37,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:07:37,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:07:37,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:07:37,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:07:37,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:07:37,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (1/1) ... [2023-11-06 23:07:37,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:07:37,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:37,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:37,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:37,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:07:37,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:07:37,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:07:37,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:07:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:37,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:07:37,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:07:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:07:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:37,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:07:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:07:37,936 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 23:07:38,068 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:38,071 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:38,533 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:38,547 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:38,548 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 23:07:38,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:38 BoogieIcfgContainer [2023-11-06 23:07:38,551 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:38,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:38,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:38,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:38,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:37" (1/3) ... [2023-11-06 23:07:38,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5ee9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:38, skipping insertion in model container [2023-11-06 23:07:38,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:37" (2/3) ... [2023-11-06 23:07:38,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5ee9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:38, skipping insertion in model container [2023-11-06 23:07:38,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:38" (3/3) ... [2023-11-06 23:07:38,561 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2023-11-06 23:07:38,570 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:07:38,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:38,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 23:07:38,580 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:07:38,730 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:07:38,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 258 transitions, 530 flow [2023-11-06 23:07:38,894 INFO L124 PetriNetUnfolderBase]: 21/256 cut-off events. [2023-11-06 23:07:38,894 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:07:38,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 256 events. 21/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 350 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 174. Up to 3 conditions per place. [2023-11-06 23:07:38,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 258 transitions, 530 flow [2023-11-06 23:07:38,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 218 transitions, 445 flow [2023-11-06 23:07:38,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:07:38,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 218 transitions, 445 flow [2023-11-06 23:07:38,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 218 transitions, 445 flow [2023-11-06 23:07:38,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 218 transitions, 445 flow [2023-11-06 23:07:39,019 INFO L124 PetriNetUnfolderBase]: 18/218 cut-off events. [2023-11-06 23:07:39,019 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:07:39,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 218 events. 18/218 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 339 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 174. Up to 3 conditions per place. [2023-11-06 23:07:39,025 INFO L119 LiptonReduction]: Number of co-enabled transitions 4212 [2023-11-06 23:07:48,205 INFO L134 LiptonReduction]: Checked pairs total: 5552 [2023-11-06 23:07:48,206 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-11-06 23:07:48,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:48,234 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;@1395814d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:48,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 23:07:48,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:07:48,237 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:07:48,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:07:48,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:48,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:07:48,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:48,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:48,243 INFO L85 PathProgramCache]: Analyzing trace with hash 30731, now seen corresponding path program 1 times [2023-11-06 23:07:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045517373] [2023-11-06 23:07:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:48,569 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 23:07:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045517373] [2023-11-06 23:07:48,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045517373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:48,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:48,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:07:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625434576] [2023-11-06 23:07:48,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:48,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:48,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:48,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:48,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 503 [2023-11-06 23:07:48,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 23:07:48,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:48,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 503 [2023-11-06 23:07:48,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:48,884 INFO L124 PetriNetUnfolderBase]: 303/494 cut-off events. [2023-11-06 23:07:48,885 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-06 23:07:48,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 494 events. 303/494 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1921 event pairs, 207 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 912. Up to 484 conditions per place. [2023-11-06 23:07:48,891 INFO L140 encePairwiseOnDemand]: 494/503 looper letters, 34 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-11-06 23:07:48,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 167 flow [2023-11-06 23:07:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2023-11-06 23:07:48,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897282968853545 [2023-11-06 23:07:48,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 739 transitions. [2023-11-06 23:07:48,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 739 transitions. [2023-11-06 23:07:48,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:48,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 739 transitions. [2023-11-06 23:07:48,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.33333333333334) internal successors, (739), 3 states have internal predecessors, (739), 0 states have call successors, (0), 0 states 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 23:07:48,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:07:48,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:07:48,951 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 81 flow. Second operand 3 states and 739 transitions. [2023-11-06 23:07:48,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 167 flow [2023-11-06 23:07:48,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:07:48,958 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 120 flow [2023-11-06 23:07:48,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2023-11-06 23:07:48,966 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-11-06 23:07:48,966 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 120 flow [2023-11-06 23:07:48,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 23:07:48,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:48,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:07:48,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:07:48,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:48,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash 953508, now seen corresponding path program 1 times [2023-11-06 23:07:48,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269637427] [2023-11-06 23:07:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:49,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:49,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269637427] [2023-11-06 23:07:49,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269637427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:49,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567537318] [2023-11-06 23:07:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:49,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:49,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:49,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:49,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:07:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:49,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:49,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:49,341 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 23:07:49,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:49,365 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 23:07:49,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567537318] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:49,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:49,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 23:07:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866689845] [2023-11-06 23:07:49,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:49,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:07:49,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:07:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:49,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 503 [2023-11-06 23:07:49,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 233.14285714285714) internal successors, (1632), 7 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states 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 23:07:49,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:49,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 503 [2023-11-06 23:07:49,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:49,741 INFO L124 PetriNetUnfolderBase]: 315/512 cut-off events. [2023-11-06 23:07:49,741 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:07:49,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 512 events. 315/512 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1984 event pairs, 207 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 975. Up to 485 conditions per place. [2023-11-06 23:07:49,750 INFO L140 encePairwiseOnDemand]: 494/503 looper letters, 32 selfloop transitions, 25 changer transitions 0/58 dead transitions. [2023-11-06 23:07:49,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 312 flow [2023-11-06 23:07:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:07:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1687 transitions. [2023-11-06 23:07:49,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47912524850894633 [2023-11-06 23:07:49,761 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1687 transitions. [2023-11-06 23:07:49,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1687 transitions. [2023-11-06 23:07:49,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:49,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1687 transitions. [2023-11-06 23:07:49,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states 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 23:07:49,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 503.0) internal successors, (4024), 8 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states 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 23:07:49,788 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 503.0) internal successors, (4024), 8 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states 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 23:07:49,788 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 120 flow. Second operand 7 states and 1687 transitions. [2023-11-06 23:07:49,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 312 flow [2023-11-06 23:07:49,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:49,793 INFO L231 Difference]: Finished difference. Result has 44 places, 58 transitions, 274 flow [2023-11-06 23:07:49,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=44, PETRI_TRANSITIONS=58} [2023-11-06 23:07:49,794 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-11-06 23:07:49,794 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 58 transitions, 274 flow [2023-11-06 23:07:49,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 233.14285714285714) internal successors, (1632), 7 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states 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 23:07:49,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:49,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 23:07:49,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:50,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:50,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:50,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash 29559594, now seen corresponding path program 1 times [2023-11-06 23:07:50,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:50,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196810133] [2023-11-06 23:07:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:50,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:50,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:50,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196810133] [2023-11-06 23:07:50,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196810133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:50,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909109572] [2023-11-06 23:07:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:50,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:50,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:50,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:50,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:07:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:07:50,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:50,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:50,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909109572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:50,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:07:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393910350] [2023-11-06 23:07:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:50,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:50,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:50,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:07:50,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 503 [2023-11-06 23:07:50,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 58 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 232.8) internal successors, (1164), 5 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 23:07:50,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:50,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 503 [2023-11-06 23:07:50,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:50,510 INFO L124 PetriNetUnfolderBase]: 309/504 cut-off events. [2023-11-06 23:07:50,516 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 23:07:50,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 504 events. 309/504 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1954 event pairs, 207 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 1024. Up to 479 conditions per place. [2023-11-06 23:07:50,521 INFO L140 encePairwiseOnDemand]: 496/503 looper letters, 35 selfloop transitions, 14 changer transitions 0/50 dead transitions. [2023-11-06 23:07:50,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 318 flow [2023-11-06 23:07:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:07:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1205 transitions. [2023-11-06 23:07:50,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47912524850894633 [2023-11-06 23:07:50,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1205 transitions. [2023-11-06 23:07:50,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1205 transitions. [2023-11-06 23:07:50,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:50,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1205 transitions. [2023-11-06 23:07:50,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states 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 23:07:50,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:07:50,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:07:50,584 INFO L175 Difference]: Start difference. First operand has 44 places, 58 transitions, 274 flow. Second operand 5 states and 1205 transitions. [2023-11-06 23:07:50,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 318 flow [2023-11-06 23:07:50,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 292 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:50,588 INFO L231 Difference]: Finished difference. Result has 44 places, 50 transitions, 222 flow [2023-11-06 23:07:50,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=44, PETRI_TRANSITIONS=50} [2023-11-06 23:07:50,589 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-11-06 23:07:50,590 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 50 transitions, 222 flow [2023-11-06 23:07:50,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.8) internal successors, (1164), 5 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states 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 23:07:50,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:50,591 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 23:07:50,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:50,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:50,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:50,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1657973173, now seen corresponding path program 2 times [2023-11-06 23:07:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28147127] [2023-11-06 23:07:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:50,961 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 23:07:50,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28147127] [2023-11-06 23:07:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28147127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801107454] [2023-11-06 23:07:50,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:07:50,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:50,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:50,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:50,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:07:51,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:07:51,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:51,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:07:51,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:07:51,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:51,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801107454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:51,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:51,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 23:07:51,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631370087] [2023-11-06 23:07:51,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:51,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:51,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:51,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:51,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 503 [2023-11-06 23:07:51,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 50 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 23:07:51,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:51,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 503 [2023-11-06 23:07:51,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:51,237 INFO L124 PetriNetUnfolderBase]: 309/503 cut-off events. [2023-11-06 23:07:51,237 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-06 23:07:51,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 503 events. 309/503 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1955 event pairs, 207 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 1027. Up to 490 conditions per place. [2023-11-06 23:07:51,241 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 42 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2023-11-06 23:07:51,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 308 flow [2023-11-06 23:07:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-11-06 23:07:51,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49105367793240556 [2023-11-06 23:07:51,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-11-06 23:07:51,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-11-06 23:07:51,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:51,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-11-06 23:07:51,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 23:07:51,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:07:51,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:07:51,253 INFO L175 Difference]: Start difference. First operand has 44 places, 50 transitions, 222 flow. Second operand 3 states and 741 transitions. [2023-11-06 23:07:51,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 308 flow [2023-11-06 23:07:51,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:07:51,257 INFO L231 Difference]: Finished difference. Result has 42 places, 49 transitions, 204 flow [2023-11-06 23:07:51,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=42, PETRI_TRANSITIONS=49} [2023-11-06 23:07:51,258 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-11-06 23:07:51,258 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 49 transitions, 204 flow [2023-11-06 23:07:51,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 23:07:51,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:51,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:51,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:51,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:51,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:51,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:51,465 INFO L85 PathProgramCache]: Analyzing trace with hash 789572628, now seen corresponding path program 1 times [2023-11-06 23:07:51,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:51,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319156357] [2023-11-06 23:07:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:51,515 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 23:07:51,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:51,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319156357] [2023-11-06 23:07:51,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319156357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:51,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:51,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:51,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67793223] [2023-11-06 23:07:51,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:51,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:51,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:51,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 503 [2023-11-06 23:07:51,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 23:07:51,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:51,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 503 [2023-11-06 23:07:51,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:51,715 INFO L124 PetriNetUnfolderBase]: 416/682 cut-off events. [2023-11-06 23:07:51,716 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 23:07:51,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 682 events. 416/682 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2892 event pairs, 207 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 1363. Up to 528 conditions per place. [2023-11-06 23:07:51,722 INFO L140 encePairwiseOnDemand]: 497/503 looper letters, 60 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-11-06 23:07:51,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 366 flow [2023-11-06 23:07:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-11-06 23:07:51,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508283631544069 [2023-11-06 23:07:51,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-11-06 23:07:51,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-11-06 23:07:51,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:51,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-11-06 23:07:51,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states 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 23:07:51,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:07:51,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:07:51,734 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 204 flow. Second operand 3 states and 767 transitions. [2023-11-06 23:07:51,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 366 flow [2023-11-06 23:07:51,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:51,737 INFO L231 Difference]: Finished difference. Result has 43 places, 52 transitions, 220 flow [2023-11-06 23:07:51,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=43, PETRI_TRANSITIONS=52} [2023-11-06 23:07:51,738 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-06 23:07:51,738 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 52 transitions, 220 flow [2023-11-06 23:07:51,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 23:07:51,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:51,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:51,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:07:51,740 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:51,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:51,740 INFO L85 PathProgramCache]: Analyzing trace with hash 789572795, now seen corresponding path program 1 times [2023-11-06 23:07:51,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:51,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844520436] [2023-11-06 23:07:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:51,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:51,821 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 23:07:51,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844520436] [2023-11-06 23:07:51,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844520436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:51,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:51,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347740085] [2023-11-06 23:07:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:51,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:51,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:52,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 503 [2023-11-06 23:07:52,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 52 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 23:07:52,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:52,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 503 [2023-11-06 23:07:52,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:52,175 INFO L124 PetriNetUnfolderBase]: 391/625 cut-off events. [2023-11-06 23:07:52,176 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-06 23:07:52,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 625 events. 391/625 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2415 event pairs, 249 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 1451. Up to 603 conditions per place. [2023-11-06 23:07:52,181 INFO L140 encePairwiseOnDemand]: 497/503 looper letters, 42 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2023-11-06 23:07:52,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 318 flow [2023-11-06 23:07:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:07:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 920 transitions. [2023-11-06 23:07:52,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572564612326044 [2023-11-06 23:07:52,186 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 920 transitions. [2023-11-06 23:07:52,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 920 transitions. [2023-11-06 23:07:52,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:52,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 920 transitions. [2023-11-06 23:07:52,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:07:52,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 23:07:52,218 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 23:07:52,219 INFO L175 Difference]: Start difference. First operand has 43 places, 52 transitions, 220 flow. Second operand 4 states and 920 transitions. [2023-11-06 23:07:52,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 318 flow [2023-11-06 23:07:52,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:52,221 INFO L231 Difference]: Finished difference. Result has 44 places, 51 transitions, 230 flow [2023-11-06 23:07:52,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=44, PETRI_TRANSITIONS=51} [2023-11-06 23:07:52,222 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-11-06 23:07:52,223 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 51 transitions, 230 flow [2023-11-06 23:07:52,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.4) internal successors, (1112), 5 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states 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 23:07:52,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:52,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:52,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:07:52,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:52,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash 789572849, now seen corresponding path program 1 times [2023-11-06 23:07:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985419582] [2023-11-06 23:07:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,307 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 23:07:52,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:52,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985419582] [2023-11-06 23:07:52,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985419582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:52,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:52,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:52,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722336941] [2023-11-06 23:07:52,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:52,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:52,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:52,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 503 [2023-11-06 23:07:52,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 51 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 225.75) internal successors, (903), 4 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 23:07:52,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:52,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 503 [2023-11-06 23:07:52,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:52,680 INFO L124 PetriNetUnfolderBase]: 687/1086 cut-off events. [2023-11-06 23:07:52,680 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-06 23:07:52,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 1086 events. 687/1086 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4632 event pairs, 408 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 2447. Up to 536 conditions per place. [2023-11-06 23:07:52,690 INFO L140 encePairwiseOnDemand]: 495/503 looper letters, 81 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-11-06 23:07:52,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 88 transitions, 551 flow [2023-11-06 23:07:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:07:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1183 transitions. [2023-11-06 23:07:52,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47037773359840956 [2023-11-06 23:07:52,695 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1183 transitions. [2023-11-06 23:07:52,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1183 transitions. [2023-11-06 23:07:52,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:52,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1183 transitions. [2023-11-06 23:07:52,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.6) internal successors, (1183), 5 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states 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 23:07:52,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:07:52,707 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:07:52,707 INFO L175 Difference]: Start difference. First operand has 44 places, 51 transitions, 230 flow. Second operand 5 states and 1183 transitions. [2023-11-06 23:07:52,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 88 transitions, 551 flow [2023-11-06 23:07:52,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 88 transitions, 531 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:07:52,712 INFO L231 Difference]: Finished difference. Result has 48 places, 54 transitions, 258 flow [2023-11-06 23:07:52,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=48, PETRI_TRANSITIONS=54} [2023-11-06 23:07:52,714 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-11-06 23:07:52,714 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 54 transitions, 258 flow [2023-11-06 23:07:52,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 225.75) internal successors, (903), 4 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 23:07:52,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:52,715 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 23:07:52,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:07:52,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:52,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash 797093288, now seen corresponding path program 1 times [2023-11-06 23:07:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:52,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598080859] [2023-11-06 23:07:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,851 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 23:07:52,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:52,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598080859] [2023-11-06 23:07:52,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598080859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:52,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402376530] [2023-11-06 23:07:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:52,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:52,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:52,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:52,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:07:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:52,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:07:52,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:52,983 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 23:07:52,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:53,049 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 23:07:53,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402376530] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:53,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:53,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 23:07:53,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884633354] [2023-11-06 23:07:53,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:53,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:07:53,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:53,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:07:53,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:07:53,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 503 [2023-11-06 23:07:53,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 54 transitions, 258 flow. Second operand has 13 states, 13 states have (on average 233.15384615384616) internal successors, (3031), 13 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states 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 23:07:53,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:53,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 503 [2023-11-06 23:07:53,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:53,472 INFO L124 PetriNetUnfolderBase]: 705/1122 cut-off events. [2023-11-06 23:07:53,472 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2023-11-06 23:07:53,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2785 conditions, 1122 events. 705/1122 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4834 event pairs, 409 based on Foata normal form. 12/858 useless extension candidates. Maximal degree in co-relation 2565. Up to 1052 conditions per place. [2023-11-06 23:07:53,483 INFO L140 encePairwiseOnDemand]: 497/503 looper letters, 34 selfloop transitions, 43 changer transitions 0/78 dead transitions. [2023-11-06 23:07:53,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 562 flow [2023-11-06 23:07:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:07:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:07:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2861 transitions. [2023-11-06 23:07:53,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47398939695162357 [2023-11-06 23:07:53,495 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2861 transitions. [2023-11-06 23:07:53,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2861 transitions. [2023-11-06 23:07:53,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:53,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2861 transitions. [2023-11-06 23:07:53,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 238.41666666666666) internal successors, (2861), 12 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states 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 23:07:53,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 503.0) internal successors, (6539), 13 states have internal predecessors, (6539), 0 states have call successors, (0), 0 states 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 23:07:53,522 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 503.0) internal successors, (6539), 13 states have internal predecessors, (6539), 0 states have call successors, (0), 0 states 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 23:07:53,522 INFO L175 Difference]: Start difference. First operand has 48 places, 54 transitions, 258 flow. Second operand 12 states and 2861 transitions. [2023-11-06 23:07:53,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 562 flow [2023-11-06 23:07:53,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 556 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-06 23:07:53,527 INFO L231 Difference]: Finished difference. Result has 65 places, 78 transitions, 542 flow [2023-11-06 23:07:53,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=542, PETRI_PLACES=65, PETRI_TRANSITIONS=78} [2023-11-06 23:07:53,530 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-11-06 23:07:53,530 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 78 transitions, 542 flow [2023-11-06 23:07:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 233.15384615384616) internal successors, (3031), 13 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states 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 23:07:53,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:53,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:53,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:53,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:53,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:53,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1291601229, now seen corresponding path program 1 times [2023-11-06 23:07:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:53,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294778519] [2023-11-06 23:07:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:53,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:53,791 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 23:07:53,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:53,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294778519] [2023-11-06 23:07:53,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294778519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:53,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:53,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:53,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979683176] [2023-11-06 23:07:53,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:53,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:53,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:53,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 503 [2023-11-06 23:07:53,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 78 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 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 23:07:53,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:53,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 503 [2023-11-06 23:07:53,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:54,106 INFO L124 PetriNetUnfolderBase]: 920/1395 cut-off events. [2023-11-06 23:07:54,106 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2023-11-06 23:07:54,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1395 events. 920/1395 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5920 event pairs, 409 based on Foata normal form. 0/1081 useless extension candidates. Maximal degree in co-relation 3457. Up to 1217 conditions per place. [2023-11-06 23:07:54,119 INFO L140 encePairwiseOnDemand]: 496/503 looper letters, 93 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2023-11-06 23:07:54,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 100 transitions, 813 flow [2023-11-06 23:07:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:07:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2023-11-06 23:07:54,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089463220675944 [2023-11-06 23:07:54,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2023-11-06 23:07:54,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2023-11-06 23:07:54,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:54,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2023-11-06 23:07:54,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 23:07:54,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:07:54,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:07:54,132 INFO L175 Difference]: Start difference. First operand has 65 places, 78 transitions, 542 flow. Second operand 3 states and 768 transitions. [2023-11-06 23:07:54,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 100 transitions, 813 flow [2023-11-06 23:07:54,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 685 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-11-06 23:07:54,138 INFO L231 Difference]: Finished difference. Result has 63 places, 83 transitions, 464 flow [2023-11-06 23:07:54,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=63, PETRI_TRANSITIONS=83} [2023-11-06 23:07:54,139 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-11-06 23:07:54,139 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 83 transitions, 464 flow [2023-11-06 23:07:54,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 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 23:07:54,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:54,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:54,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:07:54,141 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:54,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:54,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1384930764, now seen corresponding path program 1 times [2023-11-06 23:07:54,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:54,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938018916] [2023-11-06 23:07:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:54,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:54,226 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 23:07:54,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:54,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938018916] [2023-11-06 23:07:54,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938018916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:54,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:54,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:54,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610659139] [2023-11-06 23:07:54,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:54,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:54,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:54,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:54,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:54,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 503 [2023-11-06 23:07:54,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 83 transitions, 464 flow. Second operand has 5 states, 5 states have (on average 225.8) internal successors, (1129), 5 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states 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 23:07:54,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:54,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 503 [2023-11-06 23:07:54,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:54,834 INFO L124 PetriNetUnfolderBase]: 1363/2112 cut-off events. [2023-11-06 23:07:54,835 INFO L125 PetriNetUnfolderBase]: For 1024/1024 co-relation queries the response was YES. [2023-11-06 23:07:54,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 2112 events. 1363/2112 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9959 event pairs, 680 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 6114. Up to 1343 conditions per place. [2023-11-06 23:07:54,857 INFO L140 encePairwiseOnDemand]: 495/503 looper letters, 105 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2023-11-06 23:07:54,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 126 transitions, 868 flow [2023-11-06 23:07:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:07:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1190 transitions. [2023-11-06 23:07:54,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731610337972167 [2023-11-06 23:07:54,863 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1190 transitions. [2023-11-06 23:07:54,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1190 transitions. [2023-11-06 23:07:54,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:54,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1190 transitions. [2023-11-06 23:07:54,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states 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 23:07:54,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:07:54,876 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:07:54,876 INFO L175 Difference]: Start difference. First operand has 63 places, 83 transitions, 464 flow. Second operand 5 states and 1190 transitions. [2023-11-06 23:07:54,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 126 transitions, 868 flow [2023-11-06 23:07:54,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 126 transitions, 855 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 23:07:54,885 INFO L231 Difference]: Finished difference. Result has 68 places, 88 transitions, 548 flow [2023-11-06 23:07:54,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=548, PETRI_PLACES=68, PETRI_TRANSITIONS=88} [2023-11-06 23:07:54,887 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-11-06 23:07:54,887 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 88 transitions, 548 flow [2023-11-06 23:07:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 225.8) internal successors, (1129), 5 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states 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 23:07:54,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:54,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:54,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:07:54,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:54,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1291601201, now seen corresponding path program 1 times [2023-11-06 23:07:54,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:54,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239544470] [2023-11-06 23:07:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:54,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,035 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 23:07:55,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:55,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239544470] [2023-11-06 23:07:55,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239544470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:55,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:55,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:55,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346364073] [2023-11-06 23:07:55,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:55,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:55,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:55,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:55,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 503 [2023-11-06 23:07:55,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 88 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states 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 23:07:55,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:55,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 503 [2023-11-06 23:07:55,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:55,700 INFO L124 PetriNetUnfolderBase]: 1292/2017 cut-off events. [2023-11-06 23:07:55,700 INFO L125 PetriNetUnfolderBase]: For 2413/2413 co-relation queries the response was YES. [2023-11-06 23:07:55,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6007 conditions, 2017 events. 1292/2017 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9436 event pairs, 676 based on Foata normal form. 54/1821 useless extension candidates. Maximal degree in co-relation 5901. Up to 1190 conditions per place. [2023-11-06 23:07:55,719 INFO L140 encePairwiseOnDemand]: 496/503 looper letters, 96 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2023-11-06 23:07:55,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 116 transitions, 868 flow [2023-11-06 23:07:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:07:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:07:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2023-11-06 23:07:55,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644135188866799 [2023-11-06 23:07:55,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2023-11-06 23:07:55,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2023-11-06 23:07:55,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:55,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2023-11-06 23:07:55,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 23:07:55,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:07:55,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:07:55,735 INFO L175 Difference]: Start difference. First operand has 68 places, 88 transitions, 548 flow. Second operand 5 states and 1168 transitions. [2023-11-06 23:07:55,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 116 transitions, 868 flow [2023-11-06 23:07:55,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 116 transitions, 837 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:55,746 INFO L231 Difference]: Finished difference. Result has 72 places, 89 transitions, 572 flow [2023-11-06 23:07:55,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=572, PETRI_PLACES=72, PETRI_TRANSITIONS=89} [2023-11-06 23:07:55,747 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-11-06 23:07:55,747 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 89 transitions, 572 flow [2023-11-06 23:07:55,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states 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 23:07:55,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:55,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:07:55,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:55,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash 767807480, now seen corresponding path program 1 times [2023-11-06 23:07:55,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:55,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464613157] [2023-11-06 23:07:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:55,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,864 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 23:07:55,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:55,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464613157] [2023-11-06 23:07:55,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464613157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:55,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801545825] [2023-11-06 23:07:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:55,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:55,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:55,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:55,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:07:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:55,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:07:55,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:07:56,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:56,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801545825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:56,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:07:56,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 23:07:56,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342958216] [2023-11-06 23:07:56,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:56,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:56,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 503 [2023-11-06 23:07:56,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 89 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 23:07:56,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:56,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 503 [2023-11-06 23:07:56,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:56,383 INFO L124 PetriNetUnfolderBase]: 1053/1644 cut-off events. [2023-11-06 23:07:56,383 INFO L125 PetriNetUnfolderBase]: For 2117/2117 co-relation queries the response was YES. [2023-11-06 23:07:56,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 1644 events. 1053/1644 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7374 event pairs, 549 based on Foata normal form. 92/1548 useless extension candidates. Maximal degree in co-relation 4804. Up to 1576 conditions per place. [2023-11-06 23:07:56,398 INFO L140 encePairwiseOnDemand]: 498/503 looper letters, 68 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-11-06 23:07:56,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 664 flow [2023-11-06 23:07:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:07:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 975 transitions. [2023-11-06 23:07:56,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845924453280318 [2023-11-06 23:07:56,403 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 975 transitions. [2023-11-06 23:07:56,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 975 transitions. [2023-11-06 23:07:56,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:56,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 975 transitions. [2023-11-06 23:07:56,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states 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 23:07:56,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 23:07:56,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 23:07:56,412 INFO L175 Difference]: Start difference. First operand has 72 places, 89 transitions, 572 flow. Second operand 4 states and 975 transitions. [2023-11-06 23:07:56,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 664 flow [2023-11-06 23:07:56,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 81 transitions, 627 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:07:56,421 INFO L231 Difference]: Finished difference. Result has 67 places, 81 transitions, 491 flow [2023-11-06 23:07:56,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=67, PETRI_TRANSITIONS=81} [2023-11-06 23:07:56,422 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-11-06 23:07:56,422 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 81 transitions, 491 flow [2023-11-06 23:07:56,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 23:07:56,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:56,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:56,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 23:07:56,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:56,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:56,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1270808790, now seen corresponding path program 1 times [2023-11-06 23:07:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468013011] [2023-11-06 23:07:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:56,819 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 23:07:56,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:56,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468013011] [2023-11-06 23:07:56,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468013011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:07:56,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263770779] [2023-11-06 23:07:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:56,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:56,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:56,821 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:56,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:07:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:56,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:07:56,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:57,096 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 23:07:57,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:57,191 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 23:07:57,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263770779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:57,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:07:57,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-11-06 23:07:57,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341322899] [2023-11-06 23:07:57,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:07:57,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:07:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:07:57,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 503 [2023-11-06 23:07:57,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 81 transitions, 491 flow. Second operand has 14 states, 14 states have (on average 218.92857142857142) internal successors, (3065), 14 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states 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 23:07:57,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:57,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 503 [2023-11-06 23:07:57,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:58,345 INFO L124 PetriNetUnfolderBase]: 1524/2409 cut-off events. [2023-11-06 23:07:58,345 INFO L125 PetriNetUnfolderBase]: For 2073/2073 co-relation queries the response was YES. [2023-11-06 23:07:58,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 2409 events. 1524/2409 cut-off events. For 2073/2073 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11824 event pairs, 840 based on Foata normal form. 192/2273 useless extension candidates. Maximal degree in co-relation 6591. Up to 1384 conditions per place. [2023-11-06 23:07:58,364 INFO L140 encePairwiseOnDemand]: 498/503 looper letters, 75 selfloop transitions, 27 changer transitions 0/103 dead transitions. [2023-11-06 23:07:58,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 751 flow [2023-11-06 23:07:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:07:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1573 transitions. [2023-11-06 23:07:58,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467480829309855 [2023-11-06 23:07:58,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1573 transitions. [2023-11-06 23:07:58,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1573 transitions. [2023-11-06 23:07:58,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:58,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1573 transitions. [2023-11-06 23:07:58,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.71428571428572) internal successors, (1573), 7 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states 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 23:07:58,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 503.0) internal successors, (4024), 8 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states 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 23:07:58,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 503.0) internal successors, (4024), 8 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states 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 23:07:58,384 INFO L175 Difference]: Start difference. First operand has 67 places, 81 transitions, 491 flow. Second operand 7 states and 1573 transitions. [2023-11-06 23:07:58,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 751 flow [2023-11-06 23:07:58,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 103 transitions, 732 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:07:58,398 INFO L231 Difference]: Finished difference. Result has 67 places, 77 transitions, 492 flow [2023-11-06 23:07:58,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=67, PETRI_TRANSITIONS=77} [2023-11-06 23:07:58,399 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-11-06 23:07:58,399 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 77 transitions, 492 flow [2023-11-06 23:07:58,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 218.92857142857142) internal successors, (3065), 14 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states 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 23:07:58,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:58,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:58,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:58,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 23:07:58,607 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:58,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1429874367, now seen corresponding path program 1 times [2023-11-06 23:07:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302497050] [2023-11-06 23:07:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:58,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:58,713 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 23:07:58,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:58,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302497050] [2023-11-06 23:07:58,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302497050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:58,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:58,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:58,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762206237] [2023-11-06 23:07:58,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:58,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:58,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:58,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 503 [2023-11-06 23:07:58,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 492 flow. Second operand has 5 states, 5 states have (on average 225.8) internal successors, (1129), 5 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states 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 23:07:58,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:58,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 503 [2023-11-06 23:07:58,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:59,250 INFO L124 PetriNetUnfolderBase]: 1025/1638 cut-off events. [2023-11-06 23:07:59,251 INFO L125 PetriNetUnfolderBase]: For 941/941 co-relation queries the response was YES. [2023-11-06 23:07:59,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 1638 events. 1025/1638 cut-off events. For 941/941 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7509 event pairs, 528 based on Foata normal form. 32/1470 useless extension candidates. Maximal degree in co-relation 4552. Up to 1171 conditions per place. [2023-11-06 23:07:59,272 INFO L140 encePairwiseOnDemand]: 495/503 looper letters, 111 selfloop transitions, 6 changer transitions 11/129 dead transitions. [2023-11-06 23:07:59,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 129 transitions, 1040 flow [2023-11-06 23:07:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:07:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:07:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1402 transitions. [2023-11-06 23:07:59,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464546056991385 [2023-11-06 23:07:59,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1402 transitions. [2023-11-06 23:07:59,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1402 transitions. [2023-11-06 23:07:59,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:59,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1402 transitions. [2023-11-06 23:07:59,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states 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 23:07:59,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 503.0) internal successors, (3521), 7 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states 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 23:07:59,291 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 503.0) internal successors, (3521), 7 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states 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 23:07:59,291 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 492 flow. Second operand 6 states and 1402 transitions. [2023-11-06 23:07:59,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 129 transitions, 1040 flow [2023-11-06 23:07:59,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 988 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 23:07:59,301 INFO L231 Difference]: Finished difference. Result has 71 places, 78 transitions, 471 flow [2023-11-06 23:07:59,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=71, PETRI_TRANSITIONS=78} [2023-11-06 23:07:59,302 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2023-11-06 23:07:59,302 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 471 flow [2023-11-06 23:07:59,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 225.8) internal successors, (1129), 5 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states 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 23:07:59,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:59,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:59,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:07:59,303 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:07:59,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash -871557496, now seen corresponding path program 1 times [2023-11-06 23:07:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:59,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761243183] [2023-11-06 23:07:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:59,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:07:59,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:59,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761243183] [2023-11-06 23:07:59,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761243183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:59,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:59,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151616385] [2023-11-06 23:07:59,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:59,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:59,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:59,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:59,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:59,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 503 [2023-11-06 23:07:59,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 78 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states 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 23:07:59,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:59,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 503 [2023-11-06 23:07:59,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:07:59,996 INFO L124 PetriNetUnfolderBase]: 865/1383 cut-off events. [2023-11-06 23:07:59,996 INFO L125 PetriNetUnfolderBase]: For 1056/1056 co-relation queries the response was YES. [2023-11-06 23:08:00,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4104 conditions, 1383 events. 865/1383 cut-off events. For 1056/1056 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5937 event pairs, 462 based on Foata normal form. 8/1199 useless extension candidates. Maximal degree in co-relation 3994. Up to 1243 conditions per place. [2023-11-06 23:08:00,010 INFO L140 encePairwiseOnDemand]: 497/503 looper letters, 61 selfloop transitions, 13 changer transitions 20/95 dead transitions. [2023-11-06 23:08:00,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 719 flow [2023-11-06 23:08:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:08:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:08:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1169 transitions. [2023-11-06 23:08:00,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648111332007952 [2023-11-06 23:08:00,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1169 transitions. [2023-11-06 23:08:00,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1169 transitions. [2023-11-06 23:08:00,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:00,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1169 transitions. [2023-11-06 23:08:00,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.8) internal successors, (1169), 5 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states 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 23:08:00,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:08:00,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 503.0) internal successors, (3018), 6 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states 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 23:08:00,027 INFO L175 Difference]: Start difference. First operand has 71 places, 78 transitions, 471 flow. Second operand 5 states and 1169 transitions. [2023-11-06 23:08:00,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 719 flow [2023-11-06 23:08:00,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 95 transitions, 712 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:08:00,036 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 469 flow [2023-11-06 23:08:00,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-11-06 23:08:00,038 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2023-11-06 23:08:00,038 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 469 flow [2023-11-06 23:08:00,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states 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 23:08:00,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:00,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:08:00,039 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:08:00,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash 740367601, now seen corresponding path program 1 times [2023-11-06 23:08:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:00,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454736142] [2023-11-06 23:08:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:00,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:00,158 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 23:08:00,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:00,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454736142] [2023-11-06 23:08:00,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454736142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:00,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:00,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:08:00,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881787939] [2023-11-06 23:08:00,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:00,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:08:00,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:08:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:08:00,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 503 [2023-11-06 23:08:00,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states 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 23:08:00,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:00,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 503 [2023-11-06 23:08:00,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:00,786 INFO L124 PetriNetUnfolderBase]: 718/1149 cut-off events. [2023-11-06 23:08:00,786 INFO L125 PetriNetUnfolderBase]: For 1027/1027 co-relation queries the response was YES. [2023-11-06 23:08:00,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 1149 events. 718/1149 cut-off events. For 1027/1027 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4824 event pairs, 366 based on Foata normal form. 20/1017 useless extension candidates. Maximal degree in co-relation 3403. Up to 916 conditions per place. [2023-11-06 23:08:00,794 INFO L140 encePairwiseOnDemand]: 496/503 looper letters, 79 selfloop transitions, 4 changer transitions 30/114 dead transitions. [2023-11-06 23:08:00,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 114 transitions, 908 flow [2023-11-06 23:08:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:08:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:08:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1398 transitions. [2023-11-06 23:08:00,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46322067594433397 [2023-11-06 23:08:00,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1398 transitions. [2023-11-06 23:08:00,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1398 transitions. [2023-11-06 23:08:00,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:00,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1398 transitions. [2023-11-06 23:08:00,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states 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 23:08:00,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 503.0) internal successors, (3521), 7 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states 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 23:08:00,813 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 503.0) internal successors, (3521), 7 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states 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 23:08:00,813 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 469 flow. Second operand 6 states and 1398 transitions. [2023-11-06 23:08:00,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 114 transitions, 908 flow [2023-11-06 23:08:00,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 114 transitions, 866 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-06 23:08:00,822 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 430 flow [2023-11-06 23:08:00,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=430, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2023-11-06 23:08:00,823 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2023-11-06 23:08:00,823 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 430 flow [2023-11-06 23:08:00,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states 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 23:08:00,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:00,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:00,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:08:00,824 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:08:00,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 868321418, now seen corresponding path program 1 times [2023-11-06 23:08:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:00,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722001586] [2023-11-06 23:08:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:00,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:08:00,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:00,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722001586] [2023-11-06 23:08:00,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722001586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:00,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307833962] [2023-11-06 23:08:00,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:00,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:00,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:00,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:00,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:08:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:01,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:08:01,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:01,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:01,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307833962] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:01,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-06 23:08:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755707264] [2023-11-06 23:08:01,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:01,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:08:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:01,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:08:01,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:08:01,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 503 [2023-11-06 23:08:01,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 430 flow. Second operand has 13 states, 13 states have (on average 222.15384615384616) internal successors, (2888), 13 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states 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 23:08:01,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:01,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 503 [2023-11-06 23:08:01,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:02,295 INFO L124 PetriNetUnfolderBase]: 1010/1615 cut-off events. [2023-11-06 23:08:02,295 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2023-11-06 23:08:02,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 1615 events. 1010/1615 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7605 event pairs, 270 based on Foata normal form. 0/1487 useless extension candidates. Maximal degree in co-relation 4555. Up to 516 conditions per place. [2023-11-06 23:08:02,303 INFO L140 encePairwiseOnDemand]: 493/503 looper letters, 112 selfloop transitions, 16 changer transitions 56/184 dead transitions. [2023-11-06 23:08:02,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 184 transitions, 1280 flow [2023-11-06 23:08:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:08:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:08:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2754 transitions. [2023-11-06 23:08:02,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562624254473161 [2023-11-06 23:08:02,314 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2754 transitions. [2023-11-06 23:08:02,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2754 transitions. [2023-11-06 23:08:02,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:02,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2754 transitions. [2023-11-06 23:08:02,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 229.5) internal successors, (2754), 12 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states 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 23:08:02,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 503.0) internal successors, (6539), 13 states have internal predecessors, (6539), 0 states have call successors, (0), 0 states 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 23:08:02,336 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 503.0) internal successors, (6539), 13 states have internal predecessors, (6539), 0 states have call successors, (0), 0 states 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 23:08:02,336 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 430 flow. Second operand 12 states and 2754 transitions. [2023-11-06 23:08:02,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 184 transitions, 1280 flow [2023-11-06 23:08:02,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 184 transitions, 1241 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-06 23:08:02,351 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 476 flow [2023-11-06 23:08:02,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=476, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2023-11-06 23:08:02,352 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-11-06 23:08:02,352 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 476 flow [2023-11-06 23:08:02,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 222.15384615384616) internal successors, (2888), 13 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states 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 23:08:02,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:02,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:02,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:02,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 23:08:02,559 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:08:02,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash 823377842, now seen corresponding path program 1 times [2023-11-06 23:08:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:02,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714963524] [2023-11-06 23:08:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:02,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:08:02,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:02,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714963524] [2023-11-06 23:08:02,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714963524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:02,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:02,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:08:02,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082697882] [2023-11-06 23:08:02,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:02,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:08:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:08:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:08:02,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 503 [2023-11-06 23:08:02,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 23:08:02,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:02,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 503 [2023-11-06 23:08:02,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:02,797 INFO L124 PetriNetUnfolderBase]: 449/747 cut-off events. [2023-11-06 23:08:02,797 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-11-06 23:08:02,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 747 events. 449/747 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3124 event pairs, 13 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 2363. Up to 580 conditions per place. [2023-11-06 23:08:02,802 INFO L140 encePairwiseOnDemand]: 501/503 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-11-06 23:08:02,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 701 flow [2023-11-06 23:08:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:08:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:08:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 743 transitions. [2023-11-06 23:08:02,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923790589794566 [2023-11-06 23:08:02,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 743 transitions. [2023-11-06 23:08:02,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 743 transitions. [2023-11-06 23:08:02,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:02,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 743 transitions. [2023-11-06 23:08:02,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 23:08:02,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:08:02,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 503.0) internal successors, (2012), 4 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 23:08:02,815 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 476 flow. Second operand 3 states and 743 transitions. [2023-11-06 23:08:02,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 701 flow [2023-11-06 23:08:02,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 666 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 23:08:02,825 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 449 flow [2023-11-06 23:08:02,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-11-06 23:08:02,826 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-11-06 23:08:02,826 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 449 flow [2023-11-06 23:08:02,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 23:08:02,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:02,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:02,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 23:08:02,827 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:08:02,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:02,827 INFO L85 PathProgramCache]: Analyzing trace with hash 823377843, now seen corresponding path program 1 times [2023-11-06 23:08:02,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:02,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040879308] [2023-11-06 23:08:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:02,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:02,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:02,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040879308] [2023-11-06 23:08:02,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040879308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:02,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892012250] [2023-11-06 23:08:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:02,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:02,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:02,963 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:02,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:08:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:03,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:08:03,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:03,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:08:03,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892012250] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:03,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:03,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2023-11-06 23:08:03,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980164031] [2023-11-06 23:08:03,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:03,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 23:08:03,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:03,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 23:08:03,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:08:04,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 503 [2023-11-06 23:08:04,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 449 flow. Second operand has 16 states, 16 states have (on average 215.75) internal successors, (3452), 16 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states 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 23:08:04,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:04,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 503 [2023-11-06 23:08:04,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:04,751 INFO L124 PetriNetUnfolderBase]: 319/557 cut-off events. [2023-11-06 23:08:04,752 INFO L125 PetriNetUnfolderBase]: For 712/712 co-relation queries the response was YES. [2023-11-06 23:08:04,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 557 events. 319/557 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2262 event pairs, 73 based on Foata normal form. 30/577 useless extension candidates. Maximal degree in co-relation 1756. Up to 199 conditions per place. [2023-11-06 23:08:04,755 INFO L140 encePairwiseOnDemand]: 494/503 looper letters, 52 selfloop transitions, 21 changer transitions 98/171 dead transitions. [2023-11-06 23:08:04,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 171 transitions, 1259 flow [2023-11-06 23:08:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 23:08:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 23:08:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4176 transitions. [2023-11-06 23:08:04,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369572041435597 [2023-11-06 23:08:04,769 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4176 transitions. [2023-11-06 23:08:04,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4176 transitions. [2023-11-06 23:08:04,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:04,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4176 transitions. [2023-11-06 23:08:04,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 219.78947368421052) internal successors, (4176), 19 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states 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 23:08:04,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 503.0) internal successors, (10060), 20 states have internal predecessors, (10060), 0 states have call successors, (0), 0 states 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 23:08:04,808 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 503.0) internal successors, (10060), 20 states have internal predecessors, (10060), 0 states have call successors, (0), 0 states 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 23:08:04,808 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 449 flow. Second operand 19 states and 4176 transitions. [2023-11-06 23:08:04,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 171 transitions, 1259 flow [2023-11-06 23:08:04,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 171 transitions, 1255 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:08:04,859 INFO L231 Difference]: Finished difference. Result has 93 places, 64 transitions, 494 flow [2023-11-06 23:08:04,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=494, PETRI_PLACES=93, PETRI_TRANSITIONS=64} [2023-11-06 23:08:04,860 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-11-06 23:08:04,860 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 64 transitions, 494 flow [2023-11-06 23:08:04,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 215.75) internal successors, (3452), 16 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states 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 23:08:04,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:04,861 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-11-06 23:08:04,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 23:08:05,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:05,067 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:08:05,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1451409160, now seen corresponding path program 2 times [2023-11-06 23:08:05,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:05,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105753945] [2023-11-06 23:08:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:05,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:05,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105753945] [2023-11-06 23:08:05,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105753945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:05,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097602217] [2023-11-06 23:08:05,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:08:05,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:05,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:05,315 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:05,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:08:05,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:08:05,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:08:05,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:08:05,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 23:08:05,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:05,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097602217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:05,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:08:05,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-11-06 23:08:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243311131] [2023-11-06 23:08:05,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:05,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:08:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:08:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:08:05,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 503 [2023-11-06 23:08:05,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 64 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 23:08:05,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:05,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 503 [2023-11-06 23:08:05,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:05,648 INFO L124 PetriNetUnfolderBase]: 147/266 cut-off events. [2023-11-06 23:08:05,648 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2023-11-06 23:08:05,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 266 events. 147/266 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 744 event pairs, 65 based on Foata normal form. 3/259 useless extension candidates. Maximal degree in co-relation 1023. Up to 210 conditions per place. [2023-11-06 23:08:05,651 INFO L140 encePairwiseOnDemand]: 500/503 looper letters, 46 selfloop transitions, 10 changer transitions 6/62 dead transitions. [2023-11-06 23:08:05,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 62 transitions, 567 flow [2023-11-06 23:08:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:08:05,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:08:05,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 954 transitions. [2023-11-06 23:08:05,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474155069582505 [2023-11-06 23:08:05,654 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 954 transitions. [2023-11-06 23:08:05,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 954 transitions. [2023-11-06 23:08:05,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:05,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 954 transitions. [2023-11-06 23:08:05,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states 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 23:08:05,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 23:08:05,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 503.0) internal successors, (2515), 5 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 23:08:05,661 INFO L175 Difference]: Start difference. First operand has 93 places, 64 transitions, 494 flow. Second operand 4 states and 954 transitions. [2023-11-06 23:08:05,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 62 transitions, 567 flow [2023-11-06 23:08:05,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 427 flow, removed 15 selfloop flow, removed 27 redundant places. [2023-11-06 23:08:05,666 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 287 flow [2023-11-06 23:08:05,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-11-06 23:08:05,667 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-11-06 23:08:05,667 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 287 flow [2023-11-06 23:08:05,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 23:08:05,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:08:05,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:05,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:05,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:05,874 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 23:08:05,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:05,875 INFO L85 PathProgramCache]: Analyzing trace with hash 236332353, now seen corresponding path program 2 times [2023-11-06 23:08:05,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:08:05,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877963087] [2023-11-06 23:08:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:05,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:08:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 23:08:05,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:08:05,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877963087] [2023-11-06 23:08:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877963087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767537253] [2023-11-06 23:08:05,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:08:05,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:05,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:05,939 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:08:05,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:08:06,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 23:08:06,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:08:06,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:08:06,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:08:06,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:08:06,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767537253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:08:06,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:08:06,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-11-06 23:08:06,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375335879] [2023-11-06 23:08:06,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:08:06,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:08:06,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:08:06,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:08:06,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:08:06,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 503 [2023-11-06 23:08:06,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 239.66666666666666) internal successors, (1438), 6 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 23:08:06,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:08:06,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 503 [2023-11-06 23:08:06,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:08:06,343 INFO L124 PetriNetUnfolderBase]: 163/266 cut-off events. [2023-11-06 23:08:06,343 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2023-11-06 23:08:06,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 266 events. 163/266 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 715 event pairs, 15 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 801. Up to 88 conditions per place. [2023-11-06 23:08:06,344 INFO L140 encePairwiseOnDemand]: 498/503 looper letters, 0 selfloop transitions, 0 changer transitions 86/86 dead transitions. [2023-11-06 23:08:06,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 86 transitions, 564 flow [2023-11-06 23:08:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:08:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:08:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1460 transitions. [2023-11-06 23:08:06,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48376408217362493 [2023-11-06 23:08:06,349 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1460 transitions. [2023-11-06 23:08:06,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1460 transitions. [2023-11-06 23:08:06,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:08:06,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1460 transitions. [2023-11-06 23:08:06,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 23:08:06,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 503.0) internal successors, (3521), 7 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states 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 23:08:06,359 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 503.0) internal successors, (3521), 7 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states 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 23:08:06,360 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 287 flow. Second operand 6 states and 1460 transitions. [2023-11-06 23:08:06,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 86 transitions, 564 flow [2023-11-06 23:08:06,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 86 transitions, 523 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 23:08:06,363 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-11-06 23:08:06,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=503, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-11-06 23:08:06,363 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2023-11-06 23:08:06,363 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-11-06 23:08:06,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.66666666666666) internal successors, (1438), 6 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 23:08:06,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2023-11-06 23:08:06,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-11-06 23:08:06,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-11-06 23:08:06,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-11-06 23:08:06,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-11-06 23:08:06,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-11-06 23:08:06,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-11-06 23:08:06,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-11-06 23:08:06,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-11-06 23:08:06,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-11-06 23:08:06,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-11-06 23:08:06,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-11-06 23:08:06,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2023-11-06 23:08:06,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-11-06 23:08:06,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-11-06 23:08:06,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-11-06 23:08:06,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-11-06 23:08:06,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-11-06 23:08:06,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-11-06 23:08:06,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-11-06 23:08:06,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-11-06 23:08:06,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-11-06 23:08:06,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:06,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:08:06,577 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:06,583 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:08:06,584 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:08:06,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:08:06 BasicIcfg [2023-11-06 23:08:06,588 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:08:06,588 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:08:06,589 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:08:06,589 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:08:06,589 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:38" (3/4) ... [2023-11-06 23:08:06,591 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:08:06,595 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:08:06,595 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:08:06,604 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-06 23:08:06,605 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:08:06,605 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:08:06,606 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:08:06,681 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:08:06,682 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:08:06,682 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:08:06,683 INFO L158 Benchmark]: Toolchain (without parser) took 29254.98ms. Allocated memory was 155.2MB in the beginning and 295.7MB in the end (delta: 140.5MB). Free memory was 108.3MB in the beginning and 90.2MB in the end (delta: 18.0MB). Peak memory consumption was 160.1MB. Max. memory is 16.1GB. [2023-11-06 23:08:06,683 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 89.7MB in the beginning and 89.7MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:08:06,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.14ms. Allocated memory is still 155.2MB. Free memory was 107.6MB in the beginning and 95.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:08:06,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.93ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 93.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:08:06,684 INFO L158 Benchmark]: Boogie Preprocessor took 44.35ms. Allocated memory is still 155.2MB. Free memory was 93.6MB in the beginning and 92.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:08:06,685 INFO L158 Benchmark]: RCFGBuilder took 717.61ms. Allocated memory is still 155.2MB. Free memory was 92.1MB in the beginning and 70.5MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 23:08:06,685 INFO L158 Benchmark]: TraceAbstraction took 28033.60ms. Allocated memory was 155.2MB in the beginning and 295.7MB in the end (delta: 140.5MB). Free memory was 69.9MB in the beginning and 94.5MB in the end (delta: -24.7MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. [2023-11-06 23:08:06,685 INFO L158 Benchmark]: Witness Printer took 93.88ms. Allocated memory is still 295.7MB. Free memory was 94.5MB in the beginning and 90.2MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:08:06,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 89.7MB in the beginning and 89.7MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.14ms. Allocated memory is still 155.2MB. Free memory was 107.6MB in the beginning and 95.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.93ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 93.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.35ms. Allocated memory is still 155.2MB. Free memory was 93.6MB in the beginning and 92.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 717.61ms. Allocated memory is still 155.2MB. Free memory was 92.1MB in the beginning and 70.5MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 28033.60ms. Allocated memory was 155.2MB in the beginning and 295.7MB in the end (delta: 140.5MB). Free memory was 69.9MB in the beginning and 94.5MB in the end (delta: -24.7MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. * Witness Printer took 93.88ms. Allocated memory is still 295.7MB. Free memory was 94.5MB in the beginning and 90.2MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.3s, 207 PlacesBefore, 36 PlacesAfterwards, 218 TransitionsBefore, 36 TransitionsAfterwards, 4212 CoEnabledTransitionPairs, 8 FixpointIterations, 120 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 17 ConcurrentYvCompositions, 11 ChoiceCompositions, 245 TotalNumberOfCompositions, 5552 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5282, independent: 5178, independent conditional: 0, independent unconditional: 5178, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2509, independent: 2491, independent conditional: 0, independent unconditional: 2491, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5282, independent: 2687, independent conditional: 0, independent unconditional: 2687, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 2509, unknown conditional: 0, unknown unconditional: 2509] , Statistics on independence cache: Total cache size (in pairs): 97, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: 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: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: 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, 310 locations, 22 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: 27.8s, OverallIterations: 21, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3799 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2725 mSDsluCounter, 1516 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1086 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7807 IncrementalHoareTripleChecker+Invalid, 8005 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 430 mSDtfsCounter, 7807 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 93 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=572occurred in iteration=11, InterpolantAutomatonStates: 127, 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, 0.5s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 258 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 1054 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1334 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 37 InterpolantComputations, 15 PerfectInterpolantSequences, 116/231 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:08:06,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d59dea7-732a-494d-b50a-f931f90c2c4c/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