./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/reorder_5.i --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_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/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_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/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_780135f2-a7f3-435d-a520-f30f265c6206/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 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:50:20,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:50:20,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:50:20,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:50:20,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:50:20,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:50:20,833 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:50:20,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:50:20,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:50:20,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:50:20,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:50:20,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:50:20,838 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:50:20,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:50:20,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:50:20,840 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:50:20,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:50:20,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:50:20,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:50:20,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:50:20,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:50:20,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:50:20,845 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:50:20,846 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:50:20,846 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:50:20,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:50:20,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:50:20,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:50:20,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:50:20,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:50:20,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:20,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:50:20,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:50:20,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:50:20,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:50:20,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:50:20,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:50:20,852 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:50:20,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:50:20,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:50:20,853 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:50:20,854 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_780135f2-a7f3-435d-a520-f30f265c6206/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 [2023-11-06 22:50:21,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:50:21,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:50:21,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:50:21,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:50:21,144 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:50:21,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/reorder_5.i [2023-11-06 22:50:24,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:50:24,649 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:50:24,650 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/sv-benchmarks/c/pthread/reorder_5.i [2023-11-06 22:50:24,673 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/data/bfd1ddd0b/0721ae7abc614cfda6a0f450d2a282f6/FLAG8a5aea32a [2023-11-06 22:50:24,688 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/data/bfd1ddd0b/0721ae7abc614cfda6a0f450d2a282f6 [2023-11-06 22:50:24,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:50:24,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:50:24,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:24,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:50:24,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:50:24,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:24" (1/1) ... [2023-11-06 22:50:24,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8d5776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:24, skipping insertion in model container [2023-11-06 22:50:24,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:24" (1/1) ... [2023-11-06 22:50:24,762 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:50:25,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:25,483 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:50:25,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:25,667 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:50:25,675 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:50:25,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25 WrapperNode [2023-11-06 22:50:25,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:25,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:25,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:50:25,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:50:25,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,756 INFO L138 Inliner]: procedures = 371, calls = 48, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 185 [2023-11-06 22:50:25,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:25,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:50:25,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:50:25,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:50:25,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:50:25,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:50:25,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:50:25,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:50:25,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (1/1) ... [2023-11-06 22:50:25,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:25,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:50:25,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:50:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-06 22:50:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:50:25,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:50:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:50:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:50:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-11-06 22:50:25,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-11-06 22:50:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:50:25,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:50:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-11-06 22:50:25,893 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-11-06 22:50:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:50:25,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:50:25,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:50:25,895 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:50:26,058 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:50:26,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:50:26,522 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:50:26,533 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:50:26,541 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:50:26,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:26 BoogieIcfgContainer [2023-11-06 22:50:26,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:50:26,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:50:26,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:50:26,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:50:26,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:50:24" (1/3) ... [2023-11-06 22:50:26,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244df6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:26, skipping insertion in model container [2023-11-06 22:50:26,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:25" (2/3) ... [2023-11-06 22:50:26,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244df6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:26, skipping insertion in model container [2023-11-06 22:50:26,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:26" (3/3) ... [2023-11-06 22:50:26,555 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2023-11-06 22:50:26,567 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:50:26,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:50:26,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:50:26,580 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:50:26,661 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:50:26,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 205 transitions, 430 flow [2023-11-06 22:50:26,849 INFO L124 PetriNetUnfolderBase]: 37/415 cut-off events. [2023-11-06 22:50:26,850 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:50:26,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 415 events. 37/415 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1518 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-11-06 22:50:26,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 205 transitions, 430 flow [2023-11-06 22:50:26,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 205 transitions, 430 flow [2023-11-06 22:50:26,875 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:50:26,887 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 205 transitions, 430 flow [2023-11-06 22:50:26,890 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 205 transitions, 430 flow [2023-11-06 22:50:26,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 205 transitions, 430 flow [2023-11-06 22:50:27,004 INFO L124 PetriNetUnfolderBase]: 37/415 cut-off events. [2023-11-06 22:50:27,005 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:50:27,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 415 events. 37/415 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1518 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-11-06 22:50:27,017 INFO L119 LiptonReduction]: Number of co-enabled transitions 3010 [2023-11-06 22:50:46,326 INFO L134 LiptonReduction]: Checked pairs total: 4860 [2023-11-06 22:50:46,327 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-11-06 22:50:46,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:50:46,350 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;@a3d0cbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:50:46,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-06 22:50:46,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:50:46,356 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-06 22:50:46,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:50:46,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:46,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:50:46,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:50:46,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 22967519, now seen corresponding path program 1 times [2023-11-06 22:50:46,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:46,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285590671] [2023-11-06 22:50:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:46,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:46,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:46,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285590671] [2023-11-06 22:50:46,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285590671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:46,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:50:46,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061719928] [2023-11-06 22:50:46,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:46,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:47,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:47,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 427 [2023-11-06 22:50:47,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:47,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:47,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 427 [2023-11-06 22:50:47,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:47,255 INFO L124 PetriNetUnfolderBase]: 114/284 cut-off events. [2023-11-06 22:50:47,255 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-06 22:50:47,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 284 events. 114/284 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1147 event pairs, 54 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 392. Up to 143 conditions per place. [2023-11-06 22:50:47,259 INFO L140 encePairwiseOnDemand]: 410/427 looper letters, 30 selfloop transitions, 7 changer transitions 6/47 dead transitions. [2023-11-06 22:50:47,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 212 flow [2023-11-06 22:50:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-11-06 22:50:47,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519906323185012 [2023-11-06 22:50:47,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-11-06 22:50:47,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-11-06 22:50:47,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:47,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-11-06 22:50:47,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:47,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:47,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:47,302 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 88 flow. Second operand 3 states and 579 transitions. [2023-11-06 22:50:47,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 212 flow [2023-11-06 22:50:47,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:50:47,309 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 120 flow [2023-11-06 22:50:47,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-06 22:50:47,315 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-11-06 22:50:47,315 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 120 flow [2023-11-06 22:50:47,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:47,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:47,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:50:47,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:50:47,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:50:47,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:47,317 INFO L85 PathProgramCache]: Analyzing trace with hash 596971315, now seen corresponding path program 1 times [2023-11-06 22:50:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:47,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665776963] [2023-11-06 22:50:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:47,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:50:47,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:50:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:50:47,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:50:47,450 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:50:47,452 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-06 22:50:47,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-06 22:50:47,454 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-06 22:50:47,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-06 22:50:47,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-06 22:50:47,455 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-06 22:50:47,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-06 22:50:47,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-06 22:50:47,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-06 22:50:47,456 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-06 22:50:47,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:50:47,457 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:50:47,460 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:50:47,460 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:50:47,490 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-06 22:50:47,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 226 transitions, 496 flow [2023-11-06 22:50:47,815 INFO L124 PetriNetUnfolderBase]: 149/1344 cut-off events. [2023-11-06 22:50:47,815 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 22:50:47,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 1344 events. 149/1344 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7627 event pairs, 1 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 768. Up to 32 conditions per place. [2023-11-06 22:50:47,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 226 transitions, 496 flow [2023-11-06 22:50:47,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 226 transitions, 496 flow [2023-11-06 22:50:47,829 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:50:47,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 226 transitions, 496 flow [2023-11-06 22:50:47,829 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 226 transitions, 496 flow [2023-11-06 22:50:47,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 226 transitions, 496 flow [2023-11-06 22:50:48,028 INFO L124 PetriNetUnfolderBase]: 149/1344 cut-off events. [2023-11-06 22:50:48,029 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 22:50:48,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 1344 events. 149/1344 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7627 event pairs, 1 based on Foata normal form. 0/1132 useless extension candidates. Maximal degree in co-relation 768. Up to 32 conditions per place. [2023-11-06 22:50:48,065 INFO L119 LiptonReduction]: Number of co-enabled transitions 6760 [2023-11-06 22:51:06,589 INFO L134 LiptonReduction]: Checked pairs total: 12750 [2023-11-06 22:51:06,590 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-11-06 22:51:06,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:06,594 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;@a3d0cbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:06,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-06 22:51:06,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:06,598 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-06 22:51:06,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:06,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:06,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:06,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:51:06,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1162556172, now seen corresponding path program 1 times [2023-11-06 22:51:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310781642] [2023-11-06 22:51:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:06,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310781642] [2023-11-06 22:51:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310781642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:06,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:06,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:06,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993690277] [2023-11-06 22:51:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:06,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:06,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:06,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:06,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 453 [2023-11-06 22:51:06,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:06,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:06,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 453 [2023-11-06 22:51:06,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:07,578 INFO L124 PetriNetUnfolderBase]: 3430/5756 cut-off events. [2023-11-06 22:51:07,578 INFO L125 PetriNetUnfolderBase]: For 734/734 co-relation queries the response was YES. [2023-11-06 22:51:07,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11769 conditions, 5756 events. 3430/5756 cut-off events. For 734/734 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 33589 event pairs, 1472 based on Foata normal form. 0/4883 useless extension candidates. Maximal degree in co-relation 8032. Up to 3364 conditions per place. [2023-11-06 22:51:07,619 INFO L140 encePairwiseOnDemand]: 436/453 looper letters, 55 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2023-11-06 22:51:07,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 340 flow [2023-11-06 22:51:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-11-06 22:51:07,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093451066961 [2023-11-06 22:51:07,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-11-06 22:51:07,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-11-06 22:51:07,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:07,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-11-06 22:51:07,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:07,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:07,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:07,637 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 134 flow. Second operand 3 states and 640 transitions. [2023-11-06 22:51:07,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 340 flow [2023-11-06 22:51:07,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:07,648 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 208 flow [2023-11-06 22:51:07,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-11-06 22:51:07,649 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-06 22:51:07,649 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 208 flow [2023-11-06 22:51:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:07,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:07,651 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:51:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:51:07,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:51:07,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2035554454, now seen corresponding path program 1 times [2023-11-06 22:51:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:07,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582503759] [2023-11-06 22:51:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:07,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:07,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:07,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582503759] [2023-11-06 22:51:07,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582503759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:07,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:07,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:07,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956904188] [2023-11-06 22:51:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:07,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:07,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:07,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:07,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:07,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 453 [2023-11-06 22:51:07,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:07,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:07,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 453 [2023-11-06 22:51:07,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:08,533 INFO L124 PetriNetUnfolderBase]: 2862/4885 cut-off events. [2023-11-06 22:51:08,534 INFO L125 PetriNetUnfolderBase]: For 1881/1881 co-relation queries the response was YES. [2023-11-06 22:51:08,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11326 conditions, 4885 events. 2862/4885 cut-off events. For 1881/1881 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 28120 event pairs, 2621 based on Foata normal form. 0/4728 useless extension candidates. Maximal degree in co-relation 3413. Up to 4525 conditions per place. [2023-11-06 22:51:08,572 INFO L140 encePairwiseOnDemand]: 448/453 looper letters, 40 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-06 22:51:08,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 274 flow [2023-11-06 22:51:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-11-06 22:51:08,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451802796173657 [2023-11-06 22:51:08,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-11-06 22:51:08,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-11-06 22:51:08,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:08,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-11-06 22:51:08,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,584 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 208 flow. Second operand 3 states and 605 transitions. [2023-11-06 22:51:08,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 274 flow [2023-11-06 22:51:08,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:08,594 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 178 flow [2023-11-06 22:51:08,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-11-06 22:51:08,597 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2023-11-06 22:51:08,598 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 178 flow [2023-11-06 22:51:08,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:08,599 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:51:08,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:51:08,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:51:08,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:08,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2035554455, now seen corresponding path program 1 times [2023-11-06 22:51:08,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:08,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42110423] [2023-11-06 22:51:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:08,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:08,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:08,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42110423] [2023-11-06 22:51:08,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42110423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:08,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033109394] [2023-11-06 22:51:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:08,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:08,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:08,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:08,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:51:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:09,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:51:09,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:09,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:09,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033109394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:09,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:51:09,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2023-11-06 22:51:09,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210874363] [2023-11-06 22:51:09,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:09,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:51:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:09,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:51:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:51:10,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 453 [2023-11-06 22:51:10,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 178 flow. Second operand has 9 states, 9 states have (on average 185.33333333333334) internal successors, (1668), 9 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:10,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:10,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 453 [2023-11-06 22:51:10,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:10,859 INFO L124 PetriNetUnfolderBase]: 2875/5057 cut-off events. [2023-11-06 22:51:10,860 INFO L125 PetriNetUnfolderBase]: For 1312/1312 co-relation queries the response was YES. [2023-11-06 22:51:10,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11161 conditions, 5057 events. 2875/5057 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 29543 event pairs, 1014 based on Foata normal form. 0/5053 useless extension candidates. Maximal degree in co-relation 11149. Up to 2085 conditions per place. [2023-11-06 22:51:10,881 INFO L140 encePairwiseOnDemand]: 441/453 looper letters, 28 selfloop transitions, 7 changer transitions 67/106 dead transitions. [2023-11-06 22:51:10,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 106 transitions, 578 flow [2023-11-06 22:51:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:51:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:51:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1389 transitions. [2023-11-06 22:51:10,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380321665089877 [2023-11-06 22:51:10,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1389 transitions. [2023-11-06 22:51:10,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1389 transitions. [2023-11-06 22:51:10,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:10,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1389 transitions. [2023-11-06 22:51:10,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.42857142857142) internal successors, (1389), 7 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:10,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:10,904 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:10,904 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 178 flow. Second operand 7 states and 1389 transitions. [2023-11-06 22:51:10,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 106 transitions, 578 flow [2023-11-06 22:51:10,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 106 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:10,910 INFO L231 Difference]: Finished difference. Result has 46 places, 24 transitions, 99 flow [2023-11-06 22:51:10,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=99, PETRI_PLACES=46, PETRI_TRANSITIONS=24} [2023-11-06 22:51:10,911 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-11-06 22:51:10,911 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 24 transitions, 99 flow [2023-11-06 22:51:10,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 185.33333333333334) internal successors, (1668), 9 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:10,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:10,913 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:51:10,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:11,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:11,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:51:11,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1957748860, now seen corresponding path program 1 times [2023-11-06 22:51:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:11,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101827129] [2023-11-06 22:51:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:11,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:11,210 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:51:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:51:11,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:51:11,241 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:51:11,242 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-06 22:51:11,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-11-06 22:51:11,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-06 22:51:11,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-06 22:51:11,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-06 22:51:11,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-06 22:51:11,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-06 22:51:11,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-06 22:51:11,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-06 22:51:11,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-06 22:51:11,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:51:11,244 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:51:11,245 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:51:11,245 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:51:11,300 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-06 22:51:11,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 247 transitions, 566 flow [2023-11-06 22:51:12,063 INFO L124 PetriNetUnfolderBase]: 641/4631 cut-off events. [2023-11-06 22:51:12,063 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-06 22:51:12,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 4631 events. 641/4631 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 36310 event pairs, 32 based on Foata normal form. 0/3896 useless extension candidates. Maximal degree in co-relation 2644. Up to 192 conditions per place. [2023-11-06 22:51:12,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 247 transitions, 566 flow [2023-11-06 22:51:12,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 247 transitions, 566 flow [2023-11-06 22:51:12,122 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:51:12,122 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 233 places, 247 transitions, 566 flow [2023-11-06 22:51:12,122 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 233 places, 247 transitions, 566 flow [2023-11-06 22:51:12,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 247 transitions, 566 flow [2023-11-06 22:51:12,903 INFO L124 PetriNetUnfolderBase]: 641/4631 cut-off events. [2023-11-06 22:51:12,903 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-06 22:51:12,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5067 conditions, 4631 events. 641/4631 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 36310 event pairs, 32 based on Foata normal form. 0/3896 useless extension candidates. Maximal degree in co-relation 2644. Up to 192 conditions per place. [2023-11-06 22:51:13,028 INFO L119 LiptonReduction]: Number of co-enabled transitions 11250 [2023-11-06 22:51:30,387 INFO L134 LiptonReduction]: Checked pairs total: 21331 [2023-11-06 22:51:30,388 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-11-06 22:51:30,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:30,391 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;@a3d0cbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:30,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-06 22:51:30,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:30,395 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-06 22:51:30,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:30,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:30,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:30,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:51:30,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:30,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1647114240, now seen corresponding path program 1 times [2023-11-06 22:51:30,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:30,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117097433] [2023-11-06 22:51:30,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:30,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:30,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:30,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117097433] [2023-11-06 22:51:30,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117097433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:30,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:30,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:30,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417311464] [2023-11-06 22:51:30,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:30,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:30,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:30,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 489 [2023-11-06 22:51:30,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:30,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:30,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 489 [2023-11-06 22:51:30,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:41,530 INFO L124 PetriNetUnfolderBase]: 71292/102662 cut-off events. [2023-11-06 22:51:41,530 INFO L125 PetriNetUnfolderBase]: For 11541/11541 co-relation queries the response was YES. [2023-11-06 22:51:41,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210631 conditions, 102662 events. 71292/102662 cut-off events. For 11541/11541 co-relation queries the response was YES. Maximal size of possible extension queue 2167. Compared 699162 event pairs, 23588 based on Foata normal form. 0/89015 useless extension candidates. Maximal degree in co-relation 67046. Up to 52638 conditions per place. [2023-11-06 22:51:42,397 INFO L140 encePairwiseOnDemand]: 470/489 looper letters, 78 selfloop transitions, 14 changer transitions 2/100 dead transitions. [2023-11-06 22:51:42,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 100 transitions, 496 flow [2023-11-06 22:51:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:51:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:51:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 882 transitions. [2023-11-06 22:51:42,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450920245398773 [2023-11-06 22:51:42,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 882 transitions. [2023-11-06 22:51:42,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 882 transitions. [2023-11-06 22:51:42,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:42,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 882 transitions. [2023-11-06 22:51:42,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.5) internal successors, (882), 4 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,418 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 180 flow. Second operand 4 states and 882 transitions. [2023-11-06 22:51:42,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 100 transitions, 496 flow [2023-11-06 22:51:42,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:42,459 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 294 flow [2023-11-06 22:51:42,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2023-11-06 22:51:42,462 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-06 22:51:42,462 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 294 flow [2023-11-06 22:51:42,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:42,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:42,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:51:42,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:51:42,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1647114238, now seen corresponding path program 1 times [2023-11-06 22:51:42,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:42,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30907902] [2023-11-06 22:51:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:42,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:42,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30907902] [2023-11-06 22:51:42,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30907902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:42,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:42,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:42,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40608984] [2023-11-06 22:51:42,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:42,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:42,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:42,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:42,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 489 [2023-11-06 22:51:42,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:42,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 489 [2023-11-06 22:51:42,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:51,222 INFO L124 PetriNetUnfolderBase]: 58987/85935 cut-off events. [2023-11-06 22:51:51,223 INFO L125 PetriNetUnfolderBase]: For 37272/37272 co-relation queries the response was YES. [2023-11-06 22:51:51,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197954 conditions, 85935 events. 58987/85935 cut-off events. For 37272/37272 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 586718 event pairs, 28733 based on Foata normal form. 2653/86087 useless extension candidates. Maximal degree in co-relation 63756. Up to 53020 conditions per place. [2023-11-06 22:51:51,992 INFO L140 encePairwiseOnDemand]: 477/489 looper letters, 71 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2023-11-06 22:51:51,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 518 flow [2023-11-06 22:51:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-11-06 22:51:51,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46966598500340834 [2023-11-06 22:51:51,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-11-06 22:51:51,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-11-06 22:51:51,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:51,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-11-06 22:51:52,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,004 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 294 flow. Second operand 3 states and 689 transitions. [2023-11-06 22:51:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 518 flow [2023-11-06 22:51:52,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:51:52,192 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 294 flow [2023-11-06 22:51:52,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-11-06 22:51:52,194 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-11-06 22:51:52,194 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 294 flow [2023-11-06 22:51:52,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:52,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:52,195 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:51:52,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:51:52,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:51:52,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 367205887, now seen corresponding path program 1 times [2023-11-06 22:51:52,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:52,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672136547] [2023-11-06 22:51:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:52,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:52,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672136547] [2023-11-06 22:51:52,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672136547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598530401] [2023-11-06 22:51:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:52,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:52,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:52,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:51:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:52,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:51:52,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:53,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:53,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598530401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:53,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:51:53,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 6 [2023-11-06 22:51:53,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531415733] [2023-11-06 22:51:53,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:53,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:51:53,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:53,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:51:53,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:51:53,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 489 [2023-11-06 22:51:53,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 294 flow. Second operand has 8 states, 8 states have (on average 198.25) internal successors, (1586), 8 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:53,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:53,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 489 [2023-11-06 22:51:53,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:04,316 INFO L124 PetriNetUnfolderBase]: 66734/98498 cut-off events. [2023-11-06 22:52:04,317 INFO L125 PetriNetUnfolderBase]: For 53659/53659 co-relation queries the response was YES. [2023-11-06 22:52:04,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233371 conditions, 98498 events. 66734/98498 cut-off events. For 53659/53659 co-relation queries the response was YES. Maximal size of possible extension queue 1852. Compared 690565 event pairs, 17345 based on Foata normal form. 0/98455 useless extension candidates. Maximal degree in co-relation 151089. Up to 36018 conditions per place. [2023-11-06 22:52:05,053 INFO L140 encePairwiseOnDemand]: 473/489 looper letters, 161 selfloop transitions, 37 changer transitions 3/207 dead transitions. [2023-11-06 22:52:05,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 207 transitions, 1278 flow [2023-11-06 22:52:05,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:52:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:52:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1585 transitions. [2023-11-06 22:52:05,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630441133508618 [2023-11-06 22:52:05,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1585 transitions. [2023-11-06 22:52:05,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1585 transitions. [2023-11-06 22:52:05,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:05,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1585 transitions. [2023-11-06 22:52:05,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 226.42857142857142) internal successors, (1585), 7 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:05,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:05,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:05,101 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 294 flow. Second operand 7 states and 1585 transitions. [2023-11-06 22:52:05,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 207 transitions, 1278 flow [2023-11-06 22:52:05,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 207 transitions, 1262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:52:05,384 INFO L231 Difference]: Finished difference. Result has 69 places, 85 transitions, 571 flow [2023-11-06 22:52:05,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=571, PETRI_PLACES=69, PETRI_TRANSITIONS=85} [2023-11-06 22:52:05,385 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2023-11-06 22:52:05,385 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 85 transitions, 571 flow [2023-11-06 22:52:05,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 198.25) internal successors, (1586), 8 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:05,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:05,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:52:05,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:05,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780135f2-a7f3-435d-a520-f30f265c6206/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:05,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-11-06 22:52:05,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:05,588 INFO L85 PathProgramCache]: Analyzing trace with hash 367205885, now seen corresponding path program 1 times [2023-11-06 22:52:05,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:05,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785197040] [2023-11-06 22:52:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:05,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:05,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:05,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785197040] [2023-11-06 22:52:05,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785197040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:05,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:05,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:52:05,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974842478] [2023-11-06 22:52:05,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:05,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:05,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 489 [2023-11-06 22:52:05,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 85 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:05,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:05,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 489 [2023-11-06 22:52:05,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand