./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/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_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/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_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/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 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:12,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:12,626 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:41:12,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:12,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:12,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:12,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:12,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:12,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:12,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:12,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:12,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:12,664 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:12,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:12,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:41:12,666 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:12,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:12,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:12,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:12,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:41:12,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:12,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:41:12,675 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:41:12,675 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:41:12,676 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:12,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:41:12,677 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:12,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:12,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:12,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:12,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:12,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:12,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:12,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:41:12,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:41:12,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:41:12,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:12,684 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:41:12,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:12,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:12,686 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:12,686 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_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018a1168c08743b2a9b9283b6137e1dcc53bdf8ab8362348f4bbe02762305c3 [2023-11-06 22:41:13,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:13,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:13,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:13,042 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:13,043 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:13,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2023-11-06 22:41:16,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:41:16,705 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:41:16,706 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2023-11-06 22:41:16,716 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/data/d9a3e329f/e0a1bece3f5e4a428e8553a772918350/FLAGb23bc375e [2023-11-06 22:41:16,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/data/d9a3e329f/e0a1bece3f5e4a428e8553a772918350 [2023-11-06 22:41:16,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:41:16,744 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:41:16,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:16,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:41:16,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:41:16,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:16" (1/1) ... [2023-11-06 22:41:16,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be49314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:16, skipping insertion in model container [2023-11-06 22:41:16,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:16" (1/1) ... [2023-11-06 22:41:16,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:41:17,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:17,073 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:41:17,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:17,120 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:41:17,121 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:41:17,130 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:41:17,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17 WrapperNode [2023-11-06 22:41:17,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:17,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:17,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:41:17,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:41:17,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,192 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 249 [2023-11-06 22:41:17,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:17,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:41:17,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:41:17,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:41:17,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:41:17,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:41:17,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:41:17,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:41:17,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (1/1) ... [2023-11-06 22:41:17,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:17,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:17,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:41:17,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:41:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:41:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:41:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:41:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:41:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:41:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:41:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:41:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:41:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:41:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:41:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:41:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:41:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:41:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:41:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:41:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:41:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:41:17,358 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 22:41:17,542 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:41:17,544 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:41:18,188 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:41:18,897 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:41:18,898 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:41:18,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:18 BoogieIcfgContainer [2023-11-06 22:41:18,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:41:18,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:41:18,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:41:18,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:41:18,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:16" (1/3) ... [2023-11-06 22:41:18,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c13a624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:18, skipping insertion in model container [2023-11-06 22:41:18,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:17" (2/3) ... [2023-11-06 22:41:18,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c13a624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:18, skipping insertion in model container [2023-11-06 22:41:18,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:18" (3/3) ... [2023-11-06 22:41:18,918 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2023-11-06 22:41:18,926 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:41:18,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:41:18,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 22:41:18,935 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:41:19,208 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:41:19,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 192 transitions, 405 flow [2023-11-06 22:41:19,358 INFO L124 PetriNetUnfolderBase]: 12/189 cut-off events. [2023-11-06 22:41:19,358 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:41:19,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 189 events. 12/189 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 249 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 138. Up to 2 conditions per place. [2023-11-06 22:41:19,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 192 transitions, 405 flow [2023-11-06 22:41:19,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 165 transitions, 345 flow [2023-11-06 22:41:19,384 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:41:19,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 165 transitions, 345 flow [2023-11-06 22:41:19,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 165 transitions, 345 flow [2023-11-06 22:41:19,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 165 transitions, 345 flow [2023-11-06 22:41:19,489 INFO L124 PetriNetUnfolderBase]: 11/165 cut-off events. [2023-11-06 22:41:19,489 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:41:19,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 11/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 257 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 138. Up to 2 conditions per place. [2023-11-06 22:41:19,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 4158 [2023-11-06 22:41:39,360 INFO L134 LiptonReduction]: Checked pairs total: 5250 [2023-11-06 22:41:39,360 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-11-06 22:41:39,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:41:39,383 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;@2aada858, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:41:39,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-06 22:41:39,387 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:41:39,388 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:41:39,388 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:41:39,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:39,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:41:39,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:41:39,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:39,396 INFO L85 PathProgramCache]: Analyzing trace with hash 35440, now seen corresponding path program 1 times [2023-11-06 22:41:39,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:39,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97246473] [2023-11-06 22:41:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:39,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:39,849 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 22:41:39,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:39,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97246473] [2023-11-06 22:41:39,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97246473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:39,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:39,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:41:39,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812519134] [2023-11-06 22:41:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:39,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:39,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:39,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 365 [2023-11-06 22:41:39,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:39,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 365 [2023-11-06 22:41:39,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:42,199 INFO L124 PetriNetUnfolderBase]: 7394/9217 cut-off events. [2023-11-06 22:41:42,199 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-11-06 22:41:42,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18629 conditions, 9217 events. 7394/9217 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 42187 event pairs, 3542 based on Foata normal form. 0/2027 useless extension candidates. Maximal degree in co-relation 16940. Up to 9135 conditions per place. [2023-11-06 22:41:42,305 INFO L140 encePairwiseOnDemand]: 354/365 looper letters, 38 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-11-06 22:41:42,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 185 flow [2023-11-06 22:41:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-11-06 22:41:42,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45844748858447487 [2023-11-06 22:41:42,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-11-06 22:41:42,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-11-06 22:41:42,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:42,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-11-06 22:41:42,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:42,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:42,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:42,354 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 502 transitions. [2023-11-06 22:41:42,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 185 flow [2023-11-06 22:41:42,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:41:42,370 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 111 flow [2023-11-06 22:41:42,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-06 22:41:42,380 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-11-06 22:41:42,380 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 111 flow [2023-11-06 22:41:42,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:42,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:42,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:41:42,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:41:42,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:41:42,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1099763, now seen corresponding path program 1 times [2023-11-06 22:41:42,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:42,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042334913] [2023-11-06 22:41:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:42,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:42,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:42,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042334913] [2023-11-06 22:41:42,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042334913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:42,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:42,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871743232] [2023-11-06 22:41:42,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:42,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:42,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 365 [2023-11-06 22:41:42,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:42,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:42,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 365 [2023-11-06 22:41:42,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:44,384 INFO L124 PetriNetUnfolderBase]: 7394/9216 cut-off events. [2023-11-06 22:41:44,385 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 22:41:44,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18534 conditions, 9216 events. 7394/9216 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 42194 event pairs, 3542 based on Foata normal form. 0/2027 useless extension candidates. Maximal degree in co-relation 18510. Up to 9131 conditions per place. [2023-11-06 22:41:44,477 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 37 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-11-06 22:41:44,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 187 flow [2023-11-06 22:41:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:44,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-11-06 22:41:44,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44931506849315067 [2023-11-06 22:41:44,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-11-06 22:41:44,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-11-06 22:41:44,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:44,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-11-06 22:41:44,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,499 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 111 flow. Second operand 3 states and 492 transitions. [2023-11-06 22:41:44,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 187 flow [2023-11-06 22:41:44,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 182 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:44,504 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 108 flow [2023-11-06 22:41:44,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-11-06 22:41:44,506 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-11-06 22:41:44,506 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 108 flow [2023-11-06 22:41:44,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:44,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:41:44,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:41:44,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:41:44,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1099764, now seen corresponding path program 1 times [2023-11-06 22:41:44,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:44,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034544881] [2023-11-06 22:41:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:44,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034544881] [2023-11-06 22:41:44,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034544881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:44,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973963504] [2023-11-06 22:41:44,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:44,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:44,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:44,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:41:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:41:44,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:45,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:45,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973963504] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:45,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:45,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:41:45,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912378925] [2023-11-06 22:41:45,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:45,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:45,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:45,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:45,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 365 [2023-11-06 22:41:45,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 152.14285714285714) internal successors, (1065), 7 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:45,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 365 [2023-11-06 22:41:45,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:46,746 INFO L124 PetriNetUnfolderBase]: 7397/9222 cut-off events. [2023-11-06 22:41:46,746 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:41:46,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18555 conditions, 9222 events. 7397/9222 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 42059 event pairs, 3542 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 18510. Up to 9137 conditions per place. [2023-11-06 22:41:46,809 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 37 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2023-11-06 22:41:46,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 230 flow [2023-11-06 22:41:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 955 transitions. [2023-11-06 22:41:46,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2023-11-06 22:41:46,814 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 955 transitions. [2023-11-06 22:41:46,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 955 transitions. [2023-11-06 22:41:46,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:46,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 955 transitions. [2023-11-06 22:41:46,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,826 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,826 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 108 flow. Second operand 6 states and 955 transitions. [2023-11-06 22:41:46,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 230 flow [2023-11-06 22:41:46,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:46,829 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 163 flow [2023-11-06 22:41:46,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-06 22:41:46,830 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-11-06 22:41:46,830 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 163 flow [2023-11-06 22:41:46,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.14285714285714) internal successors, (1065), 7 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:46,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:41:46,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:47,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:47,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:41:47,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:47,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1057103761, now seen corresponding path program 1 times [2023-11-06 22:41:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670050129] [2023-11-06 22:41:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,216 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 22:41:47,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670050129] [2023-11-06 22:41:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670050129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:47,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:47,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:47,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973693803] [2023-11-06 22:41:47,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:47,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:47,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:47,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 365 [2023-11-06 22:41:47,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:47,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 365 [2023-11-06 22:41:47,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:49,679 INFO L124 PetriNetUnfolderBase]: 8141/10619 cut-off events. [2023-11-06 22:41:49,679 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:41:49,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21397 conditions, 10619 events. 8141/10619 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 56173 event pairs, 3902 based on Foata normal form. 0/3099 useless extension candidates. Maximal degree in co-relation 21361. Up to 7775 conditions per place. [2023-11-06 22:41:49,767 INFO L140 encePairwiseOnDemand]: 352/365 looper letters, 89 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2023-11-06 22:41:49,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 454 flow [2023-11-06 22:41:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 817 transitions. [2023-11-06 22:41:49,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44767123287671234 [2023-11-06 22:41:49,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 817 transitions. [2023-11-06 22:41:49,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 817 transitions. [2023-11-06 22:41:49,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:49,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 817 transitions. [2023-11-06 22:41:49,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,784 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,784 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 163 flow. Second operand 5 states and 817 transitions. [2023-11-06 22:41:49,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 454 flow [2023-11-06 22:41:49,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 96 transitions, 433 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:49,792 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 183 flow [2023-11-06 22:41:49,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-11-06 22:41:49,799 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-06 22:41:49,800 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 183 flow [2023-11-06 22:41:49,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:49,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:41:49,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:41:49,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:41:49,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:49,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1595388118, now seen corresponding path program 1 times [2023-11-06 22:41:49,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:49,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507508521] [2023-11-06 22:41:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:49,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:49,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507508521] [2023-11-06 22:41:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507508521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:49,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:41:49,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074681155] [2023-11-06 22:41:49,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:49,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:49,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-11-06 22:41:49,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:49,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-11-06 22:41:49,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:51,921 INFO L124 PetriNetUnfolderBase]: 11306/14366 cut-off events. [2023-11-06 22:41:51,922 INFO L125 PetriNetUnfolderBase]: For 1550/1732 co-relation queries the response was YES. [2023-11-06 22:41:51,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32861 conditions, 14366 events. 11306/14366 cut-off events. For 1550/1732 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 73747 event pairs, 2556 based on Foata normal form. 174/4250 useless extension candidates. Maximal degree in co-relation 32827. Up to 8466 conditions per place. [2023-11-06 22:41:52,051 INFO L140 encePairwiseOnDemand]: 359/365 looper letters, 74 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-11-06 22:41:52,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 82 transitions, 422 flow [2023-11-06 22:41:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-11-06 22:41:52,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894977168949772 [2023-11-06 22:41:52,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-11-06 22:41:52,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-11-06 22:41:52,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:52,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-11-06 22:41:52,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,063 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 183 flow. Second operand 3 states and 536 transitions. [2023-11-06 22:41:52,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 82 transitions, 422 flow [2023-11-06 22:41:52,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 82 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:52,070 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 212 flow [2023-11-06 22:41:52,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-11-06 22:41:52,073 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2023-11-06 22:41:52,073 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 212 flow [2023-11-06 22:41:52,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:52,074 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:41:52,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:41:52,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:41:52,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:52,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1595583695, now seen corresponding path program 2 times [2023-11-06 22:41:52,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:52,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22200810] [2023-11-06 22:41:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:52,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:52,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:52,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22200810] [2023-11-06 22:41:52,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22200810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:52,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857895957] [2023-11-06 22:41:52,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:52,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:52,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:52,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:52,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:41:52,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:41:52,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:52,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:41:52,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:41:52,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:52,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857895957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:52,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:52,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:41:52,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332344189] [2023-11-06 22:41:52,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:52,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:52,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:52,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:52,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:41:52,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 365 [2023-11-06 22:41:52,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:52,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 365 [2023-11-06 22:41:52,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:54,848 INFO L124 PetriNetUnfolderBase]: 10778/13837 cut-off events. [2023-11-06 22:41:54,849 INFO L125 PetriNetUnfolderBase]: For 2971/3371 co-relation queries the response was YES. [2023-11-06 22:41:54,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33543 conditions, 13837 events. 10778/13837 cut-off events. For 2971/3371 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 72716 event pairs, 5884 based on Foata normal form. 329/4514 useless extension candidates. Maximal degree in co-relation 33514. Up to 13717 conditions per place. [2023-11-06 22:41:55,092 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 43 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2023-11-06 22:41:55,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 300 flow [2023-11-06 22:41:55,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-11-06 22:41:55,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45388127853881277 [2023-11-06 22:41:55,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-11-06 22:41:55,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-11-06 22:41:55,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:55,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-11-06 22:41:55,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,102 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 212 flow. Second operand 3 states and 497 transitions. [2023-11-06 22:41:55,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 300 flow [2023-11-06 22:41:55,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 280 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:41:55,109 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 194 flow [2023-11-06 22:41:55,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-11-06 22:41:55,110 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-06 22:41:55,110 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 194 flow [2023-11-06 22:41:55,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:55,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:55,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:55,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:41:55,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2082579760, now seen corresponding path program 1 times [2023-11-06 22:41:55,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:55,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903314944] [2023-11-06 22:41:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:55,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:55,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903314944] [2023-11-06 22:41:55,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903314944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:55,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:55,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:55,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001638491] [2023-11-06 22:41:55,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:55,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:55,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:55,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:55,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 365 [2023-11-06 22:41:55,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:55,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 365 [2023-11-06 22:41:55,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:57,223 INFO L124 PetriNetUnfolderBase]: 11794/14997 cut-off events. [2023-11-06 22:41:57,223 INFO L125 PetriNetUnfolderBase]: For 1710/1758 co-relation queries the response was YES. [2023-11-06 22:41:57,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35323 conditions, 14997 events. 11794/14997 cut-off events. For 1710/1758 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 78259 event pairs, 2433 based on Foata normal form. 16/4982 useless extension candidates. Maximal degree in co-relation 29065. Up to 9161 conditions per place. [2023-11-06 22:41:57,325 INFO L140 encePairwiseOnDemand]: 362/365 looper letters, 66 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-11-06 22:41:57,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 371 flow [2023-11-06 22:41:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-11-06 22:41:57,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730593607305936 [2023-11-06 22:41:57,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-11-06 22:41:57,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-11-06 22:41:57,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:57,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-11-06 22:41:57,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,336 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 194 flow. Second operand 3 states and 518 transitions. [2023-11-06 22:41:57,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 371 flow [2023-11-06 22:41:57,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:57,343 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 178 flow [2023-11-06 22:41:57,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-11-06 22:41:57,344 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-11-06 22:41:57,345 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 178 flow [2023-11-06 22:41:57,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:57,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:57,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:41:57,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:41:57,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2082579778, now seen corresponding path program 1 times [2023-11-06 22:41:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465824758] [2023-11-06 22:41:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:57,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:57,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:57,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465824758] [2023-11-06 22:41:57,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465824758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:57,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152058166] [2023-11-06 22:41:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:57,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:57,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:57,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:57,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:41:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:57,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:41:57,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:57,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:57,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152058166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:57,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:57,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-06 22:41:57,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921999792] [2023-11-06 22:41:57,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:57,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:41:57,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:41:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:41:58,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 365 [2023-11-06 22:41:58,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 178 flow. Second operand has 13 states, 13 states have (on average 142.53846153846155) internal successors, (1853), 13 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:58,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 365 [2023-11-06 22:41:58,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:01,118 INFO L124 PetriNetUnfolderBase]: 19398/24694 cut-off events. [2023-11-06 22:42:01,119 INFO L125 PetriNetUnfolderBase]: For 5309/5375 co-relation queries the response was YES. [2023-11-06 22:42:01,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58933 conditions, 24694 events. 19398/24694 cut-off events. For 5309/5375 co-relation queries the response was YES. Maximal size of possible extension queue 1907. Compared 134489 event pairs, 4638 based on Foata normal form. 628/9532 useless extension candidates. Maximal degree in co-relation 37447. Up to 7643 conditions per place. [2023-11-06 22:42:01,297 INFO L140 encePairwiseOnDemand]: 353/365 looper letters, 154 selfloop transitions, 16 changer transitions 0/172 dead transitions. [2023-11-06 22:42:01,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 172 transitions, 830 flow [2023-11-06 22:42:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:42:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:42:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1445 transitions. [2023-11-06 22:42:01,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398782343987823 [2023-11-06 22:42:01,304 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1445 transitions. [2023-11-06 22:42:01,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1445 transitions. [2023-11-06 22:42:01,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:01,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1445 transitions. [2023-11-06 22:42:01,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.55555555555554) internal successors, (1445), 9 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 365.0) internal successors, (3650), 10 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,320 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 365.0) internal successors, (3650), 10 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,320 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 178 flow. Second operand 9 states and 1445 transitions. [2023-11-06 22:42:01,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 172 transitions, 830 flow [2023-11-06 22:42:01,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 172 transitions, 812 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:01,337 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 271 flow [2023-11-06 22:42:01,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-11-06 22:42:01,341 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-11-06 22:42:01,343 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 271 flow [2023-11-06 22:42:01,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 142.53846153846155) internal successors, (1853), 13 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:01,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:42:01,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:01,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:01,551 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:42:01,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1595388114, now seen corresponding path program 1 times [2023-11-06 22:42:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:01,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490679064] [2023-11-06 22:42:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:02,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490679064] [2023-11-06 22:42:02,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490679064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:02,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502887368] [2023-11-06 22:42:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:02,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:02,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:02,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:02,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:42:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:02,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:42:02,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:02,311 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-06 22:42:02,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:42:02,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:42:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:02,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:02,492 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_170 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_170) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-11-06 22:42:02,530 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:02,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-06 22:42:02,549 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:02,550 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-06 22:42:02,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-06 22:42:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:42:02,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502887368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:02,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:02,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-06 22:42:02,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189890405] [2023-11-06 22:42:02,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:02,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:42:02,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:42:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=53, Unknown=1, NotChecked=14, Total=90 [2023-11-06 22:42:02,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 365 [2023-11-06 22:42:02,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:02,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:02,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 365 [2023-11-06 22:42:02,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:07,670 INFO L124 PetriNetUnfolderBase]: 22544/29449 cut-off events. [2023-11-06 22:42:07,671 INFO L125 PetriNetUnfolderBase]: For 27090/27234 co-relation queries the response was YES. [2023-11-06 22:42:07,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75439 conditions, 29449 events. 22544/29449 cut-off events. For 27090/27234 co-relation queries the response was YES. Maximal size of possible extension queue 2707. Compared 175659 event pairs, 7631 based on Foata normal form. 0/10422 useless extension candidates. Maximal degree in co-relation 52210. Up to 21443 conditions per place. [2023-11-06 22:42:07,896 INFO L140 encePairwiseOnDemand]: 352/365 looper letters, 71 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2023-11-06 22:42:07,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 98 transitions, 658 flow [2023-11-06 22:42:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:42:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:42:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1067 transitions. [2023-11-06 22:42:07,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3654109589041096 [2023-11-06 22:42:07,902 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1067 transitions. [2023-11-06 22:42:07,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1067 transitions. [2023-11-06 22:42:07,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:07,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1067 transitions. [2023-11-06 22:42:07,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.375) internal successors, (1067), 8 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:07,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 365.0) internal successors, (3285), 9 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:07,914 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 365.0) internal successors, (3285), 9 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:07,914 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 271 flow. Second operand 8 states and 1067 transitions. [2023-11-06 22:42:07,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 98 transitions, 658 flow [2023-11-06 22:42:07,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 643 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:42:07,955 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 449 flow [2023-11-06 22:42:07,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2023-11-06 22:42:07,956 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-11-06 22:42:07,957 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 449 flow [2023-11-06 22:42:07,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:07,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:07,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:42:07,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:08,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:08,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:42:08,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1595388120, now seen corresponding path program 1 times [2023-11-06 22:42:08,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:08,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842014921] [2023-11-06 22:42:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:08,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:08,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842014921] [2023-11-06 22:42:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842014921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:08,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385665793] [2023-11-06 22:42:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:08,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:08,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:08,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:08,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:42:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:08,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:42:08,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:08,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:42:08,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:08,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:08,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:08,893 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_196 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_196) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-11-06 22:42:08,913 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:08,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-06 22:42:08,923 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:08,924 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-06 22:42:08,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-06 22:42:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:42:08,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385665793] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:08,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:08,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-06 22:42:08,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667249400] [2023-11-06 22:42:08,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:08,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:42:08,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:42:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-11-06 22:42:08,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 365 [2023-11-06 22:42:08,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 449 flow. Second operand has 12 states, 12 states have (on average 125.25) internal successors, (1503), 12 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:08,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:08,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 365 [2023-11-06 22:42:08,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:13,195 INFO L124 PetriNetUnfolderBase]: 24176/31745 cut-off events. [2023-11-06 22:42:13,195 INFO L125 PetriNetUnfolderBase]: For 45001/45145 co-relation queries the response was YES. [2023-11-06 22:42:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83944 conditions, 31745 events. 24176/31745 cut-off events. For 45001/45145 co-relation queries the response was YES. Maximal size of possible extension queue 3329. Compared 195804 event pairs, 8397 based on Foata normal form. 2/11884 useless extension candidates. Maximal degree in co-relation 58975. Up to 23704 conditions per place. [2023-11-06 22:42:13,393 INFO L140 encePairwiseOnDemand]: 352/365 looper letters, 71 selfloop transitions, 28 changer transitions 0/101 dead transitions. [2023-11-06 22:42:13,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 758 flow [2023-11-06 22:42:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:42:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:42:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1066 transitions. [2023-11-06 22:42:13,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36506849315068496 [2023-11-06 22:42:13,407 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1066 transitions. [2023-11-06 22:42:13,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1066 transitions. [2023-11-06 22:42:13,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:13,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1066 transitions. [2023-11-06 22:42:13,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.25) internal successors, (1066), 8 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:13,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 365.0) internal successors, (3285), 9 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:13,420 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 365.0) internal successors, (3285), 9 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:13,420 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 449 flow. Second operand 8 states and 1066 transitions. [2023-11-06 22:42:13,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 758 flow [2023-11-06 22:42:13,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 739 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:13,468 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 514 flow [2023-11-06 22:42:13,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2023-11-06 22:42:13,470 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2023-11-06 22:42:13,470 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 514 flow [2023-11-06 22:42:13,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.25) internal successors, (1503), 12 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:13,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:13,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:13,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:13,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:13,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:42:13,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:13,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2082772624, now seen corresponding path program 1 times [2023-11-06 22:42:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515865039] [2023-11-06 22:42:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:14,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515865039] [2023-11-06 22:42:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515865039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:14,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192340749] [2023-11-06 22:42:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:14,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:14,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:14,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:42:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:14,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 22:42:14,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:14,423 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:42:14,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:14,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:14,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:14,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:42:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:14,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:14,701 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:14,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-06 22:42:14,715 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:14,716 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-11-06 22:42:14,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-11-06 22:42:14,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-06 22:42:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:14,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192340749] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:14,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:14,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-11-06 22:42:14,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35031705] [2023-11-06 22:42:14,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:14,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:42:14,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:14,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:42:14,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=190, Unknown=2, NotChecked=0, Total=240 [2023-11-06 22:42:15,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 365 [2023-11-06 22:42:15,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 514 flow. Second operand has 16 states, 16 states have (on average 122.3125) internal successors, (1957), 16 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:15,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:15,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 365 [2023-11-06 22:42:15,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:20,399 INFO L124 PetriNetUnfolderBase]: 24954/32179 cut-off events. [2023-11-06 22:42:20,399 INFO L125 PetriNetUnfolderBase]: For 60800/60800 co-relation queries the response was YES. [2023-11-06 22:42:20,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87981 conditions, 32179 events. 24954/32179 cut-off events. For 60800/60800 co-relation queries the response was YES. Maximal size of possible extension queue 3282. Compared 189520 event pairs, 7792 based on Foata normal form. 19/12361 useless extension candidates. Maximal degree in co-relation 62979. Up to 23902 conditions per place. [2023-11-06 22:42:20,614 INFO L140 encePairwiseOnDemand]: 353/365 looper letters, 103 selfloop transitions, 38 changer transitions 0/143 dead transitions. [2023-11-06 22:42:20,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 143 transitions, 1101 flow [2023-11-06 22:42:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:42:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:42:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1071 transitions. [2023-11-06 22:42:20,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3667808219178082 [2023-11-06 22:42:20,620 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1071 transitions. [2023-11-06 22:42:20,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1071 transitions. [2023-11-06 22:42:20,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:20,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1071 transitions. [2023-11-06 22:42:20,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.875) internal successors, (1071), 8 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:20,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 365.0) internal successors, (3285), 9 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:20,631 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 365.0) internal successors, (3285), 9 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:20,631 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 514 flow. Second operand 8 states and 1071 transitions. [2023-11-06 22:42:20,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 143 transitions, 1101 flow [2023-11-06 22:42:20,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 143 transitions, 1084 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-06 22:42:20,686 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 780 flow [2023-11-06 22:42:20,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=780, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2023-11-06 22:42:20,687 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2023-11-06 22:42:20,687 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 780 flow [2023-11-06 22:42:20,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 122.3125) internal successors, (1957), 16 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:20,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:20,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:20,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:20,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:20,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:42:20,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2024380928, now seen corresponding path program 1 times [2023-11-06 22:42:20,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:20,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427693389] [2023-11-06 22:42:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:20,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:20,943 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 22:42:20,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427693389] [2023-11-06 22:42:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427693389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:42:20,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978686989] [2023-11-06 22:42:20,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:20,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:42:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:42:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:20,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 365 [2023-11-06 22:42:20,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 780 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:20,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:20,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 365 [2023-11-06 22:42:20,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:27,062 INFO L124 PetriNetUnfolderBase]: 29494/40378 cut-off events. [2023-11-06 22:42:27,062 INFO L125 PetriNetUnfolderBase]: For 117646/118828 co-relation queries the response was YES. [2023-11-06 22:42:27,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119688 conditions, 40378 events. 29494/40378 cut-off events. For 117646/118828 co-relation queries the response was YES. Maximal size of possible extension queue 4241. Compared 283588 event pairs, 11615 based on Foata normal form. 1167/18913 useless extension candidates. Maximal degree in co-relation 88640. Up to 25777 conditions per place. [2023-11-06 22:42:27,393 INFO L140 encePairwiseOnDemand]: 360/365 looper letters, 130 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2023-11-06 22:42:27,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 141 transitions, 1475 flow [2023-11-06 22:42:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:42:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-11-06 22:42:27,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785388127853881 [2023-11-06 22:42:27,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-11-06 22:42:27,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-11-06 22:42:27,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:27,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-11-06 22:42:27,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:27,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:27,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:27,404 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 780 flow. Second operand 3 states and 524 transitions. [2023-11-06 22:42:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 141 transitions, 1475 flow [2023-11-06 22:42:27,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 141 transitions, 1415 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:27,542 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 765 flow [2023-11-06 22:42:27,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=765, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2023-11-06 22:42:27,543 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2023-11-06 22:42:27,543 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 765 flow [2023-11-06 22:42:27,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:27,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:27,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:27,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:42:27,544 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:42:27,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2082772630, now seen corresponding path program 1 times [2023-11-06 22:42:27,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:27,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46857153] [2023-11-06 22:42:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:27,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:27,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:27,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46857153] [2023-11-06 22:42:27,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46857153] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:27,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332309948] [2023-11-06 22:42:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:27,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:27,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:27,873 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:27,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:42:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:28,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-06 22:42:28,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:28,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:28,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:42:28,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:42:28,201 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:42:28,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:42:28,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-06 22:42:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:28,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:28,301 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_275 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_275) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2023-11-06 22:42:28,317 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_274 (Array Int Int)) (v_ArrVal_275 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_274) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_275) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-11-06 22:42:28,336 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:28,336 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-06 22:42:28,349 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:42:28,351 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-11-06 22:42:28,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-06 22:42:28,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-06 22:42:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-06 22:42:28,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332309948] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:28,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:28,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-06 22:42:28,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512071962] [2023-11-06 22:42:28,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:28,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:42:28,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:42:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2023-11-06 22:42:28,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 365 [2023-11-06 22:42:28,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 765 flow. Second operand has 15 states, 15 states have (on average 122.26666666666667) internal successors, (1834), 15 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:28,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:28,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 365 [2023-11-06 22:42:28,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:34,746 INFO L124 PetriNetUnfolderBase]: 28235/38133 cut-off events. [2023-11-06 22:42:34,746 INFO L125 PetriNetUnfolderBase]: For 112663/113371 co-relation queries the response was YES. [2023-11-06 22:42:34,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121153 conditions, 38133 events. 28235/38133 cut-off events. For 112663/113371 co-relation queries the response was YES. Maximal size of possible extension queue 4063. Compared 259063 event pairs, 11037 based on Foata normal form. 736/18857 useless extension candidates. Maximal degree in co-relation 93495. Up to 27923 conditions per place. [2023-11-06 22:42:35,025 INFO L140 encePairwiseOnDemand]: 353/365 looper letters, 112 selfloop transitions, 39 changer transitions 0/153 dead transitions. [2023-11-06 22:42:35,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 153 transitions, 1295 flow [2023-11-06 22:42:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:42:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:42:35,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1070 transitions. [2023-11-06 22:42:35,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664383561643836 [2023-11-06 22:42:35,031 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1070 transitions. [2023-11-06 22:42:35,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1070 transitions. [2023-11-06 22:42:35,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:35,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1070 transitions. [2023-11-06 22:42:35,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.75) internal successors, (1070), 8 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 365.0) internal successors, (3285), 9 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,041 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 365.0) internal successors, (3285), 9 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,041 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 765 flow. Second operand 8 states and 1070 transitions. [2023-11-06 22:42:35,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 153 transitions, 1295 flow [2023-11-06 22:42:35,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 153 transitions, 1278 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:42:35,212 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 843 flow [2023-11-06 22:42:35,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=843, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2023-11-06 22:42:35,213 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2023-11-06 22:42:35,213 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 843 flow [2023-11-06 22:42:35,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 122.26666666666667) internal successors, (1834), 15 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:35,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:35,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:42:35,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f1e3c3-f2a5-4ed4-834f-89cf6784dc79/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:35,416 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-06 22:42:35,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2024381034, now seen corresponding path program 1 times [2023-11-06 22:42:35,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:35,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770659908] [2023-11-06 22:42:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:35,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:35,526 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 22:42:35,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770659908] [2023-11-06 22:42:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770659908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:35,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:35,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:42:35,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690132512] [2023-11-06 22:42:35,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:35,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:42:35,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:35,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:42:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:35,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 365 [2023-11-06 22:42:35,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 843 flow. Second operand has 5 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:35,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 365 [2023-11-06 22:42:35,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand