./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.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_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/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_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/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_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:44:35,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:44:35,493 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:44:35,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:44:35,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:44:35,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:44:35,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:44:35,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:44:35,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:44:35,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:44:35,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:44:35,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:44:35,525 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:44:35,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:44:35,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:44:35,527 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:44:35,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:44:35,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:44:35,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:44:35,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:44:35,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:44:35,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:44:35,531 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:44:35,532 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:44:35,532 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:44:35,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:44:35,533 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:44:35,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:44:35,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:44:35,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:44:35,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:35,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:44:35,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:44:35,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:44:35,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:44:35,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:44:35,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:44:35,539 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:44:35,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:44:35,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:44:35,540 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:44:35,540 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_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2023-11-06 22:44:35,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:44:35,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:44:35,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:44:35,859 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:44:35,860 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:44:35,861 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-06 22:44:38,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:39,216 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:39,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-06 22:44:39,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/data/06ec69a69/e6381bd9ed034ba080d405bec9490816/FLAGe007f0cfb [2023-11-06 22:44:39,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/data/06ec69a69/e6381bd9ed034ba080d405bec9490816 [2023-11-06 22:44:39,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:39,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:39,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:39,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:39,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:39,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3c327e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39, skipping insertion in model container [2023-11-06 22:44:39,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:39,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:39,516 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:39,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:39,588 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:39,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39 WrapperNode [2023-11-06 22:44:39,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:39,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:39,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:39,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:39,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,654 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 191 [2023-11-06 22:44:39,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:39,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:39,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:39,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:39,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:39,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:39,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:39,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:39,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (1/1) ... [2023-11-06 22:44:39,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:39,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:39,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:39,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:44:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:44:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:44:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:44:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:44:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:44:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:44:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:44:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:44:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:44:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:44:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:44:39,799 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 22:44:39,915 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:39,917 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:40,580 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:40,594 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:40,600 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:44:40,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:40 BoogieIcfgContainer [2023-11-06 22:44:40,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:40,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:40,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:40,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:40,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:39" (1/3) ... [2023-11-06 22:44:40,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ca9de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:40, skipping insertion in model container [2023-11-06 22:44:40,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:39" (2/3) ... [2023-11-06 22:44:40,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ca9de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:40, skipping insertion in model container [2023-11-06 22:44:40,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:40" (3/3) ... [2023-11-06 22:44:40,613 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-06 22:44:40,635 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:44:40,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:40,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-06 22:44:40,647 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:44:40,815 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:44:40,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 351 transitions, 723 flow [2023-11-06 22:44:41,038 INFO L124 PetriNetUnfolderBase]: 28/348 cut-off events. [2023-11-06 22:44:41,038 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:44:41,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 348 events. 28/348 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 551 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 279. Up to 3 conditions per place. [2023-11-06 22:44:41,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 351 transitions, 723 flow [2023-11-06 22:44:41,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 324 transitions, 663 flow [2023-11-06 22:44:41,061 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:44:41,072 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 324 transitions, 663 flow [2023-11-06 22:44:41,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 324 transitions, 663 flow [2023-11-06 22:44:41,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 324 transitions, 663 flow [2023-11-06 22:44:41,209 INFO L124 PetriNetUnfolderBase]: 27/324 cut-off events. [2023-11-06 22:44:41,209 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:44:41,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 324 events. 27/324 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 549 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 279. Up to 3 conditions per place. [2023-11-06 22:44:41,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 11934 [2023-11-06 22:44:54,818 INFO L134 LiptonReduction]: Checked pairs total: 16939 [2023-11-06 22:44:54,819 INFO L136 LiptonReduction]: Total number of compositions: 352 [2023-11-06 22:44:54,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:54,844 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;@57236c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:54,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-06 22:44:54,848 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:44:54,848 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:44:54,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:44:54,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:54,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:44:54,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:44:54,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 42259, now seen corresponding path program 1 times [2023-11-06 22:44:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546404648] [2023-11-06 22:44:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:54,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,178 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 22:44:55,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:55,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546404648] [2023-11-06 22:44:55,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546404648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:55,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:55,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:44:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994772092] [2023-11-06 22:44:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:55,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:55,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:55,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:55,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 703 [2023-11-06 22:44:55,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:55,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:55,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 703 [2023-11-06 22:44:55,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:56,457 INFO L124 PetriNetUnfolderBase]: 6072/8211 cut-off events. [2023-11-06 22:44:56,458 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-06 22:44:56,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16777 conditions, 8211 events. 6072/8211 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 37797 event pairs, 4430 based on Foata normal form. 0/4027 useless extension candidates. Maximal degree in co-relation 15562. Up to 8207 conditions per place. [2023-11-06 22:44:56,531 INFO L140 encePairwiseOnDemand]: 690/703 looper letters, 56 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-11-06 22:44:56,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 267 flow [2023-11-06 22:44:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:44:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2023-11-06 22:44:56,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822190611664296 [2023-11-06 22:44:56,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2023-11-06 22:44:56,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2023-11-06 22:44:56,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:56,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2023-11-06 22:44:56,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:56,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:56,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:56,599 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1017 transitions. [2023-11-06 22:44:56,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 267 flow [2023-11-06 22:44:56,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 258 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:44:56,609 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 184 flow [2023-11-06 22:44:56,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2023-11-06 22:44:56,617 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-11-06 22:44:56,617 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 184 flow [2023-11-06 22:44:56,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:56,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:56,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:44:56,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:44:56,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:44:56,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1311338, now seen corresponding path program 1 times [2023-11-06 22:44:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:56,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217554457] [2023-11-06 22:44:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:56,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,815 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 22:44:56,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:56,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217554457] [2023-11-06 22:44:56,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217554457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:56,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799504678] [2023-11-06 22:44:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:56,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:56,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:56,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:56,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:44:56,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:56,982 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 22:44:56,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:57,005 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 22:44:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799504678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:57,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:57,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:44:57,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830246334] [2023-11-06 22:44:57,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:57,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:44:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:57,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:44:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:57,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 703 [2023-11-06 22:44:57,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:57,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:57,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 703 [2023-11-06 22:44:57,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:58,598 INFO L124 PetriNetUnfolderBase]: 6090/8238 cut-off events. [2023-11-06 22:44:58,598 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 22:44:58,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16793 conditions, 8238 events. 6090/8238 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 37871 event pairs, 4430 based on Foata normal form. 0/4046 useless extension candidates. Maximal degree in co-relation 16638. Up to 8207 conditions per place. [2023-11-06 22:44:58,668 INFO L140 encePairwiseOnDemand]: 690/703 looper letters, 53 selfloop transitions, 37 changer transitions 0/90 dead transitions. [2023-11-06 22:44:58,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 484 flow [2023-11-06 22:44:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:44:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:44:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2311 transitions. [2023-11-06 22:44:58,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696199959357854 [2023-11-06 22:44:58,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2311 transitions. [2023-11-06 22:44:58,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2311 transitions. [2023-11-06 22:44:58,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:58,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2311 transitions. [2023-11-06 22:44:58,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 330.14285714285717) internal successors, (2311), 7 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 703.0) internal successors, (5624), 8 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,715 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 703.0) internal successors, (5624), 8 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,715 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 184 flow. Second operand 7 states and 2311 transitions. [2023-11-06 22:44:58,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 484 flow [2023-11-06 22:44:58,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:58,721 INFO L231 Difference]: Finished difference. Result has 62 places, 90 transitions, 414 flow [2023-11-06 22:44:58,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=62, PETRI_TRANSITIONS=90} [2023-11-06 22:44:58,722 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-06 22:44:58,722 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 90 transitions, 414 flow [2023-11-06 22:44:58,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:58,725 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:44:58,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:44:58,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:58,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:44:58,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:58,935 INFO L85 PathProgramCache]: Analyzing trace with hash 40652755, now seen corresponding path program 1 times [2023-11-06 22:44:58,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:58,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438776756] [2023-11-06 22:44:58,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:58,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:44:59,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:59,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438776756] [2023-11-06 22:44:59,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438776756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:59,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:59,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:59,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105058654] [2023-11-06 22:44:59,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:59,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:59,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:59,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:59,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:59,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 703 [2023-11-06 22:44:59,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 90 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:59,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:59,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 703 [2023-11-06 22:44:59,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:00,279 INFO L124 PetriNetUnfolderBase]: 6081/8226 cut-off events. [2023-11-06 22:45:00,280 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-06 22:45:00,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16803 conditions, 8226 events. 6081/8226 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 37812 event pairs, 4430 based on Foata normal form. 0/4048 useless extension candidates. Maximal degree in co-relation 16709. Up to 8198 conditions per place. [2023-11-06 22:45:00,347 INFO L140 encePairwiseOnDemand]: 698/703 looper letters, 72 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-06 22:45:00,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 489 flow [2023-11-06 22:45:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:45:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:45:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1005 transitions. [2023-11-06 22:45:00,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47652916073968704 [2023-11-06 22:45:00,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1005 transitions. [2023-11-06 22:45:00,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1005 transitions. [2023-11-06 22:45:00,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:00,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1005 transitions. [2023-11-06 22:45:00,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,366 INFO L175 Difference]: Start difference. First operand has 62 places, 90 transitions, 414 flow. Second operand 3 states and 1005 transitions. [2023-11-06 22:45:00,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 489 flow [2023-11-06 22:45:00,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 452 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:45:00,372 INFO L231 Difference]: Finished difference. Result has 59 places, 78 transitions, 308 flow [2023-11-06 22:45:00,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=59, PETRI_TRANSITIONS=78} [2023-11-06 22:45:00,373 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-06 22:45:00,373 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 78 transitions, 308 flow [2023-11-06 22:45:00,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:00,375 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:45:00,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:45:00,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:00,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 412633748, now seen corresponding path program 2 times [2023-11-06 22:45:00,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:00,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762698976] [2023-11-06 22:45:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:00,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,548 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 22:45:00,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:00,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762698976] [2023-11-06 22:45:00,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762698976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:00,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173100412] [2023-11-06 22:45:00,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:45:00,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:00,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:00,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:00,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:45:00,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:45:00,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:45:00,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:45:00,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:00,667 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 22:45:00,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:00,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173100412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:00,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:00,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:45:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464646296] [2023-11-06 22:45:00,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:00,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:45:00,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:00,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:45:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:45:00,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 703 [2023-11-06 22:45:00,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:00,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 703 [2023-11-06 22:45:00,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:01,743 INFO L124 PetriNetUnfolderBase]: 6081/8225 cut-off events. [2023-11-06 22:45:01,743 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-06 22:45:01,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16783 conditions, 8225 events. 6081/8225 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 37861 event pairs, 4430 based on Foata normal form. 1/4052 useless extension candidates. Maximal degree in co-relation 16703. Up to 8220 conditions per place. [2023-11-06 22:45:01,894 INFO L140 encePairwiseOnDemand]: 700/703 looper letters, 71 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-06 22:45:01,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 452 flow [2023-11-06 22:45:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:45:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:45:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1020 transitions. [2023-11-06 22:45:01,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48364153627311524 [2023-11-06 22:45:01,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1020 transitions. [2023-11-06 22:45:01,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1020 transitions. [2023-11-06 22:45:01,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:01,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1020 transitions. [2023-11-06 22:45:01,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:01,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:01,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:01,916 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 308 flow. Second operand 3 states and 1020 transitions. [2023-11-06 22:45:01,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 452 flow [2023-11-06 22:45:01,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:45:01,921 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 298 flow [2023-11-06 22:45:01,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-11-06 22:45:01,923 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-06 22:45:01,923 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 298 flow [2023-11-06 22:45:01,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:01,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:01,925 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:45:01,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:02,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:02,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:02,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1020419539, now seen corresponding path program 1 times [2023-11-06 22:45:02,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:02,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927974964] [2023-11-06 22:45:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,298 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 22:45:02,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:02,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927974964] [2023-11-06 22:45:02,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927974964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309909236] [2023-11-06 22:45:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:02,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:02,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:45:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:45:02,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:02,561 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 22:45:02,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:02,630 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 22:45:02,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309909236] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:02,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:02,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:45:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115077980] [2023-11-06 22:45:02,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:02,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:45:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:02,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:45:02,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:45:02,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 703 [2023-11-06 22:45:02,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 298 flow. Second operand has 13 states, 13 states have (on average 317.15384615384613) internal successors, (4123), 13 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:02,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:02,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 703 [2023-11-06 22:45:02,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:04,207 INFO L124 PetriNetUnfolderBase]: 6099/8261 cut-off events. [2023-11-06 22:45:04,207 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-06 22:45:04,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16921 conditions, 8261 events. 6099/8261 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 38109 event pairs, 4430 based on Foata normal form. 12/4086 useless extension candidates. Maximal degree in co-relation 16818. Up to 8212 conditions per place. [2023-11-06 22:45:04,283 INFO L140 encePairwiseOnDemand]: 694/703 looper letters, 52 selfloop transitions, 61 changer transitions 0/113 dead transitions. [2023-11-06 22:45:04,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 740 flow [2023-11-06 22:45:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:45:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:45:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3917 transitions. [2023-11-06 22:45:04,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643195827406354 [2023-11-06 22:45:04,301 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3917 transitions. [2023-11-06 22:45:04,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3917 transitions. [2023-11-06 22:45:04,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:04,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3917 transitions. [2023-11-06 22:45:04,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 326.4166666666667) internal successors, (3917), 12 states have internal predecessors, (3917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:04,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 703.0) internal successors, (9139), 13 states have internal predecessors, (9139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:04,343 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 703.0) internal successors, (9139), 13 states have internal predecessors, (9139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:04,344 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 298 flow. Second operand 12 states and 3917 transitions. [2023-11-06 22:45:04,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 740 flow [2023-11-06 22:45:04,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 716 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:45:04,352 INFO L231 Difference]: Finished difference. Result has 73 places, 113 transitions, 698 flow [2023-11-06 22:45:04,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=698, PETRI_PLACES=73, PETRI_TRANSITIONS=113} [2023-11-06 22:45:04,357 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-11-06 22:45:04,357 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 113 transitions, 698 flow [2023-11-06 22:45:04,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 317.15384615384613) internal successors, (4123), 13 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:04,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:04,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:04,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:04,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:04,566 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:04,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:04,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2095479833, now seen corresponding path program 1 times [2023-11-06 22:45:04,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:04,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992806302] [2023-11-06 22:45:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:04,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:04,778 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 22:45:04,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992806302] [2023-11-06 22:45:04,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992806302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:04,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:04,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:45:04,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329519805] [2023-11-06 22:45:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:04,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:45:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:45:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:45:04,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 703 [2023-11-06 22:45:04,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 113 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:04,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:04,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 703 [2023-11-06 22:45:04,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:06,348 INFO L124 PetriNetUnfolderBase]: 8395/11269 cut-off events. [2023-11-06 22:45:06,348 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-06 22:45:06,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23136 conditions, 11269 events. 8395/11269 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 54271 event pairs, 4430 based on Foata normal form. 0/5759 useless extension candidates. Maximal degree in co-relation 23018. Up to 8618 conditions per place. [2023-11-06 22:45:06,450 INFO L140 encePairwiseOnDemand]: 697/703 looper letters, 141 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2023-11-06 22:45:06,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 145 transitions, 1055 flow [2023-11-06 22:45:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:45:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:45:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1071 transitions. [2023-11-06 22:45:06,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078236130867709 [2023-11-06 22:45:06,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1071 transitions. [2023-11-06 22:45:06,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1071 transitions. [2023-11-06 22:45:06,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:06,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1071 transitions. [2023-11-06 22:45:06,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.0) internal successors, (1071), 3 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 22:45:06,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:06,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:06,466 INFO L175 Difference]: Start difference. First operand has 73 places, 113 transitions, 698 flow. Second operand 3 states and 1071 transitions. [2023-11-06 22:45:06,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 145 transitions, 1055 flow [2023-11-06 22:45:06,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 145 transitions, 877 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-06 22:45:06,642 INFO L231 Difference]: Finished difference. Result has 71 places, 116 transitions, 548 flow [2023-11-06 22:45:06,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=71, PETRI_TRANSITIONS=116} [2023-11-06 22:45:06,644 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2023-11-06 22:45:06,644 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 116 transitions, 548 flow [2023-11-06 22:45:06,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:06,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:06,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:06,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:45:06,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:06,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2095480294, now seen corresponding path program 1 times [2023-11-06 22:45:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:06,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543391500] [2023-11-06 22:45:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:06,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,785 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 22:45:06,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:06,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543391500] [2023-11-06 22:45:06,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543391500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:06,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:06,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:45:06,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268836247] [2023-11-06 22:45:06,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:06,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:45:06,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:06,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:45:06,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:07,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 703 [2023-11-06 22:45:07,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 116 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 307.6) internal successors, (1538), 5 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:07,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:07,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 703 [2023-11-06 22:45:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:08,629 INFO L124 PetriNetUnfolderBase]: 7910/10606 cut-off events. [2023-11-06 22:45:08,629 INFO L125 PetriNetUnfolderBase]: For 1689/1689 co-relation queries the response was YES. [2023-11-06 22:45:08,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23835 conditions, 10606 events. 7910/10606 cut-off events. For 1689/1689 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 48641 event pairs, 5609 based on Foata normal form. 0/6410 useless extension candidates. Maximal degree in co-relation 23738. Up to 10583 conditions per place. [2023-11-06 22:45:08,727 INFO L140 encePairwiseOnDemand]: 695/703 looper letters, 90 selfloop transitions, 25 changer transitions 0/115 dead transitions. [2023-11-06 22:45:08,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 115 transitions, 776 flow [2023-11-06 22:45:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:45:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:45:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1283 transitions. [2023-11-06 22:45:08,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562588904694168 [2023-11-06 22:45:08,733 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1283 transitions. [2023-11-06 22:45:08,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1283 transitions. [2023-11-06 22:45:08,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:08,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1283 transitions. [2023-11-06 22:45:08,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 320.75) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:08,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 703.0) internal successors, (3515), 5 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:08,816 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 703.0) internal successors, (3515), 5 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:08,817 INFO L175 Difference]: Start difference. First operand has 71 places, 116 transitions, 548 flow. Second operand 4 states and 1283 transitions. [2023-11-06 22:45:08,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 115 transitions, 776 flow [2023-11-06 22:45:08,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 772 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:45:08,824 INFO L231 Difference]: Finished difference. Result has 72 places, 115 transitions, 592 flow [2023-11-06 22:45:08,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=72, PETRI_TRANSITIONS=115} [2023-11-06 22:45:08,825 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-06 22:45:08,825 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 115 transitions, 592 flow [2023-11-06 22:45:08,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 307.6) internal successors, (1538), 5 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:08,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:08,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:08,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:45:08,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:08,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:08,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2095480353, now seen corresponding path program 1 times [2023-11-06 22:45:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:08,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987685020] [2023-11-06 22:45:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:08,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:08,970 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 22:45:08,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987685020] [2023-11-06 22:45:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987685020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:08,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:08,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:45:08,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338387406] [2023-11-06 22:45:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:08,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:45:08,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:45:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:45:09,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 703 [2023-11-06 22:45:09,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 115 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:09,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:09,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 703 [2023-11-06 22:45:09,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:11,179 INFO L124 PetriNetUnfolderBase]: 15324/20528 cut-off events. [2023-11-06 22:45:11,179 INFO L125 PetriNetUnfolderBase]: For 2758/2758 co-relation queries the response was YES. [2023-11-06 22:45:11,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45197 conditions, 20528 events. 15324/20528 cut-off events. For 2758/2758 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 103163 event pairs, 10825 based on Foata normal form. 0/12562 useless extension candidates. Maximal degree in co-relation 45031. Up to 10605 conditions per place. [2023-11-06 22:45:11,367 INFO L140 encePairwiseOnDemand]: 696/703 looper letters, 202 selfloop transitions, 6 changer transitions 0/208 dead transitions. [2023-11-06 22:45:11,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 208 transitions, 1456 flow [2023-11-06 22:45:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:45:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:45:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1657 transitions. [2023-11-06 22:45:11,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714082503556188 [2023-11-06 22:45:11,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1657 transitions. [2023-11-06 22:45:11,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1657 transitions. [2023-11-06 22:45:11,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:11,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1657 transitions. [2023-11-06 22:45:11,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 331.4) internal successors, (1657), 5 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:11,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:11,502 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:11,502 INFO L175 Difference]: Start difference. First operand has 72 places, 115 transitions, 592 flow. Second operand 5 states and 1657 transitions. [2023-11-06 22:45:11,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 208 transitions, 1456 flow [2023-11-06 22:45:11,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 208 transitions, 1415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:45:11,512 INFO L231 Difference]: Finished difference. Result has 76 places, 118 transitions, 613 flow [2023-11-06 22:45:11,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=613, PETRI_PLACES=76, PETRI_TRANSITIONS=118} [2023-11-06 22:45:11,513 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-11-06 22:45:11,513 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 118 transitions, 613 flow [2023-11-06 22:45:11,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:11,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:11,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:11,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:45:11,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:11,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1268253431, now seen corresponding path program 1 times [2023-11-06 22:45:11,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:11,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988386791] [2023-11-06 22:45:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,632 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 22:45:11,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:11,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988386791] [2023-11-06 22:45:11,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988386791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:11,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483591014] [2023-11-06 22:45:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:11,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:11,634 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:11,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:45:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:45:11,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:11,793 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 22:45:11,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:11,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483591014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:11,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:11,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:45:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322499122] [2023-11-06 22:45:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:11,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:45:11,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:45:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:11,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 703 [2023-11-06 22:45:11,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 118 transitions, 613 flow. Second operand has 4 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:11,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:11,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 703 [2023-11-06 22:45:11,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:13,840 INFO L124 PetriNetUnfolderBase]: 13029/17435 cut-off events. [2023-11-06 22:45:13,841 INFO L125 PetriNetUnfolderBase]: For 2585/2585 co-relation queries the response was YES. [2023-11-06 22:45:13,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38577 conditions, 17435 events. 13029/17435 cut-off events. For 2585/2585 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 84833 event pairs, 9010 based on Foata normal form. 156/11147 useless extension candidates. Maximal degree in co-relation 38415. Up to 17423 conditions per place. [2023-11-06 22:45:13,973 INFO L140 encePairwiseOnDemand]: 699/703 looper letters, 104 selfloop transitions, 12 changer transitions 0/116 dead transitions. [2023-11-06 22:45:13,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 116 transitions, 839 flow [2023-11-06 22:45:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:45:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:45:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1356 transitions. [2023-11-06 22:45:13,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822190611664296 [2023-11-06 22:45:13,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1356 transitions. [2023-11-06 22:45:13,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1356 transitions. [2023-11-06 22:45:13,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:13,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1356 transitions. [2023-11-06 22:45:13,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:13,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 703.0) internal successors, (3515), 5 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:13,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 703.0) internal successors, (3515), 5 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:13,994 INFO L175 Difference]: Start difference. First operand has 76 places, 118 transitions, 613 flow. Second operand 4 states and 1356 transitions. [2023-11-06 22:45:13,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 116 transitions, 839 flow [2023-11-06 22:45:14,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 116 transitions, 830 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:45:14,004 INFO L231 Difference]: Finished difference. Result has 75 places, 116 transitions, 622 flow [2023-11-06 22:45:14,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=622, PETRI_PLACES=75, PETRI_TRANSITIONS=116} [2023-11-06 22:45:14,005 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-11-06 22:45:14,005 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 116 transitions, 622 flow [2023-11-06 22:45:14,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:14,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:14,006 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:14,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:14,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:45:14,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:14,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:14,213 INFO L85 PathProgramCache]: Analyzing trace with hash -583506799, now seen corresponding path program 1 times [2023-11-06 22:45:14,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:14,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632120189] [2023-11-06 22:45:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:14,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:14,348 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 22:45:14,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:14,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632120189] [2023-11-06 22:45:14,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632120189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:14,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:14,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:45:14,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007992548] [2023-11-06 22:45:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:14,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:45:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:14,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:45:14,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:14,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 703 [2023-11-06 22:45:14,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 116 transitions, 622 flow. Second operand has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:14,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:14,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 703 [2023-11-06 22:45:14,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:15,949 INFO L124 PetriNetUnfolderBase]: 8571/11573 cut-off events. [2023-11-06 22:45:15,949 INFO L125 PetriNetUnfolderBase]: For 1537/1537 co-relation queries the response was YES. [2023-11-06 22:45:15,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25562 conditions, 11573 events. 8571/11573 cut-off events. For 1537/1537 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 54337 event pairs, 5610 based on Foata normal form. 156/7469 useless extension candidates. Maximal degree in co-relation 25399. Up to 8727 conditions per place. [2023-11-06 22:45:16,030 INFO L140 encePairwiseOnDemand]: 693/703 looper letters, 200 selfloop transitions, 20 changer transitions 0/220 dead transitions. [2023-11-06 22:45:16,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 220 transitions, 1496 flow [2023-11-06 22:45:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:45:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:45:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1964 transitions. [2023-11-06 22:45:16,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656235182550972 [2023-11-06 22:45:16,039 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1964 transitions. [2023-11-06 22:45:16,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1964 transitions. [2023-11-06 22:45:16,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:16,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1964 transitions. [2023-11-06 22:45:16,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 327.3333333333333) internal successors, (1964), 6 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:16,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 703.0) internal successors, (4921), 7 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:16,055 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 703.0) internal successors, (4921), 7 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:16,056 INFO L175 Difference]: Start difference. First operand has 75 places, 116 transitions, 622 flow. Second operand 6 states and 1964 transitions. [2023-11-06 22:45:16,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 220 transitions, 1496 flow [2023-11-06 22:45:16,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 220 transitions, 1483 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:45:16,066 INFO L231 Difference]: Finished difference. Result has 81 places, 130 transitions, 808 flow [2023-11-06 22:45:16,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=808, PETRI_PLACES=81, PETRI_TRANSITIONS=130} [2023-11-06 22:45:16,068 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2023-11-06 22:45:16,068 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 130 transitions, 808 flow [2023-11-06 22:45:16,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:16,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:16,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:16,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:45:16,069 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:16,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash -531325019, now seen corresponding path program 1 times [2023-11-06 22:45:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:16,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45228773] [2023-11-06 22:45:16,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:16,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:16,164 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 22:45:16,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45228773] [2023-11-06 22:45:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45228773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:16,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:16,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:45:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090719590] [2023-11-06 22:45:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:16,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:45:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:16,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:45:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:16,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 703 [2023-11-06 22:45:16,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 130 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:16,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:16,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 703 [2023-11-06 22:45:16,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:18,860 INFO L124 PetriNetUnfolderBase]: 15907/21327 cut-off events. [2023-11-06 22:45:18,861 INFO L125 PetriNetUnfolderBase]: For 7100/7100 co-relation queries the response was YES. [2023-11-06 22:45:18,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49122 conditions, 21327 events. 15907/21327 cut-off events. For 7100/7100 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 105848 event pairs, 10780 based on Foata normal form. 0/13509 useless extension candidates. Maximal degree in co-relation 48950. Up to 10739 conditions per place. [2023-11-06 22:45:19,016 INFO L140 encePairwiseOnDemand]: 697/703 looper letters, 136 selfloop transitions, 39 changer transitions 0/175 dead transitions. [2023-11-06 22:45:19,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 175 transitions, 1290 flow [2023-11-06 22:45:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:45:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:45:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1628 transitions. [2023-11-06 22:45:19,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2023-11-06 22:45:19,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1628 transitions. [2023-11-06 22:45:19,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1628 transitions. [2023-11-06 22:45:19,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:19,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1628 transitions. [2023-11-06 22:45:19,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.6) internal successors, (1628), 5 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:19,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:19,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:19,039 INFO L175 Difference]: Start difference. First operand has 81 places, 130 transitions, 808 flow. Second operand 5 states and 1628 transitions. [2023-11-06 22:45:19,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 175 transitions, 1290 flow [2023-11-06 22:45:19,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 175 transitions, 1285 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:45:19,054 INFO L231 Difference]: Finished difference. Result has 85 places, 131 transitions, 927 flow [2023-11-06 22:45:19,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=927, PETRI_PLACES=85, PETRI_TRANSITIONS=131} [2023-11-06 22:45:19,055 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2023-11-06 22:45:19,055 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 131 transitions, 927 flow [2023-11-06 22:45:19,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:19,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:19,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:19,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:45:19,056 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:19,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1190998303, now seen corresponding path program 1 times [2023-11-06 22:45:19,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:19,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528504753] [2023-11-06 22:45:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:19,169 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 22:45:19,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528504753] [2023-11-06 22:45:19,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528504753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124538465] [2023-11-06 22:45:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:19,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:19,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:19,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:19,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:45:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:19,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:45:19,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:19,358 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 22:45:19,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:19,412 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 22:45:19,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124538465] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:19,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:45:19,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 10 [2023-11-06 22:45:19,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810341877] [2023-11-06 22:45:19,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:19,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:45:19,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:19,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:45:19,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:45:19,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 703 [2023-11-06 22:45:19,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 131 transitions, 927 flow. Second operand has 5 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:19,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:19,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 703 [2023-11-06 22:45:19,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:21,739 INFO L124 PetriNetUnfolderBase]: 15645/21065 cut-off events. [2023-11-06 22:45:21,739 INFO L125 PetriNetUnfolderBase]: For 8425/8425 co-relation queries the response was YES. [2023-11-06 22:45:21,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49183 conditions, 21065 events. 15645/21065 cut-off events. For 8425/8425 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 105494 event pairs, 10780 based on Foata normal form. 262/14295 useless extension candidates. Maximal degree in co-relation 48999. Up to 10524 conditions per place. [2023-11-06 22:45:21,898 INFO L140 encePairwiseOnDemand]: 698/703 looper letters, 146 selfloop transitions, 28 changer transitions 0/174 dead transitions. [2023-11-06 22:45:21,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 174 transitions, 1399 flow [2023-11-06 22:45:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:45:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:45:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1592 transitions. [2023-11-06 22:45:21,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45291607396870553 [2023-11-06 22:45:21,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1592 transitions. [2023-11-06 22:45:21,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1592 transitions. [2023-11-06 22:45:21,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:21,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1592 transitions. [2023-11-06 22:45:21,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 318.4) internal successors, (1592), 5 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:21,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:21,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:21,920 INFO L175 Difference]: Start difference. First operand has 85 places, 131 transitions, 927 flow. Second operand 5 states and 1592 transitions. [2023-11-06 22:45:21,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 174 transitions, 1399 flow [2023-11-06 22:45:21,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 174 transitions, 1347 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:45:21,937 INFO L231 Difference]: Finished difference. Result has 87 places, 130 transitions, 925 flow [2023-11-06 22:45:21,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=925, PETRI_PLACES=87, PETRI_TRANSITIONS=130} [2023-11-06 22:45:21,938 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2023-11-06 22:45:21,938 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 130 transitions, 925 flow [2023-11-06 22:45:21,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:21,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:21,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:21,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:22,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:45:22,145 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:22,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:22,145 INFO L85 PathProgramCache]: Analyzing trace with hash -531324818, now seen corresponding path program 1 times [2023-11-06 22:45:22,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:22,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690267291] [2023-11-06 22:45:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:22,284 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 22:45:22,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690267291] [2023-11-06 22:45:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690267291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:22,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:22,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:45:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844319074] [2023-11-06 22:45:22,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:22,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:45:22,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:22,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:45:22,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:45:22,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 703 [2023-11-06 22:45:22,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 130 transitions, 925 flow. Second operand has 4 states, 4 states have (on average 312.5) internal successors, (1250), 4 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:22,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:22,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 703 [2023-11-06 22:45:22,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:27,247 INFO L124 PetriNetUnfolderBase]: 30076/40355 cut-off events. [2023-11-06 22:45:27,248 INFO L125 PetriNetUnfolderBase]: For 14888/14888 co-relation queries the response was YES. [2023-11-06 22:45:27,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93663 conditions, 40355 events. 30076/40355 cut-off events. For 14888/14888 co-relation queries the response was YES. Maximal size of possible extension queue 1506. Compared 220296 event pairs, 20440 based on Foata normal form. 262/26989 useless extension candidates. Maximal degree in co-relation 93413. Up to 20274 conditions per place. [2023-11-06 22:45:27,545 INFO L140 encePairwiseOnDemand]: 696/703 looper letters, 179 selfloop transitions, 19 changer transitions 0/198 dead transitions. [2023-11-06 22:45:27,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 198 transitions, 1615 flow [2023-11-06 22:45:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:45:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:45:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1648 transitions. [2023-11-06 22:45:27,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46884779516358466 [2023-11-06 22:45:27,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1648 transitions. [2023-11-06 22:45:27,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1648 transitions. [2023-11-06 22:45:27,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:27,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1648 transitions. [2023-11-06 22:45:27,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 329.6) internal successors, (1648), 5 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:27,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:27,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 703.0) internal successors, (4218), 6 states have internal predecessors, (4218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:27,571 INFO L175 Difference]: Start difference. First operand has 87 places, 130 transitions, 925 flow. Second operand 5 states and 1648 transitions. [2023-11-06 22:45:27,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 198 transitions, 1615 flow [2023-11-06 22:45:27,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 198 transitions, 1559 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:45:27,603 INFO L231 Difference]: Finished difference. Result has 91 places, 133 transitions, 971 flow [2023-11-06 22:45:27,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=971, PETRI_PLACES=91, PETRI_TRANSITIONS=133} [2023-11-06 22:45:27,604 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2023-11-06 22:45:27,604 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 133 transitions, 971 flow [2023-11-06 22:45:27,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.5) internal successors, (1250), 4 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:27,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:27,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:45:27,606 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:27,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash -531326385, now seen corresponding path program 1 times [2023-11-06 22:45:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:27,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681653624] [2023-11-06 22:45:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:27,671 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 22:45:27,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681653624] [2023-11-06 22:45:27,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681653624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:27,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:27,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:45:27,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766707884] [2023-11-06 22:45:27,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:27,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:45:27,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:27,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:45:27,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:45:27,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 703 [2023-11-06 22:45:27,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 133 transitions, 971 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:27,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:27,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 703 [2023-11-06 22:45:27,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:34,335 INFO L124 PetriNetUnfolderBase]: 43692/58163 cut-off events. [2023-11-06 22:45:34,335 INFO L125 PetriNetUnfolderBase]: For 22801/22801 co-relation queries the response was YES. [2023-11-06 22:45:34,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135138 conditions, 58163 events. 43692/58163 cut-off events. For 22801/22801 co-relation queries the response was YES. Maximal size of possible extension queue 1908. Compared 327933 event pairs, 20440 based on Foata normal form. 0/38951 useless extension candidates. Maximal degree in co-relation 134886. Up to 42452 conditions per place. [2023-11-06 22:45:34,749 INFO L140 encePairwiseOnDemand]: 697/703 looper letters, 163 selfloop transitions, 4 changer transitions 0/167 dead transitions. [2023-11-06 22:45:34,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 167 transitions, 1412 flow [2023-11-06 22:45:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:45:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:45:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1065 transitions. [2023-11-06 22:45:34,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049786628733998 [2023-11-06 22:45:34,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1065 transitions. [2023-11-06 22:45:34,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1065 transitions. [2023-11-06 22:45:34,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:34,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1065 transitions. [2023-11-06 22:45:34,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.0) internal successors, (1065), 3 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 22:45:34,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:34,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 703.0) internal successors, (2812), 4 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:34,764 INFO L175 Difference]: Start difference. First operand has 91 places, 133 transitions, 971 flow. Second operand 3 states and 1065 transitions. [2023-11-06 22:45:34,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 167 transitions, 1412 flow [2023-11-06 22:45:34,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 167 transitions, 1364 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:45:34,804 INFO L231 Difference]: Finished difference. Result has 93 places, 136 transitions, 951 flow [2023-11-06 22:45:34,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=951, PETRI_PLACES=93, PETRI_TRANSITIONS=136} [2023-11-06 22:45:34,806 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2023-11-06 22:45:34,806 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 136 transitions, 951 flow [2023-11-06 22:45:34,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:34,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:34,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:34,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:45:34,807 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:34,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash -979629081, now seen corresponding path program 1 times [2023-11-06 22:45:34,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:34,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945917488] [2023-11-06 22:45:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:34,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:45:34,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:34,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945917488] [2023-11-06 22:45:34,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945917488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:34,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:34,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:45:34,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762387459] [2023-11-06 22:45:34,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:34,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:45:34,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:45:34,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:35,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 703 [2023-11-06 22:45:35,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 136 transitions, 951 flow. Second operand has 5 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:35,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:35,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 703 [2023-11-06 22:45:35,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:40,107 INFO L124 PetriNetUnfolderBase]: 32830/44125 cut-off events. [2023-11-06 22:45:40,107 INFO L125 PetriNetUnfolderBase]: For 21704/21704 co-relation queries the response was YES. [2023-11-06 22:45:40,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112687 conditions, 44125 events. 32830/44125 cut-off events. For 21704/21704 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 243829 event pairs, 20720 based on Foata normal form. 382/34015 useless extension candidates. Maximal degree in co-relation 112439. Up to 29955 conditions per place. [2023-11-06 22:45:40,703 INFO L140 encePairwiseOnDemand]: 695/703 looper letters, 199 selfloop transitions, 22 changer transitions 0/221 dead transitions. [2023-11-06 22:45:40,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 221 transitions, 1730 flow [2023-11-06 22:45:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:45:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:45:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1957 transitions. [2023-11-06 22:45:40,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2023-11-06 22:45:40,712 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1957 transitions. [2023-11-06 22:45:40,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1957 transitions. [2023-11-06 22:45:40,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:40,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1957 transitions. [2023-11-06 22:45:40,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.1666666666667) internal successors, (1957), 6 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 22:45:40,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 703.0) internal successors, (4921), 7 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:40,731 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 703.0) internal successors, (4921), 7 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:40,731 INFO L175 Difference]: Start difference. First operand has 93 places, 136 transitions, 951 flow. Second operand 6 states and 1957 transitions. [2023-11-06 22:45:40,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 221 transitions, 1730 flow [2023-11-06 22:45:40,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 221 transitions, 1718 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:45:40,798 INFO L231 Difference]: Finished difference. Result has 99 places, 140 transitions, 1041 flow [2023-11-06 22:45:40,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=703, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1041, PETRI_PLACES=99, PETRI_TRANSITIONS=140} [2023-11-06 22:45:40,799 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2023-11-06 22:45:40,799 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 140 transitions, 1041 flow [2023-11-06 22:45:40,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:40,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:45:40,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:45:40,801 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-06 22:45:40,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:40,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1397863085, now seen corresponding path program 1 times [2023-11-06 22:45:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:40,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678687206] [2023-11-06 22:45:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:40,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:40,955 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 22:45:40,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678687206] [2023-11-06 22:45:40,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678687206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:40,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614772972] [2023-11-06 22:45:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:40,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:40,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:40,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:40,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e59d2dc7-b9c1-4988-9d53-07893d3a37e8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:45:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:41,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:45:41,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:41,147 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 22:45:41,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:41,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614772972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:41,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:41,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-06 22:45:41,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069274576] [2023-11-06 22:45:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:45:41,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:45:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:41,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 703 [2023-11-06 22:45:41,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 140 transitions, 1041 flow. Second operand has 4 states, 4 states have (on average 328.75) internal successors, (1315), 4 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:41,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:41,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 703 [2023-11-06 22:45:41,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand