./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:27:58,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:27:58,422 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:27:58,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:27:58,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:27:58,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:27:58,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:27:58,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:27:58,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:27:58,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:27:58,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:27:58,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:27:58,465 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:27:58,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:27:58,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:27:58,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:27:58,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:27:58,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:27:58,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:27:58,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:27:58,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:27:58,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:27:58,473 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:27:58,474 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:27:58,475 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:27:58,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:27:58,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:27:58,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:27:58,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:27:58,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:27:58,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:58,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:27:58,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:27:58,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:27:58,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:27:58,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:27:58,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:27:58,483 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:27:58,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:27:58,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:27:58,485 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:27:58,485 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_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2023-11-12 02:27:58,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:27:58,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:27:58,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:27:58,860 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:27:58,860 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:27:58,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/stack_longer-1.i [2023-11-12 02:28:02,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:02,546 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:02,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/sv-benchmarks/c/pthread/stack_longer-1.i [2023-11-12 02:28:02,575 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/data/7068b94cf/1cf996575df44e4fa27de55b6bcf72b6/FLAGf4d4de79d [2023-11-12 02:28:02,598 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/data/7068b94cf/1cf996575df44e4fa27de55b6bcf72b6 [2023-11-12 02:28:02,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:02,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:02,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:02,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:02,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:02,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:02" (1/1) ... [2023-11-12 02:28:02,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5fcbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:02, skipping insertion in model container [2023-11-12 02:28:02,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:02" (1/1) ... [2023-11-12 02:28:02,700 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:03,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:03,355 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:03,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:03,576 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:03,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03 WrapperNode [2023-11-12 02:28:03,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:03,579 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:03,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:03,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:03,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,702 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 169 [2023-11-12 02:28:03,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:03,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:03,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:03,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:03,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:03,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:03,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:03,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:03,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (1/1) ... [2023-11-12 02:28:03,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:03,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:03,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:03,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:28:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:28:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:28:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:28:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:28:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:28:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:28:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:28:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:28:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:03,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:03,910 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:28:04,103 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:04,106 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:04,465 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:04,476 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:04,477 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:28:04,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:04 BoogieIcfgContainer [2023-11-12 02:28:04,480 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:04,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:28:04,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:28:04,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:28:04,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:28:02" (1/3) ... [2023-11-12 02:28:04,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0c8383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:04, skipping insertion in model container [2023-11-12 02:28:04,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:03" (2/3) ... [2023-11-12 02:28:04,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0c8383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:04, skipping insertion in model container [2023-11-12 02:28:04,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:04" (3/3) ... [2023-11-12 02:28:04,490 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2023-11-12 02:28:04,500 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:28:04,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:28:04,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-12 02:28:04,511 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:28:04,627 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:28:04,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 190 transitions, 394 flow [2023-11-12 02:28:04,809 INFO L124 PetriNetUnfolderBase]: 12/188 cut-off events. [2023-11-12 02:28:04,810 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:28:04,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 12/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 553 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 150. Up to 3 conditions per place. [2023-11-12 02:28:04,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 190 transitions, 394 flow [2023-11-12 02:28:04,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 178 transitions, 365 flow [2023-11-12 02:28:04,836 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:28:04,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 178 transitions, 365 flow [2023-11-12 02:28:04,853 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 178 transitions, 365 flow [2023-11-12 02:28:04,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 178 transitions, 365 flow [2023-11-12 02:28:04,914 INFO L124 PetriNetUnfolderBase]: 12/178 cut-off events. [2023-11-12 02:28:04,914 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:28:04,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 178 events. 12/178 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 454 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 150. Up to 3 conditions per place. [2023-11-12 02:28:04,925 INFO L119 LiptonReduction]: Number of co-enabled transitions 11748 [2023-11-12 02:28:10,350 INFO L134 LiptonReduction]: Checked pairs total: 15753 [2023-11-12 02:28:10,351 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-11-12 02:28:10,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:28:10,376 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=LoopHeads, 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;@52198929, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:28:10,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 02:28:10,383 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:28:10,383 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-12 02:28:10,383 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:28:10,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:10,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:10,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:10,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash -654296763, now seen corresponding path program 1 times [2023-11-12 02:28:10,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:10,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458244419] [2023-11-12 02:28:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:10,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:10,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458244419] [2023-11-12 02:28:10,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458244419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:10,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:10,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:10,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517491315] [2023-11-12 02:28:10,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:10,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:10,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:10,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-12 02:28:10,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:10,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:10,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-12 02:28:10,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:11,434 INFO L124 PetriNetUnfolderBase]: 1327/2162 cut-off events. [2023-11-12 02:28:11,434 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-12 02:28:11,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 2162 events. 1327/2162 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9926 event pairs, 382 based on Foata normal form. 0/1535 useless extension candidates. Maximal degree in co-relation 4072. Up to 1328 conditions per place. [2023-11-12 02:28:11,463 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 63 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-12 02:28:11,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 69 transitions, 287 flow [2023-11-12 02:28:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-11-12 02:28:11,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382513661202186 [2023-11-12 02:28:11,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-11-12 02:28:11,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-11-12 02:28:11,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:11,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-11-12 02:28:11,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:11,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:11,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:11,530 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 591 transitions. [2023-11-12 02:28:11,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 69 transitions, 287 flow [2023-11-12 02:28:11,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 279 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:28:11,543 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-11-12 02:28:11,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-11-12 02:28:11,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-11-12 02:28:11,552 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-11-12 02:28:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:11,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:11,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:11,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:28:11,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:11,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash 777936947, now seen corresponding path program 1 times [2023-11-12 02:28:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:11,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715996782] [2023-11-12 02:28:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:11,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715996782] [2023-11-12 02:28:11,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715996782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:11,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:11,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:11,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916307743] [2023-11-12 02:28:11,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:11,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:11,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-12 02:28:11,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:11,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:11,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-12 02:28:11,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:12,259 INFO L124 PetriNetUnfolderBase]: 1959/3328 cut-off events. [2023-11-12 02:28:12,260 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2023-11-12 02:28:12,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7227 conditions, 3328 events. 1959/3328 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 18189 event pairs, 916 based on Foata normal form. 0/2784 useless extension candidates. Maximal degree in co-relation 5504. Up to 1986 conditions per place. [2023-11-12 02:28:12,289 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 72 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-12 02:28:12,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 76 transitions, 365 flow [2023-11-12 02:28:12,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-11-12 02:28:12,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373406193078324 [2023-11-12 02:28:12,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-11-12 02:28:12,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-11-12 02:28:12,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:12,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-11-12 02:28:12,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:12,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:12,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:12,301 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 590 transitions. [2023-11-12 02:28:12,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 76 transitions, 365 flow [2023-11-12 02:28:12,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 76 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:28:12,308 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-11-12 02:28:12,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-11-12 02:28:12,310 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-12 02:28:12,310 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-11-12 02:28:12,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:12,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:12,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:12,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:28:12,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:12,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1698453809, now seen corresponding path program 1 times [2023-11-12 02:28:12,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:12,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636127470] [2023-11-12 02:28:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:12,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:12,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636127470] [2023-11-12 02:28:12,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636127470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:12,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:12,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:12,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365683703] [2023-11-12 02:28:12,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:12,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:12,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-12 02:28:12,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:12,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:12,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-12 02:28:12,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:13,060 INFO L124 PetriNetUnfolderBase]: 3087/4996 cut-off events. [2023-11-12 02:28:13,060 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2023-11-12 02:28:13,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11705 conditions, 4996 events. 3087/4996 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 28817 event pairs, 1439 based on Foata normal form. 0/4298 useless extension candidates. Maximal degree in co-relation 9612. Up to 3053 conditions per place. [2023-11-12 02:28:13,099 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 74 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-12 02:28:13,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 388 flow [2023-11-12 02:28:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:13,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-11-12 02:28:13,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373406193078324 [2023-11-12 02:28:13,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-11-12 02:28:13,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-11-12 02:28:13,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:13,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-11-12 02:28:13,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,112 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 590 transitions. [2023-11-12 02:28:13,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 388 flow [2023-11-12 02:28:13,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 78 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:13,119 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-11-12 02:28:13,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-11-12 02:28:13,121 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-12 02:28:13,121 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-11-12 02:28:13,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:13,122 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:13,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:28:13,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:13,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash 600803712, now seen corresponding path program 1 times [2023-11-12 02:28:13,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:13,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078524344] [2023-11-12 02:28:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:13,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:13,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078524344] [2023-11-12 02:28:13,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078524344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:13,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:13,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:13,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435716382] [2023-11-12 02:28:13,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:13,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:13,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:13,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-12 02:28:13,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:13,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-12 02:28:13,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:13,824 INFO L124 PetriNetUnfolderBase]: 2777/4684 cut-off events. [2023-11-12 02:28:13,824 INFO L125 PetriNetUnfolderBase]: For 730/730 co-relation queries the response was YES. [2023-11-12 02:28:13,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10944 conditions, 4684 events. 2777/4684 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 27395 event pairs, 323 based on Foata normal form. 0/4262 useless extension candidates. Maximal degree in co-relation 9848. Up to 4262 conditions per place. [2023-11-12 02:28:13,861 INFO L140 encePairwiseOnDemand]: 364/366 looper letters, 61 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-12 02:28:13,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 329 flow [2023-11-12 02:28:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-11-12 02:28:13,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52367941712204 [2023-11-12 02:28:13,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-11-12 02:28:13,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-11-12 02:28:13,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:13,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-11-12 02:28:13,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,872 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 3 states and 575 transitions. [2023-11-12 02:28:13,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 329 flow [2023-11-12 02:28:13,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:13,877 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 140 flow [2023-11-12 02:28:13,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-12 02:28:13,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-12 02:28:13,879 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 140 flow [2023-11-12 02:28:13,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:13,880 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:13,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:28:13,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:13,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:13,881 INFO L85 PathProgramCache]: Analyzing trace with hash 600803833, now seen corresponding path program 1 times [2023-11-12 02:28:13,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:13,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88713067] [2023-11-12 02:28:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:13,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:28:13,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:13,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88713067] [2023-11-12 02:28:13,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88713067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:13,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:13,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558454363] [2023-11-12 02:28:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:13,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:13,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 366 [2023-11-12 02:28:13,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:13,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:13,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 366 [2023-11-12 02:28:13,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:14,514 INFO L124 PetriNetUnfolderBase]: 2618/4425 cut-off events. [2023-11-12 02:28:14,515 INFO L125 PetriNetUnfolderBase]: For 668/668 co-relation queries the response was YES. [2023-11-12 02:28:14,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10246 conditions, 4425 events. 2618/4425 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 25573 event pairs, 525 based on Foata normal form. 0/4125 useless extension candidates. Maximal degree in co-relation 9200. Up to 3407 conditions per place. [2023-11-12 02:28:14,544 INFO L140 encePairwiseOnDemand]: 362/366 looper letters, 58 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-11-12 02:28:14,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 325 flow [2023-11-12 02:28:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-11-12 02:28:14,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209471766848816 [2023-11-12 02:28:14,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-11-12 02:28:14,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-11-12 02:28:14,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:14,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-11-12 02:28:14,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:14,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:14,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:14,556 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 140 flow. Second operand 3 states and 572 transitions. [2023-11-12 02:28:14,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 325 flow [2023-11-12 02:28:14,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:14,559 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 151 flow [2023-11-12 02:28:14,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-11-12 02:28:14,560 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-12 02:28:14,560 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 151 flow [2023-11-12 02:28:14,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:14,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:14,561 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:14,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:28:14,562 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:14,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1319847135, now seen corresponding path program 1 times [2023-11-12 02:28:14,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:14,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173734200] [2023-11-12 02:28:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:14,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:14,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173734200] [2023-11-12 02:28:14,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173734200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274725398] [2023-11-12 02:28:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:14,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:14,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:14,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:14,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:28:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:14,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:28:14,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:14,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:28:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274725398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:28:14,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:28:14,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-12 02:28:14,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597791652] [2023-11-12 02:28:14,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:28:14,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:28:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:14,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:28:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:28:15,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 366 [2023-11-12 02:28:15,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 151 flow. Second operand has 10 states, 10 states have (on average 170.7) internal successors, (1707), 10 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:15,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:15,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 366 [2023-11-12 02:28:15,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:16,506 INFO L124 PetriNetUnfolderBase]: 4836/8005 cut-off events. [2023-11-12 02:28:16,506 INFO L125 PetriNetUnfolderBase]: For 3713/3713 co-relation queries the response was YES. [2023-11-12 02:28:16,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20050 conditions, 8005 events. 4836/8005 cut-off events. For 3713/3713 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 46643 event pairs, 954 based on Foata normal form. 102/7639 useless extension candidates. Maximal degree in co-relation 18754. Up to 2635 conditions per place. [2023-11-12 02:28:16,560 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 236 selfloop transitions, 42 changer transitions 0/280 dead transitions. [2023-11-12 02:28:16,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 280 transitions, 1536 flow [2023-11-12 02:28:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:28:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-12 02:28:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2937 transitions. [2023-11-12 02:28:16,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015368852459017 [2023-11-12 02:28:16,573 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2937 transitions. [2023-11-12 02:28:16,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2937 transitions. [2023-11-12 02:28:16,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:16,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2937 transitions. [2023-11-12 02:28:16,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 183.5625) internal successors, (2937), 16 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:16,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 366.0) internal successors, (6222), 17 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:16,601 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 366.0) internal successors, (6222), 17 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:16,601 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 151 flow. Second operand 16 states and 2937 transitions. [2023-11-12 02:28:16,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 280 transitions, 1536 flow [2023-11-12 02:28:16,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 280 transitions, 1493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:16,617 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-11-12 02:28:16,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=449, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-11-12 02:28:16,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-11-12 02:28:16,618 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-11-12 02:28:16,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 170.7) internal successors, (1707), 10 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:16,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:16,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:16,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:28:16,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:16,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash -499289299, now seen corresponding path program 1 times [2023-11-12 02:28:16,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:16,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356299042] [2023-11-12 02:28:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:16,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:16,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356299042] [2023-11-12 02:28:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356299042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:16,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:16,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212825907] [2023-11-12 02:28:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:16,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:16,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 366 [2023-11-12 02:28:16,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:16,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:16,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 366 [2023-11-12 02:28:16,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:17,475 INFO L124 PetriNetUnfolderBase]: 1615/2962 cut-off events. [2023-11-12 02:28:17,475 INFO L125 PetriNetUnfolderBase]: For 2707/2707 co-relation queries the response was YES. [2023-11-12 02:28:17,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8559 conditions, 2962 events. 1615/2962 cut-off events. For 2707/2707 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 16495 event pairs, 301 based on Foata normal form. 268/3158 useless extension candidates. Maximal degree in co-relation 7821. Up to 2200 conditions per place. [2023-11-12 02:28:17,496 INFO L140 encePairwiseOnDemand]: 359/366 looper letters, 58 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-11-12 02:28:17,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 461 flow [2023-11-12 02:28:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-11-12 02:28:17,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51183970856102 [2023-11-12 02:28:17,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-11-12 02:28:17,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-11-12 02:28:17,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:17,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-11-12 02:28:17,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:17,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:17,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:17,508 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 562 transitions. [2023-11-12 02:28:17,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 461 flow [2023-11-12 02:28:17,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 425 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-12 02:28:17,547 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-11-12 02:28:17,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-11-12 02:28:17,548 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-11-12 02:28:17,548 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-11-12 02:28:17,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:17,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:17,549 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:17,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:28:17,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:17,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2032552597, now seen corresponding path program 1 times [2023-11-12 02:28:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:17,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388553159] [2023-11-12 02:28:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:17,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:17,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388553159] [2023-11-12 02:28:17,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388553159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854375279] [2023-11-12 02:28:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:17,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:17,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:17,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:28:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:17,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:28:17,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:17,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:17,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854375279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:17,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:28:17,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-12 02:28:17,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482499711] [2023-11-12 02:28:17,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:17,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:28:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:28:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:28:17,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 366 [2023-11-12 02:28:17,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:17,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:17,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 366 [2023-11-12 02:28:17,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:18,600 INFO L124 PetriNetUnfolderBase]: 1646/3095 cut-off events. [2023-11-12 02:28:18,600 INFO L125 PetriNetUnfolderBase]: For 2181/2181 co-relation queries the response was YES. [2023-11-12 02:28:18,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8861 conditions, 3095 events. 1646/3095 cut-off events. For 2181/2181 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16702 event pairs, 339 based on Foata normal form. 126/3137 useless extension candidates. Maximal degree in co-relation 4527. Up to 1500 conditions per place. [2023-11-12 02:28:18,627 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 93 selfloop transitions, 18 changer transitions 0/113 dead transitions. [2023-11-12 02:28:18,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 113 transitions, 712 flow [2023-11-12 02:28:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:28:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:28:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1101 transitions. [2023-11-12 02:28:18,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013661202185792 [2023-11-12 02:28:18,634 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1101 transitions. [2023-11-12 02:28:18,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1101 transitions. [2023-11-12 02:28:18,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:18,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1101 transitions. [2023-11-12 02:28:18,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:18,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:18,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:18,650 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1101 transitions. [2023-11-12 02:28:18,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 113 transitions, 712 flow [2023-11-12 02:28:18,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 693 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:18,661 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-11-12 02:28:18,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-11-12 02:28:18,666 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-12 02:28:18,667 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-11-12 02:28:18,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:18,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:18,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:18,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:18,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:28:18,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:18,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:18,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1807957664, now seen corresponding path program 1 times [2023-11-12 02:28:18,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:18,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997047995] [2023-11-12 02:28:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:18,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:18,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:18,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997047995] [2023-11-12 02:28:18,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997047995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:18,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:18,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:28:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41890407] [2023-11-12 02:28:18,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:18,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:18,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 366 [2023-11-12 02:28:18,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:18,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:18,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 366 [2023-11-12 02:28:18,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:19,645 INFO L124 PetriNetUnfolderBase]: 1940/3635 cut-off events. [2023-11-12 02:28:19,645 INFO L125 PetriNetUnfolderBase]: For 3598/3598 co-relation queries the response was YES. [2023-11-12 02:28:19,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10776 conditions, 3635 events. 1940/3635 cut-off events. For 3598/3598 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 20072 event pairs, 413 based on Foata normal form. 18/3537 useless extension candidates. Maximal degree in co-relation 6873. Up to 2027 conditions per place. [2023-11-12 02:28:19,718 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 106 selfloop transitions, 6 changer transitions 3/117 dead transitions. [2023-11-12 02:28:19,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 833 flow [2023-11-12 02:28:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:28:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:28:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2023-11-12 02:28:19,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120218579234973 [2023-11-12 02:28:19,722 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2023-11-12 02:28:19,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2023-11-12 02:28:19,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:19,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2023-11-12 02:28:19,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:19,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 366.0) internal successors, (2196), 6 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:19,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 366.0) internal successors, (2196), 6 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:19,732 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 5 states and 937 transitions. [2023-11-12 02:28:19,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 833 flow [2023-11-12 02:28:19,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 817 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-12 02:28:19,745 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 367 flow [2023-11-12 02:28:19,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-12 02:28:19,746 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-11-12 02:28:19,747 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 367 flow [2023-11-12 02:28:19,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:19,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:19,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:28:19,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:28:19,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:19,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1326176938, now seen corresponding path program 1 times [2023-11-12 02:28:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85935179] [2023-11-12 02:28:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:19,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:19,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85935179] [2023-11-12 02:28:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85935179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:19,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:19,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:19,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469561206] [2023-11-12 02:28:19,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:19,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:19,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:19,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-12 02:28:19,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:19,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:19,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-12 02:28:19,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:20,230 INFO L124 PetriNetUnfolderBase]: 1743/3222 cut-off events. [2023-11-12 02:28:20,230 INFO L125 PetriNetUnfolderBase]: For 3729/3741 co-relation queries the response was YES. [2023-11-12 02:28:20,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9914 conditions, 3222 events. 1743/3222 cut-off events. For 3729/3741 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 17543 event pairs, 618 based on Foata normal form. 2/3156 useless extension candidates. Maximal degree in co-relation 9416. Up to 3047 conditions per place. [2023-11-12 02:28:20,251 INFO L140 encePairwiseOnDemand]: 364/366 looper letters, 68 selfloop transitions, 1 changer transitions 1/72 dead transitions. [2023-11-12 02:28:20,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 568 flow [2023-11-12 02:28:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-11-12 02:28:20,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154826958105647 [2023-11-12 02:28:20,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-11-12 02:28:20,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-11-12 02:28:20,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:20,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-11-12 02:28:20,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,260 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,260 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 367 flow. Second operand 3 states and 566 transitions. [2023-11-12 02:28:20,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 568 flow [2023-11-12 02:28:20,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 560 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:20,274 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 358 flow [2023-11-12 02:28:20,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2023-11-12 02:28:20,275 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-11-12 02:28:20,275 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 358 flow [2023-11-12 02:28:20,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:20,275 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:28:20,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:28:20,276 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:20,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1326176939, now seen corresponding path program 1 times [2023-11-12 02:28:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:20,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839413098] [2023-11-12 02:28:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:20,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:28:20,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:20,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839413098] [2023-11-12 02:28:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839413098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:20,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:20,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481974833] [2023-11-12 02:28:20,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:20,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:28:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:28:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:28:20,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 366 [2023-11-12 02:28:20,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:20,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 366 [2023-11-12 02:28:20,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:20,770 INFO L124 PetriNetUnfolderBase]: 1595/2910 cut-off events. [2023-11-12 02:28:20,770 INFO L125 PetriNetUnfolderBase]: For 3510/3522 co-relation queries the response was YES. [2023-11-12 02:28:20,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8948 conditions, 2910 events. 1595/2910 cut-off events. For 3510/3522 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 15163 event pairs, 634 based on Foata normal form. 2/2902 useless extension candidates. Maximal degree in co-relation 6045. Up to 1683 conditions per place. [2023-11-12 02:28:20,791 INFO L140 encePairwiseOnDemand]: 362/366 looper letters, 65 selfloop transitions, 4 changer transitions 1/72 dead transitions. [2023-11-12 02:28:20,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 560 flow [2023-11-12 02:28:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:28:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:28:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 563 transitions. [2023-11-12 02:28:20,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127504553734062 [2023-11-12 02:28:20,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 563 transitions. [2023-11-12 02:28:20,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 563 transitions. [2023-11-12 02:28:20,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:20,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 563 transitions. [2023-11-12 02:28:20,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,801 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 358 flow. Second operand 3 states and 563 transitions. [2023-11-12 02:28:20,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 560 flow [2023-11-12 02:28:20,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:20,815 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 369 flow [2023-11-12 02:28:20,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=71, PETRI_TRANSITIONS=58} [2023-11-12 02:28:20,816 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-11-12 02:28:20,816 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 369 flow [2023-11-12 02:28:20,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:20,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:20,817 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:28:20,817 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:20,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1359358909, now seen corresponding path program 1 times [2023-11-12 02:28:20,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:20,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659518387] [2023-11-12 02:28:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:20,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:20,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659518387] [2023-11-12 02:28:20,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659518387] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:20,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438293112] [2023-11-12 02:28:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:20,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:20,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:20,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:21,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:28:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:21,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:28:21,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:28:21,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:21,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438293112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:21,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:28:21,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-12 02:28:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168975122] [2023-11-12 02:28:21,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:21,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:28:21,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:21,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:28:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:28:21,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-12 02:28:21,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:21,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:21,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-12 02:28:21,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:21,940 INFO L124 PetriNetUnfolderBase]: 1956/3565 cut-off events. [2023-11-12 02:28:21,940 INFO L125 PetriNetUnfolderBase]: For 4615/4615 co-relation queries the response was YES. [2023-11-12 02:28:21,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11146 conditions, 3565 events. 1956/3565 cut-off events. For 4615/4615 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 18792 event pairs, 471 based on Foata normal form. 44/3609 useless extension candidates. Maximal degree in co-relation 10718. Up to 1657 conditions per place. [2023-11-12 02:28:21,971 INFO L140 encePairwiseOnDemand]: 355/366 looper letters, 106 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2023-11-12 02:28:21,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 129 transitions, 941 flow [2023-11-12 02:28:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:28:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:28:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1232 transitions. [2023-11-12 02:28:21,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808743169398907 [2023-11-12 02:28:21,976 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1232 transitions. [2023-11-12 02:28:21,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1232 transitions. [2023-11-12 02:28:21,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:21,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1232 transitions. [2023-11-12 02:28:21,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:21,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:21,989 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:21,989 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 369 flow. Second operand 7 states and 1232 transitions. [2023-11-12 02:28:21,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 129 transitions, 941 flow [2023-11-12 02:28:22,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 129 transitions, 934 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:28:22,010 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 547 flow [2023-11-12 02:28:22,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=547, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-11-12 02:28:22,011 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-11-12 02:28:22,012 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 547 flow [2023-11-12 02:28:22,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:22,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:22,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:22,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:22,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:22,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:22,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:22,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1768892792, now seen corresponding path program 1 times [2023-11-12 02:28:22,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:22,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257484425] [2023-11-12 02:28:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:22,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:22,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:22,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257484425] [2023-11-12 02:28:22,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257484425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:22,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082989740] [2023-11-12 02:28:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:22,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:22,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:22,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:22,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:28:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:22,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:28:22,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:22,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:28:22,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:22,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082989740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:22,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:28:22,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-12 02:28:22,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126896646] [2023-11-12 02:28:22,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:22,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:28:22,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:22,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:28:22,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:28:22,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-12 02:28:22,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:22,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:22,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-12 02:28:22,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:23,510 INFO L124 PetriNetUnfolderBase]: 2444/4439 cut-off events. [2023-11-12 02:28:23,510 INFO L125 PetriNetUnfolderBase]: For 7059/7059 co-relation queries the response was YES. [2023-11-12 02:28:23,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14302 conditions, 4439 events. 2444/4439 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 23896 event pairs, 549 based on Foata normal form. 68/4507 useless extension candidates. Maximal degree in co-relation 13906. Up to 2062 conditions per place. [2023-11-12 02:28:23,551 INFO L140 encePairwiseOnDemand]: 355/366 looper letters, 107 selfloop transitions, 39 changer transitions 0/148 dead transitions. [2023-11-12 02:28:23,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 148 transitions, 1298 flow [2023-11-12 02:28:23,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:28:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:28:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1231 transitions. [2023-11-12 02:28:23,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804839968774395 [2023-11-12 02:28:23,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1231 transitions. [2023-11-12 02:28:23,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1231 transitions. [2023-11-12 02:28:23,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:23,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1231 transitions. [2023-11-12 02:28:23,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 175.85714285714286) internal successors, (1231), 7 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:23,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:23,579 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:23,579 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 547 flow. Second operand 7 states and 1231 transitions. [2023-11-12 02:28:23,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 148 transitions, 1298 flow [2023-11-12 02:28:23,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 148 transitions, 1252 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-12 02:28:23,613 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 946 flow [2023-11-12 02:28:23,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=946, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2023-11-12 02:28:23,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-11-12 02:28:23,615 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 946 flow [2023-11-12 02:28:23,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:23,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:23,617 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-12 02:28:23,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:23,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:28:23,824 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:23,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2062291422, now seen corresponding path program 1 times [2023-11-12 02:28:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:23,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468126607] [2023-11-12 02:28:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:24,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468126607] [2023-11-12 02:28:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468126607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069235033] [2023-11-12 02:28:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:24,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:24,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:24,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:24,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:28:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:24,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:28:24,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:24,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:28:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:24,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069235033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:28:24,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:28:24,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-12 02:28:24,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357172392] [2023-11-12 02:28:24,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:28:24,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 02:28:24,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:24,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 02:28:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:28:24,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 366 [2023-11-12 02:28:24,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 946 flow. Second operand has 18 states, 18 states have (on average 171.05555555555554) internal successors, (3079), 18 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:24,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:24,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 366 [2023-11-12 02:28:24,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:26,455 INFO L124 PetriNetUnfolderBase]: 4216/7659 cut-off events. [2023-11-12 02:28:26,456 INFO L125 PetriNetUnfolderBase]: For 17566/17566 co-relation queries the response was YES. [2023-11-12 02:28:26,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25702 conditions, 7659 events. 4216/7659 cut-off events. For 17566/17566 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 41559 event pairs, 849 based on Foata normal form. 192/7851 useless extension candidates. Maximal degree in co-relation 25298. Up to 2223 conditions per place. [2023-11-12 02:28:26,511 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 279 selfloop transitions, 55 changer transitions 3/339 dead transitions. [2023-11-12 02:28:26,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 339 transitions, 2781 flow [2023-11-12 02:28:26,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-12 02:28:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-12 02:28:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3444 transitions. [2023-11-12 02:28:26,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49525452976704054 [2023-11-12 02:28:26,524 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3444 transitions. [2023-11-12 02:28:26,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3444 transitions. [2023-11-12 02:28:26,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:26,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3444 transitions. [2023-11-12 02:28:26,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 181.26315789473685) internal successors, (3444), 19 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:26,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 366.0) internal successors, (7320), 20 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:26,552 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 366.0) internal successors, (7320), 20 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:26,552 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 946 flow. Second operand 19 states and 3444 transitions. [2023-11-12 02:28:26,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 339 transitions, 2781 flow [2023-11-12 02:28:26,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 339 transitions, 2735 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-12 02:28:26,608 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 1292 flow [2023-11-12 02:28:26,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1292, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2023-11-12 02:28:26,609 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-11-12 02:28:26,609 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 1292 flow [2023-11-12 02:28:26,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 171.05555555555554) internal successors, (3079), 18 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:26,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:26,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:26,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-12 02:28:26,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:28:26,817 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:26,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash -528047823, now seen corresponding path program 1 times [2023-11-12 02:28:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:26,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95068668] [2023-11-12 02:28:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:26,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:27,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:27,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95068668] [2023-11-12 02:28:27,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95068668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:27,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250595880] [2023-11-12 02:28:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:27,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:27,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:27,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:27,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:28:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:27,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:28:27,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:27,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:28:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:27,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250595880] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:28:27,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:28:27,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-12 02:28:27,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664649079] [2023-11-12 02:28:27,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:28:27,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:28:27,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:28:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:28:27,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 366 [2023-11-12 02:28:27,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 1292 flow. Second operand has 16 states, 16 states have (on average 164.125) internal successors, (2626), 16 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:27,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:27,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 366 [2023-11-12 02:28:27,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:29,217 INFO L124 PetriNetUnfolderBase]: 4806/8725 cut-off events. [2023-11-12 02:28:29,217 INFO L125 PetriNetUnfolderBase]: For 23961/23961 co-relation queries the response was YES. [2023-11-12 02:28:29,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30185 conditions, 8725 events. 4806/8725 cut-off events. For 23961/23961 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 49072 event pairs, 785 based on Foata normal form. 116/8841 useless extension candidates. Maximal degree in co-relation 29774. Up to 2460 conditions per place. [2023-11-12 02:28:29,292 INFO L140 encePairwiseOnDemand]: 354/366 looper letters, 164 selfloop transitions, 101 changer transitions 3/270 dead transitions. [2023-11-12 02:28:29,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 270 transitions, 2652 flow [2023-11-12 02:28:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 02:28:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-12 02:28:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2886 transitions. [2023-11-12 02:28:29,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46383799421407906 [2023-11-12 02:28:29,308 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2886 transitions. [2023-11-12 02:28:29,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2886 transitions. [2023-11-12 02:28:29,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:29,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2886 transitions. [2023-11-12 02:28:29,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 169.76470588235293) internal successors, (2886), 17 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:29,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 366.0) internal successors, (6588), 18 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:29,332 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 366.0) internal successors, (6588), 18 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:29,333 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 1292 flow. Second operand 17 states and 2886 transitions. [2023-11-12 02:28:29,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 270 transitions, 2652 flow [2023-11-12 02:28:29,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 270 transitions, 2477 flow, removed 64 selfloop flow, removed 6 redundant places. [2023-11-12 02:28:29,459 INFO L231 Difference]: Finished difference. Result has 125 places, 136 transitions, 1711 flow [2023-11-12 02:28:29,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1711, PETRI_PLACES=125, PETRI_TRANSITIONS=136} [2023-11-12 02:28:29,460 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2023-11-12 02:28:29,460 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 136 transitions, 1711 flow [2023-11-12 02:28:29,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 164.125) internal successors, (2626), 16 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:29,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:29,461 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:29,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:29,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:28:29,668 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:29,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1813940984, now seen corresponding path program 1 times [2023-11-12 02:28:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44145183] [2023-11-12 02:28:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:29,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:29,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:29,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44145183] [2023-11-12 02:28:29,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44145183] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:29,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584158900] [2023-11-12 02:28:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:29,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:29,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:29,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:29,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:28:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:30,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:28:30,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:30,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:28:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:30,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584158900] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:28:30,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:28:30,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-11-12 02:28:30,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240657408] [2023-11-12 02:28:30,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:28:30,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:28:30,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:28:30,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:28:30,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 366 [2023-11-12 02:28:30,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 136 transitions, 1711 flow. Second operand has 16 states, 16 states have (on average 165.25) internal successors, (2644), 16 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:30,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:30,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 366 [2023-11-12 02:28:30,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:32,662 INFO L124 PetriNetUnfolderBase]: 5127/9338 cut-off events. [2023-11-12 02:28:32,662 INFO L125 PetriNetUnfolderBase]: For 23629/23629 co-relation queries the response was YES. [2023-11-12 02:28:32,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32982 conditions, 9338 events. 5127/9338 cut-off events. For 23629/23629 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 53895 event pairs, 805 based on Foata normal form. 90/9428 useless extension candidates. Maximal degree in co-relation 32568. Up to 4942 conditions per place. [2023-11-12 02:28:32,725 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 162 selfloop transitions, 112 changer transitions 3/279 dead transitions. [2023-11-12 02:28:32,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 279 transitions, 2920 flow [2023-11-12 02:28:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-12 02:28:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-12 02:28:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3227 transitions. [2023-11-12 02:28:32,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46404946793212537 [2023-11-12 02:28:32,735 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3227 transitions. [2023-11-12 02:28:32,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3227 transitions. [2023-11-12 02:28:32,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:32,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3227 transitions. [2023-11-12 02:28:32,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 169.8421052631579) internal successors, (3227), 19 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:32,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 366.0) internal successors, (7320), 20 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:32,759 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 366.0) internal successors, (7320), 20 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:32,759 INFO L175 Difference]: Start difference. First operand has 125 places, 136 transitions, 1711 flow. Second operand 19 states and 3227 transitions. [2023-11-12 02:28:32,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 279 transitions, 2920 flow [2023-11-12 02:28:32,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 279 transitions, 2756 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-12 02:28:32,903 INFO L231 Difference]: Finished difference. Result has 134 places, 151 transitions, 1959 flow [2023-11-12 02:28:32,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1959, PETRI_PLACES=134, PETRI_TRANSITIONS=151} [2023-11-12 02:28:32,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2023-11-12 02:28:32,904 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 151 transitions, 1959 flow [2023-11-12 02:28:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 165.25) internal successors, (2644), 16 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:32,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:32,906 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:32,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-12 02:28:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:28:33,112 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:33,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:33,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1360943057, now seen corresponding path program 2 times [2023-11-12 02:28:33,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728223437] [2023-11-12 02:28:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:28:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728223437] [2023-11-12 02:28:33,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728223437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:33,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72669026] [2023-11-12 02:28:33,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:28:33,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:33,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:33,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:28:33,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:28:33,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:28:33,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:28:33,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:28:33,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:28:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:28:33,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72669026] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:28:33,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:28:33,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-11-12 02:28:33,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016594136] [2023-11-12 02:28:33,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:28:33,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:28:33,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:33,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:28:33,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:28:34,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-12 02:28:34,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 151 transitions, 1959 flow. Second operand has 16 states, 16 states have (on average 166.125) internal successors, (2658), 16 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:34,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:34,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-12 02:28:34,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:36,845 INFO L124 PetriNetUnfolderBase]: 6983/12682 cut-off events. [2023-11-12 02:28:36,845 INFO L125 PetriNetUnfolderBase]: For 35352/35352 co-relation queries the response was YES. [2023-11-12 02:28:36,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45035 conditions, 12682 events. 6983/12682 cut-off events. For 35352/35352 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 78089 event pairs, 1097 based on Foata normal form. 76/12758 useless extension candidates. Maximal degree in co-relation 44622. Up to 2771 conditions per place. [2023-11-12 02:28:36,932 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 262 selfloop transitions, 147 changer transitions 3/414 dead transitions. [2023-11-12 02:28:36,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 414 transitions, 4405 flow [2023-11-12 02:28:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-12 02:28:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-12 02:28:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3473 transitions. [2023-11-12 02:28:36,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744535519125683 [2023-11-12 02:28:36,939 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3473 transitions. [2023-11-12 02:28:36,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3473 transitions. [2023-11-12 02:28:36,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:36,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3473 transitions. [2023-11-12 02:28:36,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 173.65) internal successors, (3473), 20 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:36,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 366.0) internal successors, (7686), 21 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:36,960 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 366.0) internal successors, (7686), 21 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:36,961 INFO L175 Difference]: Start difference. First operand has 134 places, 151 transitions, 1959 flow. Second operand 20 states and 3473 transitions. [2023-11-12 02:28:36,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 414 transitions, 4405 flow [2023-11-12 02:28:37,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 414 transitions, 3653 flow, removed 146 selfloop flow, removed 17 redundant places. [2023-11-12 02:28:37,140 INFO L231 Difference]: Finished difference. Result has 142 places, 207 transitions, 2536 flow [2023-11-12 02:28:37,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2536, PETRI_PLACES=142, PETRI_TRANSITIONS=207} [2023-11-12 02:28:37,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2023-11-12 02:28:37,142 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 207 transitions, 2536 flow [2023-11-12 02:28:37,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 166.125) internal successors, (2658), 16 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:37,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:37,143 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:37,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:37,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:28:37,349 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:37,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash 119065212, now seen corresponding path program 1 times [2023-11-12 02:28:37,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:37,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783035524] [2023-11-12 02:28:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:37,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:37,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:37,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783035524] [2023-11-12 02:28:37,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783035524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:37,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395916405] [2023-11-12 02:28:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:37,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:37,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:37,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:28:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:38,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:28:38,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:38,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:28:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:38,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395916405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:28:38,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:28:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-12 02:28:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020308878] [2023-11-12 02:28:38,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:28:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-12 02:28:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-12 02:28:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-12 02:28:38,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-12 02:28:38,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 207 transitions, 2536 flow. Second operand has 20 states, 20 states have (on average 166.1) internal successors, (3322), 20 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:38,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:38,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-12 02:28:38,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:42,166 INFO L124 PetriNetUnfolderBase]: 9478/17191 cut-off events. [2023-11-12 02:28:42,166 INFO L125 PetriNetUnfolderBase]: For 38600/38600 co-relation queries the response was YES. [2023-11-12 02:28:42,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59701 conditions, 17191 events. 9478/17191 cut-off events. For 38600/38600 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 106515 event pairs, 1537 based on Foata normal form. 96/17287 useless extension candidates. Maximal degree in co-relation 59292. Up to 6700 conditions per place. [2023-11-12 02:28:42,291 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 279 selfloop transitions, 249 changer transitions 3/533 dead transitions. [2023-11-12 02:28:42,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 533 transitions, 5946 flow [2023-11-12 02:28:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-12 02:28:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-12 02:28:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4316 transitions. [2023-11-12 02:28:42,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47169398907103827 [2023-11-12 02:28:42,297 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4316 transitions. [2023-11-12 02:28:42,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4316 transitions. [2023-11-12 02:28:42,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:42,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4316 transitions. [2023-11-12 02:28:42,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 172.64) internal successors, (4316), 25 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:42,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 366.0) internal successors, (9516), 26 states have internal predecessors, (9516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:42,324 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 366.0) internal successors, (9516), 26 states have internal predecessors, (9516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:42,324 INFO L175 Difference]: Start difference. First operand has 142 places, 207 transitions, 2536 flow. Second operand 25 states and 4316 transitions. [2023-11-12 02:28:42,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 533 transitions, 5946 flow [2023-11-12 02:28:42,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 533 transitions, 5615 flow, removed 50 selfloop flow, removed 11 redundant places. [2023-11-12 02:28:42,580 INFO L231 Difference]: Finished difference. Result has 161 places, 319 transitions, 4438 flow [2023-11-12 02:28:42,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4438, PETRI_PLACES=161, PETRI_TRANSITIONS=319} [2023-11-12 02:28:42,582 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2023-11-12 02:28:42,582 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 319 transitions, 4438 flow [2023-11-12 02:28:42,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 166.1) internal successors, (3322), 20 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:42,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:42,584 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:42,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:42,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:28:42,791 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:42,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:42,791 INFO L85 PathProgramCache]: Analyzing trace with hash 522954869, now seen corresponding path program 3 times [2023-11-12 02:28:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:42,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499004747] [2023-11-12 02:28:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:42,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:28:43,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:43,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499004747] [2023-11-12 02:28:43,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499004747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:43,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832905759] [2023-11-12 02:28:43,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:28:43,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:43,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:43,207 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:28:43,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:28:43,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 02:28:43,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:28:43,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:28:43,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:28:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-12 02:28:43,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:28:43,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832905759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:43,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:28:43,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2023-11-12 02:28:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514658061] [2023-11-12 02:28:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:43,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:28:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:28:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:28:43,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 366 [2023-11-12 02:28:43,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 319 transitions, 4438 flow. Second operand has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:43,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:43,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 366 [2023-11-12 02:28:43,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:47,444 INFO L124 PetriNetUnfolderBase]: 9448/17175 cut-off events. [2023-11-12 02:28:47,444 INFO L125 PetriNetUnfolderBase]: For 42976/42976 co-relation queries the response was YES. [2023-11-12 02:28:47,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60995 conditions, 17175 events. 9448/17175 cut-off events. For 42976/42976 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 108961 event pairs, 2277 based on Foata normal form. 44/17219 useless extension candidates. Maximal degree in co-relation 60584. Up to 7900 conditions per place. [2023-11-12 02:28:47,590 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 114 selfloop transitions, 232 changer transitions 0/348 dead transitions. [2023-11-12 02:28:47,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 348 transitions, 5151 flow [2023-11-12 02:28:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:28:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:28:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1190 transitions. [2023-11-12 02:28:47,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644808743169399 [2023-11-12 02:28:47,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1190 transitions. [2023-11-12 02:28:47,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1190 transitions. [2023-11-12 02:28:47,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:47,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1190 transitions. [2023-11-12 02:28:47,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:47,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:47,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 366.0) internal successors, (2928), 8 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:47,605 INFO L175 Difference]: Start difference. First operand has 161 places, 319 transitions, 4438 flow. Second operand 7 states and 1190 transitions. [2023-11-12 02:28:47,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 348 transitions, 5151 flow [2023-11-12 02:28:47,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 348 transitions, 4880 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-11-12 02:28:47,889 INFO L231 Difference]: Finished difference. Result has 156 places, 312 transitions, 4515 flow [2023-11-12 02:28:47,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=4051, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4515, PETRI_PLACES=156, PETRI_TRANSITIONS=312} [2023-11-12 02:28:47,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2023-11-12 02:28:47,891 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 312 transitions, 4515 flow [2023-11-12 02:28:47,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:47,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:47,891 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:47,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:48,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8665f7d0-3085-4f65-80ac-7757c3fbf2b1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:28:48,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-12 02:28:48,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:48,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2056966375, now seen corresponding path program 4 times [2023-11-12 02:28:48,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:48,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771101396] [2023-11-12 02:28:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms