./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 e7bb482b 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_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:59:02,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:59:02,949 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:59:02,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:59:02,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:59:03,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:59:03,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:59:03,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:59:03,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:59:03,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:59:03,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:59:03,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:59:03,028 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:59:03,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:59:03,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:59:03,032 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:59:03,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:59:03,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:59:03,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:59:03,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:59:03,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:59:03,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:59:03,035 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:59:03,036 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:59:03,036 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:59:03,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:59:03,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:59:03,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:59:03,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:59:03,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:59:03,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:03,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:59:03,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:59:03,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:59:03,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:59:03,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:59:03,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:59:03,043 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:59:03,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:59:03,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:59:03,044 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:59:03,044 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_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2023-11-06 21:59:03,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:59:03,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:59:03,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:59:03,463 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:59:03,464 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:59:03,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/stack_longer-1.i [2023-11-06 21:59:06,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:59:07,341 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:59:07,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/sv-benchmarks/c/pthread/stack_longer-1.i [2023-11-06 21:59:07,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/data/27198df23/353b87dd9d8f4f2dadac569ee4576dc0/FLAGe968fe8d6 [2023-11-06 21:59:07,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/data/27198df23/353b87dd9d8f4f2dadac569ee4576dc0 [2023-11-06 21:59:07,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:59:07,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:59:07,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:07,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:59:07,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:59:07,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:07" (1/1) ... [2023-11-06 21:59:07,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2c6696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:07, skipping insertion in model container [2023-11-06 21:59:07,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:59:07" (1/1) ... [2023-11-06 21:59:07,502 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:59:08,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:08,258 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:59:08,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:59:08,404 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:59:08,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08 WrapperNode [2023-11-06 21:59:08,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:59:08,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:08,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:59:08,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:59:08,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,514 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 169 [2023-11-06 21:59:08,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:59:08,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:59:08,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:59:08,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:59:08,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:59:08,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:59:08,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:59:08,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:59:08,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (1/1) ... [2023-11-06 21:59:08,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:59:08,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:08,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:59:08,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:59:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 21:59:08,675 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 21:59:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 21:59:08,675 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 21:59:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:59:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:59:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:59:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:59:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:59:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:59:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:59:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:59:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:59:08,683 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:59:08,936 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:59:08,939 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:59:09,305 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:59:09,316 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:59:09,317 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:59:09,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:09 BoogieIcfgContainer [2023-11-06 21:59:09,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:59:09,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:59:09,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:59:09,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:59:09,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:59:07" (1/3) ... [2023-11-06 21:59:09,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647f49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:09, skipping insertion in model container [2023-11-06 21:59:09,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:59:08" (2/3) ... [2023-11-06 21:59:09,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647f49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:59:09, skipping insertion in model container [2023-11-06 21:59:09,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:59:09" (3/3) ... [2023-11-06 21:59:09,330 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2023-11-06 21:59:09,340 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:59:09,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:59:09,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 21:59:09,353 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:59:09,535 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:59:09,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 190 transitions, 394 flow [2023-11-06 21:59:09,745 INFO L124 PetriNetUnfolderBase]: 12/188 cut-off events. [2023-11-06 21:59:09,746 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:59:09,756 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. [2023-11-06 21:59:09,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 190 transitions, 394 flow [2023-11-06 21:59:09,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 178 transitions, 365 flow [2023-11-06 21:59:09,773 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:59:09,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 178 transitions, 365 flow [2023-11-06 21:59:09,794 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 178 transitions, 365 flow [2023-11-06 21:59:09,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 178 transitions, 365 flow [2023-11-06 21:59:09,853 INFO L124 PetriNetUnfolderBase]: 12/178 cut-off events. [2023-11-06 21:59:09,853 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:59:09,861 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. [2023-11-06 21:59:09,871 INFO L119 LiptonReduction]: Number of co-enabled transitions 11748 [2023-11-06 21:59:15,611 INFO L134 LiptonReduction]: Checked pairs total: 15753 [2023-11-06 21:59:15,612 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-11-06 21:59:15,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:59:15,636 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10c51f06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:59:15,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-06 21:59:15,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:59:15,644 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-11-06 21:59:15,645 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 21:59:15,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:15,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:15,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:15,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash -654296763, now seen corresponding path program 1 times [2023-11-06 21:59:15,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:15,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646496091] [2023-11-06 21:59:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:15,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:16,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:16,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646496091] [2023-11-06 21:59:16,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646496091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:16,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:16,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:16,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992022118] [2023-11-06 21:59:16,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:16,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:16,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:16,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-06 21:59:16,136 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) [2023-11-06 21:59:16,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:16,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-06 21:59:16,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:16,638 INFO L124 PetriNetUnfolderBase]: 1327/2162 cut-off events. [2023-11-06 21:59:16,638 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-06 21:59:16,642 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. [2023-11-06 21:59:16,661 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 63 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-06 21:59:16,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 69 transitions, 287 flow [2023-11-06 21:59:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-11-06 21:59:16,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382513661202186 [2023-11-06 21:59:16,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-11-06 21:59:16,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-11-06 21:59:16,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:16,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-11-06 21:59:16,696 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) [2023-11-06 21:59:16,704 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) [2023-11-06 21:59:16,706 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) [2023-11-06 21:59:16,708 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 591 transitions. [2023-11-06 21:59:16,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 69 transitions, 287 flow [2023-11-06 21:59:16,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 279 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:59:16,717 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 122 flow [2023-11-06 21:59:16,720 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} [2023-11-06 21:59:16,724 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-11-06 21:59:16,724 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 122 flow [2023-11-06 21:59:16,725 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) [2023-11-06 21:59:16,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:16,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:16,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:59:16,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:16,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:16,727 INFO L85 PathProgramCache]: Analyzing trace with hash 777936947, now seen corresponding path program 1 times [2023-11-06 21:59:16,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:16,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335165935] [2023-11-06 21:59:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:16,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:16,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335165935] [2023-11-06 21:59:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335165935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:16,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:16,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:16,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217676967] [2023-11-06 21:59:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:16,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:16,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-06 21:59:16,900 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) [2023-11-06 21:59:16,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:16,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-06 21:59:16,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:17,477 INFO L124 PetriNetUnfolderBase]: 1959/3328 cut-off events. [2023-11-06 21:59:17,477 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2023-11-06 21:59:17,483 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. [2023-11-06 21:59:17,506 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 72 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-06 21:59:17,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 76 transitions, 365 flow [2023-11-06 21:59:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-11-06 21:59:17,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373406193078324 [2023-11-06 21:59:17,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-11-06 21:59:17,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-11-06 21:59:17,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:17,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-11-06 21:59:17,513 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) [2023-11-06 21:59:17,517 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) [2023-11-06 21:59:17,518 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) [2023-11-06 21:59:17,518 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 122 flow. Second operand 3 states and 590 transitions. [2023-11-06 21:59:17,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 76 transitions, 365 flow [2023-11-06 21:59:17,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 76 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:17,527 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 130 flow [2023-11-06 21:59:17,527 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} [2023-11-06 21:59:17,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-06 21:59:17,528 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 130 flow [2023-11-06 21:59:17,529 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) [2023-11-06 21:59:17,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:17,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:17,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:59:17,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:17,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1698453809, now seen corresponding path program 1 times [2023-11-06 21:59:17,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:17,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095113921] [2023-11-06 21:59:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:17,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:17,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:17,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095113921] [2023-11-06 21:59:17,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095113921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:17,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:17,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:17,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714603840] [2023-11-06 21:59:17,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:17,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:17,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:17,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:17,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-06 21:59:17,719 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) [2023-11-06 21:59:17,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:17,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-06 21:59:17,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:18,580 INFO L124 PetriNetUnfolderBase]: 3087/4996 cut-off events. [2023-11-06 21:59:18,584 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2023-11-06 21:59:18,595 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. [2023-11-06 21:59:18,634 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 74 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-11-06 21:59:18,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 388 flow [2023-11-06 21:59:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-11-06 21:59:18,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373406193078324 [2023-11-06 21:59:18,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-11-06 21:59:18,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-11-06 21:59:18,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:18,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-11-06 21:59:18,642 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) [2023-11-06 21:59:18,646 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) [2023-11-06 21:59:18,648 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) [2023-11-06 21:59:18,648 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 130 flow. Second operand 3 states and 590 transitions. [2023-11-06 21:59:18,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 388 flow [2023-11-06 21:59:18,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 78 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:18,656 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 144 flow [2023-11-06 21:59:18,657 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} [2023-11-06 21:59:18,659 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-06 21:59:18,659 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 144 flow [2023-11-06 21:59:18,660 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) [2023-11-06 21:59:18,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:18,660 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:18,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:59:18,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:18,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:18,661 INFO L85 PathProgramCache]: Analyzing trace with hash 600803712, now seen corresponding path program 1 times [2023-11-06 21:59:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:18,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113908319] [2023-11-06 21:59:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:18,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:18,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:18,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113908319] [2023-11-06 21:59:18,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113908319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:18,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:18,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293789316] [2023-11-06 21:59:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:18,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:18,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-06 21:59:18,824 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) [2023-11-06 21:59:18,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:18,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-06 21:59:18,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:19,508 INFO L124 PetriNetUnfolderBase]: 2777/4684 cut-off events. [2023-11-06 21:59:19,508 INFO L125 PetriNetUnfolderBase]: For 730/730 co-relation queries the response was YES. [2023-11-06 21:59:19,522 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. [2023-11-06 21:59:19,555 INFO L140 encePairwiseOnDemand]: 364/366 looper letters, 61 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-06 21:59:19,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 329 flow [2023-11-06 21:59:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-11-06 21:59:19,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52367941712204 [2023-11-06 21:59:19,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-11-06 21:59:19,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-11-06 21:59:19,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:19,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-11-06 21:59:19,565 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) [2023-11-06 21:59:19,569 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) [2023-11-06 21:59:19,572 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) [2023-11-06 21:59:19,573 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 144 flow. Second operand 3 states and 575 transitions. [2023-11-06 21:59:19,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 329 flow [2023-11-06 21:59:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:19,576 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 140 flow [2023-11-06 21:59:19,577 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} [2023-11-06 21:59:19,578 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-06 21:59:19,578 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 140 flow [2023-11-06 21:59:19,579 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) [2023-11-06 21:59:19,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:19,579 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:19,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:59:19,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:19,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash 600803833, now seen corresponding path program 1 times [2023-11-06 21:59:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:19,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988980919] [2023-11-06 21:59:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:19,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988980919] [2023-11-06 21:59:19,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988980919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:19,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:19,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349292480] [2023-11-06 21:59:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:19,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:19,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 366 [2023-11-06 21:59:19,688 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) [2023-11-06 21:59:19,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:19,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 366 [2023-11-06 21:59:19,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:20,279 INFO L124 PetriNetUnfolderBase]: 2618/4425 cut-off events. [2023-11-06 21:59:20,279 INFO L125 PetriNetUnfolderBase]: For 668/668 co-relation queries the response was YES. [2023-11-06 21:59:20,290 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. [2023-11-06 21:59:20,315 INFO L140 encePairwiseOnDemand]: 362/366 looper letters, 58 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-11-06 21:59:20,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 325 flow [2023-11-06 21:59:20,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-11-06 21:59:20,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209471766848816 [2023-11-06 21:59:20,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-11-06 21:59:20,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-11-06 21:59:20,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:20,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-11-06 21:59:20,324 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) [2023-11-06 21:59:20,328 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) [2023-11-06 21:59:20,329 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) [2023-11-06 21:59:20,329 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 140 flow. Second operand 3 states and 572 transitions. [2023-11-06 21:59:20,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 325 flow [2023-11-06 21:59:20,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:20,333 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 151 flow [2023-11-06 21:59:20,333 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} [2023-11-06 21:59:20,334 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-11-06 21:59:20,335 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 151 flow [2023-11-06 21:59:20,335 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) [2023-11-06 21:59:20,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:20,336 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:59:20,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:20,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1319847135, now seen corresponding path program 1 times [2023-11-06 21:59:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:20,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567635333] [2023-11-06 21:59:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:20,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567635333] [2023-11-06 21:59:20,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567635333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784907330] [2023-11-06 21:59:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:20,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:20,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:20,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:20,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:59:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:20,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:59:20,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:20,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:20,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784907330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:20,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:20,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-06 21:59:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594202917] [2023-11-06 21:59:20,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:20,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:59:20,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:59:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:59:20,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 366 [2023-11-06 21:59:20,978 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) [2023-11-06 21:59:20,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:20,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 366 [2023-11-06 21:59:20,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:22,541 INFO L124 PetriNetUnfolderBase]: 4836/8005 cut-off events. [2023-11-06 21:59:22,542 INFO L125 PetriNetUnfolderBase]: For 3713/3713 co-relation queries the response was YES. [2023-11-06 21:59:22,565 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. [2023-11-06 21:59:22,609 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 236 selfloop transitions, 42 changer transitions 0/280 dead transitions. [2023-11-06 21:59:22,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 280 transitions, 1536 flow [2023-11-06 21:59:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:59:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 21:59:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2937 transitions. [2023-11-06 21:59:22,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015368852459017 [2023-11-06 21:59:22,623 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2937 transitions. [2023-11-06 21:59:22,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2937 transitions. [2023-11-06 21:59:22,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:22,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2937 transitions. [2023-11-06 21:59:22,639 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) [2023-11-06 21:59:22,656 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) [2023-11-06 21:59:22,659 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) [2023-11-06 21:59:22,659 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 151 flow. Second operand 16 states and 2937 transitions. [2023-11-06 21:59:22,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 280 transitions, 1536 flow [2023-11-06 21:59:22,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 280 transitions, 1493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:22,678 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 449 flow [2023-11-06 21:59:22,678 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} [2023-11-06 21:59:22,682 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-11-06 21:59:22,682 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 449 flow [2023-11-06 21:59:22,683 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) [2023-11-06 21:59:22,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:22,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:22,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:22,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:22,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:22,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:22,893 INFO L85 PathProgramCache]: Analyzing trace with hash -499289299, now seen corresponding path program 1 times [2023-11-06 21:59:22,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:22,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719040506] [2023-11-06 21:59:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:22,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:23,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719040506] [2023-11-06 21:59:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719040506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:23,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:23,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:23,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47042170] [2023-11-06 21:59:23,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:23,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:23,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:23,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:23,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 366 [2023-11-06 21:59:23,051 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) [2023-11-06 21:59:23,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:23,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 366 [2023-11-06 21:59:23,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:23,581 INFO L124 PetriNetUnfolderBase]: 1615/2962 cut-off events. [2023-11-06 21:59:23,582 INFO L125 PetriNetUnfolderBase]: For 2707/2707 co-relation queries the response was YES. [2023-11-06 21:59:23,591 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. [2023-11-06 21:59:23,606 INFO L140 encePairwiseOnDemand]: 359/366 looper letters, 58 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2023-11-06 21:59:23,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 461 flow [2023-11-06 21:59:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-11-06 21:59:23,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51183970856102 [2023-11-06 21:59:23,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-11-06 21:59:23,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-11-06 21:59:23,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:23,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-11-06 21:59:23,614 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) [2023-11-06 21:59:23,618 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) [2023-11-06 21:59:23,619 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) [2023-11-06 21:59:23,619 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 449 flow. Second operand 3 states and 562 transitions. [2023-11-06 21:59:23,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 461 flow [2023-11-06 21:59:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 425 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-06 21:59:23,658 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 265 flow [2023-11-06 21:59:23,659 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} [2023-11-06 21:59:23,659 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-11-06 21:59:23,660 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 265 flow [2023-11-06 21:59:23,660 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) [2023-11-06 21:59:23,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:23,661 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:23,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:59:23,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:23,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2032552597, now seen corresponding path program 1 times [2023-11-06 21:59:23,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:23,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541385179] [2023-11-06 21:59:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:23,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:23,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541385179] [2023-11-06 21:59:23,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541385179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:23,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550808828] [2023-11-06 21:59:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:23,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:23,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:23,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:59:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:59:23,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:24,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550808828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 21:59:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117428483] [2023-11-06 21:59:24,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:59:24,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:59:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:24,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 366 [2023-11-06 21:59:24,051 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) [2023-11-06 21:59:24,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:24,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 366 [2023-11-06 21:59:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:24,856 INFO L124 PetriNetUnfolderBase]: 1646/3095 cut-off events. [2023-11-06 21:59:24,857 INFO L125 PetriNetUnfolderBase]: For 2181/2181 co-relation queries the response was YES. [2023-11-06 21:59:24,869 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. [2023-11-06 21:59:24,888 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 93 selfloop transitions, 18 changer transitions 0/113 dead transitions. [2023-11-06 21:59:24,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 113 transitions, 712 flow [2023-11-06 21:59:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:59:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:59:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1101 transitions. [2023-11-06 21:59:24,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013661202185792 [2023-11-06 21:59:24,896 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1101 transitions. [2023-11-06 21:59:24,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1101 transitions. [2023-11-06 21:59:24,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:24,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1101 transitions. [2023-11-06 21:59:24,902 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) [2023-11-06 21:59:24,909 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) [2023-11-06 21:59:24,911 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) [2023-11-06 21:59:24,911 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 265 flow. Second operand 6 states and 1101 transitions. [2023-11-06 21:59:24,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 113 transitions, 712 flow [2023-11-06 21:59:24,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 693 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:24,924 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 344 flow [2023-11-06 21:59:24,924 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} [2023-11-06 21:59:24,928 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-06 21:59:24,928 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 344 flow [2023-11-06 21:59:24,929 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) [2023-11-06 21:59:24,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:24,929 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:24,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:25,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:25,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:25,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:25,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1807957664, now seen corresponding path program 1 times [2023-11-06 21:59:25,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875244880] [2023-11-06 21:59:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:25,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:25,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875244880] [2023-11-06 21:59:25,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875244880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:25,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:25,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:25,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180377684] [2023-11-06 21:59:25,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:25,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:25,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 366 [2023-11-06 21:59:25,279 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) [2023-11-06 21:59:25,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:25,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 366 [2023-11-06 21:59:25,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:26,044 INFO L124 PetriNetUnfolderBase]: 1940/3635 cut-off events. [2023-11-06 21:59:26,045 INFO L125 PetriNetUnfolderBase]: For 3598/3598 co-relation queries the response was YES. [2023-11-06 21:59:26,057 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. [2023-11-06 21:59:26,072 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 106 selfloop transitions, 6 changer transitions 3/117 dead transitions. [2023-11-06 21:59:26,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 833 flow [2023-11-06 21:59:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 937 transitions. [2023-11-06 21:59:26,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120218579234973 [2023-11-06 21:59:26,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 937 transitions. [2023-11-06 21:59:26,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 937 transitions. [2023-11-06 21:59:26,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:26,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 937 transitions. [2023-11-06 21:59:26,083 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) [2023-11-06 21:59:26,087 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) [2023-11-06 21:59:26,088 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) [2023-11-06 21:59:26,089 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 344 flow. Second operand 5 states and 937 transitions. [2023-11-06 21:59:26,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 833 flow [2023-11-06 21:59:26,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 817 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:26,106 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 367 flow [2023-11-06 21:59:26,107 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} [2023-11-06 21:59:26,108 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-11-06 21:59:26,108 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 367 flow [2023-11-06 21:59:26,109 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) [2023-11-06 21:59:26,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:26,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:59:26,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:59:26,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:26,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1326176938, now seen corresponding path program 1 times [2023-11-06 21:59:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:26,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384352985] [2023-11-06 21:59:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:26,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384352985] [2023-11-06 21:59:26,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384352985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:26,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:26,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:26,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437533595] [2023-11-06 21:59:26,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:26,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:26,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:26,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 366 [2023-11-06 21:59:26,214 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) [2023-11-06 21:59:26,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:26,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 366 [2023-11-06 21:59:26,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:26,702 INFO L124 PetriNetUnfolderBase]: 1743/3222 cut-off events. [2023-11-06 21:59:26,702 INFO L125 PetriNetUnfolderBase]: For 3729/3741 co-relation queries the response was YES. [2023-11-06 21:59:26,718 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. [2023-11-06 21:59:26,734 INFO L140 encePairwiseOnDemand]: 364/366 looper letters, 68 selfloop transitions, 1 changer transitions 1/72 dead transitions. [2023-11-06 21:59:26,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 568 flow [2023-11-06 21:59:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-11-06 21:59:26,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154826958105647 [2023-11-06 21:59:26,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-11-06 21:59:26,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-11-06 21:59:26,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:26,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-11-06 21:59:26,742 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) [2023-11-06 21:59:26,745 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) [2023-11-06 21:59:26,746 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) [2023-11-06 21:59:26,746 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 367 flow. Second operand 3 states and 566 transitions. [2023-11-06 21:59:26,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 568 flow [2023-11-06 21:59:26,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 560 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:26,762 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 358 flow [2023-11-06 21:59:26,763 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} [2023-11-06 21:59:26,764 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-11-06 21:59:26,765 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 358 flow [2023-11-06 21:59:26,765 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) [2023-11-06 21:59:26,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:26,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:59:26,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:59:26,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:26,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:26,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1326176939, now seen corresponding path program 1 times [2023-11-06 21:59:26,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:26,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576698970] [2023-11-06 21:59:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:26,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:26,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:26,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576698970] [2023-11-06 21:59:26,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576698970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:26,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:26,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511479966] [2023-11-06 21:59:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:26,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:26,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:26,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 366 [2023-11-06 21:59:26,863 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) [2023-11-06 21:59:26,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:26,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 366 [2023-11-06 21:59:26,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:27,350 INFO L124 PetriNetUnfolderBase]: 1595/2910 cut-off events. [2023-11-06 21:59:27,351 INFO L125 PetriNetUnfolderBase]: For 3510/3522 co-relation queries the response was YES. [2023-11-06 21:59:27,361 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. [2023-11-06 21:59:27,373 INFO L140 encePairwiseOnDemand]: 362/366 looper letters, 65 selfloop transitions, 4 changer transitions 1/72 dead transitions. [2023-11-06 21:59:27,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 560 flow [2023-11-06 21:59:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 563 transitions. [2023-11-06 21:59:27,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127504553734062 [2023-11-06 21:59:27,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 563 transitions. [2023-11-06 21:59:27,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 563 transitions. [2023-11-06 21:59:27,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:27,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 563 transitions. [2023-11-06 21:59:27,381 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) [2023-11-06 21:59:27,385 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) [2023-11-06 21:59:27,386 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) [2023-11-06 21:59:27,386 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 358 flow. Second operand 3 states and 563 transitions. [2023-11-06 21:59:27,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 560 flow [2023-11-06 21:59:27,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:27,401 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 369 flow [2023-11-06 21:59:27,402 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} [2023-11-06 21:59:27,402 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-11-06 21:59:27,403 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 369 flow [2023-11-06 21:59:27,403 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) [2023-11-06 21:59:27,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:27,404 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] [2023-11-06 21:59:27,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:59:27,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:27,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1359358909, now seen corresponding path program 1 times [2023-11-06 21:59:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:27,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758865635] [2023-11-06 21:59:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:27,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:27,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:27,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758865635] [2023-11-06 21:59:27,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758865635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:27,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457490194] [2023-11-06 21:59:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:27,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:27,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:27,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:27,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:59:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:27,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:59:27,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 21:59:27,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457490194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-06 21:59:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889890438] [2023-11-06 21:59:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:27,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:59:27,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:59:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:59:27,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-06 21:59:27,990 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) [2023-11-06 21:59:27,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:27,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-06 21:59:27,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:28,716 INFO L124 PetriNetUnfolderBase]: 1956/3565 cut-off events. [2023-11-06 21:59:28,716 INFO L125 PetriNetUnfolderBase]: For 4615/4615 co-relation queries the response was YES. [2023-11-06 21:59:28,734 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. [2023-11-06 21:59:28,750 INFO L140 encePairwiseOnDemand]: 355/366 looper letters, 106 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2023-11-06 21:59:28,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 129 transitions, 941 flow [2023-11-06 21:59:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1232 transitions. [2023-11-06 21:59:28,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808743169398907 [2023-11-06 21:59:28,758 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1232 transitions. [2023-11-06 21:59:28,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1232 transitions. [2023-11-06 21:59:28,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:28,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1232 transitions. [2023-11-06 21:59:28,763 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) [2023-11-06 21:59:28,769 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) [2023-11-06 21:59:28,771 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) [2023-11-06 21:59:28,771 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 369 flow. Second operand 7 states and 1232 transitions. [2023-11-06 21:59:28,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 129 transitions, 941 flow [2023-11-06 21:59:28,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 129 transitions, 934 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:28,788 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 547 flow [2023-11-06 21:59:28,789 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} [2023-11-06 21:59:28,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2023-11-06 21:59:28,790 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 547 flow [2023-11-06 21:59:28,791 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) [2023-11-06 21:59:28,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:28,791 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] [2023-11-06 21:59:28,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 21:59:28,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 21:59:28,998 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:28,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1768892792, now seen corresponding path program 1 times [2023-11-06 21:59:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867019523] [2023-11-06 21:59:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:29,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:29,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867019523] [2023-11-06 21:59:29,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867019523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:29,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664835949] [2023-11-06 21:59:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:29,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:29,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:29,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:29,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:59:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:29,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:59:29,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 21:59:29,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:29,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664835949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:29,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:29,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-06 21:59:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104993590] [2023-11-06 21:59:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:29,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:59:29,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:59:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:59:29,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-06 21:59:29,610 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) [2023-11-06 21:59:29,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:29,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-06 21:59:29,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:30,460 INFO L124 PetriNetUnfolderBase]: 2444/4439 cut-off events. [2023-11-06 21:59:30,460 INFO L125 PetriNetUnfolderBase]: For 7059/7059 co-relation queries the response was YES. [2023-11-06 21:59:30,480 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. [2023-11-06 21:59:30,500 INFO L140 encePairwiseOnDemand]: 355/366 looper letters, 107 selfloop transitions, 39 changer transitions 0/148 dead transitions. [2023-11-06 21:59:30,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 148 transitions, 1298 flow [2023-11-06 21:59:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1231 transitions. [2023-11-06 21:59:30,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804839968774395 [2023-11-06 21:59:30,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1231 transitions. [2023-11-06 21:59:30,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1231 transitions. [2023-11-06 21:59:30,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:30,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1231 transitions. [2023-11-06 21:59:30,513 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) [2023-11-06 21:59:30,519 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) [2023-11-06 21:59:30,521 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) [2023-11-06 21:59:30,521 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 547 flow. Second operand 7 states and 1231 transitions. [2023-11-06 21:59:30,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 148 transitions, 1298 flow [2023-11-06 21:59:30,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 148 transitions, 1252 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-06 21:59:30,547 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 946 flow [2023-11-06 21:59:30,547 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} [2023-11-06 21:59:30,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-11-06 21:59:30,549 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 946 flow [2023-11-06 21:59:30,559 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) [2023-11-06 21:59:30,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:30,560 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-06 21:59:30,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:30,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 21:59:30,767 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:30,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2062291422, now seen corresponding path program 1 times [2023-11-06 21:59:30,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:30,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120041202] [2023-11-06 21:59:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:30,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:31,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:31,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120041202] [2023-11-06 21:59:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120041202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200471031] [2023-11-06 21:59:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:31,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:31,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:31,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:31,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:59:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:31,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:59:31,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:31,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200471031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:31,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:31,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 21:59:31,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215411613] [2023-11-06 21:59:31,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:31,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 21:59:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 21:59:31,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:59:31,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 366 [2023-11-06 21:59:31,669 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) [2023-11-06 21:59:31,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:31,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 366 [2023-11-06 21:59:31,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:33,629 INFO L124 PetriNetUnfolderBase]: 4216/7659 cut-off events. [2023-11-06 21:59:33,630 INFO L125 PetriNetUnfolderBase]: For 17566/17566 co-relation queries the response was YES. [2023-11-06 21:59:33,672 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. [2023-11-06 21:59:33,709 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 279 selfloop transitions, 55 changer transitions 3/339 dead transitions. [2023-11-06 21:59:33,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 339 transitions, 2781 flow [2023-11-06 21:59:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:59:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 21:59:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3444 transitions. [2023-11-06 21:59:33,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49525452976704054 [2023-11-06 21:59:33,726 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3444 transitions. [2023-11-06 21:59:33,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3444 transitions. [2023-11-06 21:59:33,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:33,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3444 transitions. [2023-11-06 21:59:33,740 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) [2023-11-06 21:59:33,755 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) [2023-11-06 21:59:33,758 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) [2023-11-06 21:59:33,758 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 946 flow. Second operand 19 states and 3444 transitions. [2023-11-06 21:59:33,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 339 transitions, 2781 flow [2023-11-06 21:59:33,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 339 transitions, 2735 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-06 21:59:33,832 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 1292 flow [2023-11-06 21:59:33,833 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} [2023-11-06 21:59:33,834 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-11-06 21:59:33,834 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 1292 flow [2023-11-06 21:59:33,835 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) [2023-11-06 21:59:33,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:33,835 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] [2023-11-06 21:59:33,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:34,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:34,042 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:34,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash -528047823, now seen corresponding path program 1 times [2023-11-06 21:59:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:34,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550275608] [2023-11-06 21:59:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:34,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550275608] [2023-11-06 21:59:34,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550275608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:34,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572638229] [2023-11-06 21:59:34,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:34,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:34,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:34,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:59:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:34,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:59:34,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:34,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:34,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572638229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:34,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:34,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-06 21:59:34,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698725257] [2023-11-06 21:59:34,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:34,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:59:34,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:59:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:59:34,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 366 [2023-11-06 21:59:34,976 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) [2023-11-06 21:59:34,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:34,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 366 [2023-11-06 21:59:34,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:36,820 INFO L124 PetriNetUnfolderBase]: 4806/8725 cut-off events. [2023-11-06 21:59:36,820 INFO L125 PetriNetUnfolderBase]: For 23961/23961 co-relation queries the response was YES. [2023-11-06 21:59:36,859 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. [2023-11-06 21:59:36,889 INFO L140 encePairwiseOnDemand]: 354/366 looper letters, 164 selfloop transitions, 101 changer transitions 3/270 dead transitions. [2023-11-06 21:59:36,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 270 transitions, 2652 flow [2023-11-06 21:59:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:59:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 21:59:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2886 transitions. [2023-11-06 21:59:36,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46383799421407906 [2023-11-06 21:59:36,901 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2886 transitions. [2023-11-06 21:59:36,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2886 transitions. [2023-11-06 21:59:36,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:36,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2886 transitions. [2023-11-06 21:59:36,911 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) [2023-11-06 21:59:36,922 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) [2023-11-06 21:59:36,924 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) [2023-11-06 21:59:36,925 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 1292 flow. Second operand 17 states and 2886 transitions. [2023-11-06 21:59:36,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 270 transitions, 2652 flow [2023-11-06 21:59:37,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 270 transitions, 2477 flow, removed 64 selfloop flow, removed 6 redundant places. [2023-11-06 21:59:37,026 INFO L231 Difference]: Finished difference. Result has 125 places, 136 transitions, 1711 flow [2023-11-06 21:59:37,026 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} [2023-11-06 21:59:37,027 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2023-11-06 21:59:37,027 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 136 transitions, 1711 flow [2023-11-06 21:59:37,028 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) [2023-11-06 21:59:37,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:37,028 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] [2023-11-06 21:59:37,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:37,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:37,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:37,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1813940984, now seen corresponding path program 1 times [2023-11-06 21:59:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:37,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527523329] [2023-11-06 21:59:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:37,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:37,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527523329] [2023-11-06 21:59:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527523329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350517529] [2023-11-06 21:59:37,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:37,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:37,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:37,469 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:37,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:59:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:37,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:59:37,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:37,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:37,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350517529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:37,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:37,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-11-06 21:59:37,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623110770] [2023-11-06 21:59:37,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:37,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:59:37,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:37,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:59:37,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:59:37,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 366 [2023-11-06 21:59:37,984 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) [2023-11-06 21:59:37,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:37,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 366 [2023-11-06 21:59:37,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:40,042 INFO L124 PetriNetUnfolderBase]: 5127/9338 cut-off events. [2023-11-06 21:59:40,042 INFO L125 PetriNetUnfolderBase]: For 23629/23629 co-relation queries the response was YES. [2023-11-06 21:59:40,110 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. [2023-11-06 21:59:40,142 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 162 selfloop transitions, 112 changer transitions 3/279 dead transitions. [2023-11-06 21:59:40,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 279 transitions, 2920 flow [2023-11-06 21:59:40,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:59:40,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 21:59:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3227 transitions. [2023-11-06 21:59:40,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46404946793212537 [2023-11-06 21:59:40,152 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3227 transitions. [2023-11-06 21:59:40,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3227 transitions. [2023-11-06 21:59:40,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:40,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3227 transitions. [2023-11-06 21:59:40,160 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) [2023-11-06 21:59:40,172 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) [2023-11-06 21:59:40,175 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) [2023-11-06 21:59:40,175 INFO L175 Difference]: Start difference. First operand has 125 places, 136 transitions, 1711 flow. Second operand 19 states and 3227 transitions. [2023-11-06 21:59:40,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 279 transitions, 2920 flow [2023-11-06 21:59:40,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 279 transitions, 2756 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:40,316 INFO L231 Difference]: Finished difference. Result has 134 places, 151 transitions, 1959 flow [2023-11-06 21:59:40,316 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} [2023-11-06 21:59:40,317 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2023-11-06 21:59:40,317 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 151 transitions, 1959 flow [2023-11-06 21:59:40,318 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) [2023-11-06 21:59:40,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:40,318 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] [2023-11-06 21:59:40,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:40,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 21:59:40,525 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:40,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1360943057, now seen corresponding path program 2 times [2023-11-06 21:59:40,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703982293] [2023-11-06 21:59:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:59:40,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:40,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703982293] [2023-11-06 21:59:40,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703982293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603849418] [2023-11-06 21:59:40,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:59:40,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:40,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:40,857 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:40,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:59:41,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:59:41,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:41,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:59:41,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:59:41,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:59:41,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603849418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:41,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:41,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-11-06 21:59:41,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984576652] [2023-11-06 21:59:41,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:41,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:59:41,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:59:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:59:41,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-06 21:59:41,472 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) [2023-11-06 21:59:41,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:41,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-06 21:59:41,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:43,955 INFO L124 PetriNetUnfolderBase]: 6983/12682 cut-off events. [2023-11-06 21:59:43,955 INFO L125 PetriNetUnfolderBase]: For 35352/35352 co-relation queries the response was YES. [2023-11-06 21:59:44,014 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. [2023-11-06 21:59:44,044 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 262 selfloop transitions, 147 changer transitions 3/414 dead transitions. [2023-11-06 21:59:44,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 414 transitions, 4405 flow [2023-11-06 21:59:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 21:59:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 21:59:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3473 transitions. [2023-11-06 21:59:44,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744535519125683 [2023-11-06 21:59:44,051 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3473 transitions. [2023-11-06 21:59:44,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3473 transitions. [2023-11-06 21:59:44,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:44,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3473 transitions. [2023-11-06 21:59:44,058 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) [2023-11-06 21:59:44,068 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) [2023-11-06 21:59:44,071 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) [2023-11-06 21:59:44,071 INFO L175 Difference]: Start difference. First operand has 134 places, 151 transitions, 1959 flow. Second operand 20 states and 3473 transitions. [2023-11-06 21:59:44,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 414 transitions, 4405 flow [2023-11-06 21:59:44,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 414 transitions, 3653 flow, removed 146 selfloop flow, removed 17 redundant places. [2023-11-06 21:59:44,245 INFO L231 Difference]: Finished difference. Result has 142 places, 207 transitions, 2536 flow [2023-11-06 21:59:44,246 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} [2023-11-06 21:59:44,246 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2023-11-06 21:59:44,246 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 207 transitions, 2536 flow [2023-11-06 21:59:44,248 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) [2023-11-06 21:59:44,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:44,248 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] [2023-11-06 21:59:44,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:44,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:44,465 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:44,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 119065212, now seen corresponding path program 1 times [2023-11-06 21:59:44,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:44,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818940623] [2023-11-06 21:59:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:44,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:44,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818940623] [2023-11-06 21:59:44,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818940623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:44,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545498508] [2023-11-06 21:59:44,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:44,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:44,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:44,753 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:44,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:59:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:44,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:59:44,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:45,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545498508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:45,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:45,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-06 21:59:45,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173194533] [2023-11-06 21:59:45,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:45,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 21:59:45,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 21:59:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-06 21:59:45,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-06 21:59:45,440 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) [2023-11-06 21:59:45,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:45,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-06 21:59:45,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:48,968 INFO L124 PetriNetUnfolderBase]: 9478/17191 cut-off events. [2023-11-06 21:59:48,968 INFO L125 PetriNetUnfolderBase]: For 38600/38600 co-relation queries the response was YES. [2023-11-06 21:59:49,160 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. [2023-11-06 21:59:49,214 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 279 selfloop transitions, 249 changer transitions 3/533 dead transitions. [2023-11-06 21:59:49,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 533 transitions, 5946 flow [2023-11-06 21:59:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 21:59:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-06 21:59:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4316 transitions. [2023-11-06 21:59:49,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47169398907103827 [2023-11-06 21:59:49,222 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4316 transitions. [2023-11-06 21:59:49,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4316 transitions. [2023-11-06 21:59:49,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:49,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4316 transitions. [2023-11-06 21:59:49,233 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) [2023-11-06 21:59:49,247 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) [2023-11-06 21:59:49,250 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) [2023-11-06 21:59:49,250 INFO L175 Difference]: Start difference. First operand has 142 places, 207 transitions, 2536 flow. Second operand 25 states and 4316 transitions. [2023-11-06 21:59:49,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 533 transitions, 5946 flow [2023-11-06 21:59:49,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 533 transitions, 5615 flow, removed 50 selfloop flow, removed 11 redundant places. [2023-11-06 21:59:49,562 INFO L231 Difference]: Finished difference. Result has 161 places, 319 transitions, 4438 flow [2023-11-06 21:59:49,563 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} [2023-11-06 21:59:49,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2023-11-06 21:59:49,564 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 319 transitions, 4438 flow [2023-11-06 21:59:49,565 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) [2023-11-06 21:59:49,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:49,566 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] [2023-11-06 21:59:49,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:49,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 21:59:49,772 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:49,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash 522954869, now seen corresponding path program 3 times [2023-11-06 21:59:49,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:49,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957322992] [2023-11-06 21:59:49,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:49,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 21:59:50,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:50,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957322992] [2023-11-06 21:59:50,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957322992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:50,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621364616] [2023-11-06 21:59:50,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:59:50,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:50,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:50,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:59:50,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 21:59:50,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:50,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:59:50,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 21:59:50,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:59:50,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621364616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:50,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:59:50,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 15 [2023-11-06 21:59:50,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391350826] [2023-11-06 21:59:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:50,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:59:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:50,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:59:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:59:50,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 366 [2023-11-06 21:59:50,512 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) [2023-11-06 21:59:50,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:50,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 366 [2023-11-06 21:59:50,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:54,152 INFO L124 PetriNetUnfolderBase]: 9448/17175 cut-off events. [2023-11-06 21:59:54,152 INFO L125 PetriNetUnfolderBase]: For 42976/42976 co-relation queries the response was YES. [2023-11-06 21:59:54,257 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. [2023-11-06 21:59:54,315 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 114 selfloop transitions, 232 changer transitions 0/348 dead transitions. [2023-11-06 21:59:54,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 348 transitions, 5151 flow [2023-11-06 21:59:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1190 transitions. [2023-11-06 21:59:54,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644808743169399 [2023-11-06 21:59:54,319 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1190 transitions. [2023-11-06 21:59:54,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1190 transitions. [2023-11-06 21:59:54,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:54,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1190 transitions. [2023-11-06 21:59:54,436 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) [2023-11-06 21:59:54,439 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) [2023-11-06 21:59:54,439 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) [2023-11-06 21:59:54,439 INFO L175 Difference]: Start difference. First operand has 161 places, 319 transitions, 4438 flow. Second operand 7 states and 1190 transitions. [2023-11-06 21:59:54,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 348 transitions, 5151 flow [2023-11-06 21:59:54,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 348 transitions, 4880 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-11-06 21:59:54,725 INFO L231 Difference]: Finished difference. Result has 156 places, 312 transitions, 4515 flow [2023-11-06 21:59:54,726 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} [2023-11-06 21:59:54,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2023-11-06 21:59:54,727 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 312 transitions, 4515 flow [2023-11-06 21:59:54,727 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) [2023-11-06 21:59:54,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:54,727 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] [2023-11-06 21:59:54,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:54,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:54,937 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 21:59:54,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2056966375, now seen corresponding path program 4 times [2023-11-06 21:59:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62429996] [2023-11-06 21:59:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:59:55,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:55,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62429996] [2023-11-06 21:59:55,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62429996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:55,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856101669] [2023-11-06 21:59:55,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:59:55,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:55,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:55,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:55,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:59:55,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:59:55,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:55,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 21:59:55,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:59:55,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 21:59:55,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856101669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:59:55,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:59:55,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-06 21:59:55,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75104949] [2023-11-06 21:59:55,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:59:55,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 21:59:55,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:55,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 21:59:55,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-11-06 21:59:56,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-06 21:59:56,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 312 transitions, 4515 flow. Second operand has 24 states, 24 states have (on average 165.75) internal successors, (3978), 24 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:56,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:56,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-06 21:59:56,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:02,992 INFO L124 PetriNetUnfolderBase]: 16198/29379 cut-off events. [2023-11-06 22:00:02,992 INFO L125 PetriNetUnfolderBase]: For 94084/94084 co-relation queries the response was YES. [2023-11-06 22:00:03,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105880 conditions, 29379 events. 16198/29379 cut-off events. For 94084/94084 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 199006 event pairs, 3177 based on Foata normal form. 294/29673 useless extension candidates. Maximal degree in co-relation 105468. Up to 5397 conditions per place. [2023-11-06 22:00:03,267 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 383 selfloop transitions, 495 changer transitions 3/883 dead transitions. [2023-11-06 22:00:03,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 883 transitions, 11496 flow [2023-11-06 22:00:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-06 22:00:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-06 22:00:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5360 transitions. [2023-11-06 22:00:03,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.472413185263529 [2023-11-06 22:00:03,275 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5360 transitions. [2023-11-06 22:00:03,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5360 transitions. [2023-11-06 22:00:03,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:03,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5360 transitions. [2023-11-06 22:00:03,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 172.90322580645162) internal successors, (5360), 31 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:03,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 366.0) internal successors, (11712), 32 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:03,295 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 366.0) internal successors, (11712), 32 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:03,295 INFO L175 Difference]: Start difference. First operand has 156 places, 312 transitions, 4515 flow. Second operand 31 states and 5360 transitions. [2023-11-06 22:00:03,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 883 transitions, 11496 flow [2023-11-06 22:00:03,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 883 transitions, 10846 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:00:03,715 INFO L231 Difference]: Finished difference. Result has 186 places, 563 transitions, 9252 flow [2023-11-06 22:00:03,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=4161, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=9252, PETRI_PLACES=186, PETRI_TRANSITIONS=563} [2023-11-06 22:00:03,716 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2023-11-06 22:00:03,716 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 563 transitions, 9252 flow [2023-11-06 22:00:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 165.75) internal successors, (3978), 24 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:03,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:03,717 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:03,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:03,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-06 22:00:03,923 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:00:03,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:03,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1988021663, now seen corresponding path program 5 times [2023-11-06 22:00:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:03,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401388826] [2023-11-06 22:00:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:03,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:00:04,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:04,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401388826] [2023-11-06 22:00:04,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401388826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:00:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436021555] [2023-11-06 22:00:04,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:00:04,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:00:04,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:04,682 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:00:04,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:00:05,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-06 22:00:05,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:00:05,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:00:05,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:00:05,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:00:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:00:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436021555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:00:05,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:00:05,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2023-11-06 22:00:05,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596651511] [2023-11-06 22:00:05,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:00:05,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:00:05,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:05,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:00:05,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:00:05,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-06 22:00:05,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 563 transitions, 9252 flow. Second operand has 32 states, 32 states have (on average 165.5625) internal successors, (5298), 32 states have internal predecessors, (5298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:05,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:05,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-06 22:00:05,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:17,969 INFO L124 PetriNetUnfolderBase]: 22826/41389 cut-off events. [2023-11-06 22:00:17,969 INFO L125 PetriNetUnfolderBase]: For 171178/171178 co-relation queries the response was YES. [2023-11-06 22:00:18,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153507 conditions, 41389 events. 22826/41389 cut-off events. For 171178/171178 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 289290 event pairs, 3877 based on Foata normal form. 396/41785 useless extension candidates. Maximal degree in co-relation 153090. Up to 7709 conditions per place. [2023-11-06 22:00:18,425 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 507 selfloop transitions, 729 changer transitions 3/1241 dead transitions. [2023-11-06 22:00:18,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 1241 transitions, 17462 flow [2023-11-06 22:00:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-06 22:00:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-11-06 22:00:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 7263 transitions. [2023-11-06 22:00:18,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724824355971897 [2023-11-06 22:00:18,435 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 7263 transitions. [2023-11-06 22:00:18,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 7263 transitions. [2023-11-06 22:00:18,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:18,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 7263 transitions. [2023-11-06 22:00:18,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 172.92857142857142) internal successors, (7263), 42 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:18,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 366.0) internal successors, (15738), 43 states have internal predecessors, (15738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:18,650 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 366.0) internal successors, (15738), 43 states have internal predecessors, (15738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:18,651 INFO L175 Difference]: Start difference. First operand has 186 places, 563 transitions, 9252 flow. Second operand 42 states and 7263 transitions. [2023-11-06 22:00:18,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 1241 transitions, 17462 flow [2023-11-06 22:00:19,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1241 transitions, 17105 flow, removed 82 selfloop flow, removed 8 redundant places. [2023-11-06 22:00:19,780 INFO L231 Difference]: Finished difference. Result has 227 places, 797 transitions, 14952 flow [2023-11-06 22:00:19,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=8819, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=14952, PETRI_PLACES=227, PETRI_TRANSITIONS=797} [2023-11-06 22:00:19,781 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2023-11-06 22:00:19,781 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 797 transitions, 14952 flow [2023-11-06 22:00:19,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 165.5625) internal successors, (5298), 32 states have internal predecessors, (5298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:19,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:19,782 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:19,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:19,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:00:19,989 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:00:19,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1807397933, now seen corresponding path program 1 times [2023-11-06 22:00:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:19,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890389422] [2023-11-06 22:00:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:00:20,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:20,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890389422] [2023-11-06 22:00:20,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890389422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:00:20,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724799742] [2023-11-06 22:00:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:20,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:00:20,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:20,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:00:20,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:00:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:20,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:00:20,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:00:20,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:00:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:00:21,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724799742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:00:21,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:00:21,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2023-11-06 22:00:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623832721] [2023-11-06 22:00:21,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:00:21,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:00:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:00:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:00:21,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-06 22:00:21,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 797 transitions, 14952 flow. Second operand has 26 states, 26 states have (on average 166.07692307692307) internal successors, (4318), 26 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:21,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:21,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-06 22:00:21,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:45,965 INFO L124 PetriNetUnfolderBase]: 37311/67603 cut-off events. [2023-11-06 22:00:45,965 INFO L125 PetriNetUnfolderBase]: For 359596/359596 co-relation queries the response was YES. [2023-11-06 22:00:46,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262252 conditions, 67603 events. 37311/67603 cut-off events. For 359596/359596 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 519377 event pairs, 6613 based on Foata normal form. 454/68057 useless extension candidates. Maximal degree in co-relation 261827. Up to 12521 conditions per place. [2023-11-06 22:00:46,762 INFO L140 encePairwiseOnDemand]: 357/366 looper letters, 530 selfloop transitions, 1237 changer transitions 3/1772 dead transitions. [2023-11-06 22:00:46,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1772 transitions, 32343 flow [2023-11-06 22:00:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-06 22:00:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-06 22:00:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5390 transitions. [2023-11-06 22:00:46,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475057288912392 [2023-11-06 22:00:46,771 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5390 transitions. [2023-11-06 22:00:46,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5390 transitions. [2023-11-06 22:00:46,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:46,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5390 transitions. [2023-11-06 22:00:46,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 173.8709677419355) internal successors, (5390), 31 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:46,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 366.0) internal successors, (11712), 32 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:46,791 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 366.0) internal successors, (11712), 32 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:46,791 INFO L175 Difference]: Start difference. First operand has 227 places, 797 transitions, 14952 flow. Second operand 31 states and 5390 transitions. [2023-11-06 22:00:46,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1772 transitions, 32343 flow [2023-11-06 22:00:51,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1772 transitions, 31430 flow, removed 142 selfloop flow, removed 14 redundant places. [2023-11-06 22:00:51,124 INFO L231 Difference]: Finished difference. Result has 257 places, 1423 transitions, 30873 flow [2023-11-06 22:00:51,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=14315, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=667, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=30873, PETRI_PLACES=257, PETRI_TRANSITIONS=1423} [2023-11-06 22:00:51,125 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2023-11-06 22:00:51,125 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 1423 transitions, 30873 flow [2023-11-06 22:00:51,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 166.07692307692307) internal successors, (4318), 26 states have internal predecessors, (4318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:51,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:51,126 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:51,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:00:51,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:00:51,327 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-06 22:00:51,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1330025892, now seen corresponding path program 2 times [2023-11-06 22:00:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:51,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717056833] [2023-11-06 22:00:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:51,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:00:51,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:51,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717056833] [2023-11-06 22:00:51,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717056833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:00:51,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203025308] [2023-11-06 22:00:51,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:00:51,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:00:51,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:51,843 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:00:51,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a3ee322-6ef1-409c-8739-044db7d36c04/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:00:52,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:00:52,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:00:52,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:00:52,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:00:52,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:00:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:00:52,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203025308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:00:52,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:00:52,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2023-11-06 22:00:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638328160] [2023-11-06 22:00:52,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:00:52,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:00:52,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:52,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:00:52,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:00:52,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 366 [2023-11-06 22:00:52,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 1423 transitions, 30873 flow. Second operand has 24 states, 24 states have (on average 166.58333333333334) internal successors, (3998), 24 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:52,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:52,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 366 [2023-11-06 22:00:52,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand