./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:50,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:50,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:54:50,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:50,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:50,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:50,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:50,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:50,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:50,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:50,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:50,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:50,534 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:50,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:50,535 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:54:50,536 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:50,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:50,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:50,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:50,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:54:50,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:50,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:54:50,541 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:54:50,542 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:50,542 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:50,543 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:54:50,543 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:50,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:50,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:50,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:50,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:50,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:50,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:50,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:54:50,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:50,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:50,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:50,550 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:54:50,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:50,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:50,552 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:50,553 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_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-19 07:54:50,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:50,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:50,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:50,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:50,892 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:50,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/queue.i [2023-11-19 07:54:54,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:54,628 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:54,629 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/sv-benchmarks/c/pthread/queue.i [2023-11-19 07:54:54,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/data/ae607ec4c/bf300e9ce70e478b89bfedf67c3bdd78/FLAGf7966d012 [2023-11-19 07:54:54,696 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/data/ae607ec4c/bf300e9ce70e478b89bfedf67c3bdd78 [2023-11-19 07:54:54,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:54,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:54,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:54,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:54,711 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:54,712 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:54" (1/1) ... [2023-11-19 07:54:54,714 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75eb15e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:54, skipping insertion in model container [2023-11-19 07:54:54,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:54" (1/1) ... [2023-11-19 07:54:54,781 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:55,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:55,526 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:55,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:55,751 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:55,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55 WrapperNode [2023-11-19 07:54:55,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:55,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:55,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:55,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:55,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,886 INFO L138 Inliner]: procedures = 274, calls = 71, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 278 [2023-11-19 07:54:55,888 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:55,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:55,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:55,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:55,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:55,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:55,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:55,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:55,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (1/1) ... [2023-11-19 07:54:55,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:55,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:55,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:56,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:54:56,051 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:54:56,051 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:54:56,051 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:54:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:54:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:54:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:56,055 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:54:56,262 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:56,264 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:56,778 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:56,793 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:56,794 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:54:56,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:56 BoogieIcfgContainer [2023-11-19 07:54:56,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:56,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:56,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:56,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:56,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:54" (1/3) ... [2023-11-19 07:54:56,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ec61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:56, skipping insertion in model container [2023-11-19 07:54:56,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:55" (2/3) ... [2023-11-19 07:54:56,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ec61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:56, skipping insertion in model container [2023-11-19 07:54:56,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:56" (3/3) ... [2023-11-19 07:54:56,810 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-19 07:54:56,819 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:54:56,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:56,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 07:54:56,831 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:54:56,998 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:54:57,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 326 transitions, 666 flow [2023-11-19 07:54:57,241 INFO L124 PetriNetUnfolderBase]: 18/324 cut-off events. [2023-11-19 07:54:57,241 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:54:57,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 324 events. 18/324 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 529 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-19 07:54:57,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 326 transitions, 666 flow [2023-11-19 07:54:57,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 305 transitions, 619 flow [2023-11-19 07:54:57,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:57,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 305 transitions, 619 flow [2023-11-19 07:54:57,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 305 transitions, 619 flow [2023-11-19 07:54:57,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 305 transitions, 619 flow [2023-11-19 07:54:57,375 INFO L124 PetriNetUnfolderBase]: 16/305 cut-off events. [2023-11-19 07:54:57,375 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:54:57,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 305 events. 16/305 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 469 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-19 07:54:57,396 INFO L119 LiptonReduction]: Number of co-enabled transitions 25932 [2023-11-19 07:55:09,380 INFO L134 LiptonReduction]: Checked pairs total: 57279 [2023-11-19 07:55:09,380 INFO L136 LiptonReduction]: Total number of compositions: 294 [2023-11-19 07:55:09,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:09,404 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5dc927b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:09,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-19 07:55:09,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:55:09,410 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-19 07:55:09,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:55:09,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:09,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:55:09,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:09,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1061848152, now seen corresponding path program 1 times [2023-11-19 07:55:09,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:09,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27197105] [2023-11-19 07:55:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:09,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:11,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:11,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27197105] [2023-11-19 07:55:11,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27197105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:11,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:11,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:11,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820183364] [2023-11-19 07:55:11,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:11,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:55:11,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:55:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:12,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 620 [2023-11-19 07:55:12,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:12,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:12,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 620 [2023-11-19 07:55:12,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:13,989 INFO L124 PetriNetUnfolderBase]: 2897/4840 cut-off events. [2023-11-19 07:55:13,990 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-19 07:55:14,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9544 conditions, 4840 events. 2897/4840 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 25756 event pairs, 2292 based on Foata normal form. 0/3436 useless extension candidates. Maximal degree in co-relation 9332. Up to 4595 conditions per place. [2023-11-19 07:55:14,049 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 70 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-11-19 07:55:14,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 337 flow [2023-11-19 07:55:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:55:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1762 transitions. [2023-11-19 07:55:14,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4736559139784946 [2023-11-19 07:55:14,091 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1762 transitions. [2023-11-19 07:55:14,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1762 transitions. [2023-11-19 07:55:14,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:14,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1762 transitions. [2023-11-19 07:55:14,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.6666666666667) internal successors, (1762), 6 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:14,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:14,143 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:14,146 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 163 flow. Second operand 6 states and 1762 transitions. [2023-11-19 07:55:14,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 337 flow [2023-11-19 07:55:14,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:55:14,171 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 216 flow [2023-11-19 07:55:14,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-11-19 07:55:14,178 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-11-19 07:55:14,179 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 216 flow [2023-11-19 07:55:14,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:14,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:14,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:14,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:55:14,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:14,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1442448104, now seen corresponding path program 1 times [2023-11-19 07:55:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529552995] [2023-11-19 07:55:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:14,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:14,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529552995] [2023-11-19 07:55:14,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529552995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:14,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:14,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:14,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131219609] [2023-11-19 07:55:14,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:14,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:14,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:14,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:15,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 620 [2023-11-19 07:55:15,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:15,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:15,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 620 [2023-11-19 07:55:15,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:16,859 INFO L124 PetriNetUnfolderBase]: 3086/5147 cut-off events. [2023-11-19 07:55:16,859 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2023-11-19 07:55:16,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10542 conditions, 5147 events. 3086/5147 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28249 event pairs, 658 based on Foata normal form. 27/3732 useless extension candidates. Maximal degree in co-relation 10100. Up to 4599 conditions per place. [2023-11-19 07:55:16,915 INFO L140 encePairwiseOnDemand]: 612/620 looper letters, 134 selfloop transitions, 13 changer transitions 0/153 dead transitions. [2023-11-19 07:55:16,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 153 transitions, 664 flow [2023-11-19 07:55:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:55:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1801 transitions. [2023-11-19 07:55:16,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48413978494623655 [2023-11-19 07:55:16,925 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1801 transitions. [2023-11-19 07:55:16,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1801 transitions. [2023-11-19 07:55:16,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:16,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1801 transitions. [2023-11-19 07:55:16,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 300.1666666666667) internal successors, (1801), 6 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,950 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 216 flow. Second operand 6 states and 1801 transitions. [2023-11-19 07:55:16,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 153 transitions, 664 flow [2023-11-19 07:55:16,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 153 transitions, 664 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:55:16,966 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 299 flow [2023-11-19 07:55:16,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2023-11-19 07:55:16,968 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2023-11-19 07:55:16,968 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 299 flow [2023-11-19 07:55:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:16,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:16,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:16,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:55:16,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:16,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1088783718, now seen corresponding path program 1 times [2023-11-19 07:55:16,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:16,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232839900] [2023-11-19 07:55:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:17,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:17,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232839900] [2023-11-19 07:55:17,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232839900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:17,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:17,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488811224] [2023-11-19 07:55:17,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:17,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:55:17,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:55:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:18,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 620 [2023-11-19 07:55:18,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:18,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:18,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 620 [2023-11-19 07:55:18,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:19,976 INFO L124 PetriNetUnfolderBase]: 3080/5142 cut-off events. [2023-11-19 07:55:19,977 INFO L125 PetriNetUnfolderBase]: For 1179/1179 co-relation queries the response was YES. [2023-11-19 07:55:19,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 5142 events. 3080/5142 cut-off events. For 1179/1179 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28021 event pairs, 2459 based on Foata normal form. 0/3701 useless extension candidates. Maximal degree in co-relation 10884. Up to 4902 conditions per place. [2023-11-19 07:55:20,044 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 81 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2023-11-19 07:55:20,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 493 flow [2023-11-19 07:55:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:55:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2023-11-19 07:55:20,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47446236559139787 [2023-11-19 07:55:20,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1765 transitions. [2023-11-19 07:55:20,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1765 transitions. [2023-11-19 07:55:20,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:20,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1765 transitions. [2023-11-19 07:55:20,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.1666666666667) internal successors, (1765), 6 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:20,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:20,079 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:20,079 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 299 flow. Second operand 6 states and 1765 transitions. [2023-11-19 07:55:20,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 493 flow [2023-11-19 07:55:20,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 481 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-19 07:55:20,096 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 327 flow [2023-11-19 07:55:20,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2023-11-19 07:55:20,098 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2023-11-19 07:55:20,099 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 327 flow [2023-11-19 07:55:20,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.5) internal successors, (1689), 6 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:20,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:20,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:20,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:55:20,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:20,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:20,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1362577132, now seen corresponding path program 1 times [2023-11-19 07:55:20,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:20,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683588313] [2023-11-19 07:55:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683588313] [2023-11-19 07:55:20,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683588313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:20,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:20,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:20,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489249609] [2023-11-19 07:55:20,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:20,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:20,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:20,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:20,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 620 [2023-11-19 07:55:20,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:20,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:20,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 620 [2023-11-19 07:55:20,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:21,557 INFO L124 PetriNetUnfolderBase]: 5243/8737 cut-off events. [2023-11-19 07:55:21,557 INFO L125 PetriNetUnfolderBase]: For 1588/1588 co-relation queries the response was YES. [2023-11-19 07:55:21,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 8737 events. 5243/8737 cut-off events. For 1588/1588 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 54018 event pairs, 2365 based on Foata normal form. 0/6548 useless extension candidates. Maximal degree in co-relation 17814. Up to 4830 conditions per place. [2023-11-19 07:55:21,645 INFO L140 encePairwiseOnDemand]: 615/620 looper letters, 154 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-11-19 07:55:21,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 163 transitions, 835 flow [2023-11-19 07:55:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1051 transitions. [2023-11-19 07:55:21,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650537634408602 [2023-11-19 07:55:21,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1051 transitions. [2023-11-19 07:55:21,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1051 transitions. [2023-11-19 07:55:21,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:21,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1051 transitions. [2023-11-19 07:55:21,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.3333333333333) internal successors, (1051), 3 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:21,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:21,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:21,667 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 327 flow. Second operand 3 states and 1051 transitions. [2023-11-19 07:55:21,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 163 transitions, 835 flow [2023-11-19 07:55:21,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 163 transitions, 819 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:55:21,681 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 327 flow [2023-11-19 07:55:21,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2023-11-19 07:55:21,683 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-11-19 07:55:21,683 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 327 flow [2023-11-19 07:55:21,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:21,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:21,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:21,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:55:21,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:21,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1982089072, now seen corresponding path program 1 times [2023-11-19 07:55:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482346206] [2023-11-19 07:55:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:21,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:22,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482346206] [2023-11-19 07:55:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482346206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:22,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:22,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:22,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801753172] [2023-11-19 07:55:22,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:22,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:22,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:22,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:22,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:24,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 620 [2023-11-19 07:55:24,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 277.42857142857144) internal successors, (1942), 7 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:24,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:24,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 620 [2023-11-19 07:55:24,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:26,388 INFO L124 PetriNetUnfolderBase]: 5714/9550 cut-off events. [2023-11-19 07:55:26,388 INFO L125 PetriNetUnfolderBase]: For 1862/1862 co-relation queries the response was YES. [2023-11-19 07:55:26,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21283 conditions, 9550 events. 5714/9550 cut-off events. For 1862/1862 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 58565 event pairs, 1078 based on Foata normal form. 90/7455 useless extension candidates. Maximal degree in co-relation 11441. Up to 8185 conditions per place. [2023-11-19 07:55:26,466 INFO L140 encePairwiseOnDemand]: 610/620 looper letters, 143 selfloop transitions, 19 changer transitions 0/168 dead transitions. [2023-11-19 07:55:26,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 168 transitions, 882 flow [2023-11-19 07:55:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:26,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:55:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1806 transitions. [2023-11-19 07:55:26,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854838709677419 [2023-11-19 07:55:26,474 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1806 transitions. [2023-11-19 07:55:26,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1806 transitions. [2023-11-19 07:55:26,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:26,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1806 transitions. [2023-11-19 07:55:26,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 301.0) internal successors, (1806), 6 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:26,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:26,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:26,492 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 327 flow. Second operand 6 states and 1806 transitions. [2023-11-19 07:55:26,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 168 transitions, 882 flow [2023-11-19 07:55:26,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 168 transitions, 872 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:26,527 INFO L231 Difference]: Finished difference. Result has 101 places, 100 transitions, 409 flow [2023-11-19 07:55:26,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=101, PETRI_TRANSITIONS=100} [2023-11-19 07:55:26,530 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2023-11-19 07:55:26,531 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 409 flow [2023-11-19 07:55:26,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.42857142857144) internal successors, (1942), 7 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:26,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:26,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:26,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:55:26,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:26,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash -703590336, now seen corresponding path program 1 times [2023-11-19 07:55:26,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:26,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221221938] [2023-11-19 07:55:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:26,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:26,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:26,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221221938] [2023-11-19 07:55:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221221938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:26,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508662115] [2023-11-19 07:55:26,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:26,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:26,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:26,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 620 [2023-11-19 07:55:26,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 100 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:26,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:26,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 620 [2023-11-19 07:55:26,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:28,016 INFO L124 PetriNetUnfolderBase]: 4281/7355 cut-off events. [2023-11-19 07:55:28,016 INFO L125 PetriNetUnfolderBase]: For 1978/1978 co-relation queries the response was YES. [2023-11-19 07:55:28,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16329 conditions, 7355 events. 4281/7355 cut-off events. For 1978/1978 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 41916 event pairs, 2365 based on Foata normal form. 0/5462 useless extension candidates. Maximal degree in co-relation 16088. Up to 4553 conditions per place. [2023-11-19 07:55:28,080 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 113 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2023-11-19 07:55:28,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 122 transitions, 656 flow [2023-11-19 07:55:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:55:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-11-19 07:55:28,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473118279569893 [2023-11-19 07:55:28,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-11-19 07:55:28,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-11-19 07:55:28,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:28,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-11-19 07:55:28,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:28,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:28,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:28,097 INFO L175 Difference]: Start difference. First operand has 101 places, 100 transitions, 409 flow. Second operand 3 states and 1018 transitions. [2023-11-19 07:55:28,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 122 transitions, 656 flow [2023-11-19 07:55:28,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 122 transitions, 604 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-11-19 07:55:28,110 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 298 flow [2023-11-19 07:55:28,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2023-11-19 07:55:28,114 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 15 predicate places. [2023-11-19 07:55:28,114 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 298 flow [2023-11-19 07:55:28,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:28,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:28,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:28,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:55:28,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:28,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash 264340012, now seen corresponding path program 2 times [2023-11-19 07:55:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:28,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321677397] [2023-11-19 07:55:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:28,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:28,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321677397] [2023-11-19 07:55:28,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321677397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:28,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893726440] [2023-11-19 07:55:28,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:29,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 620 [2023-11-19 07:55:29,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 278.42857142857144) internal successors, (1949), 7 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:29,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:29,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 620 [2023-11-19 07:55:29,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:31,257 INFO L124 PetriNetUnfolderBase]: 4594/7777 cut-off events. [2023-11-19 07:55:31,258 INFO L125 PetriNetUnfolderBase]: For 1332/1332 co-relation queries the response was YES. [2023-11-19 07:55:31,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17042 conditions, 7777 events. 4594/7777 cut-off events. For 1332/1332 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 43405 event pairs, 3611 based on Foata normal form. 42/5978 useless extension candidates. Maximal degree in co-relation 16850. Up to 6740 conditions per place. [2023-11-19 07:55:31,304 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 113 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2023-11-19 07:55:31,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 133 transitions, 702 flow [2023-11-19 07:55:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:55:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1778 transitions. [2023-11-19 07:55:31,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47795698924731184 [2023-11-19 07:55:31,312 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1778 transitions. [2023-11-19 07:55:31,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1778 transitions. [2023-11-19 07:55:31,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:31,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1778 transitions. [2023-11-19 07:55:31,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:31,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:31,328 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:31,328 INFO L175 Difference]: Start difference. First operand has 91 places, 88 transitions, 298 flow. Second operand 6 states and 1778 transitions. [2023-11-19 07:55:31,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 133 transitions, 702 flow [2023-11-19 07:55:31,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 133 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:55:31,337 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 343 flow [2023-11-19 07:55:31,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-11-19 07:55:31,338 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-11-19 07:55:31,338 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 343 flow [2023-11-19 07:55:31,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.42857142857144) internal successors, (1949), 7 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:31,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:31,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:31,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:55:31,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:31,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash 609914438, now seen corresponding path program 3 times [2023-11-19 07:55:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46401817] [2023-11-19 07:55:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:32,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:32,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46401817] [2023-11-19 07:55:32,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46401817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:32,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:32,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:32,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616134131] [2023-11-19 07:55:32,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:32,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:32,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:33,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 620 [2023-11-19 07:55:33,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 277.42857142857144) internal successors, (1942), 7 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:33,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:33,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 620 [2023-11-19 07:55:33,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:34,931 INFO L124 PetriNetUnfolderBase]: 4480/7584 cut-off events. [2023-11-19 07:55:34,931 INFO L125 PetriNetUnfolderBase]: For 1688/1688 co-relation queries the response was YES. [2023-11-19 07:55:34,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16684 conditions, 7584 events. 4480/7584 cut-off events. For 1688/1688 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 42136 event pairs, 1473 based on Foata normal form. 42/5818 useless extension candidates. Maximal degree in co-relation 16468. Up to 6319 conditions per place. [2023-11-19 07:55:34,982 INFO L140 encePairwiseOnDemand]: 612/620 looper letters, 106 selfloop transitions, 12 changer transitions 0/125 dead transitions. [2023-11-19 07:55:34,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 125 transitions, 689 flow [2023-11-19 07:55:34,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:55:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1763 transitions. [2023-11-19 07:55:34,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739247311827957 [2023-11-19 07:55:34,990 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1763 transitions. [2023-11-19 07:55:34,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1763 transitions. [2023-11-19 07:55:34,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:34,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1763 transitions. [2023-11-19 07:55:34,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.8333333333333) internal successors, (1763), 6 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:35,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:35,004 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:35,005 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 343 flow. Second operand 6 states and 1763 transitions. [2023-11-19 07:55:35,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 125 transitions, 689 flow [2023-11-19 07:55:35,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 669 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-19 07:55:35,013 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 321 flow [2023-11-19 07:55:35,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2023-11-19 07:55:35,014 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2023-11-19 07:55:35,014 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 321 flow [2023-11-19 07:55:35,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.42857142857144) internal successors, (1942), 7 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:35,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:35,015 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:35,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:55:35,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-19 07:55:35,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash -794516754, now seen corresponding path program 1 times [2023-11-19 07:55:35,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:35,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040488101] [2023-11-19 07:55:35,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:35,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:35,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:35,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040488101] [2023-11-19 07:55:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040488101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:35,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348410143] [2023-11-19 07:55:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:35,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:35,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:35,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:35,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eca47fed-a01d-4a45-bbe6-03e25247337c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:55:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:35,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:35,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:55:35,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348410143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:35,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:55:35,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:55:35,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545019851] [2023-11-19 07:55:35,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:35,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:35,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:35,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:35,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 620 [2023-11-19 07:55:35,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:55:35,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:35,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 620 [2023-11-19 07:55:35,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand