./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:52:08,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:52:08,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:52:08,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:52:08,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:52:08,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:52:08,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:52:08,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:52:08,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:52:08,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:52:08,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:52:08,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:52:08,967 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:52:08,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:52:08,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:52:08,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:52:08,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:52:08,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:52:08,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:52:08,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:52:08,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:52:08,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:52:08,974 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:52:08,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:52:08,975 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:52:08,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:52:08,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:52:08,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:52:08,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:52:08,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:52:08,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:52:08,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:52:08,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:52:08,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:52:08,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:52:08,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:52:08,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:52:08,982 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:52:08,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:52:08,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:52:08,983 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:52:08,984 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_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2023-11-06 22:52:09,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:52:09,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:52:09,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:52:09,375 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:52:09,376 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:52:09,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2023-11-06 22:52:12,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:52:12,878 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:52:12,879 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2023-11-06 22:52:12,909 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/data/da299cee9/9f008c1a7988450ca2acfedd6794951f/FLAG7f40dfdb6 [2023-11-06 22:52:12,926 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/data/da299cee9/9f008c1a7988450ca2acfedd6794951f [2023-11-06 22:52:12,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:52:12,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:52:12,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:52:12,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:52:12,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:52:12,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:52:12" (1/1) ... [2023-11-06 22:52:12,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd6f066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:12, skipping insertion in model container [2023-11-06 22:52:12,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:52:12" (1/1) ... [2023-11-06 22:52:13,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:52:13,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:52:13,602 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:52:13,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:52:13,776 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:52:13,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13 WrapperNode [2023-11-06 22:52:13,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:52:13,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:52:13,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:52:13,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:52:13,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,865 INFO L138 Inliner]: procedures = 270, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2023-11-06 22:52:13,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:52:13,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:52:13,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:52:13,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:52:13,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:52:13,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:52:13,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:52:13,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:52:13,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (1/1) ... [2023-11-06 22:52:13,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:52:13,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:13,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:52:14,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:52:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:52:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:52:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:52:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:52:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:52:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:52:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:52:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:52:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:52:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:52:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:52:14,032 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:52:14,186 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:52:14,188 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:52:14,574 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:52:14,583 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:52:14,583 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-06 22:52:14,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:52:14 BoogieIcfgContainer [2023-11-06 22:52:14,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:52:14,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:52:14,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:52:14,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:52:14,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:52:12" (1/3) ... [2023-11-06 22:52:14,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac72f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:52:14, skipping insertion in model container [2023-11-06 22:52:14,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:13" (2/3) ... [2023-11-06 22:52:14,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac72f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:52:14, skipping insertion in model container [2023-11-06 22:52:14,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:52:14" (3/3) ... [2023-11-06 22:52:14,602 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-11-06 22:52:14,612 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:52:14,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:52:14,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:52:14,622 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:52:14,690 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:52:14,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 150 transitions, 307 flow [2023-11-06 22:52:14,839 INFO L124 PetriNetUnfolderBase]: 25/205 cut-off events. [2023-11-06 22:52:14,840 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:52:14,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 205 events. 25/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 531 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2023-11-06 22:52:14,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 150 transitions, 307 flow [2023-11-06 22:52:14,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 147 transitions, 301 flow [2023-11-06 22:52:14,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:52:14,872 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 147 transitions, 301 flow [2023-11-06 22:52:14,875 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 147 transitions, 301 flow [2023-11-06 22:52:14,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 147 transitions, 301 flow [2023-11-06 22:52:14,920 INFO L124 PetriNetUnfolderBase]: 24/202 cut-off events. [2023-11-06 22:52:14,921 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:52:14,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 202 events. 24/202 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 528 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2023-11-06 22:52:14,927 INFO L119 LiptonReduction]: Number of co-enabled transitions 4680 [2023-11-06 22:52:19,855 INFO L134 LiptonReduction]: Checked pairs total: 7310 [2023-11-06 22:52:19,856 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-06 22:52:19,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:52:19,878 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10ad3954, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:52:19,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-06 22:52:19,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:52:19,883 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-06 22:52:19,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:52:19,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:19,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:52:19,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-06 22:52:19,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash 18713, now seen corresponding path program 1 times [2023-11-06 22:52:19,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:19,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239905610] [2023-11-06 22:52:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:19,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:20,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239905610] [2023-11-06 22:52:20,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239905610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:20,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:20,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:20,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225261760] [2023-11-06 22:52:20,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:20,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:20,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:20,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 300 [2023-11-06 22:52:20,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:20,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 300 [2023-11-06 22:52:20,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:20,433 INFO L124 PetriNetUnfolderBase]: 158/352 cut-off events. [2023-11-06 22:52:20,433 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:52:20,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 352 events. 158/352 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1717 event pairs, 132 based on Foata normal form. 27/241 useless extension candidates. Maximal degree in co-relation 656. Up to 314 conditions per place. [2023-11-06 22:52:20,442 INFO L140 encePairwiseOnDemand]: 288/300 looper letters, 36 selfloop transitions, 2 changer transitions 4/45 dead transitions. [2023-11-06 22:52:20,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 181 flow [2023-11-06 22:52:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-11-06 22:52:20,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48777777777777775 [2023-11-06 22:52:20,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-11-06 22:52:20,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-11-06 22:52:20,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:20,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-11-06 22:52:20,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,494 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 93 flow. Second operand 3 states and 439 transitions. [2023-11-06 22:52:20,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 181 flow [2023-11-06 22:52:20,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 181 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:52:20,500 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 77 flow [2023-11-06 22:52:20,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-11-06 22:52:20,506 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-11-06 22:52:20,506 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 77 flow [2023-11-06 22:52:20,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:20,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:52:20,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:52:20,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-06 22:52:20,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:20,509 INFO L85 PathProgramCache]: Analyzing trace with hash 18715, now seen corresponding path program 1 times [2023-11-06 22:52:20,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:20,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846606555] [2023-11-06 22:52:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:20,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:20,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:20,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846606555] [2023-11-06 22:52:20,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846606555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:20,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:20,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484691158] [2023-11-06 22:52:20,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:20,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:20,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:20,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 300 [2023-11-06 22:52:20,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:20,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 300 [2023-11-06 22:52:20,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:20,779 INFO L124 PetriNetUnfolderBase]: 133/308 cut-off events. [2023-11-06 22:52:20,780 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:52:20,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 308 events. 133/308 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1618 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 577. Up to 267 conditions per place. [2023-11-06 22:52:20,783 INFO L140 encePairwiseOnDemand]: 293/300 looper letters, 39 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-06 22:52:20,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 181 flow [2023-11-06 22:52:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-06 22:52:20,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811111111111111 [2023-11-06 22:52:20,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-06 22:52:20,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-06 22:52:20,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:20,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-06 22:52:20,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,793 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 77 flow. Second operand 3 states and 433 transitions. [2023-11-06 22:52:20,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 181 flow [2023-11-06 22:52:20,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:52:20,797 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 81 flow [2023-11-06 22:52:20,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-06 22:52:20,798 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-06 22:52:20,798 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 81 flow [2023-11-06 22:52:20,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:20,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:20,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:52:20,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:52:20,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-06 22:52:20,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:20,801 INFO L85 PathProgramCache]: Analyzing trace with hash 556813125, now seen corresponding path program 1 times [2023-11-06 22:52:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:20,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953899994] [2023-11-06 22:52:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:20,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:20,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:20,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953899994] [2023-11-06 22:52:20,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953899994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145153685] [2023-11-06 22:52:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:20,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:20,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:20,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:52:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:21,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:52:21,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:21,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:52:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:21,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145153685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:52:21,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:52:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:52:21,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96626465] [2023-11-06 22:52:21,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:52:21,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:52:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:21,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:52:21,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:52:21,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 300 [2023-11-06 22:52:21,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 81 flow. Second operand has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:21,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 300 [2023-11-06 22:52:21,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:21,216 INFO L124 PetriNetUnfolderBase]: 24/79 cut-off events. [2023-11-06 22:52:21,216 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:52:21,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 79 events. 24/79 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 267 event pairs, 0 based on Foata normal form. 13/80 useless extension candidates. Maximal degree in co-relation 151. Up to 50 conditions per place. [2023-11-06 22:52:21,217 INFO L140 encePairwiseOnDemand]: 295/300 looper letters, 27 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-06 22:52:21,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 130 flow [2023-11-06 22:52:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:52:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:52:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2023-11-06 22:52:21,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2023-11-06 22:52:21,220 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2023-11-06 22:52:21,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2023-11-06 22:52:21,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:21,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2023-11-06 22:52:21,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,228 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,228 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 81 flow. Second operand 4 states and 544 transitions. [2023-11-06 22:52:21,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 130 flow [2023-11-06 22:52:21,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:52:21,229 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 44 flow [2023-11-06 22:52:21,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-11-06 22:52:21,231 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -12 predicate places. [2023-11-06 22:52:21,231 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 44 flow [2023-11-06 22:52:21,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:21,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:52:21,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:21,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:21,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-06 22:52:21,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash 81301962, now seen corresponding path program 1 times [2023-11-06 22:52:21,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:21,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056607751] [2023-11-06 22:52:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:21,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056607751] [2023-11-06 22:52:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056607751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:21,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:21,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603575207] [2023-11-06 22:52:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:21,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:21,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 300 [2023-11-06 22:52:21,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:21,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 300 [2023-11-06 22:52:21,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:21,593 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2023-11-06 22:52:21,593 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:52:21,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 59 events. 20/59 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 4 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 116. Up to 41 conditions per place. [2023-11-06 22:52:21,594 INFO L140 encePairwiseOnDemand]: 296/300 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-11-06 22:52:21,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 78 flow [2023-11-06 22:52:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-11-06 22:52:21,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2023-11-06 22:52:21,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-11-06 22:52:21,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-11-06 22:52:21,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:21,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-11-06 22:52:21,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,603 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 44 flow. Second operand 3 states and 414 transitions. [2023-11-06 22:52:21,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 78 flow [2023-11-06 22:52:21,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:52:21,604 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 41 flow [2023-11-06 22:52:21,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-11-06 22:52:21,605 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -14 predicate places. [2023-11-06 22:52:21,605 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 41 flow [2023-11-06 22:52:21,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:21,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:21,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:52:21,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:52:21,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-06 22:52:21,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:21,607 INFO L85 PathProgramCache]: Analyzing trace with hash 81336917, now seen corresponding path program 1 times [2023-11-06 22:52:21,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442402226] [2023-11-06 22:52:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:21,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:52:21,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:52:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:52:21,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:52:21,655 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:52:21,656 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-06 22:52:21,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-11-06 22:52:21,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-11-06 22:52:21,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-11-06 22:52:21,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-11-06 22:52:21,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-11-06 22:52:21,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-11-06 22:52:21,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-11-06 22:52:21,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-11-06 22:52:21,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-11-06 22:52:21,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-11-06 22:52:21,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-11-06 22:52:21,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-11-06 22:52:21,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-11-06 22:52:21,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-11-06 22:52:21,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:52:21,662 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 22:52:21,665 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:52:21,665 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:52:21,690 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:52:21,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 188 transitions, 392 flow [2023-11-06 22:52:21,770 INFO L124 PetriNetUnfolderBase]: 43/336 cut-off events. [2023-11-06 22:52:21,770 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:52:21,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 336 events. 43/336 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1084 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 207. Up to 9 conditions per place. [2023-11-06 22:52:21,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 188 transitions, 392 flow [2023-11-06 22:52:21,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 188 transitions, 392 flow [2023-11-06 22:52:21,777 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:52:21,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 188 transitions, 392 flow [2023-11-06 22:52:21,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 188 transitions, 392 flow [2023-11-06 22:52:21,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 188 transitions, 392 flow [2023-11-06 22:52:21,823 INFO L124 PetriNetUnfolderBase]: 43/336 cut-off events. [2023-11-06 22:52:21,823 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:52:21,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 336 events. 43/336 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1084 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 207. Up to 9 conditions per place. [2023-11-06 22:52:21,838 INFO L119 LiptonReduction]: Number of co-enabled transitions 13320 [2023-11-06 22:52:26,505 INFO L134 LiptonReduction]: Checked pairs total: 30726 [2023-11-06 22:52:26,506 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-11-06 22:52:26,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:52:26,510 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10ad3954, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:52:26,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-06 22:52:26,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:52:26,512 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-06 22:52:26,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:52:26,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:26,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:52:26,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:52:26,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 31262, now seen corresponding path program 1 times [2023-11-06 22:52:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701696167] [2023-11-06 22:52:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:26,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:26,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701696167] [2023-11-06 22:52:26,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701696167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:26,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:26,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:26,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029224688] [2023-11-06 22:52:26,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:26,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:26,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:26,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 355 [2023-11-06 22:52:26,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:26,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:26,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 355 [2023-11-06 22:52:26,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:27,650 INFO L124 PetriNetUnfolderBase]: 5802/9195 cut-off events. [2023-11-06 22:52:27,650 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-06 22:52:27,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18348 conditions, 9195 events. 5802/9195 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 57563 event pairs, 5096 based on Foata normal form. 653/6665 useless extension candidates. Maximal degree in co-relation 14910. Up to 8366 conditions per place. [2023-11-06 22:52:27,724 INFO L140 encePairwiseOnDemand]: 337/355 looper letters, 75 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-06 22:52:27,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 336 flow [2023-11-06 22:52:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2023-11-06 22:52:27,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408450704225352 [2023-11-06 22:52:27,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2023-11-06 22:52:27,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2023-11-06 22:52:27,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:27,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2023-11-06 22:52:27,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:27,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:27,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:27,735 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 158 flow. Second operand 3 states and 576 transitions. [2023-11-06 22:52:27,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 336 flow [2023-11-06 22:52:27,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:52:27,739 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 130 flow [2023-11-06 22:52:27,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-11-06 22:52:27,740 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-11-06 22:52:27,740 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 130 flow [2023-11-06 22:52:27,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:27,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:27,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:52:27,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:52:27,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:52:27,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash 31263, now seen corresponding path program 1 times [2023-11-06 22:52:27,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:27,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884327975] [2023-11-06 22:52:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:27,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:27,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884327975] [2023-11-06 22:52:27,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884327975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:27,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:27,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:27,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61034554] [2023-11-06 22:52:27,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:27,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:27,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:27,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:27,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:27,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 355 [2023-11-06 22:52:27,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:27,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:27,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 355 [2023-11-06 22:52:27,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:28,958 INFO L124 PetriNetUnfolderBase]: 5772/9248 cut-off events. [2023-11-06 22:52:28,958 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2023-11-06 22:52:28,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18594 conditions, 9248 events. 5772/9248 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 58793 event pairs, 2604 based on Foata normal form. 0/6345 useless extension candidates. Maximal degree in co-relation 16922. Up to 8989 conditions per place. [2023-11-06 22:52:29,115 INFO L140 encePairwiseOnDemand]: 348/355 looper letters, 63 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-06 22:52:29,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 292 flow [2023-11-06 22:52:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-11-06 22:52:29,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136150234741784 [2023-11-06 22:52:29,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-11-06 22:52:29,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-11-06 22:52:29,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:29,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-11-06 22:52:29,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,129 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 130 flow. Second operand 3 states and 547 transitions. [2023-11-06 22:52:29,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 292 flow [2023-11-06 22:52:29,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 71 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:52:29,140 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 146 flow [2023-11-06 22:52:29,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-11-06 22:52:29,142 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-11-06 22:52:29,142 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 146 flow [2023-11-06 22:52:29,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:29,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:52:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:52:29,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:52:29,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:29,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1208603089, now seen corresponding path program 1 times [2023-11-06 22:52:29,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:29,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095882317] [2023-11-06 22:52:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:29,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:29,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:29,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095882317] [2023-11-06 22:52:29,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095882317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:29,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364133490] [2023-11-06 22:52:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:29,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:29,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:29,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:29,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:52:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:29,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:52:29,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:29,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:52:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364133490] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:52:29,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:52:29,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:52:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624034404] [2023-11-06 22:52:29,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:52:29,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:52:29,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:29,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:52:29,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:52:29,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 355 [2023-11-06 22:52:29,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:29,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 355 [2023-11-06 22:52:29,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:29,766 INFO L124 PetriNetUnfolderBase]: 1498/2702 cut-off events. [2023-11-06 22:52:29,767 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2023-11-06 22:52:29,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5681 conditions, 2702 events. 1498/2702 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16206 event pairs, 0 based on Foata normal form. 240/2224 useless extension candidates. Maximal degree in co-relation 628. Up to 1290 conditions per place. [2023-11-06 22:52:29,784 INFO L140 encePairwiseOnDemand]: 348/355 looper letters, 103 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2023-11-06 22:52:29,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 111 transitions, 456 flow [2023-11-06 22:52:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:52:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:52:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2023-11-06 22:52:29,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49859154929577465 [2023-11-06 22:52:29,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1062 transitions. [2023-11-06 22:52:29,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1062 transitions. [2023-11-06 22:52:29,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:29,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1062 transitions. [2023-11-06 22:52:29,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,799 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,799 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 146 flow. Second operand 6 states and 1062 transitions. [2023-11-06 22:52:29,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 111 transitions, 456 flow [2023-11-06 22:52:29,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 111 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:52:29,807 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 104 flow [2023-11-06 22:52:29,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-11-06 22:52:29,809 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-06 22:52:29,809 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 104 flow [2023-11-06 22:52:29,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:29,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:29,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:29,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:30,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:52:30,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:52:30,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1195840346, now seen corresponding path program 1 times [2023-11-06 22:52:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51298394] [2023-11-06 22:52:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:30,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:30,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51298394] [2023-11-06 22:52:30,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51298394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:30,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:30,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:30,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852818048] [2023-11-06 22:52:30,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:30,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:30,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:30,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:30,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:30,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 355 [2023-11-06 22:52:30,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:30,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 355 [2023-11-06 22:52:30,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:30,388 INFO L124 PetriNetUnfolderBase]: 1352/2239 cut-off events. [2023-11-06 22:52:30,389 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2023-11-06 22:52:30,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 2239 events. 1352/2239 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12244 event pairs, 506 based on Foata normal form. 0/1643 useless extension candidates. Maximal degree in co-relation 4439. Up to 2046 conditions per place. [2023-11-06 22:52:30,403 INFO L140 encePairwiseOnDemand]: 348/355 looper letters, 45 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-11-06 22:52:30,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 243 flow [2023-11-06 22:52:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:30,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-11-06 22:52:30,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49765258215962443 [2023-11-06 22:52:30,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-11-06 22:52:30,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-11-06 22:52:30,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:30,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-11-06 22:52:30,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,412 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 104 flow. Second operand 3 states and 530 transitions. [2023-11-06 22:52:30,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 243 flow [2023-11-06 22:52:30,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 228 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:52:30,416 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 120 flow [2023-11-06 22:52:30,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-06 22:52:30,419 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-11-06 22:52:30,420 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 120 flow [2023-11-06 22:52:30,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:30,420 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:52:30,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:52:30,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:52:30,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash -784293053, now seen corresponding path program 1 times [2023-11-06 22:52:30,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:30,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825676072] [2023-11-06 22:52:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:30,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:30,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825676072] [2023-11-06 22:52:30,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825676072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:30,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:30,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:52:30,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350806614] [2023-11-06 22:52:30,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:30,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:30,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 355 [2023-11-06 22:52:30,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:30,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 355 [2023-11-06 22:52:30,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:30,692 INFO L124 PetriNetUnfolderBase]: 972/1650 cut-off events. [2023-11-06 22:52:30,692 INFO L125 PetriNetUnfolderBase]: For 357/357 co-relation queries the response was YES. [2023-11-06 22:52:30,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3761 conditions, 1650 events. 972/1650 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8357 event pairs, 945 based on Foata normal form. 0/1406 useless extension candidates. Maximal degree in co-relation 3080. Up to 1628 conditions per place. [2023-11-06 22:52:30,706 INFO L140 encePairwiseOnDemand]: 353/355 looper letters, 35 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-06 22:52:30,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 188 flow [2023-11-06 22:52:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-11-06 22:52:30,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47981220657276996 [2023-11-06 22:52:30,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-11-06 22:52:30,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-11-06 22:52:30,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:30,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-11-06 22:52:30,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,715 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 120 flow. Second operand 3 states and 511 transitions. [2023-11-06 22:52:30,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 188 flow [2023-11-06 22:52:30,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 40 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:52:30,718 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 115 flow [2023-11-06 22:52:30,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-06 22:52:30,719 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -9 predicate places. [2023-11-06 22:52:30,719 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 115 flow [2023-11-06 22:52:30,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:30,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:30,720 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:52:30,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:52:30,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:52:30,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2086272265, now seen corresponding path program 1 times [2023-11-06 22:52:30,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:30,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102908834] [2023-11-06 22:52:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:30,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:52:30,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:52:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:52:30,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:52:30,766 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:52:30,766 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-06 22:52:30,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-06 22:52:30,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-06 22:52:30,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-06 22:52:30,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-06 22:52:30,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-06 22:52:30,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-06 22:52:30,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-06 22:52:30,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-06 22:52:30,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-06 22:52:30,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-06 22:52:30,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-06 22:52:30,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-06 22:52:30,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-06 22:52:30,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-06 22:52:30,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-06 22:52:30,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-06 22:52:30,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-06 22:52:30,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-06 22:52:30,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:52:30,770 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-06 22:52:30,771 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:52:30,771 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:52:30,815 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:52:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 226 transitions, 479 flow [2023-11-06 22:52:30,913 INFO L124 PetriNetUnfolderBase]: 66/510 cut-off events. [2023-11-06 22:52:30,913 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:52:30,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 510 events. 66/510 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1853 event pairs, 1 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 344. Up to 16 conditions per place. [2023-11-06 22:52:30,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 226 transitions, 479 flow [2023-11-06 22:52:30,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 226 transitions, 479 flow [2023-11-06 22:52:30,925 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:52:30,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 226 transitions, 479 flow [2023-11-06 22:52:30,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 226 transitions, 479 flow [2023-11-06 22:52:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 226 transitions, 479 flow [2023-11-06 22:52:30,995 INFO L124 PetriNetUnfolderBase]: 66/510 cut-off events. [2023-11-06 22:52:30,995 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:52:31,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 510 events. 66/510 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1853 event pairs, 1 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 344. Up to 16 conditions per place. [2023-11-06 22:52:31,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 24192 [2023-11-06 22:52:36,193 INFO L134 LiptonReduction]: Checked pairs total: 58342 [2023-11-06 22:52:36,193 INFO L136 LiptonReduction]: Total number of compositions: 193 [2023-11-06 22:52:36,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:52:36,196 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10ad3954, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:52:36,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-06 22:52:36,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:52:36,198 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-06 22:52:36,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:52:36,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:36,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:52:36,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:52:36,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 45887, now seen corresponding path program 1 times [2023-11-06 22:52:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867155834] [2023-11-06 22:52:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:36,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867155834] [2023-11-06 22:52:36,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867155834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:36,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:36,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:36,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433763947] [2023-11-06 22:52:36,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:36,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:36,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:36,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:36,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 419 [2023-11-06 22:52:36,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 94 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:36,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:36,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 419 [2023-11-06 22:52:36,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:49,323 INFO L124 PetriNetUnfolderBase]: 101364/143399 cut-off events. [2023-11-06 22:52:49,323 INFO L125 PetriNetUnfolderBase]: For 2436/2436 co-relation queries the response was YES. [2023-11-06 22:52:49,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284495 conditions, 143399 events. 101364/143399 cut-off events. For 2436/2436 co-relation queries the response was YES. Maximal size of possible extension queue 5037. Compared 1126084 event pairs, 90349 based on Foata normal form. 19268/112119 useless extension candidates. Maximal degree in co-relation 41904. Up to 128487 conditions per place. [2023-11-06 22:52:50,420 INFO L140 encePairwiseOnDemand]: 395/419 looper letters, 97 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-11-06 22:52:50,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 445 flow [2023-11-06 22:52:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:50,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2023-11-06 22:52:50,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568814638027049 [2023-11-06 22:52:50,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2023-11-06 22:52:50,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2023-11-06 22:52:50,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:50,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2023-11-06 22:52:50,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:50,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:50,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:50,436 INFO L175 Difference]: Start difference. First operand has 76 places, 94 transitions, 215 flow. Second operand 3 states and 700 transitions. [2023-11-06 22:52:50,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 445 flow [2023-11-06 22:52:50,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 445 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:52:50,448 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 175 flow [2023-11-06 22:52:50,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2023-11-06 22:52:50,450 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-11-06 22:52:50,451 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 175 flow [2023-11-06 22:52:50,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:50,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:50,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:52:50,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:52:50,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:52:50,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 45888, now seen corresponding path program 1 times [2023-11-06 22:52:50,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:50,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48609348] [2023-11-06 22:52:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:50,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:50,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:50,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48609348] [2023-11-06 22:52:50,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48609348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:50,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:50,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:50,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633896331] [2023-11-06 22:52:50,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:50,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:50,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 419 [2023-11-06 22:52:50,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:50,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:50,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 419 [2023-11-06 22:52:50,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:02,470 INFO L124 PetriNetUnfolderBase]: 101348/144634 cut-off events. [2023-11-06 22:53:02,470 INFO L125 PetriNetUnfolderBase]: For 5180/5180 co-relation queries the response was YES. [2023-11-06 22:53:02,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288816 conditions, 144634 events. 101348/144634 cut-off events. For 5180/5180 co-relation queries the response was YES. Maximal size of possible extension queue 5140. Compared 1146176 event pairs, 61492 based on Foata normal form. 0/97320 useless extension candidates. Maximal degree in co-relation 263029. Up to 129565 conditions per place. [2023-11-06 22:53:03,261 INFO L140 encePairwiseOnDemand]: 412/419 looper letters, 99 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-11-06 22:53:03,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 113 transitions, 461 flow [2023-11-06 22:53:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-11-06 22:53:03,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354017501988863 [2023-11-06 22:53:03,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-11-06 22:53:03,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-11-06 22:53:03,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:03,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-11-06 22:53:03,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:03,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:03,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:03,285 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 175 flow. Second operand 3 states and 673 transitions. [2023-11-06 22:53:03,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 113 transitions, 461 flow [2023-11-06 22:53:04,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:04,021 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 199 flow [2023-11-06 22:53:04,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-11-06 22:53:04,022 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-11-06 22:53:04,023 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 199 flow [2023-11-06 22:53:04,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:04,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:04,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:53:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:53:04,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:53:04,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1366426072, now seen corresponding path program 1 times [2023-11-06 22:53:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:04,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032168843] [2023-11-06 22:53:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:04,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:04,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032168843] [2023-11-06 22:53:04,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032168843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:04,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:04,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:53:04,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772550481] [2023-11-06 22:53:04,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:04,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:04,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:04,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:04,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:04,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 419 [2023-11-06 22:53:04,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:04,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:04,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 419 [2023-11-06 22:53:04,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:15,036 INFO L124 PetriNetUnfolderBase]: 93999/134025 cut-off events. [2023-11-06 22:53:15,036 INFO L125 PetriNetUnfolderBase]: For 15490/15490 co-relation queries the response was YES. [2023-11-06 22:53:15,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278600 conditions, 134025 events. 93999/134025 cut-off events. For 15490/15490 co-relation queries the response was YES. Maximal size of possible extension queue 4826. Compared 1101639 event pairs, 26877 based on Foata normal form. 2715/93871 useless extension candidates. Maximal degree in co-relation 278493. Up to 91872 conditions per place. [2023-11-06 22:53:15,787 INFO L140 encePairwiseOnDemand]: 414/419 looper letters, 95 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-11-06 22:53:15,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 463 flow [2023-11-06 22:53:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:53:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-11-06 22:53:15,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298329355608592 [2023-11-06 22:53:15,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-11-06 22:53:15,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-11-06 22:53:15,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:15,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-11-06 22:53:15,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:15,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:15,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:15,800 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 199 flow. Second operand 3 states and 666 transitions. [2023-11-06 22:53:15,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 463 flow [2023-11-06 22:53:15,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:53:15,834 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 193 flow [2023-11-06 22:53:15,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-11-06 22:53:15,835 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-11-06 22:53:15,835 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 193 flow [2023-11-06 22:53:15,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:15,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:15,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:53:15,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:53:15,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:53:15,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:15,837 INFO L85 PathProgramCache]: Analyzing trace with hash -590461186, now seen corresponding path program 1 times [2023-11-06 22:53:15,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:15,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620124200] [2023-11-06 22:53:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:15,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:15,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620124200] [2023-11-06 22:53:15,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620124200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:15,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348426] [2023-11-06 22:53:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:15,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:15,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:15,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:15,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3b61b56-6199-4f8c-ad42-4e731815cdb4/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:53:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:53:15,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:15,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:16,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:16,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:16,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-06 22:53:16,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748729009] [2023-11-06 22:53:16,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:16,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:53:16,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:16,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:53:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:53:16,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 419 [2023-11-06 22:53:16,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:16,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:16,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 419 [2023-11-06 22:53:16,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand