./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longest.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_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/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_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/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_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:02:20,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:02:20,938 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:02:20,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:02:20,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:02:20,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:02:20,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:02:20,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:02:20,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:02:20,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:02:21,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:02:21,001 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:02:21,002 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:02:21,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:02:21,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:02:21,005 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:02:21,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:02:21,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:02:21,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:02:21,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:02:21,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:02:21,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:02:21,008 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:02:21,009 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:02:21,009 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:02:21,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:02:21,011 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:02:21,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:02:21,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:02:21,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:02:21,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:21,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:02:21,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:02:21,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:02:21,016 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:02:21,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:02:21,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:02:21,017 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:02:21,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:02:21,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:02:21,018 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:02:21,019 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_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2023-11-06 23:02:21,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:02:21,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:02:21,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:02:21,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:02:21,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:02:21,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/queue_longest.i [2023-11-06 23:02:24,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:02:24,897 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:02:24,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/sv-benchmarks/c/pthread/queue_longest.i [2023-11-06 23:02:24,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/data/8e47819ec/11b96cce8f714ef484dada8e512a8192/FLAG8116fb8f5 [2023-11-06 23:02:24,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/data/8e47819ec/11b96cce8f714ef484dada8e512a8192 [2023-11-06 23:02:24,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:02:24,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:02:24,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:24,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:02:24,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:02:24,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:24" (1/1) ... [2023-11-06 23:02:24,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf5a89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:24, skipping insertion in model container [2023-11-06 23:02:24,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:24" (1/1) ... [2023-11-06 23:02:25,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:02:25,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:25,629 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:02:25,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:25,786 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:02:25,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25 WrapperNode [2023-11-06 23:02:25,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:25,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:25,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:02:25,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:02:25,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,860 INFO L138 Inliner]: procedures = 274, calls = 63, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 269 [2023-11-06 23:02:25,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:25,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:02:25,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:02:25,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:02:25,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:02:25,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:02:25,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:02:25,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:02:25,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (1/1) ... [2023-11-06 23:02:25,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:02:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:25,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:02:26,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:02:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 23:02:26,033 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 23:02:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 23:02:26,033 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 23:02:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:02:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:02:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:02:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:02:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 23:02:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:02:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:02:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:02:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:02:26,036 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 23:02:26,201 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:02:26,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:02:26,659 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:02:26,671 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:02:26,671 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 23:02:26,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:26 BoogieIcfgContainer [2023-11-06 23:02:26,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:02:26,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:02:26,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:02:26,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:02:26,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:02:24" (1/3) ... [2023-11-06 23:02:26,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e333ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:26, skipping insertion in model container [2023-11-06 23:02:26,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:25" (2/3) ... [2023-11-06 23:02:26,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e333ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:02:26, skipping insertion in model container [2023-11-06 23:02:26,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:26" (3/3) ... [2023-11-06 23:02:26,685 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-11-06 23:02:26,694 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:02:26,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:02:26,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-06 23:02:26,705 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:02:26,864 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 23:02:26,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 318 transitions, 650 flow [2023-11-06 23:02:27,074 INFO L124 PetriNetUnfolderBase]: 18/316 cut-off events. [2023-11-06 23:02:27,075 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 23:02:27,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 316 events. 18/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 520 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-06 23:02:27,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 318 transitions, 650 flow [2023-11-06 23:02:27,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 306 transitions, 621 flow [2023-11-06 23:02:27,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:02:27,130 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 306 transitions, 621 flow [2023-11-06 23:02:27,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 306 transitions, 621 flow [2023-11-06 23:02:27,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 306 transitions, 621 flow [2023-11-06 23:02:27,204 INFO L124 PetriNetUnfolderBase]: 18/306 cut-off events. [2023-11-06 23:02:27,205 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 23:02:27,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 306 events. 18/306 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 475 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2023-11-06 23:02:27,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 25932 [2023-11-06 23:02:38,480 INFO L134 LiptonReduction]: Checked pairs total: 52722 [2023-11-06 23:02:38,480 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-11-06 23:02:38,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:02:38,525 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;@78386859, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:02:38,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-06 23:02:38,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:02:38,530 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-06 23:02:38,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:02:38,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:38,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:02:38,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:38,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:38,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1307034356, now seen corresponding path program 1 times [2023-11-06 23:02:38,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:38,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792900788] [2023-11-06 23:02:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:38,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,558 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 23:02:39,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:39,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792900788] [2023-11-06 23:02:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792900788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:39,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:39,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:02:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006215463] [2023-11-06 23:02:39,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:39,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:02:39,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:39,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:02:39,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:02:39,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 620 [2023-11-06 23:02:39,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 23:02:39,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:39,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 620 [2023-11-06 23:02:39,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:40,846 INFO L124 PetriNetUnfolderBase]: 3137/5160 cut-off events. [2023-11-06 23:02:40,847 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 23:02:40,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10186 conditions, 5160 events. 3137/5160 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 27390 event pairs, 2489 based on Foata normal form. 80/3629 useless extension candidates. Maximal degree in co-relation 9962. Up to 4915 conditions per place. [2023-11-06 23:02:40,892 INFO L140 encePairwiseOnDemand]: 609/620 looper letters, 71 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2023-11-06 23:02:40,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 341 flow [2023-11-06 23:02:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1741 transitions. [2023-11-06 23:02:40,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46801075268817205 [2023-11-06 23:02:40,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1741 transitions. [2023-11-06 23:02:40,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1741 transitions. [2023-11-06 23:02:40,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:40,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1741 transitions. [2023-11-06 23:02:40,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states 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 23:02:40,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:40,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:40,963 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 169 flow. Second operand 6 states and 1741 transitions. [2023-11-06 23:02:40,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 341 flow [2023-11-06 23:02:40,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:02:40,974 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 218 flow [2023-11-06 23:02:40,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-11-06 23:02:40,981 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2023-11-06 23:02:40,981 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 218 flow [2023-11-06 23:02:40,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.2) internal successors, (1386), 5 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 23:02:40,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:40,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:40,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:02:40,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:40,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1862776920, now seen corresponding path program 1 times [2023-11-06 23:02:40,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:40,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993951335] [2023-11-06 23:02:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:40,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:41,398 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 23:02:41,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:41,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993951335] [2023-11-06 23:02:41,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993951335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:41,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:41,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:02:41,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564373584] [2023-11-06 23:02:41,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:41,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:41,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:41,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:41,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 620 [2023-11-06 23:02:41,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 273.1666666666667) internal successors, (1639), 6 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states 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 23:02:41,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:41,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 620 [2023-11-06 23:02:41,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:42,737 INFO L124 PetriNetUnfolderBase]: 3363/5525 cut-off events. [2023-11-06 23:02:42,738 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2023-11-06 23:02:42,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11346 conditions, 5525 events. 3363/5525 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 29977 event pairs, 734 based on Foata normal form. 0/3852 useless extension candidates. Maximal degree in co-relation 10349. Up to 4959 conditions per place. [2023-11-06 23:02:42,788 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 128 selfloop transitions, 17 changer transitions 0/151 dead transitions. [2023-11-06 23:02:42,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 151 transitions, 658 flow [2023-11-06 23:02:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1775 transitions. [2023-11-06 23:02:42,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771505376344086 [2023-11-06 23:02:42,796 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1775 transitions. [2023-11-06 23:02:42,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1775 transitions. [2023-11-06 23:02:42,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:42,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1775 transitions. [2023-11-06 23:02:42,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.8333333333333) internal successors, (1775), 6 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states 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 23:02:42,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:42,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:42,818 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 218 flow. Second operand 6 states and 1775 transitions. [2023-11-06 23:02:42,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 151 transitions, 658 flow [2023-11-06 23:02:42,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 151 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:02:42,826 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 312 flow [2023-11-06 23:02:42,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2023-11-06 23:02:42,828 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2023-11-06 23:02:42,828 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 312 flow [2023-11-06 23:02:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.1666666666667) internal successors, (1639), 6 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states 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 23:02:42,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:42,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:42,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:02:42,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:42,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1862921070, now seen corresponding path program 2 times [2023-11-06 23:02:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214554820] [2023-11-06 23:02:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:42,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:43,320 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 23:02:43,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214554820] [2023-11-06 23:02:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214554820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:43,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:02:43,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995136565] [2023-11-06 23:02:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:43,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:43,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:43,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 620 [2023-11-06 23:02:43,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 274.1666666666667) internal successors, (1645), 6 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states 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 23:02:43,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:43,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 620 [2023-11-06 23:02:43,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:44,603 INFO L124 PetriNetUnfolderBase]: 3413/5612 cut-off events. [2023-11-06 23:02:44,604 INFO L125 PetriNetUnfolderBase]: For 860/860 co-relation queries the response was YES. [2023-11-06 23:02:44,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12208 conditions, 5612 events. 3413/5612 cut-off events. For 860/860 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 30905 event pairs, 789 based on Foata normal form. 0/3947 useless extension candidates. Maximal degree in co-relation 11210. Up to 4917 conditions per place. [2023-11-06 23:02:44,669 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 130 selfloop transitions, 20 changer transitions 0/156 dead transitions. [2023-11-06 23:02:44,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 156 transitions, 759 flow [2023-11-06 23:02:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1780 transitions. [2023-11-06 23:02:44,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-11-06 23:02:44,676 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1780 transitions. [2023-11-06 23:02:44,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1780 transitions. [2023-11-06 23:02:44,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:44,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1780 transitions. [2023-11-06 23:02:44,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 296.6666666666667) internal successors, (1780), 6 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states 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 23:02:44,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:44,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:44,698 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 312 flow. Second operand 6 states and 1780 transitions. [2023-11-06 23:02:44,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 156 transitions, 759 flow [2023-11-06 23:02:44,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 156 transitions, 741 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-06 23:02:44,774 INFO L231 Difference]: Finished difference. Result has 98 places, 99 transitions, 386 flow [2023-11-06 23:02:44,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=98, PETRI_TRANSITIONS=99} [2023-11-06 23:02:44,775 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2023-11-06 23:02:44,775 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 99 transitions, 386 flow [2023-11-06 23:02:44,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.1666666666667) internal successors, (1645), 6 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states 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 23:02:44,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:44,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:44,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:02:44,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:44,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash -239472979, now seen corresponding path program 1 times [2023-11-06 23:02:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:44,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787383517] [2023-11-06 23:02:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:44,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:44,838 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 23:02:44,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:44,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787383517] [2023-11-06 23:02:44,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787383517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:44,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:44,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549298854] [2023-11-06 23:02:44,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:44,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:44,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:44,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:44,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 620 [2023-11-06 23:02:44,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 99 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 23:02:44,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:44,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 620 [2023-11-06 23:02:44,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:46,200 INFO L124 PetriNetUnfolderBase]: 5518/9314 cut-off events. [2023-11-06 23:02:46,200 INFO L125 PetriNetUnfolderBase]: For 2211/2285 co-relation queries the response was YES. [2023-11-06 23:02:46,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20036 conditions, 9314 events. 5518/9314 cut-off events. For 2211/2285 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 59496 event pairs, 2472 based on Foata normal form. 74/6767 useless extension candidates. Maximal degree in co-relation 18612. Up to 5091 conditions per place. [2023-11-06 23:02:46,274 INFO L140 encePairwiseOnDemand]: 615/620 looper letters, 159 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-11-06 23:02:46,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 172 transitions, 949 flow [2023-11-06 23:02:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2023-11-06 23:02:46,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5521505376344086 [2023-11-06 23:02:46,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2023-11-06 23:02:46,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2023-11-06 23:02:46,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:46,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2023-11-06 23:02:46,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states 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 23:02:46,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:46,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:46,291 INFO L175 Difference]: Start difference. First operand has 98 places, 99 transitions, 386 flow. Second operand 3 states and 1027 transitions. [2023-11-06 23:02:46,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 172 transitions, 949 flow [2023-11-06 23:02:46,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 933 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-11-06 23:02:46,377 INFO L231 Difference]: Finished difference. Result has 101 places, 100 transitions, 394 flow [2023-11-06 23:02:46,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=101, PETRI_TRANSITIONS=100} [2023-11-06 23:02:46,378 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2023-11-06 23:02:46,378 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 394 flow [2023-11-06 23:02:46,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 23:02:46,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:46,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:46,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:02:46,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:46,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash 315127159, now seen corresponding path program 1 times [2023-11-06 23:02:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:46,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097510958] [2023-11-06 23:02:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:46,650 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 23:02:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097510958] [2023-11-06 23:02:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097510958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:46,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:46,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:02:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119266896] [2023-11-06 23:02:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:46,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:02:46,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:02:46,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:02:46,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 620 [2023-11-06 23:02:46,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 100 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 23:02:46,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:46,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 620 [2023-11-06 23:02:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:48,549 INFO L124 PetriNetUnfolderBase]: 5871/9731 cut-off events. [2023-11-06 23:02:48,550 INFO L125 PetriNetUnfolderBase]: For 3432/3432 co-relation queries the response was YES. [2023-11-06 23:02:48,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22004 conditions, 9731 events. 5871/9731 cut-off events. For 3432/3432 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 58796 event pairs, 4511 based on Foata normal form. 0/7116 useless extension candidates. Maximal degree in co-relation 19790. Up to 9253 conditions per place. [2023-11-06 23:02:48,651 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 89 selfloop transitions, 10 changer transitions 0/105 dead transitions. [2023-11-06 23:02:48,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 604 flow [2023-11-06 23:02:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1736 transitions. [2023-11-06 23:02:48,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-06 23:02:48,665 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1736 transitions. [2023-11-06 23:02:48,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1736 transitions. [2023-11-06 23:02:48,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:48,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1736 transitions. [2023-11-06 23:02:48,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.3333333333333) internal successors, (1736), 6 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states 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 23:02:48,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:48,686 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:48,686 INFO L175 Difference]: Start difference. First operand has 101 places, 100 transitions, 394 flow. Second operand 6 states and 1736 transitions. [2023-11-06 23:02:48,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 604 flow [2023-11-06 23:02:48,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 602 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:48,798 INFO L231 Difference]: Finished difference. Result has 106 places, 102 transitions, 432 flow [2023-11-06 23:02:48,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=106, PETRI_TRANSITIONS=102} [2023-11-06 23:02:48,799 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 29 predicate places. [2023-11-06 23:02:48,799 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 102 transitions, 432 flow [2023-11-06 23:02:48,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states 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 23:02:48,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:48,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:48,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:02:48,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:48,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:48,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1286226848, now seen corresponding path program 1 times [2023-11-06 23:02:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:48,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135230917] [2023-11-06 23:02:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,087 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 23:02:49,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135230917] [2023-11-06 23:02:49,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135230917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:49,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:49,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:02:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367584037] [2023-11-06 23:02:49,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:49,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:49,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 620 [2023-11-06 23:02:49,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 102 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states 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 23:02:49,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:49,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 620 [2023-11-06 23:02:49,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:51,241 INFO L124 PetriNetUnfolderBase]: 6066/10009 cut-off events. [2023-11-06 23:02:51,241 INFO L125 PetriNetUnfolderBase]: For 2199/2199 co-relation queries the response was YES. [2023-11-06 23:02:51,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22914 conditions, 10009 events. 6066/10009 cut-off events. For 2199/2199 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 60880 event pairs, 1313 based on Foata normal form. 82/7612 useless extension candidates. Maximal degree in co-relation 13290. Up to 8732 conditions per place. [2023-11-06 23:02:51,354 INFO L140 encePairwiseOnDemand]: 610/620 looper letters, 141 selfloop transitions, 20 changer transitions 0/167 dead transitions. [2023-11-06 23:02:51,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 167 transitions, 946 flow [2023-11-06 23:02:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1773 transitions. [2023-11-06 23:02:51,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47661290322580646 [2023-11-06 23:02:51,365 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1773 transitions. [2023-11-06 23:02:51,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1773 transitions. [2023-11-06 23:02:51,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:51,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1773 transitions. [2023-11-06 23:02:51,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 295.5) internal successors, (1773), 6 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 23:02:51,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:51,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:51,390 INFO L175 Difference]: Start difference. First operand has 106 places, 102 transitions, 432 flow. Second operand 6 states and 1773 transitions. [2023-11-06 23:02:51,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 167 transitions, 946 flow [2023-11-06 23:02:51,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 167 transitions, 930 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 23:02:51,451 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 484 flow [2023-11-06 23:02:51,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=484, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2023-11-06 23:02:51,456 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 31 predicate places. [2023-11-06 23:02:51,457 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 484 flow [2023-11-06 23:02:51,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states 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 23:02:51,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:51,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:51,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:02:51,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:51,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1175258027, now seen corresponding path program 1 times [2023-11-06 23:02:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:51,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288951002] [2023-11-06 23:02:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:51,561 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 23:02:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288951002] [2023-11-06 23:02:51,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288951002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:51,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:51,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:02:51,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832712625] [2023-11-06 23:02:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:51,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:02:51,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:02:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:02:51,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 620 [2023-11-06 23:02:51,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 23:02:51,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:51,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 620 [2023-11-06 23:02:51,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:52,872 INFO L124 PetriNetUnfolderBase]: 4424/7324 cut-off events. [2023-11-06 23:02:52,873 INFO L125 PetriNetUnfolderBase]: For 2184/2225 co-relation queries the response was YES. [2023-11-06 23:02:52,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16659 conditions, 7324 events. 4424/7324 cut-off events. For 2184/2225 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 40986 event pairs, 2212 based on Foata normal form. 209/5401 useless extension candidates. Maximal degree in co-relation 15708. Up to 4807 conditions per place. [2023-11-06 23:02:52,941 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 114 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2023-11-06 23:02:52,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 126 transitions, 717 flow [2023-11-06 23:02:52,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:02:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:02:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-11-06 23:02:52,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344086021505376 [2023-11-06 23:02:52,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-11-06 23:02:52,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-11-06 23:02:52,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:52,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-11-06 23:02:52,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:52,961 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 484 flow. Second operand 3 states and 994 transitions. [2023-11-06 23:02:52,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 126 transitions, 717 flow [2023-11-06 23:02:52,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 653 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-11-06 23:02:52,973 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 345 flow [2023-11-06 23:02:52,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2023-11-06 23:02:52,975 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2023-11-06 23:02:52,975 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 345 flow [2023-11-06 23:02:52,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 23:02:52,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:52,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:52,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:02:52,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:52,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1286821494, now seen corresponding path program 2 times [2023-11-06 23:02:52,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:52,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409486593] [2023-11-06 23:02:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:53,347 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 23:02:53,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:53,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409486593] [2023-11-06 23:02:53,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409486593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:53,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:53,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:02:53,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083371654] [2023-11-06 23:02:53,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:53,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:53,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:53,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 620 [2023-11-06 23:02:53,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 274.6666666666667) internal successors, (1648), 6 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:53,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:53,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 620 [2023-11-06 23:02:53,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:54,810 INFO L124 PetriNetUnfolderBase]: 4627/7781 cut-off events. [2023-11-06 23:02:54,811 INFO L125 PetriNetUnfolderBase]: For 1531/1531 co-relation queries the response was YES. [2023-11-06 23:02:54,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17426 conditions, 7781 events. 4627/7781 cut-off events. For 1531/1531 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 43886 event pairs, 3453 based on Foata normal form. 34/5626 useless extension candidates. Maximal degree in co-relation 16350. Up to 6839 conditions per place. [2023-11-06 23:02:54,879 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 110 selfloop transitions, 14 changer transitions 0/131 dead transitions. [2023-11-06 23:02:54,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 131 transitions, 731 flow [2023-11-06 23:02:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1750 transitions. [2023-11-06 23:02:54,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47043010752688175 [2023-11-06 23:02:54,888 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1750 transitions. [2023-11-06 23:02:54,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1750 transitions. [2023-11-06 23:02:54,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:54,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1750 transitions. [2023-11-06 23:02:54,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 291.6666666666667) internal successors, (1750), 6 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states 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 23:02:54,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:54,906 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:54,907 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 345 flow. Second operand 6 states and 1750 transitions. [2023-11-06 23:02:54,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 131 transitions, 731 flow [2023-11-06 23:02:54,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 131 transitions, 728 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:02:54,918 INFO L231 Difference]: Finished difference. Result has 103 places, 93 transitions, 392 flow [2023-11-06 23:02:54,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=103, PETRI_TRANSITIONS=93} [2023-11-06 23:02:54,919 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2023-11-06 23:02:54,919 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 93 transitions, 392 flow [2023-11-06 23:02:54,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.6666666666667) internal successors, (1648), 6 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:54,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:54,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:54,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:02:54,921 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:54,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1184932783, now seen corresponding path program 1 times [2023-11-06 23:02:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904057757] [2023-11-06 23:02:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:55,385 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 23:02:55,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904057757] [2023-11-06 23:02:55,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904057757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:55,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:55,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:02:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345696743] [2023-11-06 23:02:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:55,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:55,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:55,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 620 [2023-11-06 23:02:55,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 93 transitions, 392 flow. Second operand has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 23:02:55,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:55,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 620 [2023-11-06 23:02:55,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:56,983 INFO L124 PetriNetUnfolderBase]: 4560/7680 cut-off events. [2023-11-06 23:02:56,983 INFO L125 PetriNetUnfolderBase]: For 1916/1916 co-relation queries the response was YES. [2023-11-06 23:02:57,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17308 conditions, 7680 events. 4560/7680 cut-off events. For 1916/1916 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 43445 event pairs, 1552 based on Foata normal form. 17/5545 useless extension candidates. Maximal degree in co-relation 15483. Up to 6541 conditions per place. [2023-11-06 23:02:57,051 INFO L140 encePairwiseOnDemand]: 613/620 looper letters, 106 selfloop transitions, 13 changer transitions 0/126 dead transitions. [2023-11-06 23:02:57,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 126 transitions, 740 flow [2023-11-06 23:02:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1754 transitions. [2023-11-06 23:02:57,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471505376344086 [2023-11-06 23:02:57,065 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1754 transitions. [2023-11-06 23:02:57,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1754 transitions. [2023-11-06 23:02:57,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:57,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1754 transitions. [2023-11-06 23:02:57,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 292.3333333333333) internal successors, (1754), 6 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states 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 23:02:57,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:57,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:57,084 INFO L175 Difference]: Start difference. First operand has 103 places, 93 transitions, 392 flow. Second operand 6 states and 1754 transitions. [2023-11-06 23:02:57,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 126 transitions, 740 flow [2023-11-06 23:02:57,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 126 transitions, 716 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 23:02:57,096 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 376 flow [2023-11-06 23:02:57,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2023-11-06 23:02:57,097 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 25 predicate places. [2023-11-06 23:02:57,098 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 376 flow [2023-11-06 23:02:57,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 23:02:57,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:57,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:57,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:02:57,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:57,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1184932752, now seen corresponding path program 3 times [2023-11-06 23:02:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:57,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992256183] [2023-11-06 23:02:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:57,429 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 23:02:57,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:57,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992256183] [2023-11-06 23:02:57,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992256183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:57,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:57,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:02:57,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237151707] [2023-11-06 23:02:57,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:57,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:57,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:57,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:57,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 620 [2023-11-06 23:02:57,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 273.6666666666667) internal successors, (1642), 6 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states 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 23:02:57,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:57,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 620 [2023-11-06 23:02:57,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:02:59,106 INFO L124 PetriNetUnfolderBase]: 4535/7630 cut-off events. [2023-11-06 23:02:59,106 INFO L125 PetriNetUnfolderBase]: For 1810/1810 co-relation queries the response was YES. [2023-11-06 23:02:59,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17182 conditions, 7630 events. 4535/7630 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 43027 event pairs, 1522 based on Foata normal form. 17/5503 useless extension candidates. Maximal degree in co-relation 15500. Up to 6541 conditions per place. [2023-11-06 23:02:59,173 INFO L140 encePairwiseOnDemand]: 614/620 looper letters, 105 selfloop transitions, 13 changer transitions 0/125 dead transitions. [2023-11-06 23:02:59,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 125 transitions, 734 flow [2023-11-06 23:02:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:02:59,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:02:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1734 transitions. [2023-11-06 23:02:59,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661290322580645 [2023-11-06 23:02:59,183 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1734 transitions. [2023-11-06 23:02:59,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1734 transitions. [2023-11-06 23:02:59,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:02:59,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1734 transitions. [2023-11-06 23:02:59,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 289.0) internal successors, (1734), 6 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states 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 23:02:59,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:59,201 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:02:59,201 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 376 flow. Second operand 6 states and 1734 transitions. [2023-11-06 23:02:59,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 125 transitions, 734 flow [2023-11-06 23:02:59,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 125 transitions, 708 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:02:59,214 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 370 flow [2023-11-06 23:02:59,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-06 23:02:59,216 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2023-11-06 23:02:59,216 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 370 flow [2023-11-06 23:02:59,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.6666666666667) internal successors, (1642), 6 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states 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 23:02:59,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:02:59,217 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:59,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:02:59,218 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:02:59,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1737444360, now seen corresponding path program 1 times [2023-11-06 23:02:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:59,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847446505] [2023-11-06 23:02:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:02:59,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:59,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847446505] [2023-11-06 23:02:59,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847446505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:59,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305850838] [2023-11-06 23:02:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:59,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:59,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:59,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:59,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:02:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:59,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:02:59,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:59,553 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 23:02:59,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:02:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305850838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:59,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 23:02:59,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664641864] [2023-11-06 23:02:59,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:59,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:59,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:59,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:02:59,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 620 [2023-11-06 23:02:59,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 23:02:59,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:02:59,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 620 [2023-11-06 23:02:59,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:00,863 INFO L124 PetriNetUnfolderBase]: 3906/6988 cut-off events. [2023-11-06 23:03:00,864 INFO L125 PetriNetUnfolderBase]: For 1737/1752 co-relation queries the response was YES. [2023-11-06 23:03:00,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14917 conditions, 6988 events. 3906/6988 cut-off events. For 1737/1752 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 42255 event pairs, 119 based on Foata normal form. 13/5214 useless extension candidates. Maximal degree in co-relation 13399. Up to 3342 conditions per place. [2023-11-06 23:03:00,938 INFO L140 encePairwiseOnDemand]: 617/620 looper letters, 175 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2023-11-06 23:03:00,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 1050 flow [2023-11-06 23:03:00,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:03:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:03:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1346 transitions. [2023-11-06 23:03:00,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542741935483871 [2023-11-06 23:03:00,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1346 transitions. [2023-11-06 23:03:00,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1346 transitions. [2023-11-06 23:03:00,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:00,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1346 transitions. [2023-11-06 23:03:00,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 336.5) internal successors, (1346), 4 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states 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 23:03:00,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states 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 23:03:00,959 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states 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 23:03:00,959 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 370 flow. Second operand 4 states and 1346 transitions. [2023-11-06 23:03:00,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 1050 flow [2023-11-06 23:03:00,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 188 transitions, 1000 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:03:00,969 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 344 flow [2023-11-06 23:03:00,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2023-11-06 23:03:00,970 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2023-11-06 23:03:00,970 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 344 flow [2023-11-06 23:03:00,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 23:03:00,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:00,972 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:00,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:03:01,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb1ffc0-2db2-4b44-86f9-7449e94a0dee/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 23:03:01,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:01,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1737444291, now seen corresponding path program 1 times [2023-11-06 23:03:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:01,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490416620] [2023-11-06 23:03:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:03:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:01,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490416620] [2023-11-06 23:03:01,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490416620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:01,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:01,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:01,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715211949] [2023-11-06 23:03:01,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:01,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:01,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:01,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:01,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:01,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 620 [2023-11-06 23:03:01,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 23:03:01,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:01,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 620 [2023-11-06 23:03:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:02,181 INFO L124 PetriNetUnfolderBase]: 3695/6669 cut-off events. [2023-11-06 23:03:02,181 INFO L125 PetriNetUnfolderBase]: For 1888/1903 co-relation queries the response was YES. [2023-11-06 23:03:02,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14235 conditions, 6669 events. 3695/6669 cut-off events. For 1888/1903 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 39656 event pairs, 483 based on Foata normal form. 13/5079 useless extension candidates. Maximal degree in co-relation 12866. Up to 4765 conditions per place. [2023-11-06 23:03:02,217 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 114 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-11-06 23:03:02,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 711 flow [2023-11-06 23:03:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:03:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2023-11-06 23:03:02,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2023-11-06 23:03:02,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2023-11-06 23:03:02,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2023-11-06 23:03:02,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:02,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2023-11-06 23:03:02,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 23:03:02,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:02,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:02,232 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 344 flow. Second operand 3 states and 990 transitions. [2023-11-06 23:03:02,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 711 flow [2023-11-06 23:03:02,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 708 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:03:02,239 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 353 flow [2023-11-06 23:03:02,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2023-11-06 23:03:02,241 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2023-11-06 23:03:02,241 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 353 flow [2023-11-06 23:03:02,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 23:03:02,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:02,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:02,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:03:02,242 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:02,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash 738575667, now seen corresponding path program 1 times [2023-11-06 23:03:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:02,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414941887] [2023-11-06 23:03:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:02,338 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 23:03:02,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:02,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414941887] [2023-11-06 23:03:02,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414941887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:02,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:02,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:02,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547411719] [2023-11-06 23:03:02,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:02,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:02,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:02,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:02,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:02,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 620 [2023-11-06 23:03:02,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 23:03:02,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:02,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 620 [2023-11-06 23:03:02,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:03,290 INFO L124 PetriNetUnfolderBase]: 4288/7434 cut-off events. [2023-11-06 23:03:03,290 INFO L125 PetriNetUnfolderBase]: For 4941/4950 co-relation queries the response was YES. [2023-11-06 23:03:03,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17665 conditions, 7434 events. 4288/7434 cut-off events. For 4941/4950 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 44148 event pairs, 1756 based on Foata normal form. 9/5741 useless extension candidates. Maximal degree in co-relation 16094. Up to 6211 conditions per place. [2023-11-06 23:03:03,363 INFO L140 encePairwiseOnDemand]: 613/620 looper letters, 118 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-06 23:03:03,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 131 transitions, 712 flow [2023-11-06 23:03:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:03:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-11-06 23:03:03,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349462365591398 [2023-11-06 23:03:03,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-11-06 23:03:03,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-11-06 23:03:03,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:03,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-11-06 23:03:03,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 23:03:03,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:03,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:03,381 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 353 flow. Second operand 3 states and 995 transitions. [2023-11-06 23:03:03,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 131 transitions, 712 flow [2023-11-06 23:03:03,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 131 transitions, 704 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:03:03,392 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 369 flow [2023-11-06 23:03:03,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2023-11-06 23:03:03,393 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2023-11-06 23:03:03,393 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 369 flow [2023-11-06 23:03:03,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 23:03:03,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:03,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:03,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:03:03,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:03,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:03,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1425610286, now seen corresponding path program 1 times [2023-11-06 23:03:03,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:03,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413819067] [2023-11-06 23:03:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:03,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:04,423 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 23:03:04,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:04,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413819067] [2023-11-06 23:03:04,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413819067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:04,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:04,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:03:04,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340046145] [2023-11-06 23:03:04,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:04,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:03:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:04,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:03:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:03:05,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 620 [2023-11-06 23:03:05,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 369 flow. Second operand has 13 states, 13 states have (on average 260.46153846153845) internal successors, (3386), 13 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states 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 23:03:05,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:05,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 620 [2023-11-06 23:03:05,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:06,723 INFO L124 PetriNetUnfolderBase]: 4430/7645 cut-off events. [2023-11-06 23:03:06,723 INFO L125 PetriNetUnfolderBase]: For 3820/3820 co-relation queries the response was YES. [2023-11-06 23:03:06,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18731 conditions, 7645 events. 4430/7645 cut-off events. For 3820/3820 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 43227 event pairs, 3634 based on Foata normal form. 0/6113 useless extension candidates. Maximal degree in co-relation 17062. Up to 7161 conditions per place. [2023-11-06 23:03:06,787 INFO L140 encePairwiseOnDemand]: 605/620 looper letters, 83 selfloop transitions, 24 changer transitions 1/115 dead transitions. [2023-11-06 23:03:06,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 679 flow [2023-11-06 23:03:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:03:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:03:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3206 transitions. [2023-11-06 23:03:06,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43091397849462365 [2023-11-06 23:03:06,800 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3206 transitions. [2023-11-06 23:03:06,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3206 transitions. [2023-11-06 23:03:06,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:06,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3206 transitions. [2023-11-06 23:03:06,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 267.1666666666667) internal successors, (3206), 12 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states 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 23:03:06,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 23:03:06,827 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 23:03:06,827 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 369 flow. Second operand 12 states and 3206 transitions. [2023-11-06 23:03:06,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 679 flow [2023-11-06 23:03:06,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 115 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:03:06,840 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 513 flow [2023-11-06 23:03:06,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=513, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2023-11-06 23:03:06,841 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 39 predicate places. [2023-11-06 23:03:06,841 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 513 flow [2023-11-06 23:03:06,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 260.46153846153845) internal successors, (3386), 13 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states 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 23:03:06,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:06,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:06,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:03:06,844 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:06,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1425610251, now seen corresponding path program 1 times [2023-11-06 23:03:06,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:06,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278212396] [2023-11-06 23:03:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:07,768 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 23:03:07,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:07,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278212396] [2023-11-06 23:03:07,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278212396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:07,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:07,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:03:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743446562] [2023-11-06 23:03:07,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:07,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:03:07,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:03:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:03:08,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 23:03:08,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 513 flow. Second operand has 13 states, 13 states have (on average 256.46153846153845) internal successors, (3334), 13 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states 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 23:03:08,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:08,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 23:03:08,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:10,232 INFO L124 PetriNetUnfolderBase]: 4428/7641 cut-off events. [2023-11-06 23:03:10,232 INFO L125 PetriNetUnfolderBase]: For 4239/4239 co-relation queries the response was YES. [2023-11-06 23:03:10,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19464 conditions, 7641 events. 4428/7641 cut-off events. For 4239/4239 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 43172 event pairs, 3634 based on Foata normal form. 0/6111 useless extension candidates. Maximal degree in co-relation 17653. Up to 7159 conditions per place. [2023-11-06 23:03:10,292 INFO L140 encePairwiseOnDemand]: 606/620 looper letters, 83 selfloop transitions, 23 changer transitions 1/114 dead transitions. [2023-11-06 23:03:10,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 114 transitions, 757 flow [2023-11-06 23:03:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:03:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:03:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3157 transitions. [2023-11-06 23:03:10,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243279569892473 [2023-11-06 23:03:10,305 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3157 transitions. [2023-11-06 23:03:10,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3157 transitions. [2023-11-06 23:03:10,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:10,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3157 transitions. [2023-11-06 23:03:10,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 263.0833333333333) internal successors, (3157), 12 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states 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 23:03:10,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 23:03:10,332 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 23:03:10,332 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 513 flow. Second operand 12 states and 3157 transitions. [2023-11-06 23:03:10,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 114 transitions, 757 flow [2023-11-06 23:03:10,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 114 transitions, 710 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-06 23:03:10,349 INFO L231 Difference]: Finished difference. Result has 122 places, 102 transitions, 506 flow [2023-11-06 23:03:10,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=506, PETRI_PLACES=122, PETRI_TRANSITIONS=102} [2023-11-06 23:03:10,350 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2023-11-06 23:03:10,350 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 102 transitions, 506 flow [2023-11-06 23:03:10,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 256.46153846153845) internal successors, (3334), 13 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states 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 23:03:10,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:10,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:10,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:03:10,352 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:10,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:10,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1242694935, now seen corresponding path program 1 times [2023-11-06 23:03:10,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:10,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029483951] [2023-11-06 23:03:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:10,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:11,299 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 23:03:11,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:11,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029483951] [2023-11-06 23:03:11,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029483951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:11,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:11,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 23:03:11,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548169034] [2023-11-06 23:03:11,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:11,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:03:11,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:11,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:03:11,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:03:12,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 23:03:12,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 102 transitions, 506 flow. Second operand has 14 states, 14 states have (on average 256.42857142857144) internal successors, (3590), 14 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states 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 23:03:12,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:12,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 23:03:12,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:14,735 INFO L124 PetriNetUnfolderBase]: 4941/8510 cut-off events. [2023-11-06 23:03:14,735 INFO L125 PetriNetUnfolderBase]: For 4524/4524 co-relation queries the response was YES. [2023-11-06 23:03:14,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21990 conditions, 8510 events. 4941/8510 cut-off events. For 4524/4524 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 48896 event pairs, 1920 based on Foata normal form. 0/6904 useless extension candidates. Maximal degree in co-relation 17457. Up to 6681 conditions per place. [2023-11-06 23:03:14,828 INFO L140 encePairwiseOnDemand]: 604/620 looper letters, 165 selfloop transitions, 38 changer transitions 3/213 dead transitions. [2023-11-06 23:03:14,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 213 transitions, 1414 flow [2023-11-06 23:03:14,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 23:03:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 23:03:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3477 transitions. [2023-11-06 23:03:14,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4313895781637717 [2023-11-06 23:03:14,844 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3477 transitions. [2023-11-06 23:03:14,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3477 transitions. [2023-11-06 23:03:14,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:14,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3477 transitions. [2023-11-06 23:03:14,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 267.46153846153845) internal successors, (3477), 13 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states 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 23:03:14,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:14,875 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:14,876 INFO L175 Difference]: Start difference. First operand has 122 places, 102 transitions, 506 flow. Second operand 13 states and 3477 transitions. [2023-11-06 23:03:14,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 213 transitions, 1414 flow [2023-11-06 23:03:14,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 213 transitions, 1366 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-06 23:03:14,904 INFO L231 Difference]: Finished difference. Result has 131 places, 113 transitions, 658 flow [2023-11-06 23:03:14,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=658, PETRI_PLACES=131, PETRI_TRANSITIONS=113} [2023-11-06 23:03:14,905 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 54 predicate places. [2023-11-06 23:03:14,905 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 113 transitions, 658 flow [2023-11-06 23:03:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 256.42857142857144) internal successors, (3590), 14 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states 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 23:03:14,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:14,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:03:14,908 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:14,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1411492448, now seen corresponding path program 1 times [2023-11-06 23:03:14,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:14,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579525566] [2023-11-06 23:03:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:14,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:15,959 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 23:03:15,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:15,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579525566] [2023-11-06 23:03:15,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579525566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:15,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:15,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 23:03:15,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873479205] [2023-11-06 23:03:15,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:15,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:03:15,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:15,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:03:15,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:03:17,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 620 [2023-11-06 23:03:17,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 113 transitions, 658 flow. Second operand has 14 states, 14 states have (on average 252.42857142857142) internal successors, (3534), 14 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 23:03:17,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:17,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 620 [2023-11-06 23:03:17,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:19,762 INFO L124 PetriNetUnfolderBase]: 4952/8590 cut-off events. [2023-11-06 23:03:19,762 INFO L125 PetriNetUnfolderBase]: For 5866/5866 co-relation queries the response was YES. [2023-11-06 23:03:19,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23436 conditions, 8590 events. 4952/8590 cut-off events. For 5866/5866 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 50097 event pairs, 1815 based on Foata normal form. 0/6986 useless extension candidates. Maximal degree in co-relation 18284. Up to 6544 conditions per place. [2023-11-06 23:03:19,877 INFO L140 encePairwiseOnDemand]: 602/620 looper letters, 179 selfloop transitions, 41 changer transitions 3/230 dead transitions. [2023-11-06 23:03:19,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 230 transitions, 1584 flow [2023-11-06 23:03:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 23:03:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 23:03:19,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3441 transitions. [2023-11-06 23:03:19,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2023-11-06 23:03:19,886 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3441 transitions. [2023-11-06 23:03:19,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3441 transitions. [2023-11-06 23:03:19,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:19,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3441 transitions. [2023-11-06 23:03:19,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 264.6923076923077) internal successors, (3441), 13 states have internal predecessors, (3441), 0 states have call successors, (0), 0 states 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 23:03:19,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:19,906 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:19,907 INFO L175 Difference]: Start difference. First operand has 131 places, 113 transitions, 658 flow. Second operand 13 states and 3441 transitions. [2023-11-06 23:03:19,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 230 transitions, 1584 flow [2023-11-06 23:03:19,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 230 transitions, 1542 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-06 23:03:19,945 INFO L231 Difference]: Finished difference. Result has 140 places, 115 transitions, 715 flow [2023-11-06 23:03:19,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=715, PETRI_PLACES=140, PETRI_TRANSITIONS=115} [2023-11-06 23:03:19,946 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 63 predicate places. [2023-11-06 23:03:19,947 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 115 transitions, 715 flow [2023-11-06 23:03:19,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 252.42857142857142) internal successors, (3534), 14 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 23:03:19,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:19,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:19,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:03:19,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:19,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash 503330274, now seen corresponding path program 2 times [2023-11-06 23:03:19,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:19,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170720977] [2023-11-06 23:03:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:21,002 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 23:03:21,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:21,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170720977] [2023-11-06 23:03:21,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170720977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:21,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:21,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 23:03:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640820012] [2023-11-06 23:03:21,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:21,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:03:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:03:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:03:22,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 620 [2023-11-06 23:03:22,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 115 transitions, 715 flow. Second operand has 14 states, 14 states have (on average 252.42857142857142) internal successors, (3534), 14 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 23:03:22,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:22,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 620 [2023-11-06 23:03:22,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:25,000 INFO L124 PetriNetUnfolderBase]: 5427/9412 cut-off events. [2023-11-06 23:03:25,000 INFO L125 PetriNetUnfolderBase]: For 6497/6497 co-relation queries the response was YES. [2023-11-06 23:03:25,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25703 conditions, 9412 events. 5427/9412 cut-off events. For 6497/6497 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 55804 event pairs, 1736 based on Foata normal form. 0/7858 useless extension candidates. Maximal degree in co-relation 18097. Up to 6706 conditions per place. [2023-11-06 23:03:25,084 INFO L140 encePairwiseOnDemand]: 605/620 looper letters, 162 selfloop transitions, 42 changer transitions 3/214 dead transitions. [2023-11-06 23:03:25,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 214 transitions, 1567 flow [2023-11-06 23:03:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:03:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:03:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3164 transitions. [2023-11-06 23:03:25,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252688172043011 [2023-11-06 23:03:25,094 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3164 transitions. [2023-11-06 23:03:25,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3164 transitions. [2023-11-06 23:03:25,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:25,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3164 transitions. [2023-11-06 23:03:25,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 263.6666666666667) internal successors, (3164), 12 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states 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 23:03:25,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 23:03:25,110 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 23:03:25,110 INFO L175 Difference]: Start difference. First operand has 140 places, 115 transitions, 715 flow. Second operand 12 states and 3164 transitions. [2023-11-06 23:03:25,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 214 transitions, 1567 flow [2023-11-06 23:03:25,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 214 transitions, 1507 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-11-06 23:03:25,145 INFO L231 Difference]: Finished difference. Result has 146 places, 122 transitions, 831 flow [2023-11-06 23:03:25,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=831, PETRI_PLACES=146, PETRI_TRANSITIONS=122} [2023-11-06 23:03:25,146 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 69 predicate places. [2023-11-06 23:03:25,146 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 122 transitions, 831 flow [2023-11-06 23:03:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 252.42857142857142) internal successors, (3534), 14 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states 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 23:03:25,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:25,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:25,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 23:03:25,148 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:25,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1104958939, now seen corresponding path program 2 times [2023-11-06 23:03:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850041819] [2023-11-06 23:03:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:26,124 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 23:03:26,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:26,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850041819] [2023-11-06 23:03:26,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850041819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:26,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:26,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 23:03:26,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566209775] [2023-11-06 23:03:26,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:26,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:03:26,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:26,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:03:26,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:03:27,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 23:03:27,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 122 transitions, 831 flow. Second operand has 14 states, 14 states have (on average 256.42857142857144) internal successors, (3590), 14 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states 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 23:03:27,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:27,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 23:03:27,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:29,572 INFO L124 PetriNetUnfolderBase]: 5389/9340 cut-off events. [2023-11-06 23:03:29,572 INFO L125 PetriNetUnfolderBase]: For 8482/8482 co-relation queries the response was YES. [2023-11-06 23:03:29,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26690 conditions, 9340 events. 5389/9340 cut-off events. For 8482/8482 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 55211 event pairs, 1779 based on Foata normal form. 26/7814 useless extension candidates. Maximal degree in co-relation 18840. Up to 6722 conditions per place. [2023-11-06 23:03:29,669 INFO L140 encePairwiseOnDemand]: 605/620 looper letters, 168 selfloop transitions, 43 changer transitions 3/221 dead transitions. [2023-11-06 23:03:29,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 221 transitions, 1692 flow [2023-11-06 23:03:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 23:03:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 23:03:29,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3473 transitions. [2023-11-06 23:03:29,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089330024813893 [2023-11-06 23:03:29,676 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3473 transitions. [2023-11-06 23:03:29,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3473 transitions. [2023-11-06 23:03:29,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:29,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3473 transitions. [2023-11-06 23:03:29,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 267.15384615384613) internal successors, (3473), 13 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:29,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:29,695 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:29,696 INFO L175 Difference]: Start difference. First operand has 146 places, 122 transitions, 831 flow. Second operand 13 states and 3473 transitions. [2023-11-06 23:03:29,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 221 transitions, 1692 flow [2023-11-06 23:03:29,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 221 transitions, 1637 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-06 23:03:29,765 INFO L231 Difference]: Finished difference. Result has 152 places, 121 transitions, 851 flow [2023-11-06 23:03:29,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=851, PETRI_PLACES=152, PETRI_TRANSITIONS=121} [2023-11-06 23:03:29,766 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 75 predicate places. [2023-11-06 23:03:29,766 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 121 transitions, 851 flow [2023-11-06 23:03:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 256.42857142857144) internal successors, (3590), 14 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states 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 23:03:29,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:29,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 23:03:29,768 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:29,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1244478936, now seen corresponding path program 3 times [2023-11-06 23:03:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880038929] [2023-11-06 23:03:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:30,627 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 23:03:30,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:30,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880038929] [2023-11-06 23:03:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880038929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:30,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:30,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 23:03:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223052153] [2023-11-06 23:03:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:30,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:03:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:03:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:03:32,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 23:03:32,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 121 transitions, 851 flow. Second operand has 14 states, 14 states have (on average 256.42857142857144) internal successors, (3590), 14 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states 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 23:03:32,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:32,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 23:03:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:34,543 INFO L124 PetriNetUnfolderBase]: 5221/8994 cut-off events. [2023-11-06 23:03:34,543 INFO L125 PetriNetUnfolderBase]: For 7311/7311 co-relation queries the response was YES. [2023-11-06 23:03:34,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25559 conditions, 8994 events. 5221/8994 cut-off events. For 7311/7311 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 53755 event pairs, 1337 based on Foata normal form. 0/7570 useless extension candidates. Maximal degree in co-relation 17917. Up to 4501 conditions per place. [2023-11-06 23:03:34,636 INFO L140 encePairwiseOnDemand]: 604/620 looper letters, 173 selfloop transitions, 35 changer transitions 0/215 dead transitions. [2023-11-06 23:03:34,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 215 transitions, 1603 flow [2023-11-06 23:03:34,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:03:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:03:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2189 transitions. [2023-11-06 23:03:34,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44133064516129034 [2023-11-06 23:03:34,641 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2189 transitions. [2023-11-06 23:03:34,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2189 transitions. [2023-11-06 23:03:34,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:34,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2189 transitions. [2023-11-06 23:03:34,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 273.625) internal successors, (2189), 8 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states 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 23:03:34,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 620.0) internal successors, (5580), 9 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 23:03:34,653 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 620.0) internal successors, (5580), 9 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 23:03:34,653 INFO L175 Difference]: Start difference. First operand has 152 places, 121 transitions, 851 flow. Second operand 8 states and 2189 transitions. [2023-11-06 23:03:34,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 215 transitions, 1603 flow [2023-11-06 23:03:34,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 215 transitions, 1517 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-06 23:03:34,711 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 831 flow [2023-11-06 23:03:34,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=831, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2023-11-06 23:03:34,713 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 69 predicate places. [2023-11-06 23:03:34,714 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 831 flow [2023-11-06 23:03:34,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 256.42857142857144) internal successors, (3590), 14 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states 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 23:03:34,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:34,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:34,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 23:03:34,716 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:34,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash -147058639, now seen corresponding path program 3 times [2023-11-06 23:03:34,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:34,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957546257] [2023-11-06 23:03:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:34,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:35,883 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 23:03:35,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:35,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957546257] [2023-11-06 23:03:35,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957546257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:35,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:35,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 23:03:35,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120070147] [2023-11-06 23:03:35,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:35,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 23:03:35,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:35,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 23:03:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:03:37,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-11-06 23:03:37,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 831 flow. Second operand has 15 states, 15 states have (on average 256.3333333333333) internal successors, (3845), 15 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states 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 23:03:37,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:37,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-11-06 23:03:37,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:38,998 INFO L124 PetriNetUnfolderBase]: 5432/9463 cut-off events. [2023-11-06 23:03:38,998 INFO L125 PetriNetUnfolderBase]: For 9074/9074 co-relation queries the response was YES. [2023-11-06 23:03:39,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27263 conditions, 9463 events. 5432/9463 cut-off events. For 9074/9074 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 56871 event pairs, 1711 based on Foata normal form. 26/8059 useless extension candidates. Maximal degree in co-relation 19001. Up to 6036 conditions per place. [2023-11-06 23:03:39,087 INFO L140 encePairwiseOnDemand]: 605/620 looper letters, 164 selfloop transitions, 49 changer transitions 3/223 dead transitions. [2023-11-06 23:03:39,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 223 transitions, 1725 flow [2023-11-06 23:03:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 23:03:39,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 23:03:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3469 transitions. [2023-11-06 23:03:39,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303970223325062 [2023-11-06 23:03:39,095 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3469 transitions. [2023-11-06 23:03:39,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3469 transitions. [2023-11-06 23:03:39,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:39,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3469 transitions. [2023-11-06 23:03:39,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 266.84615384615387) internal successors, (3469), 13 states have internal predecessors, (3469), 0 states have call successors, (0), 0 states 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 23:03:39,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:39,113 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:39,114 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 831 flow. Second operand 13 states and 3469 transitions. [2023-11-06 23:03:39,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 223 transitions, 1725 flow [2023-11-06 23:03:39,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 223 transitions, 1651 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 23:03:39,171 INFO L231 Difference]: Finished difference. Result has 154 places, 125 transitions, 926 flow [2023-11-06 23:03:39,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=926, PETRI_PLACES=154, PETRI_TRANSITIONS=125} [2023-11-06 23:03:39,172 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 77 predicate places. [2023-11-06 23:03:39,173 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 125 transitions, 926 flow [2023-11-06 23:03:39,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 256.3333333333333) internal successors, (3845), 15 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states 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 23:03:39,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:39,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:39,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 23:03:39,174 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:39,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1244247401, now seen corresponding path program 4 times [2023-11-06 23:03:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358822981] [2023-11-06 23:03:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:40,265 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 23:03:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358822981] [2023-11-06 23:03:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358822981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 23:03:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612559320] [2023-11-06 23:03:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:03:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:03:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:03:41,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 620 [2023-11-06 23:03:41,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 125 transitions, 926 flow. Second operand has 14 states, 14 states have (on average 257.42857142857144) internal successors, (3604), 14 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states 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 23:03:41,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:41,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 620 [2023-11-06 23:03:41,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:43,482 INFO L124 PetriNetUnfolderBase]: 5437/9468 cut-off events. [2023-11-06 23:03:43,483 INFO L125 PetriNetUnfolderBase]: For 9356/9356 co-relation queries the response was YES. [2023-11-06 23:03:43,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27505 conditions, 9468 events. 5437/9468 cut-off events. For 9356/9356 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 57225 event pairs, 1712 based on Foata normal form. 26/8060 useless extension candidates. Maximal degree in co-relation 19083. Up to 5879 conditions per place. [2023-11-06 23:03:43,580 INFO L140 encePairwiseOnDemand]: 606/620 looper letters, 168 selfloop transitions, 47 changer transitions 3/225 dead transitions. [2023-11-06 23:03:43,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 225 transitions, 1812 flow [2023-11-06 23:03:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 23:03:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 23:03:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3481 transitions. [2023-11-06 23:03:43,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43188585607940444 [2023-11-06 23:03:43,590 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3481 transitions. [2023-11-06 23:03:43,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3481 transitions. [2023-11-06 23:03:43,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:43,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3481 transitions. [2023-11-06 23:03:43,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 267.7692307692308) internal successors, (3481), 13 states have internal predecessors, (3481), 0 states have call successors, (0), 0 states 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 23:03:43,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:43,607 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 620.0) internal successors, (8680), 14 states have internal predecessors, (8680), 0 states have call successors, (0), 0 states 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 23:03:43,608 INFO L175 Difference]: Start difference. First operand has 154 places, 125 transitions, 926 flow. Second operand 13 states and 3481 transitions. [2023-11-06 23:03:43,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 225 transitions, 1812 flow [2023-11-06 23:03:43,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 225 transitions, 1752 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-11-06 23:03:43,660 INFO L231 Difference]: Finished difference. Result has 161 places, 127 transitions, 998 flow [2023-11-06 23:03:43,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=998, PETRI_PLACES=161, PETRI_TRANSITIONS=127} [2023-11-06 23:03:43,661 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 84 predicate places. [2023-11-06 23:03:43,661 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 127 transitions, 998 flow [2023-11-06 23:03:43,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 257.42857142857144) internal successors, (3604), 14 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states 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 23:03:43,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:43,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 23:03:43,662 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:43,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2095632689, now seen corresponding path program 1 times [2023-11-06 23:03:43,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:43,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023952406] [2023-11-06 23:03:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:43,716 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 23:03:43,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:43,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023952406] [2023-11-06 23:03:43,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023952406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:43,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:43,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983141866] [2023-11-06 23:03:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:43,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:43,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:43,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:43,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 620 [2023-11-06 23:03:43,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 127 transitions, 998 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 23:03:43,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:43,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 620 [2023-11-06 23:03:43,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:44,998 INFO L124 PetriNetUnfolderBase]: 4768/8494 cut-off events. [2023-11-06 23:03:44,998 INFO L125 PetriNetUnfolderBase]: For 10780/10833 co-relation queries the response was YES. [2023-11-06 23:03:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25042 conditions, 8494 events. 4768/8494 cut-off events. For 10780/10833 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 51740 event pairs, 1809 based on Foata normal form. 53/7389 useless extension candidates. Maximal degree in co-relation 16934. Up to 6770 conditions per place. [2023-11-06 23:03:45,083 INFO L140 encePairwiseOnDemand]: 617/620 looper letters, 117 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2023-11-06 23:03:45,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 134 transitions, 1273 flow [2023-11-06 23:03:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:03:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 955 transitions. [2023-11-06 23:03:45,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134408602150538 [2023-11-06 23:03:45,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 955 transitions. [2023-11-06 23:03:45,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 955 transitions. [2023-11-06 23:03:45,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:45,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 955 transitions. [2023-11-06 23:03:45,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 23:03:45,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:45,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:45,089 INFO L175 Difference]: Start difference. First operand has 161 places, 127 transitions, 998 flow. Second operand 3 states and 955 transitions. [2023-11-06 23:03:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 134 transitions, 1273 flow [2023-11-06 23:03:45,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 134 transitions, 1219 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-06 23:03:45,161 INFO L231 Difference]: Finished difference. Result has 153 places, 125 transitions, 938 flow [2023-11-06 23:03:45,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=153, PETRI_TRANSITIONS=125} [2023-11-06 23:03:45,162 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 76 predicate places. [2023-11-06 23:03:45,162 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 125 transitions, 938 flow [2023-11-06 23:03:45,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 23:03:45,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:45,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:45,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 23:03:45,163 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:45,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2095632641, now seen corresponding path program 1 times [2023-11-06 23:03:45,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:45,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435298851] [2023-11-06 23:03:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:45,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:03:45,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:45,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435298851] [2023-11-06 23:03:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435298851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:45,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:45,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:03:45,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249149127] [2023-11-06 23:03:45,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:45,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:03:45,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:03:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:03:45,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 620 [2023-11-06 23:03:45,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 125 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 23:03:45,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:45,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 620 [2023-11-06 23:03:45,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:46,372 INFO L124 PetriNetUnfolderBase]: 4421/7899 cut-off events. [2023-11-06 23:03:46,372 INFO L125 PetriNetUnfolderBase]: For 9320/9373 co-relation queries the response was YES. [2023-11-06 23:03:46,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22934 conditions, 7899 events. 4421/7899 cut-off events. For 9320/9373 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 47254 event pairs, 1693 based on Foata normal form. 149/7064 useless extension candidates. Maximal degree in co-relation 15264. Up to 5193 conditions per place. [2023-11-06 23:03:46,462 INFO L140 encePairwiseOnDemand]: 615/620 looper letters, 131 selfloop transitions, 4 changer transitions 0/151 dead transitions. [2023-11-06 23:03:46,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 151 transitions, 1299 flow [2023-11-06 23:03:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:03:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:03:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 968 transitions. [2023-11-06 23:03:46,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204301075268817 [2023-11-06 23:03:46,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 968 transitions. [2023-11-06 23:03:46,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 968 transitions. [2023-11-06 23:03:46,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:46,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 968 transitions. [2023-11-06 23:03:46,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 23:03:46,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:46,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:03:46,472 INFO L175 Difference]: Start difference. First operand has 153 places, 125 transitions, 938 flow. Second operand 3 states and 968 transitions. [2023-11-06 23:03:46,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 151 transitions, 1299 flow [2023-11-06 23:03:46,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 151 transitions, 1298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:03:46,551 INFO L231 Difference]: Finished difference. Result has 153 places, 124 transitions, 945 flow [2023-11-06 23:03:46,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=945, PETRI_PLACES=153, PETRI_TRANSITIONS=124} [2023-11-06 23:03:46,552 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 76 predicate places. [2023-11-06 23:03:46,552 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 124 transitions, 945 flow [2023-11-06 23:03:46,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 3 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 23:03:46,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:46,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:46,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 23:03:46,553 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:46,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1720333673, now seen corresponding path program 1 times [2023-11-06 23:03:46,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:46,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337479120] [2023-11-06 23:03:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:46,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:47,065 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 23:03:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:47,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337479120] [2023-11-06 23:03:47,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337479120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:47,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:47,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:03:47,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781622923] [2023-11-06 23:03:47,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:47,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:03:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:03:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:03:48,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 620 [2023-11-06 23:03:48,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 124 transitions, 945 flow. Second operand has 10 states, 10 states have (on average 269.2) internal successors, (2692), 10 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states 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 23:03:48,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:48,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 620 [2023-11-06 23:03:48,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:51,108 INFO L124 PetriNetUnfolderBase]: 8729/15244 cut-off events. [2023-11-06 23:03:51,108 INFO L125 PetriNetUnfolderBase]: For 14346/14346 co-relation queries the response was YES. [2023-11-06 23:03:51,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42022 conditions, 15244 events. 8729/15244 cut-off events. For 14346/14346 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 103803 event pairs, 1803 based on Foata normal form. 0/13157 useless extension candidates. Maximal degree in co-relation 26258. Up to 3390 conditions per place. [2023-11-06 23:03:51,290 INFO L140 encePairwiseOnDemand]: 603/620 looper letters, 266 selfloop transitions, 52 changer transitions 0/325 dead transitions. [2023-11-06 23:03:51,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 325 transitions, 2264 flow [2023-11-06 23:03:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:03:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:03:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3188 transitions. [2023-11-06 23:03:51,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674486803519062 [2023-11-06 23:03:51,297 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3188 transitions. [2023-11-06 23:03:51,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3188 transitions. [2023-11-06 23:03:51,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:51,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3188 transitions. [2023-11-06 23:03:51,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 289.8181818181818) internal successors, (3188), 11 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states 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 23:03:51,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 620.0) internal successors, (7440), 12 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states 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 23:03:51,308 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 620.0) internal successors, (7440), 12 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states 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 23:03:51,308 INFO L175 Difference]: Start difference. First operand has 153 places, 124 transitions, 945 flow. Second operand 11 states and 3188 transitions. [2023-11-06 23:03:51,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 325 transitions, 2264 flow [2023-11-06 23:03:51,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 325 transitions, 2252 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:03:51,393 INFO L231 Difference]: Finished difference. Result has 166 places, 137 transitions, 1179 flow [2023-11-06 23:03:51,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1179, PETRI_PLACES=166, PETRI_TRANSITIONS=137} [2023-11-06 23:03:51,394 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 89 predicate places. [2023-11-06 23:03:51,394 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 137 transitions, 1179 flow [2023-11-06 23:03:51,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 269.2) internal successors, (2692), 10 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states 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 23:03:51,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:51,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:51,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 23:03:51,395 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:51,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1720333674, now seen corresponding path program 1 times [2023-11-06 23:03:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:51,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618407834] [2023-11-06 23:03:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:51,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:52,123 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 23:03:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:52,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618407834] [2023-11-06 23:03:52,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618407834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:52,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:52,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:03:52,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778983106] [2023-11-06 23:03:52,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:52,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:03:52,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:52,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:03:52,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:03:52,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 620 [2023-11-06 23:03:52,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 137 transitions, 1179 flow. Second operand has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states 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 23:03:52,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:52,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 620 [2023-11-06 23:03:52,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:03:55,732 INFO L124 PetriNetUnfolderBase]: 9313/16416 cut-off events. [2023-11-06 23:03:55,732 INFO L125 PetriNetUnfolderBase]: For 21220/21220 co-relation queries the response was YES. [2023-11-06 23:03:55,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48767 conditions, 16416 events. 9313/16416 cut-off events. For 21220/21220 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 111976 event pairs, 6901 based on Foata normal form. 56/15242 useless extension candidates. Maximal degree in co-relation 47548. Up to 14204 conditions per place. [2023-11-06 23:03:55,944 INFO L140 encePairwiseOnDemand]: 606/620 looper letters, 161 selfloop transitions, 30 changer transitions 3/201 dead transitions. [2023-11-06 23:03:55,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 201 transitions, 1934 flow [2023-11-06 23:03:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:03:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:03:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3330 transitions. [2023-11-06 23:03:55,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2023-11-06 23:03:55,948 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3330 transitions. [2023-11-06 23:03:55,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3330 transitions. [2023-11-06 23:03:55,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:03:55,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3330 transitions. [2023-11-06 23:03:55,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 277.5) internal successors, (3330), 12 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states 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 23:03:55,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 23:03:55,967 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states 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 23:03:55,967 INFO L175 Difference]: Start difference. First operand has 166 places, 137 transitions, 1179 flow. Second operand 12 states and 3330 transitions. [2023-11-06 23:03:55,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 201 transitions, 1934 flow [2023-11-06 23:03:56,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 201 transitions, 1894 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-06 23:03:56,113 INFO L231 Difference]: Finished difference. Result has 177 places, 144 transitions, 1342 flow [2023-11-06 23:03:56,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1342, PETRI_PLACES=177, PETRI_TRANSITIONS=144} [2023-11-06 23:03:56,114 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 100 predicate places. [2023-11-06 23:03:56,114 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 144 transitions, 1342 flow [2023-11-06 23:03:56,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 269.0) internal successors, (2959), 11 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states 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 23:03:56,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:03:56,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:56,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 23:03:56,115 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:03:56,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash 624372427, now seen corresponding path program 1 times [2023-11-06 23:03:56,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:56,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241277208] [2023-11-06 23:03:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:56,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:56,945 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 23:03:56,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:56,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241277208] [2023-11-06 23:03:56,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241277208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:56,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:56,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 23:03:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68577091] [2023-11-06 23:03:56,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:56,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:03:56,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:03:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:03:57,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 620 [2023-11-06 23:03:57,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 144 transitions, 1342 flow. Second operand has 12 states, 12 states have (on average 260.9166666666667) internal successors, (3131), 12 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states 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 23:03:57,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:03:57,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 620 [2023-11-06 23:03:57,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:00,429 INFO L124 PetriNetUnfolderBase]: 9262/16317 cut-off events. [2023-11-06 23:04:00,429 INFO L125 PetriNetUnfolderBase]: For 22229/22229 co-relation queries the response was YES. [2023-11-06 23:04:00,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49035 conditions, 16317 events. 9262/16317 cut-off events. For 22229/22229 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 110925 event pairs, 5280 based on Foata normal form. 52/15145 useless extension candidates. Maximal degree in co-relation 47762. Up to 11750 conditions per place. [2023-11-06 23:04:00,660 INFO L140 encePairwiseOnDemand]: 603/620 looper letters, 193 selfloop transitions, 45 changer transitions 3/248 dead transitions. [2023-11-06 23:04:00,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 248 transitions, 2259 flow [2023-11-06 23:04:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:04:00,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:04:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3007 transitions. [2023-11-06 23:04:00,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2023-11-06 23:04:00,666 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3007 transitions. [2023-11-06 23:04:00,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3007 transitions. [2023-11-06 23:04:00,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:00,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3007 transitions. [2023-11-06 23:04:00,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.3636363636364) internal successors, (3007), 11 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states 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 23:04:00,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 620.0) internal successors, (7440), 12 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states 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 23:04:00,680 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 620.0) internal successors, (7440), 12 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states 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 23:04:00,680 INFO L175 Difference]: Start difference. First operand has 177 places, 144 transitions, 1342 flow. Second operand 11 states and 3007 transitions. [2023-11-06 23:04:00,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 248 transitions, 2259 flow [2023-11-06 23:04:00,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 248 transitions, 2212 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-06 23:04:00,848 INFO L231 Difference]: Finished difference. Result has 181 places, 147 transitions, 1421 flow [2023-11-06 23:04:00,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1421, PETRI_PLACES=181, PETRI_TRANSITIONS=147} [2023-11-06 23:04:00,849 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 104 predicate places. [2023-11-06 23:04:00,849 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 147 transitions, 1421 flow [2023-11-06 23:04:00,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 260.9166666666667) internal successors, (3131), 12 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states 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 23:04:00,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:00,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:00,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 23:04:00,850 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:00,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:00,851 INFO L85 PathProgramCache]: Analyzing trace with hash 116252285, now seen corresponding path program 2 times [2023-11-06 23:04:00,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:00,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874913100] [2023-11-06 23:04:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:00,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:01,683 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 23:04:01,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:01,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874913100] [2023-11-06 23:04:01,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874913100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:01,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:01,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:04:01,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968581194] [2023-11-06 23:04:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:01,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:04:01,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:04:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:04:02,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 620 [2023-11-06 23:04:02,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 147 transitions, 1421 flow. Second operand has 13 states, 13 states have (on average 260.7692307692308) internal successors, (3390), 13 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states 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 23:04:02,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:02,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 620 [2023-11-06 23:04:02,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:06,826 INFO L124 PetriNetUnfolderBase]: 10645/18667 cut-off events. [2023-11-06 23:04:06,826 INFO L125 PetriNetUnfolderBase]: For 28279/28279 co-relation queries the response was YES. [2023-11-06 23:04:07,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57305 conditions, 18667 events. 10645/18667 cut-off events. For 28279/28279 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 129308 event pairs, 4373 based on Foata normal form. 126/17443 useless extension candidates. Maximal degree in co-relation 50251. Up to 11462 conditions per place. [2023-11-06 23:04:07,158 INFO L140 encePairwiseOnDemand]: 603/620 looper letters, 202 selfloop transitions, 53 changer transitions 0/262 dead transitions. [2023-11-06 23:04:07,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 262 transitions, 2436 flow [2023-11-06 23:04:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:04:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 23:04:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2754 transitions. [2023-11-06 23:04:07,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441935483870968 [2023-11-06 23:04:07,164 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2754 transitions. [2023-11-06 23:04:07,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2754 transitions. [2023-11-06 23:04:07,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:07,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2754 transitions. [2023-11-06 23:04:07,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 275.4) internal successors, (2754), 10 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states 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 23:04:07,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 620.0) internal successors, (6820), 11 states have internal predecessors, (6820), 0 states have call successors, (0), 0 states 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 23:04:07,178 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 620.0) internal successors, (6820), 11 states have internal predecessors, (6820), 0 states have call successors, (0), 0 states 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 23:04:07,179 INFO L175 Difference]: Start difference. First operand has 181 places, 147 transitions, 1421 flow. Second operand 10 states and 2754 transitions. [2023-11-06 23:04:07,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 262 transitions, 2436 flow [2023-11-06 23:04:07,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 262 transitions, 2369 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-06 23:04:07,377 INFO L231 Difference]: Finished difference. Result has 185 places, 158 transitions, 1621 flow [2023-11-06 23:04:07,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1621, PETRI_PLACES=185, PETRI_TRANSITIONS=158} [2023-11-06 23:04:07,378 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 108 predicate places. [2023-11-06 23:04:07,378 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 158 transitions, 1621 flow [2023-11-06 23:04:07,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 260.7692307692308) internal successors, (3390), 13 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states 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 23:04:07,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:07,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:07,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 23:04:07,380 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:07,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:07,380 INFO L85 PathProgramCache]: Analyzing trace with hash -156346234, now seen corresponding path program 1 times [2023-11-06 23:04:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:07,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722309139] [2023-11-06 23:04:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:07,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:08,205 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 23:04:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722309139] [2023-11-06 23:04:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722309139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:08,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:08,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 23:04:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950674803] [2023-11-06 23:04:08,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:08,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:04:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:04:08,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:04:09,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 620 [2023-11-06 23:04:09,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 158 transitions, 1621 flow. Second operand has 13 states, 13 states have (on average 260.7692307692308) internal successors, (3390), 13 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states 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 23:04:09,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:09,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 620 [2023-11-06 23:04:09,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:13,621 INFO L124 PetriNetUnfolderBase]: 10762/18976 cut-off events. [2023-11-06 23:04:13,621 INFO L125 PetriNetUnfolderBase]: For 36324/36332 co-relation queries the response was YES. [2023-11-06 23:04:13,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60237 conditions, 18976 events. 10762/18976 cut-off events. For 36324/36332 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 132859 event pairs, 4534 based on Foata normal form. 26/17604 useless extension candidates. Maximal degree in co-relation 52997. Up to 12592 conditions per place. [2023-11-06 23:04:13,963 INFO L140 encePairwiseOnDemand]: 602/620 looper letters, 195 selfloop transitions, 56 changer transitions 3/261 dead transitions. [2023-11-06 23:04:13,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 261 transitions, 2572 flow [2023-11-06 23:04:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:04:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:04:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3004 transitions. [2023-11-06 23:04:13,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404692082111437 [2023-11-06 23:04:13,969 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3004 transitions. [2023-11-06 23:04:13,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3004 transitions. [2023-11-06 23:04:13,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:13,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3004 transitions. [2023-11-06 23:04:13,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.09090909090907) internal successors, (3004), 11 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states 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 23:04:13,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 620.0) internal successors, (7440), 12 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states 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 23:04:13,983 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 620.0) internal successors, (7440), 12 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states 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 23:04:13,983 INFO L175 Difference]: Start difference. First operand has 185 places, 158 transitions, 1621 flow. Second operand 11 states and 3004 transitions. [2023-11-06 23:04:13,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 261 transitions, 2572 flow [2023-11-06 23:04:14,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 261 transitions, 2531 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-06 23:04:14,376 INFO L231 Difference]: Finished difference. Result has 191 places, 163 transitions, 1759 flow [2023-11-06 23:04:14,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1759, PETRI_PLACES=191, PETRI_TRANSITIONS=163} [2023-11-06 23:04:14,377 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 114 predicate places. [2023-11-06 23:04:14,377 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 163 transitions, 1759 flow [2023-11-06 23:04:14,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 260.7692307692308) internal successors, (3390), 13 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states 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 23:04:14,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:14,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:14,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 23:04:14,379 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:14,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:14,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1790737567, now seen corresponding path program 3 times [2023-11-06 23:04:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:14,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731291080] [2023-11-06 23:04:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:14,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:15,416 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 23:04:15,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:15,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731291080] [2023-11-06 23:04:15,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731291080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:15,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:15,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 23:04:15,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466847071] [2023-11-06 23:04:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:15,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:04:15,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:15,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:04:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:04:16,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 620 [2023-11-06 23:04:16,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 163 transitions, 1759 flow. Second operand has 12 states, 12 states have (on average 265.9166666666667) internal successors, (3191), 12 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states 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 23:04:16,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:16,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 620 [2023-11-06 23:04:16,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:20,639 INFO L124 PetriNetUnfolderBase]: 9770/17337 cut-off events. [2023-11-06 23:04:20,639 INFO L125 PetriNetUnfolderBase]: For 41374/41374 co-relation queries the response was YES. [2023-11-06 23:04:20,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56688 conditions, 17337 events. 9770/17337 cut-off events. For 41374/41374 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 119539 event pairs, 4403 based on Foata normal form. 104/16172 useless extension candidates. Maximal degree in co-relation 49186. Up to 11265 conditions per place. [2023-11-06 23:04:20,931 INFO L140 encePairwiseOnDemand]: 607/620 looper letters, 186 selfloop transitions, 44 changer transitions 3/240 dead transitions. [2023-11-06 23:04:20,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 240 transitions, 2536 flow [2023-11-06 23:04:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:04:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 23:04:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3042 transitions. [2023-11-06 23:04:20,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460410557184751 [2023-11-06 23:04:20,936 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3042 transitions. [2023-11-06 23:04:20,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3042 transitions. [2023-11-06 23:04:20,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:20,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3042 transitions. [2023-11-06 23:04:20,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 276.54545454545456) internal successors, (3042), 11 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states 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 23:04:20,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 620.0) internal successors, (7440), 12 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states 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 23:04:20,949 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 620.0) internal successors, (7440), 12 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states 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 23:04:20,949 INFO L175 Difference]: Start difference. First operand has 191 places, 163 transitions, 1759 flow. Second operand 11 states and 3042 transitions. [2023-11-06 23:04:20,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 240 transitions, 2536 flow [2023-11-06 23:04:21,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 240 transitions, 2448 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-06 23:04:21,200 INFO L231 Difference]: Finished difference. Result has 193 places, 156 transitions, 1705 flow [2023-11-06 23:04:21,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1705, PETRI_PLACES=193, PETRI_TRANSITIONS=156} [2023-11-06 23:04:21,201 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 116 predicate places. [2023-11-06 23:04:21,201 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 156 transitions, 1705 flow [2023-11-06 23:04:21,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 265.9166666666667) internal successors, (3191), 12 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states 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 23:04:21,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:21,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 23:04:21,203 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:21,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1807485006, now seen corresponding path program 2 times [2023-11-06 23:04:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:21,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388806315] [2023-11-06 23:04:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:22,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:22,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388806315] [2023-11-06 23:04:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388806315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:22,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:22,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 23:04:22,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179854149] [2023-11-06 23:04:22,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:22,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:04:22,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:22,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:04:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:04:23,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 620 [2023-11-06 23:04:23,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 156 transitions, 1705 flow. Second operand has 12 states, 12 states have (on average 261.9166666666667) internal successors, (3143), 12 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 23:04:23,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:23,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 620 [2023-11-06 23:04:23,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:27,261 INFO L124 PetriNetUnfolderBase]: 9694/17201 cut-off events. [2023-11-06 23:04:27,261 INFO L125 PetriNetUnfolderBase]: For 43474/43474 co-relation queries the response was YES. [2023-11-06 23:04:27,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56678 conditions, 17201 events. 9694/17201 cut-off events. For 43474/43474 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 118343 event pairs, 4369 based on Foata normal form. 52/15984 useless extension candidates. Maximal degree in co-relation 49174. Up to 11265 conditions per place. [2023-11-06 23:04:27,569 INFO L140 encePairwiseOnDemand]: 609/620 looper letters, 180 selfloop transitions, 41 changer transitions 3/231 dead transitions. [2023-11-06 23:04:27,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 231 transitions, 2489 flow [2023-11-06 23:04:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:04:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 23:04:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2729 transitions. [2023-11-06 23:04:27,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44016129032258067 [2023-11-06 23:04:27,574 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2729 transitions. [2023-11-06 23:04:27,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2729 transitions. [2023-11-06 23:04:27,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:27,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2729 transitions. [2023-11-06 23:04:27,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 272.9) internal successors, (2729), 10 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states 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 23:04:27,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 620.0) internal successors, (6820), 11 states have internal predecessors, (6820), 0 states have call successors, (0), 0 states 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 23:04:27,586 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 620.0) internal successors, (6820), 11 states have internal predecessors, (6820), 0 states have call successors, (0), 0 states 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 23:04:27,586 INFO L175 Difference]: Start difference. First operand has 193 places, 156 transitions, 1705 flow. Second operand 10 states and 2729 transitions. [2023-11-06 23:04:27,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 231 transitions, 2489 flow [2023-11-06 23:04:27,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 231 transitions, 2412 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-06 23:04:27,837 INFO L231 Difference]: Finished difference. Result has 194 places, 156 transitions, 1723 flow [2023-11-06 23:04:27,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1723, PETRI_PLACES=194, PETRI_TRANSITIONS=156} [2023-11-06 23:04:27,838 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 117 predicate places. [2023-11-06 23:04:27,838 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 156 transitions, 1723 flow [2023-11-06 23:04:27,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 261.9166666666667) internal successors, (3143), 12 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states 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 23:04:27,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:27,839 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:27,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-06 23:04:27,839 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:27,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:27,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1660153072, now seen corresponding path program 1 times [2023-11-06 23:04:27,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:27,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868144378] [2023-11-06 23:04:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:27,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:27,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868144378] [2023-11-06 23:04:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868144378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:27,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819708039] [2023-11-06 23:04:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:27,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:27,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 620 [2023-11-06 23:04:27,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 156 transitions, 1723 flow. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states 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 23:04:27,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:27,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 620 [2023-11-06 23:04:27,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:30,080 INFO L124 PetriNetUnfolderBase]: 5527/9948 cut-off events. [2023-11-06 23:04:30,080 INFO L125 PetriNetUnfolderBase]: For 32863/32916 co-relation queries the response was YES. [2023-11-06 23:04:30,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35058 conditions, 9948 events. 5527/9948 cut-off events. For 32863/32916 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 63516 event pairs, 3373 based on Foata normal form. 293/9765 useless extension candidates. Maximal degree in co-relation 27767. Up to 5621 conditions per place. [2023-11-06 23:04:30,235 INFO L140 encePairwiseOnDemand]: 617/620 looper letters, 141 selfloop transitions, 2 changer transitions 2/158 dead transitions. [2023-11-06 23:04:30,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 158 transitions, 1965 flow [2023-11-06 23:04:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:04:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2023-11-06 23:04:30,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177419354838709 [2023-11-06 23:04:30,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 963 transitions. [2023-11-06 23:04:30,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 963 transitions. [2023-11-06 23:04:30,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:30,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 963 transitions. [2023-11-06 23:04:30,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states 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 23:04:30,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:30,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:30,244 INFO L175 Difference]: Start difference. First operand has 194 places, 156 transitions, 1723 flow. Second operand 3 states and 963 transitions. [2023-11-06 23:04:30,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 158 transitions, 1965 flow [2023-11-06 23:04:30,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 158 transitions, 1837 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-11-06 23:04:30,590 INFO L231 Difference]: Finished difference. Result has 185 places, 141 transitions, 1483 flow [2023-11-06 23:04:30,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1483, PETRI_PLACES=185, PETRI_TRANSITIONS=141} [2023-11-06 23:04:30,591 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 108 predicate places. [2023-11-06 23:04:30,591 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 141 transitions, 1483 flow [2023-11-06 23:04:30,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states 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 23:04:30,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:30,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:30,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-06 23:04:30,592 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:30,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:30,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1144953815, now seen corresponding path program 1 times [2023-11-06 23:04:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:30,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231115978] [2023-11-06 23:04:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:30,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:30,683 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 23:04:30,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231115978] [2023-11-06 23:04:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231115978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:30,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:30,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865406547] [2023-11-06 23:04:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:30,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:04:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:04:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:04:30,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 620 [2023-11-06 23:04:30,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 141 transitions, 1483 flow. Second operand has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 23:04:30,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:30,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 620 [2023-11-06 23:04:30,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:32,302 INFO L124 PetriNetUnfolderBase]: 4191/7912 cut-off events. [2023-11-06 23:04:32,302 INFO L125 PetriNetUnfolderBase]: For 23277/23289 co-relation queries the response was YES. [2023-11-06 23:04:32,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27493 conditions, 7912 events. 4191/7912 cut-off events. For 23277/23289 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49499 event pairs, 969 based on Foata normal form. 720/8328 useless extension candidates. Maximal degree in co-relation 21145. Up to 5804 conditions per place. [2023-11-06 23:04:32,438 INFO L140 encePairwiseOnDemand]: 614/620 looper letters, 132 selfloop transitions, 9 changer transitions 0/154 dead transitions. [2023-11-06 23:04:32,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 154 transitions, 1838 flow [2023-11-06 23:04:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:04:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:04:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 952 transitions. [2023-11-06 23:04:32,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118279569892473 [2023-11-06 23:04:32,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 952 transitions. [2023-11-06 23:04:32,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 952 transitions. [2023-11-06 23:04:32,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:32,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 952 transitions. [2023-11-06 23:04:32,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:32,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:32,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:32,444 INFO L175 Difference]: Start difference. First operand has 185 places, 141 transitions, 1483 flow. Second operand 3 states and 952 transitions. [2023-11-06 23:04:32,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 154 transitions, 1838 flow [2023-11-06 23:04:32,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 154 transitions, 1830 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 23:04:32,717 INFO L231 Difference]: Finished difference. Result has 184 places, 141 transitions, 1495 flow [2023-11-06 23:04:32,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1495, PETRI_PLACES=184, PETRI_TRANSITIONS=141} [2023-11-06 23:04:32,718 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2023-11-06 23:04:32,718 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 141 transitions, 1495 flow [2023-11-06 23:04:32,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 304.0) internal successors, (912), 3 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 23:04:32,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:32,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:32,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-06 23:04:32,719 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:32,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:32,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1564058558, now seen corresponding path program 1 times [2023-11-06 23:04:32,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:32,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269205537] [2023-11-06 23:04:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:32,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:33,071 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 23:04:33,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:33,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269205537] [2023-11-06 23:04:33,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269205537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:33,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:33,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:04:33,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974897319] [2023-11-06 23:04:33,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:33,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:04:33,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:04:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:04:33,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 620 [2023-11-06 23:04:33,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 141 transitions, 1495 flow. Second operand has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states 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 23:04:33,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:33,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 620 [2023-11-06 23:04:33,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:35,470 INFO L124 PetriNetUnfolderBase]: 4573/8731 cut-off events. [2023-11-06 23:04:35,470 INFO L125 PetriNetUnfolderBase]: For 22859/22880 co-relation queries the response was YES. [2023-11-06 23:04:35,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30296 conditions, 8731 events. 4573/8731 cut-off events. For 22859/22880 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 56770 event pairs, 1177 based on Foata normal form. 7/8367 useless extension candidates. Maximal degree in co-relation 23866. Up to 2595 conditions per place. [2023-11-06 23:04:35,590 INFO L140 encePairwiseOnDemand]: 598/620 looper letters, 140 selfloop transitions, 70 changer transitions 0/216 dead transitions. [2023-11-06 23:04:35,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 216 transitions, 2240 flow [2023-11-06 23:04:35,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:04:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 23:04:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2815 transitions. [2023-11-06 23:04:35,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45403225806451614 [2023-11-06 23:04:35,595 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2815 transitions. [2023-11-06 23:04:35,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2815 transitions. [2023-11-06 23:04:35,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:35,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2815 transitions. [2023-11-06 23:04:35,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 281.5) internal successors, (2815), 10 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states 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 23:04:35,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 620.0) internal successors, (6820), 11 states have internal predecessors, (6820), 0 states have call successors, (0), 0 states 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 23:04:35,601 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 620.0) internal successors, (6820), 11 states have internal predecessors, (6820), 0 states have call successors, (0), 0 states 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 23:04:35,601 INFO L175 Difference]: Start difference. First operand has 184 places, 141 transitions, 1495 flow. Second operand 10 states and 2815 transitions. [2023-11-06 23:04:35,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 216 transitions, 2240 flow [2023-11-06 23:04:35,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 216 transitions, 2226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:04:35,791 INFO L231 Difference]: Finished difference. Result has 197 places, 151 transitions, 1776 flow [2023-11-06 23:04:35,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1776, PETRI_PLACES=197, PETRI_TRANSITIONS=151} [2023-11-06 23:04:35,791 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 120 predicate places. [2023-11-06 23:04:35,792 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 151 transitions, 1776 flow [2023-11-06 23:04:35,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states 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 23:04:35,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:35,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-06 23:04:35,793 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:35,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash 652144937, now seen corresponding path program 1 times [2023-11-06 23:04:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730727046] [2023-11-06 23:04:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:36,839 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 23:04:36,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730727046] [2023-11-06 23:04:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730727046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 23:04:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271460428] [2023-11-06 23:04:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:36,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 23:04:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 23:04:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:04:38,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 620 [2023-11-06 23:04:38,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 151 transitions, 1776 flow. Second operand has 15 states, 15 states have (on average 258.1333333333333) internal successors, (3872), 15 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 23:04:38,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:38,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 620 [2023-11-06 23:04:38,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:41,996 INFO L124 PetriNetUnfolderBase]: 5887/11246 cut-off events. [2023-11-06 23:04:41,996 INFO L125 PetriNetUnfolderBase]: For 33716/33755 co-relation queries the response was YES. [2023-11-06 23:04:42,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39899 conditions, 11246 events. 5887/11246 cut-off events. For 33716/33755 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 77880 event pairs, 1776 based on Foata normal form. 53/10979 useless extension candidates. Maximal degree in co-relation 31676. Up to 3211 conditions per place. [2023-11-06 23:04:42,148 INFO L140 encePairwiseOnDemand]: 596/620 looper letters, 249 selfloop transitions, 104 changer transitions 0/359 dead transitions. [2023-11-06 23:04:42,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 359 transitions, 3542 flow [2023-11-06 23:04:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 23:04:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-06 23:04:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6158 transitions. [2023-11-06 23:04:42,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43183730715287516 [2023-11-06 23:04:42,161 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6158 transitions. [2023-11-06 23:04:42,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6158 transitions. [2023-11-06 23:04:42,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:42,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6158 transitions. [2023-11-06 23:04:42,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 267.7391304347826) internal successors, (6158), 23 states have internal predecessors, (6158), 0 states have call successors, (0), 0 states 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 23:04:42,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 620.0) internal successors, (14880), 24 states have internal predecessors, (14880), 0 states have call successors, (0), 0 states 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 23:04:42,187 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 620.0) internal successors, (14880), 24 states have internal predecessors, (14880), 0 states have call successors, (0), 0 states 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 23:04:42,187 INFO L175 Difference]: Start difference. First operand has 197 places, 151 transitions, 1776 flow. Second operand 23 states and 6158 transitions. [2023-11-06 23:04:42,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 359 transitions, 3542 flow [2023-11-06 23:04:42,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 359 transitions, 3508 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 23:04:42,540 INFO L231 Difference]: Finished difference. Result has 219 places, 175 transitions, 2281 flow [2023-11-06 23:04:42,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2281, PETRI_PLACES=219, PETRI_TRANSITIONS=175} [2023-11-06 23:04:42,541 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 142 predicate places. [2023-11-06 23:04:42,542 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 175 transitions, 2281 flow [2023-11-06 23:04:42,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 258.1333333333333) internal successors, (3872), 15 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states 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 23:04:42,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:42,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-06 23:04:42,543 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:42,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1448800463, now seen corresponding path program 2 times [2023-11-06 23:04:42,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:42,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665401217] [2023-11-06 23:04:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:42,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:44,104 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 23:04:44,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:44,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665401217] [2023-11-06 23:04:44,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665401217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:44,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:44,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 23:04:44,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451495175] [2023-11-06 23:04:44,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:44,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 23:04:44,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:44,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 23:04:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:04:47,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 620 [2023-11-06 23:04:47,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 175 transitions, 2281 flow. Second operand has 18 states, 18 states have (on average 249.77777777777777) internal successors, (4496), 18 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states 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 23:04:47,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:47,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 620 [2023-11-06 23:04:47,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:51,441 INFO L124 PetriNetUnfolderBase]: 6164/11908 cut-off events. [2023-11-06 23:04:51,441 INFO L125 PetriNetUnfolderBase]: For 40674/40698 co-relation queries the response was YES. [2023-11-06 23:04:51,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43185 conditions, 11908 events. 6164/11908 cut-off events. For 40674/40698 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 81457 event pairs, 1180 based on Foata normal form. 68/11659 useless extension candidates. Maximal degree in co-relation 42375. Up to 4357 conditions per place. [2023-11-06 23:04:51,633 INFO L140 encePairwiseOnDemand]: 600/620 looper letters, 208 selfloop transitions, 82 changer transitions 12/308 dead transitions. [2023-11-06 23:04:51,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 308 transitions, 3524 flow [2023-11-06 23:04:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 23:04:51,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 23:04:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4645 transitions. [2023-11-06 23:04:51,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621863799283154 [2023-11-06 23:04:51,641 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4645 transitions. [2023-11-06 23:04:51,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4645 transitions. [2023-11-06 23:04:51,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:51,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4645 transitions. [2023-11-06 23:04:51,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.05555555555554) internal successors, (4645), 18 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states 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 23:04:51,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 620.0) internal successors, (11780), 19 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states 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 23:04:51,660 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 620.0) internal successors, (11780), 19 states have internal predecessors, (11780), 0 states have call successors, (0), 0 states 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 23:04:51,661 INFO L175 Difference]: Start difference. First operand has 219 places, 175 transitions, 2281 flow. Second operand 18 states and 4645 transitions. [2023-11-06 23:04:51,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 308 transitions, 3524 flow [2023-11-06 23:04:52,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 308 transitions, 3411 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-11-06 23:04:52,116 INFO L231 Difference]: Finished difference. Result has 229 places, 184 transitions, 2457 flow [2023-11-06 23:04:52,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2457, PETRI_PLACES=229, PETRI_TRANSITIONS=184} [2023-11-06 23:04:52,116 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 152 predicate places. [2023-11-06 23:04:52,117 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 184 transitions, 2457 flow [2023-11-06 23:04:52,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 249.77777777777777) internal successors, (4496), 18 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states 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 23:04:52,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:52,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:52,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-06 23:04:52,118 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:52,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash -305821968, now seen corresponding path program 2 times [2023-11-06 23:04:52,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:52,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588111669] [2023-11-06 23:04:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:52,857 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 23:04:52,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:52,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588111669] [2023-11-06 23:04:52,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588111669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:52,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:52,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:04:52,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236815743] [2023-11-06 23:04:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:52,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:04:52,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:04:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:04:53,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 620 [2023-11-06 23:04:53,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 184 transitions, 2457 flow. Second operand has 11 states, 11 states have (on average 266.90909090909093) internal successors, (2936), 11 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states 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 23:04:53,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:53,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 620 [2023-11-06 23:04:53,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:56,991 INFO L124 PetriNetUnfolderBase]: 6093/11712 cut-off events. [2023-11-06 23:04:56,992 INFO L125 PetriNetUnfolderBase]: For 43648/43681 co-relation queries the response was YES. [2023-11-06 23:04:57,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43932 conditions, 11712 events. 6093/11712 cut-off events. For 43648/43681 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 79358 event pairs, 2507 based on Foata normal form. 49/11447 useless extension candidates. Maximal degree in co-relation 43049. Up to 5416 conditions per place. [2023-11-06 23:04:57,198 INFO L140 encePairwiseOnDemand]: 603/620 looper letters, 121 selfloop transitions, 79 changer transitions 0/206 dead transitions. [2023-11-06 23:04:57,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 206 transitions, 2954 flow [2023-11-06 23:04:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:04:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:04:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1928 transitions. [2023-11-06 23:04:57,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44423963133640554 [2023-11-06 23:04:57,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1928 transitions. [2023-11-06 23:04:57,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1928 transitions. [2023-11-06 23:04:57,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:57,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1928 transitions. [2023-11-06 23:04:57,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.42857142857144) internal successors, (1928), 7 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states 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 23:04:57,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states 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 23:04:57,207 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states 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 23:04:57,207 INFO L175 Difference]: Start difference. First operand has 229 places, 184 transitions, 2457 flow. Second operand 7 states and 1928 transitions. [2023-11-06 23:04:57,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 206 transitions, 2954 flow [2023-11-06 23:04:57,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 206 transitions, 2803 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-11-06 23:04:57,633 INFO L231 Difference]: Finished difference. Result has 217 places, 182 transitions, 2451 flow [2023-11-06 23:04:57,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2451, PETRI_PLACES=217, PETRI_TRANSITIONS=182} [2023-11-06 23:04:57,634 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 140 predicate places. [2023-11-06 23:04:57,634 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 182 transitions, 2451 flow [2023-11-06 23:04:57,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 266.90909090909093) internal successors, (2936), 11 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states 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 23:04:57,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:57,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:57,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-06 23:04:57,635 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:04:57,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1098513009, now seen corresponding path program 3 times [2023-11-06 23:04:57,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:57,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908154623] [2023-11-06 23:04:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:57,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:59,163 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 23:04:59,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:59,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908154623] [2023-11-06 23:04:59,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908154623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:59,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:59,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 23:04:59,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684822868] [2023-11-06 23:04:59,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:59,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 23:04:59,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 23:04:59,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:05:01,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 620 [2023-11-06 23:05:01,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 182 transitions, 2451 flow. Second operand has 18 states, 18 states have (on average 249.77777777777777) internal successors, (4496), 18 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states 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 23:05:01,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:02,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 620 [2023-11-06 23:05:02,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:05,697 INFO L124 PetriNetUnfolderBase]: 6108/11774 cut-off events. [2023-11-06 23:05:05,698 INFO L125 PetriNetUnfolderBase]: For 44406/44436 co-relation queries the response was YES. [2023-11-06 23:05:05,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44184 conditions, 11774 events. 6108/11774 cut-off events. For 44406/44436 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 80064 event pairs, 913 based on Foata normal form. 28/11480 useless extension candidates. Maximal degree in co-relation 40165. Up to 3908 conditions per place. [2023-11-06 23:05:05,862 INFO L140 encePairwiseOnDemand]: 602/620 looper letters, 196 selfloop transitions, 82 changer transitions 12/296 dead transitions. [2023-11-06 23:05:05,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 296 transitions, 3561 flow [2023-11-06 23:05:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 23:05:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 23:05:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4388 transitions. [2023-11-06 23:05:05,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41631878557874763 [2023-11-06 23:05:05,870 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4388 transitions. [2023-11-06 23:05:05,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4388 transitions. [2023-11-06 23:05:05,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:05,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4388 transitions. [2023-11-06 23:05:05,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 258.11764705882354) internal successors, (4388), 17 states have internal predecessors, (4388), 0 states have call successors, (0), 0 states 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 23:05:05,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 23:05:05,883 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states 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 23:05:05,883 INFO L175 Difference]: Start difference. First operand has 217 places, 182 transitions, 2451 flow. Second operand 17 states and 4388 transitions. [2023-11-06 23:05:05,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 296 transitions, 3561 flow [2023-11-06 23:05:06,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 296 transitions, 3403 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 23:05:06,254 INFO L231 Difference]: Finished difference. Result has 227 places, 181 transitions, 2450 flow [2023-11-06 23:05:06,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2450, PETRI_PLACES=227, PETRI_TRANSITIONS=181} [2023-11-06 23:05:06,255 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 150 predicate places. [2023-11-06 23:05:06,255 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 181 transitions, 2450 flow [2023-11-06 23:05:06,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 249.77777777777777) internal successors, (4496), 18 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states 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 23:05:06,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:06,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:06,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-06 23:05:06,256 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:05:06,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:06,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1910691935, now seen corresponding path program 1 times [2023-11-06 23:05:06,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:06,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126659024] [2023-11-06 23:05:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:06,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:07,537 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 23:05:07,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:07,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126659024] [2023-11-06 23:05:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126659024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:07,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 23:05:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98769656] [2023-11-06 23:05:07,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:07,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:05:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:05:07,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:05:09,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 620 [2023-11-06 23:05:09,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 181 transitions, 2450 flow. Second operand has 14 states, 14 states have (on average 261.5) internal successors, (3661), 14 states have internal predecessors, (3661), 0 states have call successors, (0), 0 states 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 23:05:09,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:09,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 620 [2023-11-06 23:05:09,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:12,892 INFO L124 PetriNetUnfolderBase]: 7108/13649 cut-off events. [2023-11-06 23:05:12,892 INFO L125 PetriNetUnfolderBase]: For 56606/56680 co-relation queries the response was YES. [2023-11-06 23:05:13,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51758 conditions, 13649 events. 7108/13649 cut-off events. For 56606/56680 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 95975 event pairs, 4496 based on Foata normal form. 24/13295 useless extension candidates. Maximal degree in co-relation 45575. Up to 10250 conditions per place. [2023-11-06 23:05:13,096 INFO L140 encePairwiseOnDemand]: 603/620 looper letters, 250 selfloop transitions, 44 changer transitions 9/309 dead transitions. [2023-11-06 23:05:13,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 309 transitions, 3864 flow [2023-11-06 23:05:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:05:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 23:05:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3802 transitions. [2023-11-06 23:05:13,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380184331797235 [2023-11-06 23:05:13,102 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3802 transitions. [2023-11-06 23:05:13,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3802 transitions. [2023-11-06 23:05:13,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:13,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3802 transitions. [2023-11-06 23:05:13,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 271.57142857142856) internal successors, (3802), 14 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states 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 23:05:13,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states 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 23:05:13,116 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states 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 23:05:13,116 INFO L175 Difference]: Start difference. First operand has 227 places, 181 transitions, 2450 flow. Second operand 14 states and 3802 transitions. [2023-11-06 23:05:13,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 309 transitions, 3864 flow [2023-11-06 23:05:13,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 309 transitions, 3697 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-06 23:05:13,647 INFO L231 Difference]: Finished difference. Result has 235 places, 194 transitions, 2714 flow [2023-11-06 23:05:13,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2714, PETRI_PLACES=235, PETRI_TRANSITIONS=194} [2023-11-06 23:05:13,648 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 158 predicate places. [2023-11-06 23:05:13,648 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 194 transitions, 2714 flow [2023-11-06 23:05:13,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 261.5) internal successors, (3661), 14 states have internal predecessors, (3661), 0 states have call successors, (0), 0 states 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 23:05:13,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:13,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:13,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-06 23:05:13,650 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-11-06 23:05:13,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:13,651 INFO L85 PathProgramCache]: Analyzing trace with hash -478631862, now seen corresponding path program 1 times [2023-11-06 23:05:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:13,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428089893] [2023-11-06 23:05:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:13,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:26,927 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 23:05:26,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428089893] [2023-11-06 23:05:26,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428089893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:26,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:26,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 23:05:26,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663256635] [2023-11-06 23:05:26,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:26,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 23:05:26,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:26,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 23:05:26,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:05:36,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:05:43,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 620 [2023-11-06 23:05:43,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 194 transitions, 2714 flow. Second operand has 16 states, 16 states have (on average 262.1875) internal successors, (4195), 16 states have internal predecessors, (4195), 0 states have call successors, (0), 0 states 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 23:05:43,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:43,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 620 [2023-11-06 23:05:43,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand