./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8 --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 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:44:35,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:44:35,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:44:35,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:44:35,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:44:35,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:44:35,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:44:35,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:44:35,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:44:35,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:44:35,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:44:35,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:44:35,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:44:35,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:44:35,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:44:35,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:44:35,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:44:35,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:44:35,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:44:35,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:44:35,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:44:35,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:44:35,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:44:35,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:44:35,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:44:35,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:44:35,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:44:35,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:44:35,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:44:35,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:44:35,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:44:35,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:44:35,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:44:35,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:44:35,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:44:35,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:44:35,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:44:35,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:44:35,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:44:35,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:44:35,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:44:35,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:44:35,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:44:35,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:44:35,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:44:35,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:44:35,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:44:35,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:44:35,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:44:35,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:44:35,679 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:44:35,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:44:35,680 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:44:35,680 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:44:35,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:44:35,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:44:35,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:44:35,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:44:35,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:44:35,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:44:35,681 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:44:35,681 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:44:35,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:44:35,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:44:35,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:44:35,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:44:35,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:44:35,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:44:35,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:44:35,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:44:35,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:44:35,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:44:35,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:44:35,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:44:35,686 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:44:35,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:44:35,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:44:35,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a [2022-11-16 12:44:36,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:44:36,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:44:36,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:44:36,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:44:36,084 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:44:36,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2022-11-16 12:44:36,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/data/e0fcee504/707b51cbf3134299a2bb5451935cdb28/FLAG4090fa510 [2022-11-16 12:44:36,793 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:44:36,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2022-11-16 12:44:36,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/data/e0fcee504/707b51cbf3134299a2bb5451935cdb28/FLAG4090fa510 [2022-11-16 12:44:37,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/data/e0fcee504/707b51cbf3134299a2bb5451935cdb28 [2022-11-16 12:44:37,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:44:37,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:44:37,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:44:37,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:44:37,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:44:37,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b18cb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37, skipping insertion in model container [2022-11-16 12:44:37,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:44:37,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:44:37,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:44:37,776 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:44:37,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:44:37,895 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:44:37,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37 WrapperNode [2022-11-16 12:44:37,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:44:37,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:44:37,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:44:37,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:44:37,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,956 INFO L138 Inliner]: procedures = 365, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-11-16 12:44:37,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:44:37,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:44:37,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:44:37,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:44:37,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:44:37,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:44:37,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:44:37,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:44:37,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (1/1) ... [2022-11-16 12:44:37,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:44:38,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:38,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:44:38,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a6f123-bd77-4ebb-877b-4417db47dbbb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:44:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:44:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:44:38,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:44:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:44:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:44:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:44:38,065 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 12:44:38,065 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 12:44:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:44:38,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:44:38,067 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:44:38,299 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:44:38,301 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:44:38,482 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:44:38,488 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:44:38,489 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:44:38,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:38 BoogieIcfgContainer [2022-11-16 12:44:38,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:44:38,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:44:38,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:44:38,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:44:38,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:44:37" (1/3) ... [2022-11-16 12:44:38,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d763f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:38, skipping insertion in model container [2022-11-16 12:44:38,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:44:37" (2/3) ... [2022-11-16 12:44:38,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d763f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:44:38, skipping insertion in model container [2022-11-16 12:44:38,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:44:38" (3/3) ... [2022-11-16 12:44:38,500 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2022-11-16 12:44:38,508 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:44:38,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:44:38,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 12:44:38,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:44:38,566 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:44:38,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 151 flow [2022-11-16 12:44:38,676 INFO L130 PetriNetUnfolder]: 0/72 cut-off events. [2022-11-16 12:44:38,676 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:44:38,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 0/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-16 12:44:38,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 73 transitions, 151 flow [2022-11-16 12:44:38,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 72 transitions, 147 flow [2022-11-16 12:44:38,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:44:38,716 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;@58e165ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:44:38,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:44:38,761 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-11-16 12:44:38,761 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:44:38,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:38,762 INFO L209 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] [2022-11-16 12:44:38,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:38,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1780094849, now seen corresponding path program 1 times [2022-11-16 12:44:38,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:38,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839558135] [2022-11-16 12:44:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:38,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:40,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:40,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839558135] [2022-11-16 12:44:40,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839558135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:40,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:40,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:44:40,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287808591] [2022-11-16 12:44:40,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:40,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:44:40,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:40,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:44:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:44:40,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-16 12:44:40,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 147 flow. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:40,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:40,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-16 12:44:40,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:42,175 INFO L130 PetriNetUnfolder]: 84/383 cut-off events. [2022-11-16 12:44:42,176 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:44:42,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 383 events. 84/383 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1937 event pairs, 2 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 552. Up to 29 conditions per place. [2022-11-16 12:44:42,187 INFO L137 encePairwiseOnDemand]: 52/73 looper letters, 64 selfloop transitions, 36 changer transitions 24/161 dead transitions. [2022-11-16 12:44:42,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 573 flow [2022-11-16 12:44:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:44:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 12:44:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1078 transitions. [2022-11-16 12:44:42,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5906849315068493 [2022-11-16 12:44:42,218 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1078 transitions. [2022-11-16 12:44:42,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1078 transitions. [2022-11-16 12:44:42,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:42,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1078 transitions. [2022-11-16 12:44:42,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 43.12) internal successors, (1078), 25 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:42,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:42,244 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:42,246 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 147 flow. Second operand 25 states and 1078 transitions. [2022-11-16 12:44:42,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 573 flow [2022-11-16 12:44:42,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:44:42,255 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 334 flow [2022-11-16 12:44:42,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=334, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2022-11-16 12:44:42,260 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 34 predicate places. [2022-11-16 12:44:42,261 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 334 flow [2022-11-16 12:44:42,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:42,261 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:42,262 INFO L209 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] [2022-11-16 12:44:42,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:44:42,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:42,263 INFO L85 PathProgramCache]: Analyzing trace with hash -651634337, now seen corresponding path program 1 times [2022-11-16 12:44:42,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:42,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250506020] [2022-11-16 12:44:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:42,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:42,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:42,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250506020] [2022-11-16 12:44:42,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250506020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:42,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:42,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:44:42,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937261908] [2022-11-16 12:44:42,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:42,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:44:42,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:42,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:44:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:44:42,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-16 12:44:42,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 334 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:42,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:42,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-16 12:44:42,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:44,115 INFO L130 PetriNetUnfolder]: 62/289 cut-off events. [2022-11-16 12:44:44,115 INFO L131 PetriNetUnfolder]: For 154/170 co-relation queries the response was YES. [2022-11-16 12:44:44,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 289 events. 62/289 cut-off events. For 154/170 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1377 event pairs, 1 based on Foata normal form. 2/282 useless extension candidates. Maximal degree in co-relation 586. Up to 45 conditions per place. [2022-11-16 12:44:44,119 INFO L137 encePairwiseOnDemand]: 52/73 looper letters, 53 selfloop transitions, 25 changer transitions 17/132 dead transitions. [2022-11-16 12:44:44,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 636 flow [2022-11-16 12:44:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:44:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:44:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 889 transitions. [2022-11-16 12:44:44,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5799086757990868 [2022-11-16 12:44:44,122 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 889 transitions. [2022-11-16 12:44:44,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 889 transitions. [2022-11-16 12:44:44,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:44,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 889 transitions. [2022-11-16 12:44:44,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 42.333333333333336) internal successors, (889), 21 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:44,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:44,130 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:44,130 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 334 flow. Second operand 21 states and 889 transitions. [2022-11-16 12:44:44,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 636 flow [2022-11-16 12:44:44,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 612 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:44:44,137 INFO L231 Difference]: Finished difference. Result has 128 places, 89 transitions, 366 flow [2022-11-16 12:44:44,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=366, PETRI_PLACES=128, PETRI_TRANSITIONS=89} [2022-11-16 12:44:44,138 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2022-11-16 12:44:44,138 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 89 transitions, 366 flow [2022-11-16 12:44:44,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:44,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:44,139 INFO L209 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] [2022-11-16 12:44:44,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:44:44,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:44,140 INFO L85 PathProgramCache]: Analyzing trace with hash 654835029, now seen corresponding path program 1 times [2022-11-16 12:44:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:44,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144287965] [2022-11-16 12:44:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:44,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:44,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:44,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144287965] [2022-11-16 12:44:44,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144287965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:44,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:44,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:44:44,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366893028] [2022-11-16 12:44:44,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:44,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:44:44,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:44:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:44:44,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-16 12:44:44,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 89 transitions, 366 flow. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:44,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:44,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-16 12:44:44,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:45,735 INFO L130 PetriNetUnfolder]: 47/272 cut-off events. [2022-11-16 12:44:45,736 INFO L131 PetriNetUnfolder]: For 335/343 co-relation queries the response was YES. [2022-11-16 12:44:45,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 272 events. 47/272 cut-off events. For 335/343 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1348 event pairs, 0 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 696. Up to 38 conditions per place. [2022-11-16 12:44:45,739 INFO L137 encePairwiseOnDemand]: 53/73 looper letters, 46 selfloop transitions, 30 changer transitions 2/124 dead transitions. [2022-11-16 12:44:45,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 699 flow [2022-11-16 12:44:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:44:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:44:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 758 transitions. [2022-11-16 12:44:45,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5768645357686454 [2022-11-16 12:44:45,743 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 758 transitions. [2022-11-16 12:44:45,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 758 transitions. [2022-11-16 12:44:45,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:45,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 758 transitions. [2022-11-16 12:44:45,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 42.111111111111114) internal successors, (758), 18 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:45,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 73.0) internal successors, (1387), 19 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:45,749 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 73.0) internal successors, (1387), 19 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:45,750 INFO L175 Difference]: Start difference. First operand has 128 places, 89 transitions, 366 flow. Second operand 18 states and 758 transitions. [2022-11-16 12:44:45,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 699 flow [2022-11-16 12:44:45,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 584 flow, removed 10 selfloop flow, removed 21 redundant places. [2022-11-16 12:44:45,756 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 447 flow [2022-11-16 12:44:45,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=447, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2022-11-16 12:44:45,760 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 47 predicate places. [2022-11-16 12:44:45,760 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 447 flow [2022-11-16 12:44:45,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:45,762 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:45,762 INFO L209 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] [2022-11-16 12:44:45,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:44:45,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1174950429, now seen corresponding path program 1 times [2022-11-16 12:44:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:45,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417608647] [2022-11-16 12:44:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:46,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417608647] [2022-11-16 12:44:46,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417608647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:46,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:46,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 12:44:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837480915] [2022-11-16 12:44:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:46,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:44:46,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:44:46,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:44:46,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-16 12:44:46,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 447 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:46,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:46,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-16 12:44:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:47,435 INFO L130 PetriNetUnfolder]: 44/259 cut-off events. [2022-11-16 12:44:47,435 INFO L131 PetriNetUnfolder]: For 215/222 co-relation queries the response was YES. [2022-11-16 12:44:47,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 259 events. 44/259 cut-off events. For 215/222 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1240 event pairs, 0 based on Foata normal form. 7/262 useless extension candidates. Maximal degree in co-relation 627. Up to 30 conditions per place. [2022-11-16 12:44:47,438 INFO L137 encePairwiseOnDemand]: 51/73 looper letters, 41 selfloop transitions, 29 changer transitions 8/124 dead transitions. [2022-11-16 12:44:47,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 702 flow [2022-11-16 12:44:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:44:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:44:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 796 transitions. [2022-11-16 12:44:47,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5739005046863734 [2022-11-16 12:44:47,442 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 796 transitions. [2022-11-16 12:44:47,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 796 transitions. [2022-11-16 12:44:47,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:47,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 796 transitions. [2022-11-16 12:44:47,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 41.89473684210526) internal successors, (796), 19 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:47,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 73.0) internal successors, (1460), 20 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:47,449 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 73.0) internal successors, (1460), 20 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:47,450 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 447 flow. Second operand 19 states and 796 transitions. [2022-11-16 12:44:47,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 702 flow [2022-11-16 12:44:47,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 676 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:44:47,456 INFO L231 Difference]: Finished difference. Result has 135 places, 98 transitions, 490 flow [2022-11-16 12:44:47,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=490, PETRI_PLACES=135, PETRI_TRANSITIONS=98} [2022-11-16 12:44:47,457 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 59 predicate places. [2022-11-16 12:44:47,458 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 98 transitions, 490 flow [2022-11-16 12:44:47,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:47,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:47,459 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:44:47,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash -740923633, now seen corresponding path program 1 times [2022-11-16 12:44:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:47,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105589012] [2022-11-16 12:44:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:47,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:48,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:48,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105589012] [2022-11-16 12:44:48,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105589012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:48,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:48,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:44:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658293136] [2022-11-16 12:44:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:48,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:44:48,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:44:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:44:48,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:48,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 98 transitions, 490 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:48,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:48,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:48,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:48,533 INFO L130 PetriNetUnfolder]: 76/369 cut-off events. [2022-11-16 12:44:48,533 INFO L131 PetriNetUnfolder]: For 715/723 co-relation queries the response was YES. [2022-11-16 12:44:48,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 369 events. 76/369 cut-off events. For 715/723 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1824 event pairs, 9 based on Foata normal form. 11/376 useless extension candidates. Maximal degree in co-relation 1013. Up to 40 conditions per place. [2022-11-16 12:44:48,539 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 65 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2022-11-16 12:44:48,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 146 transitions, 922 flow [2022-11-16 12:44:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:44:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:44:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 609 transitions. [2022-11-16 12:44:48,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584059775840598 [2022-11-16 12:44:48,543 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 609 transitions. [2022-11-16 12:44:48,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 609 transitions. [2022-11-16 12:44:48,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:48,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 609 transitions. [2022-11-16 12:44:48,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.36363636363637) internal successors, (609), 11 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:48,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:48,549 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:48,549 INFO L175 Difference]: Start difference. First operand has 135 places, 98 transitions, 490 flow. Second operand 11 states and 609 transitions. [2022-11-16 12:44:48,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 146 transitions, 922 flow [2022-11-16 12:44:48,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 146 transitions, 803 flow, removed 3 selfloop flow, removed 20 redundant places. [2022-11-16 12:44:48,559 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 530 flow [2022-11-16 12:44:48,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=530, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2022-11-16 12:44:48,562 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 51 predicate places. [2022-11-16 12:44:48,562 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 530 flow [2022-11-16 12:44:48,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:48,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:48,563 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:48,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:44:48,564 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1973443087, now seen corresponding path program 2 times [2022-11-16 12:44:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:48,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072372932] [2022-11-16 12:44:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:49,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072372932] [2022-11-16 12:44:49,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072372932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:49,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:49,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:44:49,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65367632] [2022-11-16 12:44:49,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:49,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:44:49,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:49,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:44:49,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:44:49,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:49,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 530 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:49,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:49,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:49,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:49,603 INFO L130 PetriNetUnfolder]: 129/626 cut-off events. [2022-11-16 12:44:49,603 INFO L131 PetriNetUnfolder]: For 867/883 co-relation queries the response was YES. [2022-11-16 12:44:49,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 626 events. 129/626 cut-off events. For 867/883 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3993 event pairs, 10 based on Foata normal form. 19/639 useless extension candidates. Maximal degree in co-relation 1777. Up to 119 conditions per place. [2022-11-16 12:44:49,609 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 84 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2022-11-16 12:44:49,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 171 transitions, 1124 flow [2022-11-16 12:44:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:44:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:44:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-16 12:44:49,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-16 12:44:49,612 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-16 12:44:49,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-16 12:44:49,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:49,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-16 12:44:49,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:49,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:49,619 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:49,619 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 530 flow. Second operand 11 states and 615 transitions. [2022-11-16 12:44:49,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 171 transitions, 1124 flow [2022-11-16 12:44:49,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 171 transitions, 1063 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:44:49,629 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 720 flow [2022-11-16 12:44:49,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=720, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2022-11-16 12:44:49,633 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 62 predicate places. [2022-11-16 12:44:49,633 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 720 flow [2022-11-16 12:44:49,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:49,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:49,635 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:44:49,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:49,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:49,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1595994481, now seen corresponding path program 3 times [2022-11-16 12:44:49,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:49,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583940113] [2022-11-16 12:44:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:49,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:50,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:50,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583940113] [2022-11-16 12:44:50,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583940113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:50,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:50,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:44:50,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224167771] [2022-11-16 12:44:50,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:50,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:44:50,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:44:50,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:44:50,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:50,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 720 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:50,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:50,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:50,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:50,704 INFO L130 PetriNetUnfolder]: 137/677 cut-off events. [2022-11-16 12:44:50,704 INFO L131 PetriNetUnfolder]: For 1337/1365 co-relation queries the response was YES. [2022-11-16 12:44:50,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 677 events. 137/677 cut-off events. For 1337/1365 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4449 event pairs, 16 based on Foata normal form. 23/694 useless extension candidates. Maximal degree in co-relation 2047. Up to 84 conditions per place. [2022-11-16 12:44:50,712 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 72 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2022-11-16 12:44:50,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 172 transitions, 1246 flow [2022-11-16 12:44:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:44:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:44:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 609 transitions. [2022-11-16 12:44:50,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584059775840598 [2022-11-16 12:44:50,715 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 609 transitions. [2022-11-16 12:44:50,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 609 transitions. [2022-11-16 12:44:50,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:50,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 609 transitions. [2022-11-16 12:44:50,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.36363636363637) internal successors, (609), 11 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:50,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:50,720 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:50,720 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 720 flow. Second operand 11 states and 609 transitions. [2022-11-16 12:44:50,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 172 transitions, 1246 flow [2022-11-16 12:44:50,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 172 transitions, 1229 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-16 12:44:50,736 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 893 flow [2022-11-16 12:44:50,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2022-11-16 12:44:50,737 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 74 predicate places. [2022-11-16 12:44:50,737 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 893 flow [2022-11-16 12:44:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:50,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:50,738 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:50,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:44:50,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash 66018381, now seen corresponding path program 4 times [2022-11-16 12:44:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:50,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500118076] [2022-11-16 12:44:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:51,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500118076] [2022-11-16 12:44:51,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500118076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:51,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:51,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:44:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034350774] [2022-11-16 12:44:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:51,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:44:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:44:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:51,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:51,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 893 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:51,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:51,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:51,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:52,034 INFO L130 PetriNetUnfolder]: 169/894 cut-off events. [2022-11-16 12:44:52,035 INFO L131 PetriNetUnfolder]: For 2480/2505 co-relation queries the response was YES. [2022-11-16 12:44:52,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2978 conditions, 894 events. 169/894 cut-off events. For 2480/2505 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6637 event pairs, 9 based on Foata normal form. 25/910 useless extension candidates. Maximal degree in co-relation 2891. Up to 97 conditions per place. [2022-11-16 12:44:52,045 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 93 selfloop transitions, 64 changer transitions 0/217 dead transitions. [2022-11-16 12:44:52,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 217 transitions, 1910 flow [2022-11-16 12:44:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:44:52,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:44:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 924 transitions. [2022-11-16 12:44:52,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7445608380338437 [2022-11-16 12:44:52,049 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 924 transitions. [2022-11-16 12:44:52,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 924 transitions. [2022-11-16 12:44:52,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:52,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 924 transitions. [2022-11-16 12:44:52,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:52,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:52,058 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:52,058 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 893 flow. Second operand 17 states and 924 transitions. [2022-11-16 12:44:52,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 217 transitions, 1910 flow [2022-11-16 12:44:52,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 217 transitions, 1778 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-16 12:44:52,082 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 1260 flow [2022-11-16 12:44:52,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1260, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2022-11-16 12:44:52,085 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 89 predicate places. [2022-11-16 12:44:52,085 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 1260 flow [2022-11-16 12:44:52,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:52,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:52,086 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:52,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:44:52,087 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash -707654379, now seen corresponding path program 5 times [2022-11-16 12:44:52,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:52,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263697343] [2022-11-16 12:44:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:52,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:52,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263697343] [2022-11-16 12:44:52,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263697343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:52,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:52,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:44:52,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114358066] [2022-11-16 12:44:52,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:52,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:44:52,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:52,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:44:52,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:52,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:52,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 1260 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:52,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:52,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:52,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:53,214 INFO L130 PetriNetUnfolder]: 185/990 cut-off events. [2022-11-16 12:44:53,216 INFO L131 PetriNetUnfolder]: For 3278/3327 co-relation queries the response was YES. [2022-11-16 12:44:53,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 990 events. 185/990 cut-off events. For 3278/3327 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7679 event pairs, 22 based on Foata normal form. 47/1029 useless extension candidates. Maximal degree in co-relation 3339. Up to 103 conditions per place. [2022-11-16 12:44:53,225 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 84 selfloop transitions, 77 changer transitions 0/221 dead transitions. [2022-11-16 12:44:53,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 221 transitions, 2103 flow [2022-11-16 12:44:53,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:44:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:44:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 767 transitions. [2022-11-16 12:44:53,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7504892367906066 [2022-11-16 12:44:53,228 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 767 transitions. [2022-11-16 12:44:53,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 767 transitions. [2022-11-16 12:44:53,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:53,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 767 transitions. [2022-11-16 12:44:53,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 54.785714285714285) internal successors, (767), 14 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:53,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:53,233 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:53,233 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 1260 flow. Second operand 14 states and 767 transitions. [2022-11-16 12:44:53,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 221 transitions, 2103 flow [2022-11-16 12:44:53,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 1869 flow, removed 79 selfloop flow, removed 5 redundant places. [2022-11-16 12:44:53,265 INFO L231 Difference]: Finished difference. Result has 180 places, 179 transitions, 1534 flow [2022-11-16 12:44:53,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1534, PETRI_PLACES=180, PETRI_TRANSITIONS=179} [2022-11-16 12:44:53,266 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 104 predicate places. [2022-11-16 12:44:53,266 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 179 transitions, 1534 flow [2022-11-16 12:44:53,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:53,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:53,268 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:53,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:44:53,268 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1884845749, now seen corresponding path program 6 times [2022-11-16 12:44:53,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:53,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687203474] [2022-11-16 12:44:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:53,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:53,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:53,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687203474] [2022-11-16 12:44:53,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687203474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:53,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:53,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:44:53,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68293469] [2022-11-16 12:44:53,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:53,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:44:53,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:44:53,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:53,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:53,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 179 transitions, 1534 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:53,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:53,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:53,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:54,723 INFO L130 PetriNetUnfolder]: 224/1211 cut-off events. [2022-11-16 12:44:54,723 INFO L131 PetriNetUnfolder]: For 5048/5090 co-relation queries the response was YES. [2022-11-16 12:44:54,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 1211 events. 224/1211 cut-off events. For 5048/5090 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10015 event pairs, 17 based on Foata normal form. 28/1228 useless extension candidates. Maximal degree in co-relation 4241. Up to 130 conditions per place. [2022-11-16 12:44:54,735 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 123 selfloop transitions, 79 changer transitions 0/262 dead transitions. [2022-11-16 12:44:54,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 262 transitions, 2711 flow [2022-11-16 12:44:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:44:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:44:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 932 transitions. [2022-11-16 12:44:54,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7510072522159549 [2022-11-16 12:44:54,738 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 932 transitions. [2022-11-16 12:44:54,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 932 transitions. [2022-11-16 12:44:54,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:54,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 932 transitions. [2022-11-16 12:44:54,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:54,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:54,744 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:54,744 INFO L175 Difference]: Start difference. First operand has 180 places, 179 transitions, 1534 flow. Second operand 17 states and 932 transitions. [2022-11-16 12:44:54,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 262 transitions, 2711 flow [2022-11-16 12:44:54,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 262 transitions, 2587 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-11-16 12:44:54,783 INFO L231 Difference]: Finished difference. Result has 197 places, 200 transitions, 1965 flow [2022-11-16 12:44:54,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1965, PETRI_PLACES=197, PETRI_TRANSITIONS=200} [2022-11-16 12:44:54,785 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 121 predicate places. [2022-11-16 12:44:54,785 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 200 transitions, 1965 flow [2022-11-16 12:44:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:54,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:54,786 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:54,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:44:54,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:54,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash 152154035, now seen corresponding path program 7 times [2022-11-16 12:44:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:54,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653036881] [2022-11-16 12:44:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:54,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:55,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:55,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653036881] [2022-11-16 12:44:55,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653036881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:55,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:55,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:44:55,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928028132] [2022-11-16 12:44:55,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:55,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:44:55,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:55,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:44:55,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:55,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:55,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 200 transitions, 1965 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:55,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:55,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:55,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:56,030 INFO L130 PetriNetUnfolder]: 268/1491 cut-off events. [2022-11-16 12:44:56,030 INFO L131 PetriNetUnfolder]: For 7239/7304 co-relation queries the response was YES. [2022-11-16 12:44:56,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 1491 events. 268/1491 cut-off events. For 7239/7304 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13183 event pairs, 33 based on Foata normal form. 43/1521 useless extension candidates. Maximal degree in co-relation 5405. Up to 185 conditions per place. [2022-11-16 12:44:56,046 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 143 selfloop transitions, 90 changer transitions 0/293 dead transitions. [2022-11-16 12:44:56,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 293 transitions, 3326 flow [2022-11-16 12:44:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:44:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:44:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 834 transitions. [2022-11-16 12:44:56,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7616438356164383 [2022-11-16 12:44:56,049 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 834 transitions. [2022-11-16 12:44:56,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 834 transitions. [2022-11-16 12:44:56,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:56,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 834 transitions. [2022-11-16 12:44:56,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.6) internal successors, (834), 15 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:56,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:56,059 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:56,059 INFO L175 Difference]: Start difference. First operand has 197 places, 200 transitions, 1965 flow. Second operand 15 states and 834 transitions. [2022-11-16 12:44:56,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 293 transitions, 3326 flow [2022-11-16 12:44:56,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 293 transitions, 3187 flow, removed 39 selfloop flow, removed 6 redundant places. [2022-11-16 12:44:56,115 INFO L231 Difference]: Finished difference. Result has 213 places, 225 transitions, 2480 flow [2022-11-16 12:44:56,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2480, PETRI_PLACES=213, PETRI_TRANSITIONS=225} [2022-11-16 12:44:56,116 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 137 predicate places. [2022-11-16 12:44:56,116 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 225 transitions, 2480 flow [2022-11-16 12:44:56,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:56,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:56,117 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:56,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:44:56,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1540886853, now seen corresponding path program 8 times [2022-11-16 12:44:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:56,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295519716] [2022-11-16 12:44:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:56,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:56,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:56,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295519716] [2022-11-16 12:44:56,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295519716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:56,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:56,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:44:56,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587881598] [2022-11-16 12:44:56,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:56,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:44:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:44:56,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:56,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:56,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 225 transitions, 2480 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:56,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:56,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:56,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:57,562 INFO L130 PetriNetUnfolder]: 271/1513 cut-off events. [2022-11-16 12:44:57,562 INFO L131 PetriNetUnfolder]: For 9184/9246 co-relation queries the response was YES. [2022-11-16 12:44:57,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5854 conditions, 1513 events. 271/1513 cut-off events. For 9184/9246 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13429 event pairs, 41 based on Foata normal form. 30/1529 useless extension candidates. Maximal degree in co-relation 5742. Up to 149 conditions per place. [2022-11-16 12:44:57,577 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 153 selfloop transitions, 88 changer transitions 0/301 dead transitions. [2022-11-16 12:44:57,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 301 transitions, 3672 flow [2022-11-16 12:44:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:44:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:44:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 937 transitions. [2022-11-16 12:44:57,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7550362610797744 [2022-11-16 12:44:57,580 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 937 transitions. [2022-11-16 12:44:57,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 937 transitions. [2022-11-16 12:44:57,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:57,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 937 transitions. [2022-11-16 12:44:57,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.11764705882353) internal successors, (937), 17 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:57,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:57,588 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:57,589 INFO L175 Difference]: Start difference. First operand has 213 places, 225 transitions, 2480 flow. Second operand 17 states and 937 transitions. [2022-11-16 12:44:57,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 301 transitions, 3672 flow [2022-11-16 12:44:57,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 301 transitions, 3558 flow, removed 39 selfloop flow, removed 4 redundant places. [2022-11-16 12:44:57,655 INFO L231 Difference]: Finished difference. Result has 232 places, 241 transitions, 2886 flow [2022-11-16 12:44:57,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2886, PETRI_PLACES=232, PETRI_TRANSITIONS=241} [2022-11-16 12:44:57,656 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 156 predicate places. [2022-11-16 12:44:57,657 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 241 transitions, 2886 flow [2022-11-16 12:44:57,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:57,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:57,657 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:57,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:44:57,658 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:57,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash -751078267, now seen corresponding path program 9 times [2022-11-16 12:44:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:57,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842050882] [2022-11-16 12:44:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:57,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:58,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:58,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842050882] [2022-11-16 12:44:58,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842050882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:58,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:44:58,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:44:58,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446389538] [2022-11-16 12:44:58,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:58,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:44:58,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:44:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:44:58,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:44:58,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 241 transitions, 2886 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:58,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:58,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:44:58,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:59,500 INFO L130 PetriNetUnfolder]: 279/1595 cut-off events. [2022-11-16 12:44:59,501 INFO L131 PetriNetUnfolder]: For 11436/11506 co-relation queries the response was YES. [2022-11-16 12:44:59,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6393 conditions, 1595 events. 279/1595 cut-off events. For 11436/11506 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14545 event pairs, 63 based on Foata normal form. 49/1632 useless extension candidates. Maximal degree in co-relation 6274. Up to 275 conditions per place. [2022-11-16 12:44:59,517 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 168 selfloop transitions, 74 changer transitions 0/302 dead transitions. [2022-11-16 12:44:59,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 302 transitions, 4009 flow [2022-11-16 12:44:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:44:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:44:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 721 transitions. [2022-11-16 12:44:59,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7597471022128557 [2022-11-16 12:44:59,519 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 721 transitions. [2022-11-16 12:44:59,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 721 transitions. [2022-11-16 12:44:59,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:59,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 721 transitions. [2022-11-16 12:44:59,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 55.46153846153846) internal successors, (721), 13 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:59,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:59,525 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:59,525 INFO L175 Difference]: Start difference. First operand has 232 places, 241 transitions, 2886 flow. Second operand 13 states and 721 transitions. [2022-11-16 12:44:59,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 302 transitions, 4009 flow [2022-11-16 12:44:59,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 302 transitions, 3688 flow, removed 128 selfloop flow, removed 6 redundant places. [2022-11-16 12:44:59,606 INFO L231 Difference]: Finished difference. Result has 243 places, 252 transitions, 3083 flow [2022-11-16 12:44:59,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3083, PETRI_PLACES=243, PETRI_TRANSITIONS=252} [2022-11-16 12:44:59,608 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 167 predicate places. [2022-11-16 12:44:59,608 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 252 transitions, 3083 flow [2022-11-16 12:44:59,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:59,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:59,609 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:59,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:44:59,609 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:44:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1898240491, now seen corresponding path program 10 times [2022-11-16 12:44:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:59,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335899969] [2022-11-16 12:44:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:59,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:00,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:00,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335899969] [2022-11-16 12:45:00,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335899969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:00,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:00,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:00,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484225345] [2022-11-16 12:45:00,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:00,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:00,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:00,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:00,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:00,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 252 transitions, 3083 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:00,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:00,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:00,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:01,075 INFO L130 PetriNetUnfolder]: 282/1629 cut-off events. [2022-11-16 12:45:01,076 INFO L131 PetriNetUnfolder]: For 11412/11473 co-relation queries the response was YES. [2022-11-16 12:45:01,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1629 events. 282/1629 cut-off events. For 11412/11473 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14981 event pairs, 66 based on Foata normal form. 27/1644 useless extension candidates. Maximal degree in co-relation 6366. Up to 331 conditions per place. [2022-11-16 12:45:01,092 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 184 selfloop transitions, 60 changer transitions 0/304 dead transitions. [2022-11-16 12:45:01,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 304 transitions, 4044 flow [2022-11-16 12:45:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-16 12:45:01,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-16 12:45:01,095 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-16 12:45:01,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-16 12:45:01,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:01,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-16 12:45:01,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:01,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:01,099 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:01,099 INFO L175 Difference]: Start difference. First operand has 243 places, 252 transitions, 3083 flow. Second operand 11 states and 615 transitions. [2022-11-16 12:45:01,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 304 transitions, 4044 flow [2022-11-16 12:45:01,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 304 transitions, 3937 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-16 12:45:01,190 INFO L231 Difference]: Finished difference. Result has 253 places, 263 transitions, 3378 flow [2022-11-16 12:45:01,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3378, PETRI_PLACES=253, PETRI_TRANSITIONS=263} [2022-11-16 12:45:01,191 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 177 predicate places. [2022-11-16 12:45:01,192 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 263 transitions, 3378 flow [2022-11-16 12:45:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:01,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:01,192 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:01,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:45:01,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:01,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2144773403, now seen corresponding path program 11 times [2022-11-16 12:45:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:01,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420554005] [2022-11-16 12:45:01,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:01,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420554005] [2022-11-16 12:45:01,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420554005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:01,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:01,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244314954] [2022-11-16 12:45:01,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:01,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:01,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:01,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 263 transitions, 3378 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:01,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:01,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:01,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:02,769 INFO L130 PetriNetUnfolder]: 343/2068 cut-off events. [2022-11-16 12:45:02,769 INFO L131 PetriNetUnfolder]: For 15282/15356 co-relation queries the response was YES. [2022-11-16 12:45:02,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8214 conditions, 2068 events. 343/2068 cut-off events. For 15282/15356 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20615 event pairs, 97 based on Foata normal form. 19/2068 useless extension candidates. Maximal degree in co-relation 8084. Up to 284 conditions per place. [2022-11-16 12:45:02,797 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 254 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2022-11-16 12:45:02,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 352 transitions, 4996 flow [2022-11-16 12:45:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 630 transitions. [2022-11-16 12:45:02,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7845579078455791 [2022-11-16 12:45:02,802 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 630 transitions. [2022-11-16 12:45:02,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 630 transitions. [2022-11-16 12:45:02,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:02,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 630 transitions. [2022-11-16 12:45:02,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 57.27272727272727) internal successors, (630), 11 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:02,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:02,806 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:02,807 INFO L175 Difference]: Start difference. First operand has 253 places, 263 transitions, 3378 flow. Second operand 11 states and 630 transitions. [2022-11-16 12:45:02,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 352 transitions, 4996 flow [2022-11-16 12:45:02,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 352 transitions, 4832 flow, removed 44 selfloop flow, removed 6 redundant places. [2022-11-16 12:45:02,921 INFO L231 Difference]: Finished difference. Result has 262 places, 278 transitions, 3648 flow [2022-11-16 12:45:02,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3648, PETRI_PLACES=262, PETRI_TRANSITIONS=278} [2022-11-16 12:45:02,922 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 186 predicate places. [2022-11-16 12:45:02,923 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 278 transitions, 3648 flow [2022-11-16 12:45:02,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:02,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:02,923 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:02,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:45:02,924 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:02,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2143238203, now seen corresponding path program 12 times [2022-11-16 12:45:02,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:02,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738037383] [2022-11-16 12:45:02,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:02,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:03,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738037383] [2022-11-16 12:45:03,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738037383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:03,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:03,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604265319] [2022-11-16 12:45:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:03,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:03,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 278 transitions, 3648 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:03,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:03,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:03,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:04,578 INFO L130 PetriNetUnfolder]: 343/2075 cut-off events. [2022-11-16 12:45:04,578 INFO L131 PetriNetUnfolder]: For 15257/15348 co-relation queries the response was YES. [2022-11-16 12:45:04,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8210 conditions, 2075 events. 343/2075 cut-off events. For 15257/15348 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20743 event pairs, 98 based on Foata normal form. 28/2084 useless extension candidates. Maximal degree in co-relation 8077. Up to 292 conditions per place. [2022-11-16 12:45:04,603 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 223 selfloop transitions, 53 changer transitions 0/336 dead transitions. [2022-11-16 12:45:04,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 336 transitions, 4836 flow [2022-11-16 12:45:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:04,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 617 transitions. [2022-11-16 12:45:04,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683686176836861 [2022-11-16 12:45:04,607 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 617 transitions. [2022-11-16 12:45:04,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 617 transitions. [2022-11-16 12:45:04,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:04,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 617 transitions. [2022-11-16 12:45:04,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.09090909090909) internal successors, (617), 11 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:04,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:04,612 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:04,613 INFO L175 Difference]: Start difference. First operand has 262 places, 278 transitions, 3648 flow. Second operand 11 states and 617 transitions. [2022-11-16 12:45:04,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 336 transitions, 4836 flow [2022-11-16 12:45:04,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 336 transitions, 4758 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-11-16 12:45:04,722 INFO L231 Difference]: Finished difference. Result has 272 places, 288 transitions, 3935 flow [2022-11-16 12:45:04,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3935, PETRI_PLACES=272, PETRI_TRANSITIONS=288} [2022-11-16 12:45:04,723 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 196 predicate places. [2022-11-16 12:45:04,724 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 288 transitions, 3935 flow [2022-11-16 12:45:04,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:04,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:04,725 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:04,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:45:04,725 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash -684527419, now seen corresponding path program 13 times [2022-11-16 12:45:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:04,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877870508] [2022-11-16 12:45:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:04,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:05,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:05,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877870508] [2022-11-16 12:45:05,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877870508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:05,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:05,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:05,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567338723] [2022-11-16 12:45:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:05,125 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:05,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 288 transitions, 3935 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:05,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:05,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:05,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:06,260 INFO L130 PetriNetUnfolder]: 340/2084 cut-off events. [2022-11-16 12:45:06,260 INFO L131 PetriNetUnfolder]: For 16505/16600 co-relation queries the response was YES. [2022-11-16 12:45:06,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2084 events. 340/2084 cut-off events. For 16505/16600 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 20907 event pairs, 94 based on Foata normal form. 31/2097 useless extension candidates. Maximal degree in co-relation 8225. Up to 284 conditions per place. [2022-11-16 12:45:06,283 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 232 selfloop transitions, 52 changer transitions 0/344 dead transitions. [2022-11-16 12:45:06,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 344 transitions, 5103 flow [2022-11-16 12:45:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 623 transitions. [2022-11-16 12:45:06,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775840597758406 [2022-11-16 12:45:06,286 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 623 transitions. [2022-11-16 12:45:06,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 623 transitions. [2022-11-16 12:45:06,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:06,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 623 transitions. [2022-11-16 12:45:06,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.63636363636363) internal successors, (623), 11 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:06,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:06,306 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:06,306 INFO L175 Difference]: Start difference. First operand has 272 places, 288 transitions, 3935 flow. Second operand 11 states and 623 transitions. [2022-11-16 12:45:06,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 344 transitions, 5103 flow [2022-11-16 12:45:06,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 344 transitions, 5018 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-11-16 12:45:06,423 INFO L231 Difference]: Finished difference. Result has 281 places, 298 transitions, 4256 flow [2022-11-16 12:45:06,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4256, PETRI_PLACES=281, PETRI_TRANSITIONS=298} [2022-11-16 12:45:06,425 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 205 predicate places. [2022-11-16 12:45:06,425 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 298 transitions, 4256 flow [2022-11-16 12:45:06,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:06,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:06,426 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:06,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:45:06,426 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash 42079407, now seen corresponding path program 14 times [2022-11-16 12:45:06,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:06,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60008193] [2022-11-16 12:45:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:06,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:06,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:06,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60008193] [2022-11-16 12:45:06,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60008193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:06,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:06,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403769087] [2022-11-16 12:45:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:06,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:06,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:06,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:06,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 298 transitions, 4256 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:06,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:06,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:06,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:08,014 INFO L130 PetriNetUnfolder]: 330/2006 cut-off events. [2022-11-16 12:45:08,014 INFO L131 PetriNetUnfolder]: For 16408/16498 co-relation queries the response was YES. [2022-11-16 12:45:08,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 2006 events. 330/2006 cut-off events. For 16408/16498 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 19866 event pairs, 94 based on Foata normal form. 22/2012 useless extension candidates. Maximal degree in co-relation 8051. Up to 284 conditions per place. [2022-11-16 12:45:08,039 INFO L137 encePairwiseOnDemand]: 61/73 looper letters, 235 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2022-11-16 12:45:08,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 343 transitions, 5169 flow [2022-11-16 12:45:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 621 transitions. [2022-11-16 12:45:08,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7733499377334994 [2022-11-16 12:45:08,050 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 621 transitions. [2022-11-16 12:45:08,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 621 transitions. [2022-11-16 12:45:08,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:08,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 621 transitions. [2022-11-16 12:45:08,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:08,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:08,059 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:08,059 INFO L175 Difference]: Start difference. First operand has 281 places, 298 transitions, 4256 flow. Second operand 11 states and 621 transitions. [2022-11-16 12:45:08,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 343 transitions, 5169 flow [2022-11-16 12:45:08,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 343 transitions, 5048 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-11-16 12:45:08,185 INFO L231 Difference]: Finished difference. Result has 287 places, 300 transitions, 4268 flow [2022-11-16 12:45:08,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4268, PETRI_PLACES=287, PETRI_TRANSITIONS=300} [2022-11-16 12:45:08,186 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 211 predicate places. [2022-11-16 12:45:08,186 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 300 transitions, 4268 flow [2022-11-16 12:45:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:08,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:08,187 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:08,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:45:08,187 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash -820669375, now seen corresponding path program 15 times [2022-11-16 12:45:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:08,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671721273] [2022-11-16 12:45:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:08,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:08,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671721273] [2022-11-16 12:45:08,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671721273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:08,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:08,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:08,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007973614] [2022-11-16 12:45:08,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:08,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:08,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:08,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:08,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:08,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:08,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 300 transitions, 4268 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:08,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:08,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:08,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:09,714 INFO L130 PetriNetUnfolder]: 317/1945 cut-off events. [2022-11-16 12:45:09,714 INFO L131 PetriNetUnfolder]: For 15355/15436 co-relation queries the response was YES. [2022-11-16 12:45:09,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1945 events. 317/1945 cut-off events. For 15355/15436 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 19137 event pairs, 85 based on Foata normal form. 30/1961 useless extension candidates. Maximal degree in co-relation 7793. Up to 284 conditions per place. [2022-11-16 12:45:09,735 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 242 selfloop transitions, 53 changer transitions 0/355 dead transitions. [2022-11-16 12:45:09,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 355 transitions, 5356 flow [2022-11-16 12:45:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:45:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:45:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 676 transitions. [2022-11-16 12:45:09,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.771689497716895 [2022-11-16 12:45:09,737 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 676 transitions. [2022-11-16 12:45:09,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 676 transitions. [2022-11-16 12:45:09,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:09,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 676 transitions. [2022-11-16 12:45:09,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.333333333333336) internal successors, (676), 12 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:09,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:09,741 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:09,742 INFO L175 Difference]: Start difference. First operand has 287 places, 300 transitions, 4268 flow. Second operand 12 states and 676 transitions. [2022-11-16 12:45:09,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 355 transitions, 5356 flow [2022-11-16 12:45:09,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 355 transitions, 5246 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-16 12:45:09,869 INFO L231 Difference]: Finished difference. Result has 296 places, 305 transitions, 4444 flow [2022-11-16 12:45:09,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4444, PETRI_PLACES=296, PETRI_TRANSITIONS=305} [2022-11-16 12:45:09,870 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 220 predicate places. [2022-11-16 12:45:09,870 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 305 transitions, 4444 flow [2022-11-16 12:45:09,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:09,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:09,871 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:09,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:45:09,871 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:09,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1942622669, now seen corresponding path program 16 times [2022-11-16 12:45:09,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:09,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534994899] [2022-11-16 12:45:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:09,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:10,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:10,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534994899] [2022-11-16 12:45:10,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534994899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:10,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:10,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:10,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870008049] [2022-11-16 12:45:10,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:10,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:10,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:10,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:10,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:10,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:10,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 305 transitions, 4444 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:10,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:10,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:10,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:11,365 INFO L130 PetriNetUnfolder]: 307/1889 cut-off events. [2022-11-16 12:45:11,365 INFO L131 PetriNetUnfolder]: For 14997/15071 co-relation queries the response was YES. [2022-11-16 12:45:11,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1889 events. 307/1889 cut-off events. For 14997/15071 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 18331 event pairs, 46 based on Foata normal form. 25/1902 useless extension candidates. Maximal degree in co-relation 7625. Up to 156 conditions per place. [2022-11-16 12:45:11,382 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 200 selfloop transitions, 107 changer transitions 0/367 dead transitions. [2022-11-16 12:45:11,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 367 transitions, 5485 flow [2022-11-16 12:45:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:45:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:45:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 939 transitions. [2022-11-16 12:45:11,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7566478646253022 [2022-11-16 12:45:11,385 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 939 transitions. [2022-11-16 12:45:11,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 939 transitions. [2022-11-16 12:45:11,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:11,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 939 transitions. [2022-11-16 12:45:11,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.23529411764706) internal successors, (939), 17 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:11,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:11,390 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:11,390 INFO L175 Difference]: Start difference. First operand has 296 places, 305 transitions, 4444 flow. Second operand 17 states and 939 transitions. [2022-11-16 12:45:11,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 367 transitions, 5485 flow [2022-11-16 12:45:11,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 367 transitions, 5394 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-11-16 12:45:11,527 INFO L231 Difference]: Finished difference. Result has 308 places, 307 transitions, 4603 flow [2022-11-16 12:45:11,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4603, PETRI_PLACES=308, PETRI_TRANSITIONS=307} [2022-11-16 12:45:11,528 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 232 predicate places. [2022-11-16 12:45:11,528 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 307 transitions, 4603 flow [2022-11-16 12:45:11,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:11,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:11,528 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:11,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:45:11,529 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:11,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1935666979, now seen corresponding path program 17 times [2022-11-16 12:45:11,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:11,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417947115] [2022-11-16 12:45:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:11,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:11,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:11,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417947115] [2022-11-16 12:45:11,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417947115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:11,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:11,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:11,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636203042] [2022-11-16 12:45:11,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:11,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:11,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:11,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:11,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:11,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 307 transitions, 4603 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:11,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:11,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:11,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:13,064 INFO L130 PetriNetUnfolder]: 311/1952 cut-off events. [2022-11-16 12:45:13,064 INFO L131 PetriNetUnfolder]: For 16515/16586 co-relation queries the response was YES. [2022-11-16 12:45:13,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 1952 events. 311/1952 cut-off events. For 16515/16586 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 19214 event pairs, 44 based on Foata normal form. 37/1977 useless extension candidates. Maximal degree in co-relation 7964. Up to 164 conditions per place. [2022-11-16 12:45:13,087 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 191 selfloop transitions, 118 changer transitions 0/369 dead transitions. [2022-11-16 12:45:13,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 369 transitions, 5744 flow [2022-11-16 12:45:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:45:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:45:13,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 888 transitions. [2022-11-16 12:45:13,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7602739726027398 [2022-11-16 12:45:13,091 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 888 transitions. [2022-11-16 12:45:13,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 888 transitions. [2022-11-16 12:45:13,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:13,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 888 transitions. [2022-11-16 12:45:13,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 55.5) internal successors, (888), 16 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:13,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:13,096 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:13,096 INFO L175 Difference]: Start difference. First operand has 308 places, 307 transitions, 4603 flow. Second operand 16 states and 888 transitions. [2022-11-16 12:45:13,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 369 transitions, 5744 flow [2022-11-16 12:45:13,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 369 transitions, 5541 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-11-16 12:45:13,234 INFO L231 Difference]: Finished difference. Result has 316 places, 313 transitions, 4816 flow [2022-11-16 12:45:13,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4816, PETRI_PLACES=316, PETRI_TRANSITIONS=313} [2022-11-16 12:45:13,235 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 240 predicate places. [2022-11-16 12:45:13,235 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 313 transitions, 4816 flow [2022-11-16 12:45:13,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:13,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:13,236 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:13,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:45:13,236 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1029775799, now seen corresponding path program 18 times [2022-11-16 12:45:13,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:13,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190499293] [2022-11-16 12:45:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:13,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190499293] [2022-11-16 12:45:13,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190499293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:13,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:13,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:13,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101602788] [2022-11-16 12:45:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:13,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:13,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:13,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:13,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:13,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:13,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 313 transitions, 4816 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:13,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:13,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:13,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:14,785 INFO L130 PetriNetUnfolder]: 298/1862 cut-off events. [2022-11-16 12:45:14,785 INFO L131 PetriNetUnfolder]: For 15917/15985 co-relation queries the response was YES. [2022-11-16 12:45:14,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7867 conditions, 1862 events. 298/1862 cut-off events. For 15917/15985 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 18160 event pairs, 79 based on Foata normal form. 26/1878 useless extension candidates. Maximal degree in co-relation 7714. Up to 284 conditions per place. [2022-11-16 12:45:14,799 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 246 selfloop transitions, 51 changer transitions 0/357 dead transitions. [2022-11-16 12:45:14,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 357 transitions, 5674 flow [2022-11-16 12:45:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:45:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:45:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 671 transitions. [2022-11-16 12:45:14,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7659817351598174 [2022-11-16 12:45:14,801 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 671 transitions. [2022-11-16 12:45:14,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 671 transitions. [2022-11-16 12:45:14,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:14,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 671 transitions. [2022-11-16 12:45:14,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 55.916666666666664) internal successors, (671), 12 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:14,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:14,805 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:14,806 INFO L175 Difference]: Start difference. First operand has 316 places, 313 transitions, 4816 flow. Second operand 12 states and 671 transitions. [2022-11-16 12:45:14,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 357 transitions, 5674 flow [2022-11-16 12:45:14,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 357 transitions, 5459 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-11-16 12:45:14,956 INFO L231 Difference]: Finished difference. Result has 320 places, 313 transitions, 4713 flow [2022-11-16 12:45:14,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4713, PETRI_PLACES=320, PETRI_TRANSITIONS=313} [2022-11-16 12:45:14,957 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 244 predicate places. [2022-11-16 12:45:14,958 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 313 transitions, 4713 flow [2022-11-16 12:45:14,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:14,958 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:14,958 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:45:14,959 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:14,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:14,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1618257, now seen corresponding path program 19 times [2022-11-16 12:45:14,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:14,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069942957] [2022-11-16 12:45:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:14,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:15,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069942957] [2022-11-16 12:45:15,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069942957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:15,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:15,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21854415] [2022-11-16 12:45:15,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:15,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:15,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:15,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 313 transitions, 4713 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:15,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:15,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:15,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:16,362 INFO L130 PetriNetUnfolder]: 295/1850 cut-off events. [2022-11-16 12:45:16,362 INFO L131 PetriNetUnfolder]: For 15117/15182 co-relation queries the response was YES. [2022-11-16 12:45:16,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7786 conditions, 1850 events. 295/1850 cut-off events. For 15117/15182 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17956 event pairs, 25 based on Foata normal form. 41/1879 useless extension candidates. Maximal degree in co-relation 7629. Up to 273 conditions per place. [2022-11-16 12:45:16,375 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 150 selfloop transitions, 150 changer transitions 0/360 dead transitions. [2022-11-16 12:45:16,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 360 transitions, 5813 flow [2022-11-16 12:45:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:45:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:45:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 817 transitions. [2022-11-16 12:45:16,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7461187214611872 [2022-11-16 12:45:16,377 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 817 transitions. [2022-11-16 12:45:16,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 817 transitions. [2022-11-16 12:45:16,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:16,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 817 transitions. [2022-11-16 12:45:16,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.46666666666667) internal successors, (817), 15 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:16,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:16,382 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:16,382 INFO L175 Difference]: Start difference. First operand has 320 places, 313 transitions, 4713 flow. Second operand 15 states and 817 transitions. [2022-11-16 12:45:16,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 360 transitions, 5813 flow [2022-11-16 12:45:16,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 360 transitions, 5683 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-11-16 12:45:16,493 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 5054 flow [2022-11-16 12:45:16,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5054, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2022-11-16 12:45:16,494 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 254 predicate places. [2022-11-16 12:45:16,495 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 5054 flow [2022-11-16 12:45:16,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:16,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:16,495 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:16,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:45:16,496 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:16,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash 728225083, now seen corresponding path program 20 times [2022-11-16 12:45:16,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:16,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030297468] [2022-11-16 12:45:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:16,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:16,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:16,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030297468] [2022-11-16 12:45:16,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030297468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:16,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:16,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246566856] [2022-11-16 12:45:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:16,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:16,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:16,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 5054 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:16,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:16,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:18,027 INFO L130 PetriNetUnfolder]: 285/1796 cut-off events. [2022-11-16 12:45:18,027 INFO L131 PetriNetUnfolder]: For 15668/15732 co-relation queries the response was YES. [2022-11-16 12:45:18,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7771 conditions, 1796 events. 285/1796 cut-off events. For 15668/15732 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17302 event pairs, 26 based on Foata normal form. 37/1823 useless extension candidates. Maximal degree in co-relation 7611. Up to 273 conditions per place. [2022-11-16 12:45:18,042 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 153 selfloop transitions, 146 changer transitions 0/359 dead transitions. [2022-11-16 12:45:18,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 359 transitions, 6036 flow [2022-11-16 12:45:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:45:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:45:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 864 transitions. [2022-11-16 12:45:18,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7397260273972602 [2022-11-16 12:45:18,045 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 864 transitions. [2022-11-16 12:45:18,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 864 transitions. [2022-11-16 12:45:18,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:18,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 864 transitions. [2022-11-16 12:45:18,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.0) internal successors, (864), 16 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:18,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:18,049 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:18,050 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 5054 flow. Second operand 16 states and 864 transitions. [2022-11-16 12:45:18,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 359 transitions, 6036 flow [2022-11-16 12:45:18,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 359 transitions, 5713 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-11-16 12:45:18,159 INFO L231 Difference]: Finished difference. Result has 337 places, 320 transitions, 5069 flow [2022-11-16 12:45:18,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4682, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5069, PETRI_PLACES=337, PETRI_TRANSITIONS=320} [2022-11-16 12:45:18,160 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 261 predicate places. [2022-11-16 12:45:18,160 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 320 transitions, 5069 flow [2022-11-16 12:45:18,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:18,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:18,160 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:18,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:45:18,161 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1684303669, now seen corresponding path program 21 times [2022-11-16 12:45:18,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:18,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852232847] [2022-11-16 12:45:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:18,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:18,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:18,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852232847] [2022-11-16 12:45:18,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852232847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:18,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:18,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51190973] [2022-11-16 12:45:18,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:18,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:18,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:18,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:18,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:18,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 320 transitions, 5069 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:18,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:18,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:18,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:19,586 INFO L130 PetriNetUnfolder]: 289/1831 cut-off events. [2022-11-16 12:45:19,586 INFO L131 PetriNetUnfolder]: For 15674/15747 co-relation queries the response was YES. [2022-11-16 12:45:19,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 1831 events. 289/1831 cut-off events. For 15674/15747 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17772 event pairs, 32 based on Foata normal form. 45/1868 useless extension candidates. Maximal degree in co-relation 7745. Up to 252 conditions per place. [2022-11-16 12:45:19,599 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 181 selfloop transitions, 128 changer transitions 0/369 dead transitions. [2022-11-16 12:45:19,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 369 transitions, 6118 flow [2022-11-16 12:45:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:45:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:45:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 822 transitions. [2022-11-16 12:45:19,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7506849315068493 [2022-11-16 12:45:19,602 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 822 transitions. [2022-11-16 12:45:19,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 822 transitions. [2022-11-16 12:45:19,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:19,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 822 transitions. [2022-11-16 12:45:19,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.8) internal successors, (822), 15 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:19,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:19,604 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:19,604 INFO L175 Difference]: Start difference. First operand has 337 places, 320 transitions, 5069 flow. Second operand 15 states and 822 transitions. [2022-11-16 12:45:19,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 369 transitions, 6118 flow [2022-11-16 12:45:19,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 369 transitions, 5925 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-16 12:45:19,714 INFO L231 Difference]: Finished difference. Result has 346 places, 327 transitions, 5352 flow [2022-11-16 12:45:19,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5352, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2022-11-16 12:45:19,715 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 270 predicate places. [2022-11-16 12:45:19,716 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 5352 flow [2022-11-16 12:45:19,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:19,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:19,716 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:45:19,717 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:19,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1643361633, now seen corresponding path program 22 times [2022-11-16 12:45:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:19,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632730469] [2022-11-16 12:45:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:19,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:20,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:20,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632730469] [2022-11-16 12:45:20,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632730469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:20,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:20,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815017568] [2022-11-16 12:45:20,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:20,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:20,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:20,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 5352 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:20,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:20,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:20,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:21,298 INFO L130 PetriNetUnfolder]: 310/2003 cut-off events. [2022-11-16 12:45:21,298 INFO L131 PetriNetUnfolder]: For 18598/18674 co-relation queries the response was YES. [2022-11-16 12:45:21,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8686 conditions, 2003 events. 310/2003 cut-off events. For 18598/18674 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20063 event pairs, 69 based on Foata normal form. 21/2013 useless extension candidates. Maximal degree in co-relation 8519. Up to 401 conditions per place. [2022-11-16 12:45:21,312 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 273 selfloop transitions, 53 changer transitions 0/386 dead transitions. [2022-11-16 12:45:21,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 386 transitions, 6663 flow [2022-11-16 12:45:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 623 transitions. [2022-11-16 12:45:21,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775840597758406 [2022-11-16 12:45:21,314 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 623 transitions. [2022-11-16 12:45:21,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 623 transitions. [2022-11-16 12:45:21,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:21,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 623 transitions. [2022-11-16 12:45:21,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.63636363636363) internal successors, (623), 11 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:21,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:21,316 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:21,317 INFO L175 Difference]: Start difference. First operand has 346 places, 327 transitions, 5352 flow. Second operand 11 states and 623 transitions. [2022-11-16 12:45:21,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 386 transitions, 6663 flow [2022-11-16 12:45:21,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 386 transitions, 6396 flow, removed 45 selfloop flow, removed 8 redundant places. [2022-11-16 12:45:21,454 INFO L231 Difference]: Finished difference. Result has 352 places, 336 transitions, 5456 flow [2022-11-16 12:45:21,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5146, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5456, PETRI_PLACES=352, PETRI_TRANSITIONS=336} [2022-11-16 12:45:21,455 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 276 predicate places. [2022-11-16 12:45:21,456 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 336 transitions, 5456 flow [2022-11-16 12:45:21,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:21,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:21,456 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:21,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:45:21,456 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:21,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1081385977, now seen corresponding path program 23 times [2022-11-16 12:45:21,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:21,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218757981] [2022-11-16 12:45:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:21,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:21,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:21,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218757981] [2022-11-16 12:45:21,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218757981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:21,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:21,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:21,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136062098] [2022-11-16 12:45:21,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:21,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:21,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:21,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:21,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:21,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:21,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 336 transitions, 5456 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:21,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:21,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:21,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:23,097 INFO L130 PetriNetUnfolder]: 310/2005 cut-off events. [2022-11-16 12:45:23,097 INFO L131 PetriNetUnfolder]: For 17848/17924 co-relation queries the response was YES. [2022-11-16 12:45:23,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8623 conditions, 2005 events. 310/2005 cut-off events. For 17848/17924 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20101 event pairs, 71 based on Foata normal form. 24/2018 useless extension candidates. Maximal degree in co-relation 8452. Up to 401 conditions per place. [2022-11-16 12:45:23,119 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 258 selfloop transitions, 62 changer transitions 0/380 dead transitions. [2022-11-16 12:45:23,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 380 transitions, 6544 flow [2022-11-16 12:45:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-16 12:45:23,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-16 12:45:23,123 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-16 12:45:23,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-16 12:45:23,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:23,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-16 12:45:23,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:23,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:23,127 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:23,127 INFO L175 Difference]: Start difference. First operand has 352 places, 336 transitions, 5456 flow. Second operand 11 states and 615 transitions. [2022-11-16 12:45:23,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 380 transitions, 6544 flow [2022-11-16 12:45:23,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 380 transitions, 6388 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-11-16 12:45:23,311 INFO L231 Difference]: Finished difference. Result has 359 places, 342 transitions, 5572 flow [2022-11-16 12:45:23,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5301, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5572, PETRI_PLACES=359, PETRI_TRANSITIONS=342} [2022-11-16 12:45:23,312 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 283 predicate places. [2022-11-16 12:45:23,312 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 342 transitions, 5572 flow [2022-11-16 12:45:23,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:23,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:23,313 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:23,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:45:23,313 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:23,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1924998837, now seen corresponding path program 24 times [2022-11-16 12:45:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:23,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360854692] [2022-11-16 12:45:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:23,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:23,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360854692] [2022-11-16 12:45:23,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360854692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:23,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:23,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:23,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466688577] [2022-11-16 12:45:23,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:23,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:23,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:23,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:23,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:23,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 342 transitions, 5572 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:23,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:23,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:23,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:24,914 INFO L130 PetriNetUnfolder]: 297/1938 cut-off events. [2022-11-16 12:45:24,914 INFO L131 PetriNetUnfolder]: For 17166/17239 co-relation queries the response was YES. [2022-11-16 12:45:24,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8370 conditions, 1938 events. 297/1938 cut-off events. For 17166/17239 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19251 event pairs, 65 based on Foata normal form. 27/1957 useless extension candidates. Maximal degree in co-relation 8195. Up to 401 conditions per place. [2022-11-16 12:45:24,927 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 268 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2022-11-16 12:45:24,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 384 transitions, 6556 flow [2022-11-16 12:45:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 620 transitions. [2022-11-16 12:45:24,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.772104607721046 [2022-11-16 12:45:24,928 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 620 transitions. [2022-11-16 12:45:24,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 620 transitions. [2022-11-16 12:45:24,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:24,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 620 transitions. [2022-11-16 12:45:24,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.36363636363637) internal successors, (620), 11 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:24,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:24,930 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:24,931 INFO L175 Difference]: Start difference. First operand has 359 places, 342 transitions, 5572 flow. Second operand 11 states and 620 transitions. [2022-11-16 12:45:24,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 384 transitions, 6556 flow [2022-11-16 12:45:25,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 384 transitions, 6443 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-11-16 12:45:25,131 INFO L231 Difference]: Finished difference. Result has 366 places, 345 transitions, 5658 flow [2022-11-16 12:45:25,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5384, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5658, PETRI_PLACES=366, PETRI_TRANSITIONS=345} [2022-11-16 12:45:25,137 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 290 predicate places. [2022-11-16 12:45:25,137 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 345 transitions, 5658 flow [2022-11-16 12:45:25,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:25,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:25,138 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:25,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:45:25,138 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash 354779151, now seen corresponding path program 25 times [2022-11-16 12:45:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:25,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267991929] [2022-11-16 12:45:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:25,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:25,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267991929] [2022-11-16 12:45:25,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267991929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:25,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:25,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:25,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958723754] [2022-11-16 12:45:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:25,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:25,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:25,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:25,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 345 transitions, 5658 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:25,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:25,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:25,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:26,560 INFO L130 PetriNetUnfolder]: 284/1863 cut-off events. [2022-11-16 12:45:26,560 INFO L131 PetriNetUnfolder]: For 16240/16312 co-relation queries the response was YES. [2022-11-16 12:45:26,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8107 conditions, 1863 events. 284/1863 cut-off events. For 16240/16312 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 18349 event pairs, 63 based on Foata normal form. 29/1886 useless extension candidates. Maximal degree in co-relation 7929. Up to 401 conditions per place. [2022-11-16 12:45:26,581 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 259 selfloop transitions, 60 changer transitions 0/379 dead transitions. [2022-11-16 12:45:26,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 379 transitions, 6484 flow [2022-11-16 12:45:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 618 transitions. [2022-11-16 12:45:26,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7696139476961394 [2022-11-16 12:45:26,584 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 618 transitions. [2022-11-16 12:45:26,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 618 transitions. [2022-11-16 12:45:26,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:26,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 618 transitions. [2022-11-16 12:45:26,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.18181818181818) internal successors, (618), 11 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:26,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:26,587 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:26,587 INFO L175 Difference]: Start difference. First operand has 366 places, 345 transitions, 5658 flow. Second operand 11 states and 618 transitions. [2022-11-16 12:45:26,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 379 transitions, 6484 flow [2022-11-16 12:45:26,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 379 transitions, 6376 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-11-16 12:45:26,767 INFO L231 Difference]: Finished difference. Result has 369 places, 344 transitions, 5642 flow [2022-11-16 12:45:26,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5642, PETRI_PLACES=369, PETRI_TRANSITIONS=344} [2022-11-16 12:45:26,768 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 293 predicate places. [2022-11-16 12:45:26,768 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 344 transitions, 5642 flow [2022-11-16 12:45:26,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:26,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:26,769 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:26,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:45:26,769 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:26,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash -884975625, now seen corresponding path program 26 times [2022-11-16 12:45:26,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:26,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223739652] [2022-11-16 12:45:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:26,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:27,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223739652] [2022-11-16 12:45:27,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223739652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:27,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:27,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382908884] [2022-11-16 12:45:27,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:27,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:27,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:27,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:27,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:27,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 344 transitions, 5642 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:27,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:27,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:27,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:28,282 INFO L130 PetriNetUnfolder]: 292/1946 cut-off events. [2022-11-16 12:45:28,282 INFO L131 PetriNetUnfolder]: For 16725/16801 co-relation queries the response was YES. [2022-11-16 12:45:28,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8425 conditions, 1946 events. 292/1946 cut-off events. For 16725/16801 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19440 event pairs, 42 based on Foata normal form. 27/1967 useless extension candidates. Maximal degree in co-relation 8246. Up to 303 conditions per place. [2022-11-16 12:45:28,307 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 253 selfloop transitions, 101 changer transitions 0/414 dead transitions. [2022-11-16 12:45:28,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 414 transitions, 7011 flow [2022-11-16 12:45:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:45:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:45:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 836 transitions. [2022-11-16 12:45:28,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7634703196347032 [2022-11-16 12:45:28,309 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 836 transitions. [2022-11-16 12:45:28,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 836 transitions. [2022-11-16 12:45:28,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:28,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 836 transitions. [2022-11-16 12:45:28,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.733333333333334) internal successors, (836), 15 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:28,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:28,314 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:28,314 INFO L175 Difference]: Start difference. First operand has 369 places, 344 transitions, 5642 flow. Second operand 15 states and 836 transitions. [2022-11-16 12:45:28,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 414 transitions, 7011 flow [2022-11-16 12:45:28,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 414 transitions, 6904 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-16 12:45:28,520 INFO L231 Difference]: Finished difference. Result has 384 places, 357 transitions, 6045 flow [2022-11-16 12:45:28,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5539, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6045, PETRI_PLACES=384, PETRI_TRANSITIONS=357} [2022-11-16 12:45:28,520 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 308 predicate places. [2022-11-16 12:45:28,521 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 357 transitions, 6045 flow [2022-11-16 12:45:28,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:28,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:28,521 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:28,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:45:28,521 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash 897919359, now seen corresponding path program 27 times [2022-11-16 12:45:28,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:28,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393757252] [2022-11-16 12:45:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:28,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:28,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393757252] [2022-11-16 12:45:28,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393757252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:28,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:28,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094238172] [2022-11-16 12:45:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:28,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:28,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:28,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 357 transitions, 6045 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:28,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:28,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:28,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:30,112 INFO L130 PetriNetUnfolder]: 313/2082 cut-off events. [2022-11-16 12:45:30,112 INFO L131 PetriNetUnfolder]: For 19461/19540 co-relation queries the response was YES. [2022-11-16 12:45:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9200 conditions, 2082 events. 313/2082 cut-off events. For 19461/19540 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 21126 event pairs, 38 based on Foata normal form. 32/2105 useless extension candidates. Maximal degree in co-relation 9014. Up to 303 conditions per place. [2022-11-16 12:45:30,133 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 230 selfloop transitions, 131 changer transitions 0/421 dead transitions. [2022-11-16 12:45:30,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 421 transitions, 7394 flow [2022-11-16 12:45:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:45:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:45:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 931 transitions. [2022-11-16 12:45:30,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.750201450443191 [2022-11-16 12:45:30,136 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 931 transitions. [2022-11-16 12:45:30,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 931 transitions. [2022-11-16 12:45:30,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:30,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 931 transitions. [2022-11-16 12:45:30,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:30,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:30,140 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:30,140 INFO L175 Difference]: Start difference. First operand has 384 places, 357 transitions, 6045 flow. Second operand 17 states and 931 transitions. [2022-11-16 12:45:30,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 421 transitions, 7394 flow [2022-11-16 12:45:30,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 421 transitions, 7209 flow, removed 44 selfloop flow, removed 8 redundant places. [2022-11-16 12:45:30,340 INFO L231 Difference]: Finished difference. Result has 396 places, 369 transitions, 6446 flow [2022-11-16 12:45:30,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6446, PETRI_PLACES=396, PETRI_TRANSITIONS=369} [2022-11-16 12:45:30,341 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 320 predicate places. [2022-11-16 12:45:30,342 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 369 transitions, 6446 flow [2022-11-16 12:45:30,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:30,342 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:30,342 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:30,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:45:30,343 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:30,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:30,343 INFO L85 PathProgramCache]: Analyzing trace with hash -173935847, now seen corresponding path program 28 times [2022-11-16 12:45:30,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:30,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255202232] [2022-11-16 12:45:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:30,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:30,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255202232] [2022-11-16 12:45:30,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255202232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:30,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:30,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818502652] [2022-11-16 12:45:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:30,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:30,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:30,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:30,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 369 transitions, 6446 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:30,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:30,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:30,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:32,036 INFO L130 PetriNetUnfolder]: 343/2313 cut-off events. [2022-11-16 12:45:32,036 INFO L131 PetriNetUnfolder]: For 23388/23470 co-relation queries the response was YES. [2022-11-16 12:45:32,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 2313 events. 343/2313 cut-off events. For 23388/23470 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 24167 event pairs, 46 based on Foata normal form. 21/2322 useless extension candidates. Maximal degree in co-relation 10096. Up to 303 conditions per place. [2022-11-16 12:45:32,056 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 286 selfloop transitions, 114 changer transitions 0/460 dead transitions. [2022-11-16 12:45:32,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 460 transitions, 8287 flow [2022-11-16 12:45:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:45:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:45:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 898 transitions. [2022-11-16 12:45:32,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7688356164383562 [2022-11-16 12:45:32,058 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 898 transitions. [2022-11-16 12:45:32,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 898 transitions. [2022-11-16 12:45:32,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:32,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 898 transitions. [2022-11-16 12:45:32,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 56.125) internal successors, (898), 16 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:32,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:32,061 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:32,061 INFO L175 Difference]: Start difference. First operand has 396 places, 369 transitions, 6446 flow. Second operand 16 states and 898 transitions. [2022-11-16 12:45:32,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 460 transitions, 8287 flow [2022-11-16 12:45:32,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 460 transitions, 7921 flow, removed 31 selfloop flow, removed 10 redundant places. [2022-11-16 12:45:32,230 INFO L231 Difference]: Finished difference. Result has 407 places, 386 transitions, 6772 flow [2022-11-16 12:45:32,231 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6772, PETRI_PLACES=407, PETRI_TRANSITIONS=386} [2022-11-16 12:45:32,231 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 331 predicate places. [2022-11-16 12:45:32,231 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 386 transitions, 6772 flow [2022-11-16 12:45:32,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:32,232 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:32,232 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:32,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:45:32,232 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:32,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:32,233 INFO L85 PathProgramCache]: Analyzing trace with hash -954566733, now seen corresponding path program 29 times [2022-11-16 12:45:32,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:32,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962481891] [2022-11-16 12:45:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:32,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:32,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962481891] [2022-11-16 12:45:32,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962481891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:32,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:32,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:32,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093585640] [2022-11-16 12:45:32,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:32,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:32,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:32,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:32,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:32,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 386 transitions, 6772 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:32,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:32,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:32,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:33,922 INFO L130 PetriNetUnfolder]: 347/2377 cut-off events. [2022-11-16 12:45:33,922 INFO L131 PetriNetUnfolder]: For 23625/23715 co-relation queries the response was YES. [2022-11-16 12:45:33,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10484 conditions, 2377 events. 347/2377 cut-off events. For 23625/23715 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 25144 event pairs, 69 based on Foata normal form. 32/2399 useless extension candidates. Maximal degree in co-relation 10290. Up to 399 conditions per place. [2022-11-16 12:45:33,939 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 318 selfloop transitions, 62 changer transitions 0/440 dead transitions. [2022-11-16 12:45:33,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 440 transitions, 8146 flow [2022-11-16 12:45:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:45:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:45:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 672 transitions. [2022-11-16 12:45:33,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7671232876712328 [2022-11-16 12:45:33,943 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 672 transitions. [2022-11-16 12:45:33,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 672 transitions. [2022-11-16 12:45:33,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:33,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 672 transitions. [2022-11-16 12:45:33,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.0) internal successors, (672), 12 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:33,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:33,944 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:33,945 INFO L175 Difference]: Start difference. First operand has 407 places, 386 transitions, 6772 flow. Second operand 12 states and 672 transitions. [2022-11-16 12:45:33,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 440 transitions, 8146 flow [2022-11-16 12:45:34,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 440 transitions, 7875 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-11-16 12:45:34,130 INFO L231 Difference]: Finished difference. Result has 416 places, 396 transitions, 6936 flow [2022-11-16 12:45:34,131 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6504, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6936, PETRI_PLACES=416, PETRI_TRANSITIONS=396} [2022-11-16 12:45:34,131 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 340 predicate places. [2022-11-16 12:45:34,131 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 396 transitions, 6936 flow [2022-11-16 12:45:34,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:34,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:34,131 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:34,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:45:34,131 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1306141661, now seen corresponding path program 30 times [2022-11-16 12:45:34,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:34,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516156752] [2022-11-16 12:45:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:34,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:34,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516156752] [2022-11-16 12:45:34,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516156752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:34,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:34,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:34,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502807241] [2022-11-16 12:45:34,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:34,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:34,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:34,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:34,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:34,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:34,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 396 transitions, 6936 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:34,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:34,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:34,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:35,870 INFO L130 PetriNetUnfolder]: 347/2380 cut-off events. [2022-11-16 12:45:35,871 INFO L131 PetriNetUnfolder]: For 23730/23818 co-relation queries the response was YES. [2022-11-16 12:45:35,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10539 conditions, 2380 events. 347/2380 cut-off events. For 23730/23818 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 25202 event pairs, 73 based on Foata normal form. 20/2390 useless extension candidates. Maximal degree in co-relation 10339. Up to 399 conditions per place. [2022-11-16 12:45:35,902 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 339 selfloop transitions, 47 changer transitions 0/446 dead transitions. [2022-11-16 12:45:35,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 446 transitions, 8210 flow [2022-11-16 12:45:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2022-11-16 12:45:35,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7745952677459527 [2022-11-16 12:45:35,904 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2022-11-16 12:45:35,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2022-11-16 12:45:35,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:35,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2022-11-16 12:45:35,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:35,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:35,907 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:35,908 INFO L175 Difference]: Start difference. First operand has 416 places, 396 transitions, 6936 flow. Second operand 11 states and 622 transitions. [2022-11-16 12:45:35,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 446 transitions, 8210 flow [2022-11-16 12:45:36,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 446 transitions, 8096 flow, removed 33 selfloop flow, removed 5 redundant places. [2022-11-16 12:45:36,202 INFO L231 Difference]: Finished difference. Result has 425 places, 402 transitions, 7113 flow [2022-11-16 12:45:36,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6822, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7113, PETRI_PLACES=425, PETRI_TRANSITIONS=402} [2022-11-16 12:45:36,203 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 349 predicate places. [2022-11-16 12:45:36,203 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 402 transitions, 7113 flow [2022-11-16 12:45:36,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:36,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:36,203 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:36,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:45:36,204 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:36,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1983801265, now seen corresponding path program 31 times [2022-11-16 12:45:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:36,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113525776] [2022-11-16 12:45:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:36,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:36,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113525776] [2022-11-16 12:45:36,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113525776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:36,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:36,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:45:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303816190] [2022-11-16 12:45:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:36,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:45:36,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:45:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:45:36,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:36,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 402 transitions, 7113 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:36,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:36,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:36,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:37,647 INFO L130 PetriNetUnfolder]: 334/2306 cut-off events. [2022-11-16 12:45:37,647 INFO L131 PetriNetUnfolder]: For 23501/23586 co-relation queries the response was YES. [2022-11-16 12:45:37,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 2306 events. 334/2306 cut-off events. For 23501/23586 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24245 event pairs, 74 based on Foata normal form. 19/2317 useless extension candidates. Maximal degree in co-relation 10080. Up to 399 conditions per place. [2022-11-16 12:45:37,671 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 343 selfloop transitions, 44 changer transitions 0/447 dead transitions. [2022-11-16 12:45:37,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 447 transitions, 8252 flow [2022-11-16 12:45:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:37,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 625 transitions. [2022-11-16 12:45:37,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7783312577833126 [2022-11-16 12:45:37,673 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 625 transitions. [2022-11-16 12:45:37,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 625 transitions. [2022-11-16 12:45:37,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:37,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 625 transitions. [2022-11-16 12:45:37,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.81818181818182) internal successors, (625), 11 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:37,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:37,675 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:37,675 INFO L175 Difference]: Start difference. First operand has 425 places, 402 transitions, 7113 flow. Second operand 11 states and 625 transitions. [2022-11-16 12:45:37,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 447 transitions, 8252 flow [2022-11-16 12:45:37,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 447 transitions, 8095 flow, removed 54 selfloop flow, removed 6 redundant places. [2022-11-16 12:45:37,973 INFO L231 Difference]: Finished difference. Result has 432 places, 403 transitions, 7099 flow [2022-11-16 12:45:37,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7099, PETRI_PLACES=432, PETRI_TRANSITIONS=403} [2022-11-16 12:45:37,974 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 356 predicate places. [2022-11-16 12:45:37,975 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 403 transitions, 7099 flow [2022-11-16 12:45:37,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:37,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:37,975 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:37,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 12:45:37,976 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash -818424777, now seen corresponding path program 32 times [2022-11-16 12:45:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:37,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756284680] [2022-11-16 12:45:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:37,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:38,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:38,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756284680] [2022-11-16 12:45:38,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756284680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:38,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:38,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504748113] [2022-11-16 12:45:38,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:38,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:38,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 403 transitions, 7099 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:38,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:38,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:38,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:39,537 INFO L130 PetriNetUnfolder]: 321/2227 cut-off events. [2022-11-16 12:45:39,537 INFO L131 PetriNetUnfolder]: For 21516/21602 co-relation queries the response was YES. [2022-11-16 12:45:39,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 2227 events. 321/2227 cut-off events. For 21516/21602 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23253 event pairs, 67 based on Foata normal form. 38/2259 useless extension candidates. Maximal degree in co-relation 9747. Up to 399 conditions per place. [2022-11-16 12:45:39,561 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 301 selfloop transitions, 73 changer transitions 0/434 dead transitions. [2022-11-16 12:45:39,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 434 transitions, 8013 flow [2022-11-16 12:45:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 617 transitions. [2022-11-16 12:45:39,563 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683686176836861 [2022-11-16 12:45:39,563 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 617 transitions. [2022-11-16 12:45:39,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 617 transitions. [2022-11-16 12:45:39,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:39,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 617 transitions. [2022-11-16 12:45:39,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.09090909090909) internal successors, (617), 11 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:39,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:39,566 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:39,566 INFO L175 Difference]: Start difference. First operand has 432 places, 403 transitions, 7099 flow. Second operand 11 states and 617 transitions. [2022-11-16 12:45:39,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 434 transitions, 8013 flow [2022-11-16 12:45:39,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 434 transitions, 7934 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-16 12:45:39,798 INFO L231 Difference]: Finished difference. Result has 437 places, 403 transitions, 7159 flow [2022-11-16 12:45:39,799 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6919, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7159, PETRI_PLACES=437, PETRI_TRANSITIONS=403} [2022-11-16 12:45:39,799 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 361 predicate places. [2022-11-16 12:45:39,800 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 403 transitions, 7159 flow [2022-11-16 12:45:39,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:39,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:39,800 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:39,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 12:45:39,801 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:39,801 INFO L85 PathProgramCache]: Analyzing trace with hash 392108323, now seen corresponding path program 33 times [2022-11-16 12:45:39,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:39,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463979750] [2022-11-16 12:45:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:39,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:40,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463979750] [2022-11-16 12:45:40,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463979750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:40,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:40,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:40,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79952552] [2022-11-16 12:45:40,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:40,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:40,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:40,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:40,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:40,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:40,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 403 transitions, 7159 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:40,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:40,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:40,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:41,565 INFO L130 PetriNetUnfolder]: 321/2243 cut-off events. [2022-11-16 12:45:41,565 INFO L131 PetriNetUnfolder]: For 22045/22129 co-relation queries the response was YES. [2022-11-16 12:45:41,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10082 conditions, 2243 events. 321/2243 cut-off events. For 22045/22129 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23446 event pairs, 61 based on Foata normal form. 21/2258 useless extension candidates. Maximal degree in co-relation 9872. Up to 399 conditions per place. [2022-11-16 12:45:41,597 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 338 selfloop transitions, 51 changer transitions 0/449 dead transitions. [2022-11-16 12:45:41,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 449 transitions, 8378 flow [2022-11-16 12:45:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 621 transitions. [2022-11-16 12:45:41,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7733499377334994 [2022-11-16 12:45:41,599 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 621 transitions. [2022-11-16 12:45:41,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 621 transitions. [2022-11-16 12:45:41,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:41,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 621 transitions. [2022-11-16 12:45:41,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:41,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:41,601 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:41,601 INFO L175 Difference]: Start difference. First operand has 437 places, 403 transitions, 7159 flow. Second operand 11 states and 621 transitions. [2022-11-16 12:45:41,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 449 transitions, 8378 flow [2022-11-16 12:45:41,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 449 transitions, 8244 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-16 12:45:41,823 INFO L231 Difference]: Finished difference. Result has 444 places, 409 transitions, 7330 flow [2022-11-16 12:45:41,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7033, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7330, PETRI_PLACES=444, PETRI_TRANSITIONS=409} [2022-11-16 12:45:41,823 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 368 predicate places. [2022-11-16 12:45:41,824 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 409 transitions, 7330 flow [2022-11-16 12:45:41,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:41,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:41,824 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:41,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 12:45:41,825 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash 109912489, now seen corresponding path program 34 times [2022-11-16 12:45:41,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806500056] [2022-11-16 12:45:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:41,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:42,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:42,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806500056] [2022-11-16 12:45:42,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806500056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:42,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:42,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:45:42,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572261632] [2022-11-16 12:45:42,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:42,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:45:42,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:45:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:45:42,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:42,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 409 transitions, 7330 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:42,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:42,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:42,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:43,476 INFO L130 PetriNetUnfolder]: 308/2169 cut-off events. [2022-11-16 12:45:43,476 INFO L131 PetriNetUnfolder]: For 21700/21781 co-relation queries the response was YES. [2022-11-16 12:45:43,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9791 conditions, 2169 events. 308/2169 cut-off events. For 21700/21781 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22532 event pairs, 61 based on Foata normal form. 22/2187 useless extension candidates. Maximal degree in co-relation 9577. Up to 399 conditions per place. [2022-11-16 12:45:43,500 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 340 selfloop transitions, 50 changer transitions 0/450 dead transitions. [2022-11-16 12:45:43,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 450 transitions, 8377 flow [2022-11-16 12:45:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 624 transitions. [2022-11-16 12:45:43,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7770859277708593 [2022-11-16 12:45:43,502 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 624 transitions. [2022-11-16 12:45:43,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 624 transitions. [2022-11-16 12:45:43,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:43,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 624 transitions. [2022-11-16 12:45:43,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.72727272727273) internal successors, (624), 11 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:43,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:43,505 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:43,505 INFO L175 Difference]: Start difference. First operand has 444 places, 409 transitions, 7330 flow. Second operand 11 states and 624 transitions. [2022-11-16 12:45:43,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 450 transitions, 8377 flow [2022-11-16 12:45:43,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 450 transitions, 8184 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-11-16 12:45:43,853 INFO L231 Difference]: Finished difference. Result has 451 places, 410 transitions, 7282 flow [2022-11-16 12:45:43,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7101, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7282, PETRI_PLACES=451, PETRI_TRANSITIONS=410} [2022-11-16 12:45:43,855 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 375 predicate places. [2022-11-16 12:45:43,855 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 410 transitions, 7282 flow [2022-11-16 12:45:43,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:43,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:43,855 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:43,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 12:45:43,856 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:43,856 INFO L85 PathProgramCache]: Analyzing trace with hash -729461189, now seen corresponding path program 35 times [2022-11-16 12:45:43,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:43,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741546420] [2022-11-16 12:45:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:44,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741546420] [2022-11-16 12:45:44,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741546420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:44,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:44,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810875655] [2022-11-16 12:45:44,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:44,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:44,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 410 transitions, 7282 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:44,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:44,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:44,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:45,720 INFO L130 PetriNetUnfolder]: 308/2177 cut-off events. [2022-11-16 12:45:45,720 INFO L131 PetriNetUnfolder]: For 20818/20901 co-relation queries the response was YES. [2022-11-16 12:45:45,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9799 conditions, 2177 events. 308/2177 cut-off events. For 20818/20901 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 22601 event pairs, 50 based on Foata normal form. 33/2206 useless extension candidates. Maximal degree in co-relation 9582. Up to 507 conditions per place. [2022-11-16 12:45:45,743 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 307 selfloop transitions, 75 changer transitions 0/442 dead transitions. [2022-11-16 12:45:45,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 442 transitions, 8380 flow [2022-11-16 12:45:45,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 611 transitions. [2022-11-16 12:45:45,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7608966376089664 [2022-11-16 12:45:45,746 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 611 transitions. [2022-11-16 12:45:45,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 611 transitions. [2022-11-16 12:45:45,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:45,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 611 transitions. [2022-11-16 12:45:45,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.54545454545455) internal successors, (611), 11 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:45,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:45,750 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:45,750 INFO L175 Difference]: Start difference. First operand has 451 places, 410 transitions, 7282 flow. Second operand 11 states and 611 transitions. [2022-11-16 12:45:45,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 442 transitions, 8380 flow [2022-11-16 12:45:46,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 442 transitions, 8285 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-11-16 12:45:46,033 INFO L231 Difference]: Finished difference. Result has 459 places, 417 transitions, 7593 flow [2022-11-16 12:45:46,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7593, PETRI_PLACES=459, PETRI_TRANSITIONS=417} [2022-11-16 12:45:46,034 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 383 predicate places. [2022-11-16 12:45:46,035 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 417 transitions, 7593 flow [2022-11-16 12:45:46,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:46,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:46,035 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:46,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 12:45:46,036 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1277722933, now seen corresponding path program 36 times [2022-11-16 12:45:46,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:46,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196087185] [2022-11-16 12:45:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:46,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:46,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:46,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196087185] [2022-11-16 12:45:46,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196087185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:46,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:46,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:45:46,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382563140] [2022-11-16 12:45:46,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:46,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:45:46,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:45:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:45:46,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:46,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 417 transitions, 7593 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:46,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:46,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:46,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:47,772 INFO L130 PetriNetUnfolder]: 322/2310 cut-off events. [2022-11-16 12:45:47,773 INFO L131 PetriNetUnfolder]: For 23859/23945 co-relation queries the response was YES. [2022-11-16 12:45:47,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10428 conditions, 2310 events. 322/2310 cut-off events. For 23859/23945 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24424 event pairs, 58 based on Foata normal form. 31/2334 useless extension candidates. Maximal degree in co-relation 10206. Up to 507 conditions per place. [2022-11-16 12:45:47,814 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 336 selfloop transitions, 64 changer transitions 0/460 dead transitions. [2022-11-16 12:45:47,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 460 transitions, 8888 flow [2022-11-16 12:45:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 619 transitions. [2022-11-16 12:45:47,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7708592777085927 [2022-11-16 12:45:47,816 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 619 transitions. [2022-11-16 12:45:47,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 619 transitions. [2022-11-16 12:45:47,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:47,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 619 transitions. [2022-11-16 12:45:47,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.27272727272727) internal successors, (619), 11 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:47,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:47,819 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:47,819 INFO L175 Difference]: Start difference. First operand has 459 places, 417 transitions, 7593 flow. Second operand 11 states and 619 transitions. [2022-11-16 12:45:47,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 460 transitions, 8888 flow [2022-11-16 12:45:48,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 460 transitions, 8670 flow, removed 78 selfloop flow, removed 7 redundant places. [2022-11-16 12:45:48,111 INFO L231 Difference]: Finished difference. Result has 466 places, 425 transitions, 7806 flow [2022-11-16 12:45:48,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7806, PETRI_PLACES=466, PETRI_TRANSITIONS=425} [2022-11-16 12:45:48,112 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 390 predicate places. [2022-11-16 12:45:48,112 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 425 transitions, 7806 flow [2022-11-16 12:45:48,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:48,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:48,112 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:48,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 12:45:48,113 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:48,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:48,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1456068015, now seen corresponding path program 37 times [2022-11-16 12:45:48,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:48,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199459958] [2022-11-16 12:45:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:48,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:48,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:48,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199459958] [2022-11-16 12:45:48,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199459958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:48,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:48,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:45:48,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030674998] [2022-11-16 12:45:48,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:48,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:45:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:48,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:45:48,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:45:48,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-16 12:45:48,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 425 transitions, 7806 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:48,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:48,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-16 12:45:48,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:49,686 INFO L130 PetriNetUnfolder]: 309/2246 cut-off events. [2022-11-16 12:45:49,686 INFO L131 PetriNetUnfolder]: For 22518/22607 co-relation queries the response was YES. [2022-11-16 12:45:49,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 2246 events. 309/2246 cut-off events. For 22518/22607 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23641 event pairs, 53 based on Foata normal form. 38/2279 useless extension candidates. Maximal degree in co-relation 9880. Up to 507 conditions per place. [2022-11-16 12:45:49,712 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 318 selfloop transitions, 73 changer transitions 0/451 dead transitions. [2022-11-16 12:45:49,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 451 transitions, 8753 flow [2022-11-16 12:45:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:45:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:45:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 614 transitions. [2022-11-16 12:45:49,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7646326276463262 [2022-11-16 12:45:49,713 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 614 transitions. [2022-11-16 12:45:49,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 614 transitions. [2022-11-16 12:45:49,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:49,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 614 transitions. [2022-11-16 12:45:49,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:49,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:49,716 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:49,716 INFO L175 Difference]: Start difference. First operand has 466 places, 425 transitions, 7806 flow. Second operand 11 states and 614 transitions. [2022-11-16 12:45:49,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 451 transitions, 8753 flow [2022-11-16 12:45:49,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 451 transitions, 8615 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-11-16 12:45:50,004 INFO L231 Difference]: Finished difference. Result has 471 places, 427 transitions, 7881 flow [2022-11-16 12:45:50,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7604, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7881, PETRI_PLACES=471, PETRI_TRANSITIONS=427} [2022-11-16 12:45:50,005 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 395 predicate places. [2022-11-16 12:45:50,005 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 427 transitions, 7881 flow [2022-11-16 12:45:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:50,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:50,006 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-16 12:45:50,006 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:50,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash -460313033, now seen corresponding path program 38 times [2022-11-16 12:45:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:50,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935773057] [2022-11-16 12:45:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:50,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:50,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935773057] [2022-11-16 12:45:50,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935773057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:50,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:50,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:45:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730375855] [2022-11-16 12:45:50,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:50,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:45:50,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:45:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:45:50,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 73 [2022-11-16 12:45:50,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 427 transitions, 7881 flow. Second operand has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 13 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:50,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:50,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 73 [2022-11-16 12:45:50,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:51,585 INFO L130 PetriNetUnfolder]: 299/2167 cut-off events. [2022-11-16 12:45:51,585 INFO L131 PetriNetUnfolder]: For 21248/21330 co-relation queries the response was YES. [2022-11-16 12:45:51,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 2167 events. 299/2167 cut-off events. For 21248/21330 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 22585 event pairs, 50 based on Foata normal form. 27/2192 useless extension candidates. Maximal degree in co-relation 9624. Up to 507 conditions per place. [2022-11-16 12:45:51,608 INFO L137 encePairwiseOnDemand]: 59/73 looper letters, 326 selfloop transitions, 66 changer transitions 0/449 dead transitions. [2022-11-16 12:45:51,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 449 transitions, 8740 flow [2022-11-16 12:45:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:45:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:45:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 672 transitions. [2022-11-16 12:45:51,610 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.708113804004215 [2022-11-16 12:45:51,610 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 672 transitions. [2022-11-16 12:45:51,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 672 transitions. [2022-11-16 12:45:51,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:51,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 672 transitions. [2022-11-16 12:45:51,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 51.69230769230769) internal successors, (672), 13 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:51,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:51,612 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:51,612 INFO L175 Difference]: Start difference. First operand has 471 places, 427 transitions, 7881 flow. Second operand 13 states and 672 transitions. [2022-11-16 12:45:51,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 449 transitions, 8740 flow [2022-11-16 12:45:51,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 449 transitions, 8565 flow, removed 30 selfloop flow, removed 7 redundant places. [2022-11-16 12:45:51,837 INFO L231 Difference]: Finished difference. Result has 477 places, 425 transitions, 7775 flow [2022-11-16 12:45:51,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7638, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7775, PETRI_PLACES=477, PETRI_TRANSITIONS=425} [2022-11-16 12:45:51,838 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 401 predicate places. [2022-11-16 12:45:51,838 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 425 transitions, 7775 flow [2022-11-16 12:45:51,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 13 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:51,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:51,839 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:51,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 12:45:51,839 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:51,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1085029204, now seen corresponding path program 1 times [2022-11-16 12:45:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:51,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596838938] [2022-11-16 12:45:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:51,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:52,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:52,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596838938] [2022-11-16 12:45:52,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596838938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:52,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:52,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:45:52,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555007885] [2022-11-16 12:45:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:52,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:45:52,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:45:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:45:52,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:45:52,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 425 transitions, 7775 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:52,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:52,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:45:52,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:56,343 INFO L130 PetriNetUnfolder]: 726/2965 cut-off events. [2022-11-16 12:45:56,343 INFO L131 PetriNetUnfolder]: For 36964/36968 co-relation queries the response was YES. [2022-11-16 12:45:56,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15652 conditions, 2965 events. 726/2965 cut-off events. For 36964/36968 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28574 event pairs, 117 based on Foata normal form. 3/2948 useless extension candidates. Maximal degree in co-relation 15418. Up to 814 conditions per place. [2022-11-16 12:45:56,389 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 523 selfloop transitions, 72 changer transitions 0/620 dead transitions. [2022-11-16 12:45:56,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 620 transitions, 11882 flow [2022-11-16 12:45:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:45:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 12:45:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 895 transitions. [2022-11-16 12:45:56,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.437866927592955 [2022-11-16 12:45:56,393 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 895 transitions. [2022-11-16 12:45:56,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 895 transitions. [2022-11-16 12:45:56,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:56,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 895 transitions. [2022-11-16 12:45:56,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 31.964285714285715) internal successors, (895), 28 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:56,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 73.0) internal successors, (2117), 29 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:56,398 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 73.0) internal successors, (2117), 29 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:56,398 INFO L175 Difference]: Start difference. First operand has 477 places, 425 transitions, 7775 flow. Second operand 28 states and 895 transitions. [2022-11-16 12:45:56,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 620 transitions, 11882 flow [2022-11-16 12:45:56,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 620 transitions, 11753 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-16 12:45:56,706 INFO L231 Difference]: Finished difference. Result has 506 places, 453 transitions, 8168 flow [2022-11-16 12:45:56,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7662, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8168, PETRI_PLACES=506, PETRI_TRANSITIONS=453} [2022-11-16 12:45:56,707 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 430 predicate places. [2022-11-16 12:45:56,708 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 453 transitions, 8168 flow [2022-11-16 12:45:56,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:56,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:56,708 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:56,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-16 12:45:56,709 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:45:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 632861442, now seen corresponding path program 2 times [2022-11-16 12:45:56,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:56,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658734368] [2022-11-16 12:45:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:56,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:57,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:57,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658734368] [2022-11-16 12:45:57,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658734368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:57,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:45:57,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:45:57,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539490062] [2022-11-16 12:45:57,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:57,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:45:57,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:57,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:45:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:45:57,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:45:57,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 453 transitions, 8168 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:57,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:57,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:45:57,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:01,463 INFO L130 PetriNetUnfolder]: 725/3008 cut-off events. [2022-11-16 12:46:01,463 INFO L131 PetriNetUnfolder]: For 38873/38877 co-relation queries the response was YES. [2022-11-16 12:46:01,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 3008 events. 725/3008 cut-off events. For 38873/38877 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 29464 event pairs, 185 based on Foata normal form. 3/2991 useless extension candidates. Maximal degree in co-relation 16518. Up to 1139 conditions per place. [2022-11-16 12:46:01,520 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 487 selfloop transitions, 79 changer transitions 0/591 dead transitions. [2022-11-16 12:46:01,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 591 transitions, 11233 flow [2022-11-16 12:46:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:46:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-16 12:46:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 862 transitions. [2022-11-16 12:46:01,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43734145104008115 [2022-11-16 12:46:01,522 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 862 transitions. [2022-11-16 12:46:01,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 862 transitions. [2022-11-16 12:46:01,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:01,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 862 transitions. [2022-11-16 12:46:01,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 31.925925925925927) internal successors, (862), 27 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:01,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 73.0) internal successors, (2044), 28 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:01,527 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 73.0) internal successors, (2044), 28 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:01,527 INFO L175 Difference]: Start difference. First operand has 506 places, 453 transitions, 8168 flow. Second operand 27 states and 862 transitions. [2022-11-16 12:46:01,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 591 transitions, 11233 flow [2022-11-16 12:46:02,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 591 transitions, 11193 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-16 12:46:02,053 INFO L231 Difference]: Finished difference. Result has 534 places, 468 transitions, 8491 flow [2022-11-16 12:46:02,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8130, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8491, PETRI_PLACES=534, PETRI_TRANSITIONS=468} [2022-11-16 12:46:02,054 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 458 predicate places. [2022-11-16 12:46:02,054 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 468 transitions, 8491 flow [2022-11-16 12:46:02,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:02,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:02,055 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-16 12:46:02,055 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1413720348, now seen corresponding path program 3 times [2022-11-16 12:46:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:02,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911307635] [2022-11-16 12:46:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:02,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:02,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911307635] [2022-11-16 12:46:02,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911307635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:02,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:02,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:02,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077873130] [2022-11-16 12:46:02,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:02,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:02,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:02,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:02,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:02,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:02,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 468 transitions, 8491 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:02,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:02,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:02,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:07,751 INFO L130 PetriNetUnfolder]: 725/3005 cut-off events. [2022-11-16 12:46:07,751 INFO L131 PetriNetUnfolder]: For 41929/41933 co-relation queries the response was YES. [2022-11-16 12:46:07,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17496 conditions, 3005 events. 725/3005 cut-off events. For 41929/41933 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 29185 event pairs, 125 based on Foata normal form. 3/2988 useless extension candidates. Maximal degree in co-relation 17234. Up to 832 conditions per place. [2022-11-16 12:46:07,793 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 525 selfloop transitions, 100 changer transitions 0/650 dead transitions. [2022-11-16 12:46:07,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 650 transitions, 12562 flow [2022-11-16 12:46:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:46:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 12:46:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1066 transitions. [2022-11-16 12:46:07,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42949234488315874 [2022-11-16 12:46:07,797 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1066 transitions. [2022-11-16 12:46:07,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1066 transitions. [2022-11-16 12:46:07,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:07,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1066 transitions. [2022-11-16 12:46:07,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.352941176470587) internal successors, (1066), 34 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:07,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:07,803 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:07,804 INFO L175 Difference]: Start difference. First operand has 534 places, 468 transitions, 8491 flow. Second operand 34 states and 1066 transitions. [2022-11-16 12:46:07,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 650 transitions, 12562 flow [2022-11-16 12:46:08,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 650 transitions, 12478 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-11-16 12:46:08,326 INFO L231 Difference]: Finished difference. Result has 563 places, 488 transitions, 9006 flow [2022-11-16 12:46:08,326 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8411, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9006, PETRI_PLACES=563, PETRI_TRANSITIONS=488} [2022-11-16 12:46:08,327 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 487 predicate places. [2022-11-16 12:46:08,327 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 488 transitions, 9006 flow [2022-11-16 12:46:08,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:08,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:08,328 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:08,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-16 12:46:08,328 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1466061754, now seen corresponding path program 4 times [2022-11-16 12:46:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:08,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077193337] [2022-11-16 12:46:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:09,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077193337] [2022-11-16 12:46:09,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077193337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:09,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:09,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:09,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855565326] [2022-11-16 12:46:09,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:09,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:09,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:09,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 488 transitions, 9006 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:09,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:09,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:09,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:13,978 INFO L130 PetriNetUnfolder]: 725/3042 cut-off events. [2022-11-16 12:46:13,978 INFO L131 PetriNetUnfolder]: For 46058/46062 co-relation queries the response was YES. [2022-11-16 12:46:14,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 3042 events. 725/3042 cut-off events. For 46058/46062 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 29985 event pairs, 185 based on Foata normal form. 3/3025 useless extension candidates. Maximal degree in co-relation 18133. Up to 1123 conditions per place. [2022-11-16 12:46:14,026 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 488 selfloop transitions, 103 changer transitions 0/616 dead transitions. [2022-11-16 12:46:14,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 616 transitions, 12105 flow [2022-11-16 12:46:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:46:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:46:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1004 transitions. [2022-11-16 12:46:14,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2022-11-16 12:46:14,029 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1004 transitions. [2022-11-16 12:46:14,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1004 transitions. [2022-11-16 12:46:14,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:14,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1004 transitions. [2022-11-16 12:46:14,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 31.375) internal successors, (1004), 32 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:14,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:14,036 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:14,036 INFO L175 Difference]: Start difference. First operand has 563 places, 488 transitions, 9006 flow. Second operand 32 states and 1004 transitions. [2022-11-16 12:46:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 616 transitions, 12105 flow [2022-11-16 12:46:14,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 616 transitions, 11952 flow, removed 30 selfloop flow, removed 17 redundant places. [2022-11-16 12:46:14,522 INFO L231 Difference]: Finished difference. Result has 582 places, 493 transitions, 9202 flow [2022-11-16 12:46:14,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9202, PETRI_PLACES=582, PETRI_TRANSITIONS=493} [2022-11-16 12:46:14,523 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 506 predicate places. [2022-11-16 12:46:14,524 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 493 transitions, 9202 flow [2022-11-16 12:46:14,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:14,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:14,524 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:14,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-16 12:46:14,525 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -994901186, now seen corresponding path program 5 times [2022-11-16 12:46:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:14,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480736897] [2022-11-16 12:46:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:15,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:15,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480736897] [2022-11-16 12:46:15,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480736897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:15,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:15,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:15,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719884104] [2022-11-16 12:46:15,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:15,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:15,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:15,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:15,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:15,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 493 transitions, 9202 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:15,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:15,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:15,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:19,752 INFO L130 PetriNetUnfolder]: 729/3048 cut-off events. [2022-11-16 12:46:19,752 INFO L131 PetriNetUnfolder]: For 48163/48167 co-relation queries the response was YES. [2022-11-16 12:46:19,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18705 conditions, 3048 events. 729/3048 cut-off events. For 48163/48167 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29812 event pairs, 121 based on Foata normal form. 3/3031 useless extension candidates. Maximal degree in co-relation 18462. Up to 824 conditions per place. [2022-11-16 12:46:19,787 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 548 selfloop transitions, 105 changer transitions 0/678 dead transitions. [2022-11-16 12:46:19,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 678 transitions, 13515 flow [2022-11-16 12:46:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:46:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 12:46:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 978 transitions. [2022-11-16 12:46:19,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4321696862571807 [2022-11-16 12:46:19,789 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 978 transitions. [2022-11-16 12:46:19,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 978 transitions. [2022-11-16 12:46:19,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:19,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 978 transitions. [2022-11-16 12:46:19,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 31.548387096774192) internal successors, (978), 31 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:19,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:19,795 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:19,795 INFO L175 Difference]: Start difference. First operand has 582 places, 493 transitions, 9202 flow. Second operand 31 states and 978 transitions. [2022-11-16 12:46:19,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 678 transitions, 13515 flow [2022-11-16 12:46:20,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 678 transitions, 13334 flow, removed 18 selfloop flow, removed 26 redundant places. [2022-11-16 12:46:20,225 INFO L231 Difference]: Finished difference. Result has 596 places, 511 transitions, 9658 flow [2022-11-16 12:46:20,226 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=9658, PETRI_PLACES=596, PETRI_TRANSITIONS=511} [2022-11-16 12:46:20,227 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 520 predicate places. [2022-11-16 12:46:20,227 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 511 transitions, 9658 flow [2022-11-16 12:46:20,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:20,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:20,227 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:20,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-16 12:46:20,228 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash 246125894, now seen corresponding path program 6 times [2022-11-16 12:46:20,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:20,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880257088] [2022-11-16 12:46:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:20,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:21,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:21,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880257088] [2022-11-16 12:46:21,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880257088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:21,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:21,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:21,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348262269] [2022-11-16 12:46:21,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:21,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:21,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:21,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:21,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:21,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:21,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 511 transitions, 9658 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:21,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:21,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:21,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:25,560 INFO L130 PetriNetUnfolder]: 728/3060 cut-off events. [2022-11-16 12:46:25,560 INFO L131 PetriNetUnfolder]: For 51186/51190 co-relation queries the response was YES. [2022-11-16 12:46:25,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 3060 events. 728/3060 cut-off events. For 51186/51190 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 29983 event pairs, 121 based on Foata normal form. 3/3043 useless extension candidates. Maximal degree in co-relation 19145. Up to 854 conditions per place. [2022-11-16 12:46:25,600 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 557 selfloop transitions, 102 changer transitions 0/684 dead transitions. [2022-11-16 12:46:25,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 684 transitions, 13714 flow [2022-11-16 12:46:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:46:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:46:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1008 transitions. [2022-11-16 12:46:25,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2022-11-16 12:46:25,603 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1008 transitions. [2022-11-16 12:46:25,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1008 transitions. [2022-11-16 12:46:25,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:25,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1008 transitions. [2022-11-16 12:46:25,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 31.5) internal successors, (1008), 32 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:25,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:25,606 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:25,606 INFO L175 Difference]: Start difference. First operand has 596 places, 511 transitions, 9658 flow. Second operand 32 states and 1008 transitions. [2022-11-16 12:46:25,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 684 transitions, 13714 flow [2022-11-16 12:46:26,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 684 transitions, 13580 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-11-16 12:46:26,081 INFO L231 Difference]: Finished difference. Result has 620 places, 521 transitions, 9973 flow [2022-11-16 12:46:26,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9528, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9973, PETRI_PLACES=620, PETRI_TRANSITIONS=521} [2022-11-16 12:46:26,082 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 544 predicate places. [2022-11-16 12:46:26,082 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 521 transitions, 9973 flow [2022-11-16 12:46:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:26,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:26,083 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:26,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-16 12:46:26,083 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1609922464, now seen corresponding path program 7 times [2022-11-16 12:46:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:26,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193238236] [2022-11-16 12:46:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:26,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:26,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193238236] [2022-11-16 12:46:26,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193238236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:26,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:26,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709020785] [2022-11-16 12:46:26,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:26,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:26,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:26,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:26,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 521 transitions, 9973 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:26,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:26,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:26,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:32,394 INFO L130 PetriNetUnfolder]: 730/3097 cut-off events. [2022-11-16 12:46:32,395 INFO L131 PetriNetUnfolder]: For 54356/54360 co-relation queries the response was YES. [2022-11-16 12:46:32,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19903 conditions, 3097 events. 730/3097 cut-off events. For 54356/54360 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 30711 event pairs, 177 based on Foata normal form. 3/3080 useless extension candidates. Maximal degree in co-relation 19637. Up to 1079 conditions per place. [2022-11-16 12:46:32,448 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 489 selfloop transitions, 147 changer transitions 0/661 dead transitions. [2022-11-16 12:46:32,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 661 transitions, 13410 flow [2022-11-16 12:46:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 12:46:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 12:46:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1170 transitions. [2022-11-16 12:46:32,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42177361211247294 [2022-11-16 12:46:32,451 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1170 transitions. [2022-11-16 12:46:32,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1170 transitions. [2022-11-16 12:46:32,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:32,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1170 transitions. [2022-11-16 12:46:32,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.789473684210527) internal successors, (1170), 38 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:32,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:32,457 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:32,458 INFO L175 Difference]: Start difference. First operand has 620 places, 521 transitions, 9973 flow. Second operand 38 states and 1170 transitions. [2022-11-16 12:46:32,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 661 transitions, 13410 flow [2022-11-16 12:46:32,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 661 transitions, 13150 flow, removed 27 selfloop flow, removed 24 redundant places. [2022-11-16 12:46:33,003 INFO L231 Difference]: Finished difference. Result has 640 places, 532 transitions, 10313 flow [2022-11-16 12:46:33,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9723, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10313, PETRI_PLACES=640, PETRI_TRANSITIONS=532} [2022-11-16 12:46:33,004 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 564 predicate places. [2022-11-16 12:46:33,004 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 532 transitions, 10313 flow [2022-11-16 12:46:33,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:33,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:33,005 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:33,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-16 12:46:33,005 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:33,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2046666050, now seen corresponding path program 8 times [2022-11-16 12:46:33,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:33,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290771870] [2022-11-16 12:46:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:33,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:33,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290771870] [2022-11-16 12:46:33,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290771870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:33,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:33,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533318598] [2022-11-16 12:46:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:33,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:33,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:33,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 532 transitions, 10313 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:33,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:33,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:33,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:41,592 INFO L130 PetriNetUnfolder]: 730/3088 cut-off events. [2022-11-16 12:46:41,592 INFO L131 PetriNetUnfolder]: For 55188/55192 co-relation queries the response was YES. [2022-11-16 12:46:41,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20077 conditions, 3088 events. 730/3088 cut-off events. For 55188/55192 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 30583 event pairs, 72 based on Foata normal form. 8/3076 useless extension candidates. Maximal degree in co-relation 19805. Up to 877 conditions per place. [2022-11-16 12:46:41,636 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 501 selfloop transitions, 245 changer transitions 0/771 dead transitions. [2022-11-16 12:46:41,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 771 transitions, 15673 flow [2022-11-16 12:46:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-16 12:46:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-16 12:46:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1672 transitions. [2022-11-16 12:46:41,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41643835616438357 [2022-11-16 12:46:41,639 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 1672 transitions. [2022-11-16 12:46:41,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 1672 transitions. [2022-11-16 12:46:41,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:41,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 1672 transitions. [2022-11-16 12:46:41,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 30.4) internal successors, (1672), 55 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:41,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 73.0) internal successors, (4088), 56 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:41,646 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 73.0) internal successors, (4088), 56 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:41,646 INFO L175 Difference]: Start difference. First operand has 640 places, 532 transitions, 10313 flow. Second operand 55 states and 1672 transitions. [2022-11-16 12:46:41,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 771 transitions, 15673 flow [2022-11-16 12:46:42,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 771 transitions, 15203 flow, removed 53 selfloop flow, removed 38 redundant places. [2022-11-16 12:46:42,154 INFO L231 Difference]: Finished difference. Result has 660 places, 571 transitions, 11143 flow [2022-11-16 12:46:42,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9940, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=11143, PETRI_PLACES=660, PETRI_TRANSITIONS=571} [2022-11-16 12:46:42,155 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 584 predicate places. [2022-11-16 12:46:42,155 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 571 transitions, 11143 flow [2022-11-16 12:46:42,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:42,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:42,156 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:42,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-16 12:46:42,156 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1809555833, now seen corresponding path program 1 times [2022-11-16 12:46:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:42,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721651946] [2022-11-16 12:46:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:42,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:43,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:43,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721651946] [2022-11-16 12:46:43,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721651946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:43,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:43,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:43,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764945534] [2022-11-16 12:46:43,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:43,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:43,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:43,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:43,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:43,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:43,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 571 transitions, 11143 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:43,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:43,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:43,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:47,932 INFO L130 PetriNetUnfolder]: 728/3085 cut-off events. [2022-11-16 12:46:47,932 INFO L131 PetriNetUnfolder]: For 56244/56248 co-relation queries the response was YES. [2022-11-16 12:46:47,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20347 conditions, 3085 events. 728/3085 cut-off events. For 56244/56248 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 30577 event pairs, 187 based on Foata normal form. 5/3070 useless extension candidates. Maximal degree in co-relation 20078. Up to 1085 conditions per place. [2022-11-16 12:46:47,985 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 526 selfloop transitions, 149 changer transitions 0/700 dead transitions. [2022-11-16 12:46:47,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 700 transitions, 14394 flow [2022-11-16 12:46:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:46:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:46:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1094 transitions. [2022-11-16 12:46:47,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42818003913894326 [2022-11-16 12:46:47,988 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1094 transitions. [2022-11-16 12:46:47,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1094 transitions. [2022-11-16 12:46:47,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:47,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1094 transitions. [2022-11-16 12:46:47,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 31.257142857142856) internal successors, (1094), 35 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:47,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:47,991 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:47,991 INFO L175 Difference]: Start difference. First operand has 660 places, 571 transitions, 11143 flow. Second operand 35 states and 1094 transitions. [2022-11-16 12:46:47,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 700 transitions, 14394 flow [2022-11-16 12:46:48,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 700 transitions, 12860 flow, removed 68 selfloop flow, removed 49 redundant places. [2022-11-16 12:46:48,491 INFO L231 Difference]: Finished difference. Result has 653 places, 583 transitions, 10189 flow [2022-11-16 12:46:48,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9692, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10189, PETRI_PLACES=653, PETRI_TRANSITIONS=583} [2022-11-16 12:46:48,492 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 577 predicate places. [2022-11-16 12:46:48,492 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 583 transitions, 10189 flow [2022-11-16 12:46:48,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:48,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:48,492 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:48,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-16 12:46:48,492 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:48,493 INFO L85 PathProgramCache]: Analyzing trace with hash 453672061, now seen corresponding path program 2 times [2022-11-16 12:46:48,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:48,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492602840] [2022-11-16 12:46:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:48,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:49,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:49,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492602840] [2022-11-16 12:46:49,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492602840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:49,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:49,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:49,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042294911] [2022-11-16 12:46:49,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:49,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:49,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:49,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:49,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 583 transitions, 10189 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:49,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:49,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:49,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:46:55,235 INFO L130 PetriNetUnfolder]: 737/3139 cut-off events. [2022-11-16 12:46:55,235 INFO L131 PetriNetUnfolder]: For 49534/49536 co-relation queries the response was YES. [2022-11-16 12:46:55,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20089 conditions, 3139 events. 737/3139 cut-off events. For 49534/49536 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 31164 event pairs, 189 based on Foata normal form. 5/3123 useless extension candidates. Maximal degree in co-relation 19842. Up to 1102 conditions per place. [2022-11-16 12:46:55,271 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 545 selfloop transitions, 176 changer transitions 0/746 dead transitions. [2022-11-16 12:46:55,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 746 transitions, 13914 flow [2022-11-16 12:46:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:46:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 12:46:55,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1249 transitions. [2022-11-16 12:46:55,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42773972602739724 [2022-11-16 12:46:55,274 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1249 transitions. [2022-11-16 12:46:55,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1249 transitions. [2022-11-16 12:46:55,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:46:55,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1249 transitions. [2022-11-16 12:46:55,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 31.225) internal successors, (1249), 40 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:55,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:55,281 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:55,281 INFO L175 Difference]: Start difference. First operand has 653 places, 583 transitions, 10189 flow. Second operand 40 states and 1249 transitions. [2022-11-16 12:46:55,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 746 transitions, 13914 flow [2022-11-16 12:46:55,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 746 transitions, 13594 flow, removed 7 selfloop flow, removed 26 redundant places. [2022-11-16 12:46:55,806 INFO L231 Difference]: Finished difference. Result has 678 places, 614 transitions, 10809 flow [2022-11-16 12:46:55,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9907, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=10809, PETRI_PLACES=678, PETRI_TRANSITIONS=614} [2022-11-16 12:46:55,806 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 602 predicate places. [2022-11-16 12:46:55,807 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 614 transitions, 10809 flow [2022-11-16 12:46:55,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:55,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:46:55,807 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:55,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-16 12:46:55,808 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:46:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:55,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1774231985, now seen corresponding path program 3 times [2022-11-16 12:46:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:55,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633018771] [2022-11-16 12:46:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:55,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:56,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633018771] [2022-11-16 12:46:56,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633018771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:56,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:56,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:46:56,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749130973] [2022-11-16 12:46:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:56,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:46:56,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:56,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:46:56,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:46:56,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:46:56,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 614 transitions, 10809 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:56,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:46:56,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:46:56,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:02,312 INFO L130 PetriNetUnfolder]: 735/3142 cut-off events. [2022-11-16 12:47:02,312 INFO L131 PetriNetUnfolder]: For 54207/54209 co-relation queries the response was YES. [2022-11-16 12:47:02,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20874 conditions, 3142 events. 735/3142 cut-off events. For 54207/54209 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 31213 event pairs, 188 based on Foata normal form. 5/3126 useless extension candidates. Maximal degree in co-relation 20615. Up to 1099 conditions per place. [2022-11-16 12:47:02,357 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 560 selfloop transitions, 172 changer transitions 0/757 dead transitions. [2022-11-16 12:47:02,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 757 transitions, 14246 flow [2022-11-16 12:47:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:47:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 12:47:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1227 transitions. [2022-11-16 12:47:02,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4309799789251844 [2022-11-16 12:47:02,359 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1227 transitions. [2022-11-16 12:47:02,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1227 transitions. [2022-11-16 12:47:02,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:02,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1227 transitions. [2022-11-16 12:47:02,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 31.46153846153846) internal successors, (1227), 39 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:02,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:02,363 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:02,363 INFO L175 Difference]: Start difference. First operand has 678 places, 614 transitions, 10809 flow. Second operand 39 states and 1227 transitions. [2022-11-16 12:47:02,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 757 transitions, 14246 flow [2022-11-16 12:47:02,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 757 transitions, 14089 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-11-16 12:47:02,869 INFO L231 Difference]: Finished difference. Result has 717 places, 630 transitions, 11347 flow [2022-11-16 12:47:02,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10653, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11347, PETRI_PLACES=717, PETRI_TRANSITIONS=630} [2022-11-16 12:47:02,871 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 641 predicate places. [2022-11-16 12:47:02,871 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 630 transitions, 11347 flow [2022-11-16 12:47:02,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:02,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:02,871 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:02,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-16 12:47:02,872 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:47:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash -733061095, now seen corresponding path program 4 times [2022-11-16 12:47:02,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:02,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031766228] [2022-11-16 12:47:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:02,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:03,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:03,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031766228] [2022-11-16 12:47:03,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031766228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:03,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:03,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:47:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816517277] [2022-11-16 12:47:03,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:03,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:47:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:47:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:47:03,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:47:03,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 630 transitions, 11347 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:03,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:03,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:47:03,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:11,847 INFO L130 PetriNetUnfolder]: 744/3146 cut-off events. [2022-11-16 12:47:11,847 INFO L131 PetriNetUnfolder]: For 61765/61767 co-relation queries the response was YES. [2022-11-16 12:47:11,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22047 conditions, 3146 events. 744/3146 cut-off events. For 61765/61767 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 31014 event pairs, 125 based on Foata normal form. 5/3129 useless extension candidates. Maximal degree in co-relation 21777. Up to 823 conditions per place. [2022-11-16 12:47:11,882 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 574 selfloop transitions, 234 changer transitions 0/833 dead transitions. [2022-11-16 12:47:11,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 833 transitions, 15938 flow [2022-11-16 12:47:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-16 12:47:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-16 12:47:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1917 transitions. [2022-11-16 12:47:11,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4103167808219178 [2022-11-16 12:47:11,886 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 1917 transitions. [2022-11-16 12:47:11,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 1917 transitions. [2022-11-16 12:47:11,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:11,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 1917 transitions. [2022-11-16 12:47:11,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 29.953125) internal successors, (1917), 64 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:11,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:11,893 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:11,893 INFO L175 Difference]: Start difference. First operand has 717 places, 630 transitions, 11347 flow. Second operand 64 states and 1917 transitions. [2022-11-16 12:47:11,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 833 transitions, 15938 flow [2022-11-16 12:47:12,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 757 places, 833 transitions, 15634 flow, removed 31 selfloop flow, removed 23 redundant places. [2022-11-16 12:47:12,435 INFO L231 Difference]: Finished difference. Result has 772 places, 667 transitions, 12190 flow [2022-11-16 12:47:12,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11053, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=12190, PETRI_PLACES=772, PETRI_TRANSITIONS=667} [2022-11-16 12:47:12,436 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 696 predicate places. [2022-11-16 12:47:12,436 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 667 transitions, 12190 flow [2022-11-16 12:47:12,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:12,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:12,436 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:12,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-16 12:47:12,437 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:47:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1273542449, now seen corresponding path program 5 times [2022-11-16 12:47:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:12,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189018245] [2022-11-16 12:47:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:13,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:13,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189018245] [2022-11-16 12:47:13,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189018245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:13,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:13,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:47:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842116242] [2022-11-16 12:47:13,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:13,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:47:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:47:13,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:47:13,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:47:13,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 772 places, 667 transitions, 12190 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:13,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:13,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:47:13,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:21,398 INFO L130 PetriNetUnfolder]: 742/3174 cut-off events. [2022-11-16 12:47:21,398 INFO L131 PetriNetUnfolder]: For 71633/71635 co-relation queries the response was YES. [2022-11-16 12:47:21,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23321 conditions, 3174 events. 742/3174 cut-off events. For 71633/71635 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 31679 event pairs, 181 based on Foata normal form. 5/3157 useless extension candidates. Maximal degree in co-relation 23036. Up to 1035 conditions per place. [2022-11-16 12:47:21,450 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 545 selfloop transitions, 237 changer transitions 0/807 dead transitions. [2022-11-16 12:47:21,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 807 transitions, 15857 flow [2022-11-16 12:47:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:47:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:47:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1691 transitions. [2022-11-16 12:47:21,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41364970645792565 [2022-11-16 12:47:21,453 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1691 transitions. [2022-11-16 12:47:21,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1691 transitions. [2022-11-16 12:47:21,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:21,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1691 transitions. [2022-11-16 12:47:21,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.196428571428573) internal successors, (1691), 56 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:21,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:21,461 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:21,462 INFO L175 Difference]: Start difference. First operand has 772 places, 667 transitions, 12190 flow. Second operand 56 states and 1691 transitions. [2022-11-16 12:47:21,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 807 transitions, 15857 flow [2022-11-16 12:47:22,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 807 transitions, 15457 flow, removed 62 selfloop flow, removed 35 redundant places. [2022-11-16 12:47:22,152 INFO L231 Difference]: Finished difference. Result has 800 places, 682 transitions, 12736 flow [2022-11-16 12:47:22,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11792, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=12736, PETRI_PLACES=800, PETRI_TRANSITIONS=682} [2022-11-16 12:47:22,153 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 724 predicate places. [2022-11-16 12:47:22,153 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 682 transitions, 12736 flow [2022-11-16 12:47:22,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:22,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:22,154 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-16 12:47:22,154 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:47:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1872077933, now seen corresponding path program 6 times [2022-11-16 12:47:22,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:22,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647195747] [2022-11-16 12:47:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:22,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:22,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647195747] [2022-11-16 12:47:22,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647195747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:22,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:22,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:47:22,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671194344] [2022-11-16 12:47:22,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:22,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:47:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:47:22,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:47:22,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:47:22,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 682 transitions, 12736 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:22,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:22,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:47:22,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:27,732 INFO L130 PetriNetUnfolder]: 751/3206 cut-off events. [2022-11-16 12:47:27,732 INFO L131 PetriNetUnfolder]: For 78958/78960 co-relation queries the response was YES. [2022-11-16 12:47:27,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24257 conditions, 3206 events. 751/3206 cut-off events. For 78958/78960 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 31910 event pairs, 106 based on Foata normal form. 5/3188 useless extension candidates. Maximal degree in co-relation 23968. Up to 927 conditions per place. [2022-11-16 12:47:27,788 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 654 selfloop transitions, 197 changer transitions 0/876 dead transitions. [2022-11-16 12:47:27,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 876 transitions, 17652 flow [2022-11-16 12:47:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 12:47:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 12:47:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1119 transitions. [2022-11-16 12:47:27,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2022-11-16 12:47:27,791 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1119 transitions. [2022-11-16 12:47:27,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1119 transitions. [2022-11-16 12:47:27,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:27,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1119 transitions. [2022-11-16 12:47:27,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 31.083333333333332) internal successors, (1119), 36 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:27,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:27,794 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:27,794 INFO L175 Difference]: Start difference. First operand has 800 places, 682 transitions, 12736 flow. Second operand 36 states and 1119 transitions. [2022-11-16 12:47:27,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 876 transitions, 17652 flow [2022-11-16 12:47:28,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 876 transitions, 17190 flow, removed 57 selfloop flow, removed 46 redundant places. [2022-11-16 12:47:28,527 INFO L231 Difference]: Finished difference. Result has 808 places, 719 transitions, 13678 flow [2022-11-16 12:47:28,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12328, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=13678, PETRI_PLACES=808, PETRI_TRANSITIONS=719} [2022-11-16 12:47:28,528 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 732 predicate places. [2022-11-16 12:47:28,528 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 719 transitions, 13678 flow [2022-11-16 12:47:28,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:28,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:28,529 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:28,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-16 12:47:28,529 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:47:28,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:28,529 INFO L85 PathProgramCache]: Analyzing trace with hash 71690769, now seen corresponding path program 7 times [2022-11-16 12:47:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:28,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016126713] [2022-11-16 12:47:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:28,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:29,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:29,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016126713] [2022-11-16 12:47:29,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016126713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:29,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:29,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:47:29,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713767982] [2022-11-16 12:47:29,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:29,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:47:29,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:29,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:47:29,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:47:29,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:47:29,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 719 transitions, 13678 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:29,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:29,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:47:29,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:34,474 INFO L130 PetriNetUnfolder]: 765/3299 cut-off events. [2022-11-16 12:47:34,474 INFO L131 PetriNetUnfolder]: For 90315/90317 co-relation queries the response was YES. [2022-11-16 12:47:34,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25894 conditions, 3299 events. 765/3299 cut-off events. For 90315/90317 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 33069 event pairs, 104 based on Foata normal form. 5/3280 useless extension candidates. Maximal degree in co-relation 25594. Up to 926 conditions per place. [2022-11-16 12:47:34,736 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 661 selfloop transitions, 226 changer transitions 0/912 dead transitions. [2022-11-16 12:47:34,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 912 transitions, 18675 flow [2022-11-16 12:47:34,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:47:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 12:47:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1208 transitions. [2022-11-16 12:47:34,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42430628731998593 [2022-11-16 12:47:34,738 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1208 transitions. [2022-11-16 12:47:34,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1208 transitions. [2022-11-16 12:47:34,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:34,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1208 transitions. [2022-11-16 12:47:34,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.974358974358974) internal successors, (1208), 39 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:34,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:34,742 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:34,742 INFO L175 Difference]: Start difference. First operand has 808 places, 719 transitions, 13678 flow. Second operand 39 states and 1208 transitions. [2022-11-16 12:47:34,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 912 transitions, 18675 flow [2022-11-16 12:47:35,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 912 transitions, 18407 flow, removed 81 selfloop flow, removed 10 redundant places. [2022-11-16 12:47:35,593 INFO L231 Difference]: Finished difference. Result has 852 places, 751 transitions, 14891 flow [2022-11-16 12:47:35,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13450, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14891, PETRI_PLACES=852, PETRI_TRANSITIONS=751} [2022-11-16 12:47:35,593 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 776 predicate places. [2022-11-16 12:47:35,594 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 751 transitions, 14891 flow [2022-11-16 12:47:35,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:35,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:35,594 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:35,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-16 12:47:35,594 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:47:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash -900938735, now seen corresponding path program 8 times [2022-11-16 12:47:35,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:35,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672571228] [2022-11-16 12:47:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:35,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:36,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:36,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672571228] [2022-11-16 12:47:36,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672571228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:36,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:36,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:47:36,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026917474] [2022-11-16 12:47:36,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:36,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:47:36,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:36,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:47:36,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:47:36,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:47:36,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 751 transitions, 14891 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:36,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:36,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:47:36,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:42,109 INFO L130 PetriNetUnfolder]: 775/3344 cut-off events. [2022-11-16 12:47:42,109 INFO L131 PetriNetUnfolder]: For 102605/102607 co-relation queries the response was YES. [2022-11-16 12:47:42,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27575 conditions, 3344 events. 775/3344 cut-off events. For 102605/102607 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 33681 event pairs, 104 based on Foata normal form. 5/3324 useless extension candidates. Maximal degree in co-relation 27257. Up to 923 conditions per place. [2022-11-16 12:47:42,167 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 661 selfloop transitions, 249 changer transitions 0/935 dead transitions. [2022-11-16 12:47:42,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 935 transitions, 19810 flow [2022-11-16 12:47:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 12:47:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-16 12:47:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1287 transitions. [2022-11-16 12:47:42,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4197651663405088 [2022-11-16 12:47:42,170 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 1287 transitions. [2022-11-16 12:47:42,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 1287 transitions. [2022-11-16 12:47:42,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:42,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 1287 transitions. [2022-11-16 12:47:42,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 30.642857142857142) internal successors, (1287), 42 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:42,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 73.0) internal successors, (3139), 43 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:42,177 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 73.0) internal successors, (3139), 43 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:42,177 INFO L175 Difference]: Start difference. First operand has 852 places, 751 transitions, 14891 flow. Second operand 42 states and 1287 transitions. [2022-11-16 12:47:42,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 935 transitions, 19810 flow [2022-11-16 12:47:43,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 935 transitions, 19524 flow, removed 72 selfloop flow, removed 17 redundant places. [2022-11-16 12:47:43,280 INFO L231 Difference]: Finished difference. Result has 890 places, 777 transitions, 16020 flow [2022-11-16 12:47:43,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14627, PETRI_DIFFERENCE_MINUEND_PLACES=835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=16020, PETRI_PLACES=890, PETRI_TRANSITIONS=777} [2022-11-16 12:47:43,282 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 814 predicate places. [2022-11-16 12:47:43,282 INFO L495 AbstractCegarLoop]: Abstraction has has 890 places, 777 transitions, 16020 flow [2022-11-16 12:47:43,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:43,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:43,283 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:43,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-16 12:47:43,283 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:47:43,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1931636571, now seen corresponding path program 9 times [2022-11-16 12:47:43,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:43,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558006933] [2022-11-16 12:47:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:43,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:44,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:44,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558006933] [2022-11-16 12:47:44,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558006933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:44,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:44,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:47:44,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912783695] [2022-11-16 12:47:44,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:44,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:47:44,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:47:44,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:47:44,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:47:44,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 777 transitions, 16020 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:44,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:44,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:47:44,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:50,146 INFO L130 PetriNetUnfolder]: 787/3392 cut-off events. [2022-11-16 12:47:50,147 INFO L131 PetriNetUnfolder]: For 118679/118681 co-relation queries the response was YES. [2022-11-16 12:47:50,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29278 conditions, 3392 events. 787/3392 cut-off events. For 118679/118681 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 34307 event pairs, 104 based on Foata normal form. 5/3371 useless extension candidates. Maximal degree in co-relation 28947. Up to 916 conditions per place. [2022-11-16 12:47:50,218 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 663 selfloop transitions, 272 changer transitions 0/960 dead transitions. [2022-11-16 12:47:50,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 960 transitions, 21118 flow [2022-11-16 12:47:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 12:47:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-16 12:47:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1317 transitions. [2022-11-16 12:47:50,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4195603695444409 [2022-11-16 12:47:50,221 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1317 transitions. [2022-11-16 12:47:50,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1317 transitions. [2022-11-16 12:47:50,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:50,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1317 transitions. [2022-11-16 12:47:50,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.627906976744185) internal successors, (1317), 43 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:50,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:50,225 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:50,225 INFO L175 Difference]: Start difference. First operand has 890 places, 777 transitions, 16020 flow. Second operand 43 states and 1317 transitions. [2022-11-16 12:47:50,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 960 transitions, 21118 flow [2022-11-16 12:47:51,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 960 transitions, 20668 flow, removed 91 selfloop flow, removed 21 redundant places. [2022-11-16 12:47:51,963 INFO L231 Difference]: Finished difference. Result has 926 places, 802 transitions, 17197 flow [2022-11-16 12:47:51,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15610, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=17197, PETRI_PLACES=926, PETRI_TRANSITIONS=802} [2022-11-16 12:47:51,964 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 850 predicate places. [2022-11-16 12:47:51,964 INFO L495 AbstractCegarLoop]: Abstraction has has 926 places, 802 transitions, 17197 flow [2022-11-16 12:47:51,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:51,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:47:51,965 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:51,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-16 12:47:51,965 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:47:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:51,966 INFO L85 PathProgramCache]: Analyzing trace with hash -839170485, now seen corresponding path program 10 times [2022-11-16 12:47:51,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:51,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600701400] [2022-11-16 12:47:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:51,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:52,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600701400] [2022-11-16 12:47:52,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600701400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:52,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:52,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:47:52,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099626296] [2022-11-16 12:47:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:52,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:47:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:52,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:47:52,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:47:52,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:47:52,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 802 transitions, 17197 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:52,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:47:52,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:47:52,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:47:58,531 INFO L130 PetriNetUnfolder]: 801/3471 cut-off events. [2022-11-16 12:47:58,531 INFO L131 PetriNetUnfolder]: For 133335/133337 co-relation queries the response was YES. [2022-11-16 12:47:58,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30849 conditions, 3471 events. 801/3471 cut-off events. For 133335/133337 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 35320 event pairs, 108 based on Foata normal form. 5/3449 useless extension candidates. Maximal degree in co-relation 30506. Up to 912 conditions per place. [2022-11-16 12:47:58,596 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 679 selfloop transitions, 293 changer transitions 0/997 dead transitions. [2022-11-16 12:47:58,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 997 transitions, 22652 flow [2022-11-16 12:47:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:47:58,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 12:47:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1199 transitions. [2022-11-16 12:47:58,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42114506498068144 [2022-11-16 12:47:58,599 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1199 transitions. [2022-11-16 12:47:58,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1199 transitions. [2022-11-16 12:47:58,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:47:58,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1199 transitions. [2022-11-16 12:47:58,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.743589743589745) internal successors, (1199), 39 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:58,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:58,602 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:58,602 INFO L175 Difference]: Start difference. First operand has 926 places, 802 transitions, 17197 flow. Second operand 39 states and 1199 transitions. [2022-11-16 12:47:58,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 997 transitions, 22652 flow [2022-11-16 12:48:00,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 997 transitions, 22199 flow, removed 86 selfloop flow, removed 27 redundant places. [2022-11-16 12:48:00,222 INFO L231 Difference]: Finished difference. Result has 952 places, 836 transitions, 18569 flow [2022-11-16 12:48:00,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16788, PETRI_DIFFERENCE_MINUEND_PLACES=899, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18569, PETRI_PLACES=952, PETRI_TRANSITIONS=836} [2022-11-16 12:48:00,223 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 876 predicate places. [2022-11-16 12:48:00,223 INFO L495 AbstractCegarLoop]: Abstraction has has 952 places, 836 transitions, 18569 flow [2022-11-16 12:48:00,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:00,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:00,224 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:00,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-16 12:48:00,224 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:48:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:00,225 INFO L85 PathProgramCache]: Analyzing trace with hash -672298257, now seen corresponding path program 11 times [2022-11-16 12:48:00,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:00,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872249433] [2022-11-16 12:48:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:00,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:01,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:01,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872249433] [2022-11-16 12:48:01,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872249433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:01,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:01,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:48:01,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486191183] [2022-11-16 12:48:01,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:01,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:48:01,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:01,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:48:01,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:48:01,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:48:01,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 836 transitions, 18569 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:01,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:01,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:48:01,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:08,233 INFO L130 PetriNetUnfolder]: 815/3558 cut-off events. [2022-11-16 12:48:08,233 INFO L131 PetriNetUnfolder]: For 160150/160152 co-relation queries the response was YES. [2022-11-16 12:48:08,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32649 conditions, 3558 events. 815/3558 cut-off events. For 160150/160152 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36622 event pairs, 169 based on Foata normal form. 5/3535 useless extension candidates. Maximal degree in co-relation 32294. Up to 1139 conditions per place. [2022-11-16 12:48:08,298 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 653 selfloop transitions, 317 changer transitions 0/995 dead transitions. [2022-11-16 12:48:08,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 994 places, 995 transitions, 23422 flow [2022-11-16 12:48:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 12:48:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-16 12:48:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1310 transitions. [2022-11-16 12:48:08,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4173303599872571 [2022-11-16 12:48:08,301 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1310 transitions. [2022-11-16 12:48:08,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1310 transitions. [2022-11-16 12:48:08,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:08,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1310 transitions. [2022-11-16 12:48:08,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.46511627906977) internal successors, (1310), 43 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:08,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:08,306 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:08,306 INFO L175 Difference]: Start difference. First operand has 952 places, 836 transitions, 18569 flow. Second operand 43 states and 1310 transitions. [2022-11-16 12:48:08,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 994 places, 995 transitions, 23422 flow [2022-11-16 12:48:10,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 982 places, 995 transitions, 23026 flow, removed 109 selfloop flow, removed 12 redundant places. [2022-11-16 12:48:10,268 INFO L231 Difference]: Finished difference. Result has 994 places, 867 transitions, 19982 flow [2022-11-16 12:48:10,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18229, PETRI_DIFFERENCE_MINUEND_PLACES=940, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=19982, PETRI_PLACES=994, PETRI_TRANSITIONS=867} [2022-11-16 12:48:10,270 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 918 predicate places. [2022-11-16 12:48:10,270 INFO L495 AbstractCegarLoop]: Abstraction has has 994 places, 867 transitions, 19982 flow [2022-11-16 12:48:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:10,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:10,270 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:10,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-16 12:48:10,270 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:48:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -477116039, now seen corresponding path program 12 times [2022-11-16 12:48:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:10,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651506180] [2022-11-16 12:48:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:11,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:11,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651506180] [2022-11-16 12:48:11,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651506180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:11,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:11,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:48:11,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579993982] [2022-11-16 12:48:11,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:11,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:48:11,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:48:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:48:11,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:48:11,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 867 transitions, 19982 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:11,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:11,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:48:11,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:20,537 INFO L130 PetriNetUnfolder]: 801/3433 cut-off events. [2022-11-16 12:48:20,537 INFO L131 PetriNetUnfolder]: For 160433/160435 co-relation queries the response was YES. [2022-11-16 12:48:20,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32807 conditions, 3433 events. 801/3433 cut-off events. For 160433/160435 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 34878 event pairs, 23 based on Foata normal form. 23/3429 useless extension candidates. Maximal degree in co-relation 32440. Up to 568 conditions per place. [2022-11-16 12:48:20,601 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 557 selfloop transitions, 558 changer transitions 0/1140 dead transitions. [2022-11-16 12:48:20,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1055 places, 1140 transitions, 27217 flow [2022-11-16 12:48:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 12:48:20,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-16 12:48:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 1861 transitions. [2022-11-16 12:48:20,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4111798497569598 [2022-11-16 12:48:20,603 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 1861 transitions. [2022-11-16 12:48:20,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 1861 transitions. [2022-11-16 12:48:20,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:20,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 1861 transitions. [2022-11-16 12:48:20,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 30.016129032258064) internal successors, (1861), 62 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 73.0) internal successors, (4599), 63 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,608 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 73.0) internal successors, (4599), 63 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:20,609 INFO L175 Difference]: Start difference. First operand has 994 places, 867 transitions, 19982 flow. Second operand 62 states and 1861 transitions. [2022-11-16 12:48:20,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1055 places, 1140 transitions, 27217 flow [2022-11-16 12:48:22,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1033 places, 1140 transitions, 26702 flow, removed 104 selfloop flow, removed 22 redundant places. [2022-11-16 12:48:22,642 INFO L231 Difference]: Finished difference. Result has 1045 places, 942 transitions, 22950 flow [2022-11-16 12:48:22,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19557, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=22950, PETRI_PLACES=1045, PETRI_TRANSITIONS=942} [2022-11-16 12:48:22,643 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 969 predicate places. [2022-11-16 12:48:22,643 INFO L495 AbstractCegarLoop]: Abstraction has has 1045 places, 942 transitions, 22950 flow [2022-11-16 12:48:22,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:22,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:22,644 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:22,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-16 12:48:22,644 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:48:22,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:22,644 INFO L85 PathProgramCache]: Analyzing trace with hash 221570866, now seen corresponding path program 9 times [2022-11-16 12:48:22,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:22,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157272248] [2022-11-16 12:48:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:22,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:23,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:23,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157272248] [2022-11-16 12:48:23,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157272248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:23,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:23,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:48:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900243519] [2022-11-16 12:48:23,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:23,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:48:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:23,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:48:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:48:23,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:48:23,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1045 places, 942 transitions, 22950 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:23,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:48:23,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:29,271 INFO L130 PetriNetUnfolder]: 828/3544 cut-off events. [2022-11-16 12:48:29,271 INFO L131 PetriNetUnfolder]: For 188444/188448 co-relation queries the response was YES. [2022-11-16 12:48:29,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35171 conditions, 3544 events. 828/3544 cut-off events. For 188444/188448 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36366 event pairs, 131 based on Foata normal form. 3/3520 useless extension candidates. Maximal degree in co-relation 34799. Up to 1358 conditions per place. [2022-11-16 12:48:29,458 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 834 selfloop transitions, 240 changer transitions 0/1099 dead transitions. [2022-11-16 12:48:29,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1074 places, 1099 transitions, 27747 flow [2022-11-16 12:48:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:48:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:48:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 938 transitions. [2022-11-16 12:48:29,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.428310502283105 [2022-11-16 12:48:29,460 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 938 transitions. [2022-11-16 12:48:29,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 938 transitions. [2022-11-16 12:48:29,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:29,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 938 transitions. [2022-11-16 12:48:29,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 31.266666666666666) internal successors, (938), 30 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:29,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:29,463 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:29,463 INFO L175 Difference]: Start difference. First operand has 1045 places, 942 transitions, 22950 flow. Second operand 30 states and 938 transitions. [2022-11-16 12:48:29,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1074 places, 1099 transitions, 27747 flow [2022-11-16 12:48:31,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 1099 transitions, 26449 flow, removed 138 selfloop flow, removed 31 redundant places. [2022-11-16 12:48:31,491 INFO L231 Difference]: Finished difference. Result has 1053 places, 979 transitions, 23303 flow [2022-11-16 12:48:31,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=21824, PETRI_DIFFERENCE_MINUEND_PLACES=1014, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=721, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=23303, PETRI_PLACES=1053, PETRI_TRANSITIONS=979} [2022-11-16 12:48:31,493 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 977 predicate places. [2022-11-16 12:48:31,493 INFO L495 AbstractCegarLoop]: Abstraction has has 1053 places, 979 transitions, 23303 flow [2022-11-16 12:48:31,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:31,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:31,493 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:31,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-16 12:48:31,494 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:48:31,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:31,494 INFO L85 PathProgramCache]: Analyzing trace with hash -399715382, now seen corresponding path program 10 times [2022-11-16 12:48:31,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:31,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457130081] [2022-11-16 12:48:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:32,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:32,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457130081] [2022-11-16 12:48:32,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457130081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:32,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:32,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:48:32,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122809387] [2022-11-16 12:48:32,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:32,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:48:32,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:32,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:48:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:48:32,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:48:32,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1053 places, 979 transitions, 23303 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:32,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:32,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:48:32,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:38,282 INFO L130 PetriNetUnfolder]: 832/3543 cut-off events. [2022-11-16 12:48:38,282 INFO L131 PetriNetUnfolder]: For 177205/177209 co-relation queries the response was YES. [2022-11-16 12:48:38,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34986 conditions, 3543 events. 832/3543 cut-off events. For 177205/177209 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 36149 event pairs, 104 based on Foata normal form. 3/3519 useless extension candidates. Maximal degree in co-relation 34617. Up to 1016 conditions per place. [2022-11-16 12:48:38,343 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 874 selfloop transitions, 245 changer transitions 0/1144 dead transitions. [2022-11-16 12:48:38,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1083 places, 1144 transitions, 28069 flow [2022-11-16 12:48:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:48:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 12:48:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 976 transitions. [2022-11-16 12:48:38,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43128590366769776 [2022-11-16 12:48:38,345 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 976 transitions. [2022-11-16 12:48:38,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 976 transitions. [2022-11-16 12:48:38,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:38,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 976 transitions. [2022-11-16 12:48:38,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 31.483870967741936) internal successors, (976), 31 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:38,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:38,350 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:38,350 INFO L175 Difference]: Start difference. First operand has 1053 places, 979 transitions, 23303 flow. Second operand 31 states and 976 transitions. [2022-11-16 12:48:38,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1083 places, 1144 transitions, 28069 flow [2022-11-16 12:48:40,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1073 places, 1144 transitions, 27797 flow, removed 43 selfloop flow, removed 10 redundant places. [2022-11-16 12:48:40,556 INFO L231 Difference]: Finished difference. Result has 1081 places, 1000 transitions, 24051 flow [2022-11-16 12:48:40,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=23047, PETRI_DIFFERENCE_MINUEND_PLACES=1043, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=24051, PETRI_PLACES=1081, PETRI_TRANSITIONS=1000} [2022-11-16 12:48:40,558 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1005 predicate places. [2022-11-16 12:48:40,558 INFO L495 AbstractCegarLoop]: Abstraction has has 1081 places, 1000 transitions, 24051 flow [2022-11-16 12:48:40,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:40,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:40,559 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:40,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-16 12:48:40,559 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:48:40,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash 118263444, now seen corresponding path program 11 times [2022-11-16 12:48:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:40,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644511481] [2022-11-16 12:48:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:41,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:41,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644511481] [2022-11-16 12:48:41,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644511481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:41,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:41,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:48:41,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289587301] [2022-11-16 12:48:41,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:41,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:48:41,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:41,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:48:41,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:48:41,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:48:41,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1081 places, 1000 transitions, 24051 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:41,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:41,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:48:41,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:48,489 INFO L130 PetriNetUnfolder]: 837/3574 cut-off events. [2022-11-16 12:48:48,490 INFO L131 PetriNetUnfolder]: For 186342/186346 co-relation queries the response was YES. [2022-11-16 12:48:48,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35777 conditions, 3574 events. 837/3574 cut-off events. For 186342/186346 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36628 event pairs, 75 based on Foata normal form. 3/3550 useless extension candidates. Maximal degree in co-relation 35396. Up to 990 conditions per place. [2022-11-16 12:48:48,555 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 819 selfloop transitions, 332 changer transitions 0/1176 dead transitions. [2022-11-16 12:48:48,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1119 places, 1176 transitions, 28932 flow [2022-11-16 12:48:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:48:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 12:48:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1199 transitions. [2022-11-16 12:48:48,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42114506498068144 [2022-11-16 12:48:48,558 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1199 transitions. [2022-11-16 12:48:48,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1199 transitions. [2022-11-16 12:48:48,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:48,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1199 transitions. [2022-11-16 12:48:48,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.743589743589745) internal successors, (1199), 39 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:48,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:48,564 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:48,564 INFO L175 Difference]: Start difference. First operand has 1081 places, 1000 transitions, 24051 flow. Second operand 39 states and 1199 transitions. [2022-11-16 12:48:48,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1119 places, 1176 transitions, 28932 flow [2022-11-16 12:48:50,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1105 places, 1176 transitions, 28420 flow, removed 43 selfloop flow, removed 14 redundant places. [2022-11-16 12:48:50,976 INFO L231 Difference]: Finished difference. Result has 1116 places, 1031 transitions, 24874 flow [2022-11-16 12:48:50,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=23539, PETRI_DIFFERENCE_MINUEND_PLACES=1067, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=24874, PETRI_PLACES=1116, PETRI_TRANSITIONS=1031} [2022-11-16 12:48:50,977 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1040 predicate places. [2022-11-16 12:48:50,978 INFO L495 AbstractCegarLoop]: Abstraction has has 1116 places, 1031 transitions, 24874 flow [2022-11-16 12:48:50,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:50,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:48:50,978 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:50,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-16 12:48:50,979 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:48:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1274672912, now seen corresponding path program 12 times [2022-11-16 12:48:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:50,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27293593] [2022-11-16 12:48:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:50,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:51,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:51,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27293593] [2022-11-16 12:48:51,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27293593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:51,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:51,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:48:51,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841222994] [2022-11-16 12:48:51,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:51,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:48:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:51,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:48:51,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:48:51,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:48:51,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1116 places, 1031 transitions, 24874 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:51,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:48:51,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:48:51,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:48:59,221 INFO L130 PetriNetUnfolder]: 839/3624 cut-off events. [2022-11-16 12:48:59,221 INFO L131 PetriNetUnfolder]: For 206430/206434 co-relation queries the response was YES. [2022-11-16 12:48:59,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36400 conditions, 3624 events. 839/3624 cut-off events. For 206430/206434 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 37414 event pairs, 149 based on Foata normal form. 3/3600 useless extension candidates. Maximal degree in co-relation 36007. Up to 1398 conditions per place. [2022-11-16 12:48:59,296 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 906 selfloop transitions, 238 changer transitions 0/1169 dead transitions. [2022-11-16 12:48:59,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1153 places, 1169 transitions, 29212 flow [2022-11-16 12:48:59,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 12:48:59,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 12:48:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1168 transitions. [2022-11-16 12:48:59,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-11-16 12:48:59,300 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1168 transitions. [2022-11-16 12:48:59,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1168 transitions. [2022-11-16 12:48:59,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:48:59,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1168 transitions. [2022-11-16 12:48:59,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.736842105263158) internal successors, (1168), 38 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:59,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:59,307 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:59,307 INFO L175 Difference]: Start difference. First operand has 1116 places, 1031 transitions, 24874 flow. Second operand 38 states and 1168 transitions. [2022-11-16 12:48:59,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1153 places, 1169 transitions, 29212 flow [2022-11-16 12:49:01,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1137 places, 1169 transitions, 28723 flow, removed 37 selfloop flow, removed 16 redundant places. [2022-11-16 12:49:01,617 INFO L231 Difference]: Finished difference. Result has 1148 places, 1061 transitions, 25596 flow [2022-11-16 12:49:01,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=24392, PETRI_DIFFERENCE_MINUEND_PLACES=1100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1031, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=25596, PETRI_PLACES=1148, PETRI_TRANSITIONS=1061} [2022-11-16 12:49:01,618 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1072 predicate places. [2022-11-16 12:49:01,618 INFO L495 AbstractCegarLoop]: Abstraction has has 1148 places, 1061 transitions, 25596 flow [2022-11-16 12:49:01,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:01,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:01,619 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:01,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-16 12:49:01,619 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:49:01,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:01,620 INFO L85 PathProgramCache]: Analyzing trace with hash -830193998, now seen corresponding path program 13 times [2022-11-16 12:49:01,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:01,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058634344] [2022-11-16 12:49:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:01,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:02,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:02,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058634344] [2022-11-16 12:49:02,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058634344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:02,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:02,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:49:02,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058160141] [2022-11-16 12:49:02,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:02,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:49:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:49:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:49:02,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:49:02,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1148 places, 1061 transitions, 25596 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:02,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:02,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:49:02,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:12,518 INFO L130 PetriNetUnfolder]: 841/3617 cut-off events. [2022-11-16 12:49:12,518 INFO L131 PetriNetUnfolder]: For 200997/201001 co-relation queries the response was YES. [2022-11-16 12:49:12,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36679 conditions, 3617 events. 841/3617 cut-off events. For 200997/201001 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 37236 event pairs, 2 based on Foata normal form. 3/3593 useless extension candidates. Maximal degree in co-relation 36280. Up to 823 conditions per place. [2022-11-16 12:49:12,581 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 733 selfloop transitions, 520 changer transitions 0/1278 dead transitions. [2022-11-16 12:49:12,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1205 places, 1278 transitions, 31377 flow [2022-11-16 12:49:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-16 12:49:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-16 12:49:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1736 transitions. [2022-11-16 12:49:12,584 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41001417099669346 [2022-11-16 12:49:12,584 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1736 transitions. [2022-11-16 12:49:12,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1736 transitions. [2022-11-16 12:49:12,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:12,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1736 transitions. [2022-11-16 12:49:12,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 29.93103448275862) internal successors, (1736), 58 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) [2022-11-16 12:49:12,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:12,591 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:12,591 INFO L175 Difference]: Start difference. First operand has 1148 places, 1061 transitions, 25596 flow. Second operand 58 states and 1736 transitions. [2022-11-16 12:49:12,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1205 places, 1278 transitions, 31377 flow [2022-11-16 12:49:15,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1191 places, 1278 transitions, 31083 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-11-16 12:49:15,037 INFO L231 Difference]: Finished difference. Result has 1197 places, 1094 transitions, 27152 flow [2022-11-16 12:49:15,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=25322, PETRI_DIFFERENCE_MINUEND_PLACES=1134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=487, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=27152, PETRI_PLACES=1197, PETRI_TRANSITIONS=1094} [2022-11-16 12:49:15,038 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1121 predicate places. [2022-11-16 12:49:15,038 INFO L495 AbstractCegarLoop]: Abstraction has has 1197 places, 1094 transitions, 27152 flow [2022-11-16 12:49:15,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:15,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:15,038 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:15,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-16 12:49:15,038 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:49:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1451480246, now seen corresponding path program 14 times [2022-11-16 12:49:15,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:15,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089254233] [2022-11-16 12:49:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:15,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:15,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089254233] [2022-11-16 12:49:15,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089254233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:15,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:15,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:49:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509268039] [2022-11-16 12:49:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:15,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:49:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:49:15,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:49:15,742 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:49:15,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 1094 transitions, 27152 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:15,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:15,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:49:15,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:25,519 INFO L130 PetriNetUnfolder]: 841/3647 cut-off events. [2022-11-16 12:49:25,519 INFO L131 PetriNetUnfolder]: For 223288/223292 co-relation queries the response was YES. [2022-11-16 12:49:25,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37835 conditions, 3647 events. 841/3647 cut-off events. For 223288/223292 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 37832 event pairs, 71 based on Foata normal form. 5/3625 useless extension candidates. Maximal degree in co-relation 37427. Up to 1207 conditions per place. [2022-11-16 12:49:25,583 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 802 selfloop transitions, 423 changer transitions 0/1250 dead transitions. [2022-11-16 12:49:25,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1252 places, 1250 transitions, 31768 flow [2022-11-16 12:49:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 12:49:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-16 12:49:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1684 transitions. [2022-11-16 12:49:25,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41193737769080235 [2022-11-16 12:49:25,586 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1684 transitions. [2022-11-16 12:49:25,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1684 transitions. [2022-11-16 12:49:25,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:25,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1684 transitions. [2022-11-16 12:49:25,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.071428571428573) internal successors, (1684), 56 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:25,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:25,592 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:25,592 INFO L175 Difference]: Start difference. First operand has 1197 places, 1094 transitions, 27152 flow. Second operand 56 states and 1684 transitions. [2022-11-16 12:49:25,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1252 places, 1250 transitions, 31768 flow [2022-11-16 12:49:28,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1193 places, 1250 transitions, 30496 flow, removed 61 selfloop flow, removed 59 redundant places. [2022-11-16 12:49:28,166 INFO L231 Difference]: Finished difference. Result has 1197 places, 1103 transitions, 27207 flow [2022-11-16 12:49:28,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=26057, PETRI_DIFFERENCE_MINUEND_PLACES=1138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=414, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=27207, PETRI_PLACES=1197, PETRI_TRANSITIONS=1103} [2022-11-16 12:49:28,168 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1121 predicate places. [2022-11-16 12:49:28,168 INFO L495 AbstractCegarLoop]: Abstraction has has 1197 places, 1103 transitions, 27207 flow [2022-11-16 12:49:28,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:28,168 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:28,168 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:28,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-16 12:49:28,168 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:49:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:28,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1094530554, now seen corresponding path program 15 times [2022-11-16 12:49:28,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:28,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897156599] [2022-11-16 12:49:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:28,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:29,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897156599] [2022-11-16 12:49:29,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897156599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:29,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:29,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:49:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086111664] [2022-11-16 12:49:29,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:29,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:49:29,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:49:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:49:29,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:49:29,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 1103 transitions, 27207 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:29,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:29,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:49:29,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:35,039 INFO L130 PetriNetUnfolder]: 860/3677 cut-off events. [2022-11-16 12:49:35,039 INFO L131 PetriNetUnfolder]: For 219472/219478 co-relation queries the response was YES. [2022-11-16 12:49:35,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38309 conditions, 3677 events. 860/3677 cut-off events. For 219472/219478 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 37864 event pairs, 64 based on Foata normal form. 3/3654 useless extension candidates. Maximal degree in co-relation 37924. Up to 999 conditions per place. [2022-11-16 12:49:35,112 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 884 selfloop transitions, 369 changer transitions 0/1278 dead transitions. [2022-11-16 12:49:35,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1229 places, 1278 transitions, 32626 flow [2022-11-16 12:49:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:49:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-16 12:49:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1026 transitions. [2022-11-16 12:49:35,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4259028642590286 [2022-11-16 12:49:35,114 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1026 transitions. [2022-11-16 12:49:35,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1026 transitions. [2022-11-16 12:49:35,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:35,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1026 transitions. [2022-11-16 12:49:35,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 31.09090909090909) internal successors, (1026), 33 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:35,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:35,117 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:35,117 INFO L175 Difference]: Start difference. First operand has 1197 places, 1103 transitions, 27207 flow. Second operand 33 states and 1026 transitions. [2022-11-16 12:49:35,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1229 places, 1278 transitions, 32626 flow [2022-11-16 12:49:37,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1198 places, 1278 transitions, 31987 flow, removed 20 selfloop flow, removed 31 redundant places. [2022-11-16 12:49:37,874 INFO L231 Difference]: Finished difference. Result has 1209 places, 1127 transitions, 28229 flow [2022-11-16 12:49:37,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=26600, PETRI_DIFFERENCE_MINUEND_PLACES=1166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=28229, PETRI_PLACES=1209, PETRI_TRANSITIONS=1127} [2022-11-16 12:49:37,875 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1133 predicate places. [2022-11-16 12:49:37,876 INFO L495 AbstractCegarLoop]: Abstraction has has 1209 places, 1127 transitions, 28229 flow [2022-11-16 12:49:37,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:37,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:37,876 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:37,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-16 12:49:37,876 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:49:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 294027366, now seen corresponding path program 16 times [2022-11-16 12:49:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:37,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586738212] [2022-11-16 12:49:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:38,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586738212] [2022-11-16 12:49:38,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586738212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:38,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:38,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:49:38,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202758322] [2022-11-16 12:49:38,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:38,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:49:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:49:38,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:49:38,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:49:38,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1209 places, 1127 transitions, 28229 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:38,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:38,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:49:38,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:45,029 INFO L130 PetriNetUnfolder]: 862/3708 cut-off events. [2022-11-16 12:49:45,029 INFO L131 PetriNetUnfolder]: For 246171/246177 co-relation queries the response was YES. [2022-11-16 12:49:45,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39174 conditions, 3708 events. 862/3708 cut-off events. For 246171/246177 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 38570 event pairs, 108 based on Foata normal form. 3/3685 useless extension candidates. Maximal degree in co-relation 38779. Up to 1367 conditions per place. [2022-11-16 12:49:45,095 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 898 selfloop transitions, 342 changer transitions 0/1265 dead transitions. [2022-11-16 12:49:45,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1243 places, 1265 transitions, 32785 flow [2022-11-16 12:49:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:49:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:49:45,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1077 transitions. [2022-11-16 12:49:45,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4215264187866928 [2022-11-16 12:49:45,097 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1077 transitions. [2022-11-16 12:49:45,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1077 transitions. [2022-11-16 12:49:45,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:45,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1077 transitions. [2022-11-16 12:49:45,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 30.771428571428572) internal successors, (1077), 35 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:45,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:45,100 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:45,100 INFO L175 Difference]: Start difference. First operand has 1209 places, 1127 transitions, 28229 flow. Second operand 35 states and 1077 transitions. [2022-11-16 12:49:45,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1243 places, 1265 transitions, 32785 flow [2022-11-16 12:49:47,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1225 places, 1265 transitions, 31995 flow, removed 95 selfloop flow, removed 18 redundant places. [2022-11-16 12:49:47,795 INFO L231 Difference]: Finished difference. Result has 1232 places, 1146 transitions, 28708 flow [2022-11-16 12:49:47,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=27511, PETRI_DIFFERENCE_MINUEND_PLACES=1191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=28708, PETRI_PLACES=1232, PETRI_TRANSITIONS=1146} [2022-11-16 12:49:47,796 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1156 predicate places. [2022-11-16 12:49:47,796 INFO L495 AbstractCegarLoop]: Abstraction has has 1232 places, 1146 transitions, 28708 flow [2022-11-16 12:49:47,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:47,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:47,796 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:47,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-16 12:49:47,796 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:49:47,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash -699250246, now seen corresponding path program 17 times [2022-11-16 12:49:47,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:47,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040570855] [2022-11-16 12:49:47,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:47,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:48,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:48,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040570855] [2022-11-16 12:49:48,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040570855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:48,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:48,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:49:48,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307787404] [2022-11-16 12:49:48,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:48,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:49:48,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:48,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:49:48,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:49:48,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:49:48,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1232 places, 1146 transitions, 28708 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:48,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:48,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:49:48,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:49:54,558 INFO L130 PetriNetUnfolder]: 861/3718 cut-off events. [2022-11-16 12:49:54,558 INFO L131 PetriNetUnfolder]: For 251302/251308 co-relation queries the response was YES. [2022-11-16 12:49:54,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39429 conditions, 3718 events. 861/3718 cut-off events. For 251302/251308 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 38754 event pairs, 112 based on Foata normal form. 3/3695 useless extension candidates. Maximal degree in co-relation 39030. Up to 1254 conditions per place. [2022-11-16 12:49:54,630 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 861 selfloop transitions, 397 changer transitions 0/1283 dead transitions. [2022-11-16 12:49:54,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1263 places, 1283 transitions, 33367 flow [2022-11-16 12:49:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:49:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:49:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 984 transitions. [2022-11-16 12:49:54,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2022-11-16 12:49:54,632 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 984 transitions. [2022-11-16 12:49:54,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 984 transitions. [2022-11-16 12:49:54,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:49:54,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 984 transitions. [2022-11-16 12:49:54,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 30.75) internal successors, (984), 32 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:54,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:54,636 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:54,637 INFO L175 Difference]: Start difference. First operand has 1232 places, 1146 transitions, 28708 flow. Second operand 32 states and 984 transitions. [2022-11-16 12:49:54,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1263 places, 1283 transitions, 33367 flow [2022-11-16 12:49:57,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1244 places, 1283 transitions, 32804 flow, removed 41 selfloop flow, removed 19 redundant places. [2022-11-16 12:49:57,612 INFO L231 Difference]: Finished difference. Result has 1250 places, 1160 transitions, 29500 flow [2022-11-16 12:49:57,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=28156, PETRI_DIFFERENCE_MINUEND_PLACES=1213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=29500, PETRI_PLACES=1250, PETRI_TRANSITIONS=1160} [2022-11-16 12:49:57,613 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1174 predicate places. [2022-11-16 12:49:57,613 INFO L495 AbstractCegarLoop]: Abstraction has has 1250 places, 1160 transitions, 29500 flow [2022-11-16 12:49:57,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:57,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:49:57,613 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:57,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-16 12:49:57,613 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:49:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2146295418, now seen corresponding path program 18 times [2022-11-16 12:49:57,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:57,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529918952] [2022-11-16 12:49:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:57,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:58,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:58,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:58,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529918952] [2022-11-16 12:49:58,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529918952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:49:58,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:49:58,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:49:58,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690757026] [2022-11-16 12:49:58,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:49:58,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:49:58,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:58,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:49:58,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:49:58,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:49:58,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1250 places, 1160 transitions, 29500 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:49:58,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:49:58,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:49:58,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:09,426 INFO L130 PetriNetUnfolder]: 863/3722 cut-off events. [2022-11-16 12:50:09,426 INFO L131 PetriNetUnfolder]: For 247809/247815 co-relation queries the response was YES. [2022-11-16 12:50:09,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40211 conditions, 3722 events. 863/3722 cut-off events. For 247809/247815 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 38618 event pairs, 2 based on Foata normal form. 3/3699 useless extension candidates. Maximal degree in co-relation 39807. Up to 737 conditions per place. [2022-11-16 12:50:09,496 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 715 selfloop transitions, 626 changer transitions 0/1366 dead transitions. [2022-11-16 12:50:09,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1313 places, 1366 transitions, 35005 flow [2022-11-16 12:50:09,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-16 12:50:09,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-16 12:50:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1901 transitions. [2022-11-16 12:50:09,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4068921232876712 [2022-11-16 12:50:09,499 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 1901 transitions. [2022-11-16 12:50:09,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 1901 transitions. [2022-11-16 12:50:09,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:09,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 1901 transitions. [2022-11-16 12:50:09,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 29.703125) internal successors, (1901), 64 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:09,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:09,504 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:09,505 INFO L175 Difference]: Start difference. First operand has 1250 places, 1160 transitions, 29500 flow. Second operand 64 states and 1901 transitions. [2022-11-16 12:50:09,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1313 places, 1366 transitions, 35005 flow [2022-11-16 12:50:12,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1292 places, 1366 transitions, 34167 flow, removed 55 selfloop flow, removed 21 redundant places. [2022-11-16 12:50:12,619 INFO L231 Difference]: Finished difference. Result has 1298 places, 1176 transitions, 30447 flow [2022-11-16 12:50:12,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=28678, PETRI_DIFFERENCE_MINUEND_PLACES=1229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=30447, PETRI_PLACES=1298, PETRI_TRANSITIONS=1176} [2022-11-16 12:50:12,621 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1222 predicate places. [2022-11-16 12:50:12,621 INFO L495 AbstractCegarLoop]: Abstraction has has 1298 places, 1176 transitions, 30447 flow [2022-11-16 12:50:12,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:12,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:12,621 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:12,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-16 12:50:12,621 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:50:12,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1999101956, now seen corresponding path program 19 times [2022-11-16 12:50:12,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:12,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814255362] [2022-11-16 12:50:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:12,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:13,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:13,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814255362] [2022-11-16 12:50:13,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814255362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:13,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:13,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:50:13,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469953493] [2022-11-16 12:50:13,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:13,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:50:13,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:13,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:50:13,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:50:13,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:50:13,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1298 places, 1176 transitions, 30447 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:13,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:13,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:50:13,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:19,868 INFO L130 PetriNetUnfolder]: 865/3754 cut-off events. [2022-11-16 12:50:19,868 INFO L131 PetriNetUnfolder]: For 256129/256135 co-relation queries the response was YES. [2022-11-16 12:50:19,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41196 conditions, 3754 events. 865/3754 cut-off events. For 256129/256135 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 39108 event pairs, 64 based on Foata normal form. 3/3731 useless extension candidates. Maximal degree in co-relation 40788. Up to 898 conditions per place. [2022-11-16 12:50:19,945 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 858 selfloop transitions, 455 changer transitions 0/1338 dead transitions. [2022-11-16 12:50:19,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1331 places, 1338 transitions, 35529 flow [2022-11-16 12:50:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:50:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 12:50:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1050 transitions. [2022-11-16 12:50:19,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42304593070104757 [2022-11-16 12:50:19,947 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1050 transitions. [2022-11-16 12:50:19,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1050 transitions. [2022-11-16 12:50:19,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:19,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1050 transitions. [2022-11-16 12:50:19,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 30.88235294117647) internal successors, (1050), 34 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:19,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:19,950 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:19,950 INFO L175 Difference]: Start difference. First operand has 1298 places, 1176 transitions, 30447 flow. Second operand 34 states and 1050 transitions. [2022-11-16 12:50:19,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1331 places, 1338 transitions, 35529 flow [2022-11-16 12:50:23,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1273 places, 1338 transitions, 34290 flow, removed 34 selfloop flow, removed 58 redundant places. [2022-11-16 12:50:23,298 INFO L231 Difference]: Finished difference. Result has 1280 places, 1187 transitions, 30515 flow [2022-11-16 12:50:23,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=29237, PETRI_DIFFERENCE_MINUEND_PLACES=1240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=30515, PETRI_PLACES=1280, PETRI_TRANSITIONS=1187} [2022-11-16 12:50:23,299 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1204 predicate places. [2022-11-16 12:50:23,299 INFO L495 AbstractCegarLoop]: Abstraction has has 1280 places, 1187 transitions, 30515 flow [2022-11-16 12:50:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:23,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:23,300 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:23,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-16 12:50:23,300 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:50:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash -430287818, now seen corresponding path program 20 times [2022-11-16 12:50:23,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:23,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458016855] [2022-11-16 12:50:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:24,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:24,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458016855] [2022-11-16 12:50:24,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458016855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:24,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:24,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:50:24,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581417028] [2022-11-16 12:50:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:24,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:50:24,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:50:24,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:50:24,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:50:24,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1280 places, 1187 transitions, 30515 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:24,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:24,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:50:24,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:37,141 INFO L130 PetriNetUnfolder]: 873/3763 cut-off events. [2022-11-16 12:50:37,141 INFO L131 PetriNetUnfolder]: For 263927/263933 co-relation queries the response was YES. [2022-11-16 12:50:37,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 3763 events. 873/3763 cut-off events. For 263927/263933 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 39135 event pairs, 2 based on Foata normal form. 13/3750 useless extension candidates. Maximal degree in co-relation 41001. Up to 374 conditions per place. [2022-11-16 12:50:37,218 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 584 selfloop transitions, 805 changer transitions 0/1414 dead transitions. [2022-11-16 12:50:37,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1360 places, 1414 transitions, 36549 flow [2022-11-16 12:50:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-16 12:50:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2022-11-16 12:50:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 2364 transitions. [2022-11-16 12:50:37,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3997970573313039 [2022-11-16 12:50:37,222 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 2364 transitions. [2022-11-16 12:50:37,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 2364 transitions. [2022-11-16 12:50:37,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:37,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 2364 transitions. [2022-11-16 12:50:37,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 29.185185185185187) internal successors, (2364), 81 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:37,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 73.0) internal successors, (5986), 82 states have internal predecessors, (5986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:37,229 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 73.0) internal successors, (5986), 82 states have internal predecessors, (5986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:37,229 INFO L175 Difference]: Start difference. First operand has 1280 places, 1187 transitions, 30515 flow. Second operand 81 states and 2364 transitions. [2022-11-16 12:50:37,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1360 places, 1414 transitions, 36549 flow [2022-11-16 12:50:40,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1339 places, 1414 transitions, 35766 flow, removed 24 selfloop flow, removed 21 redundant places. [2022-11-16 12:50:40,399 INFO L231 Difference]: Finished difference. Result has 1348 places, 1233 transitions, 32436 flow [2022-11-16 12:50:40,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=29760, PETRI_DIFFERENCE_MINUEND_PLACES=1259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=761, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=32436, PETRI_PLACES=1348, PETRI_TRANSITIONS=1233} [2022-11-16 12:50:40,400 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1272 predicate places. [2022-11-16 12:50:40,401 INFO L495 AbstractCegarLoop]: Abstraction has has 1348 places, 1233 transitions, 32436 flow [2022-11-16 12:50:40,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:40,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:40,401 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-16 12:50:40,401 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:50:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1393496830, now seen corresponding path program 21 times [2022-11-16 12:50:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:40,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562861813] [2022-11-16 12:50:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:40,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562861813] [2022-11-16 12:50:40,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562861813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:40,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:40,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:50:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899449002] [2022-11-16 12:50:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:40,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:50:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:40,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:50:40,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:50:40,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:50:40,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1348 places, 1233 transitions, 32436 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:40,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:40,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:50:40,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:50,573 INFO L130 PetriNetUnfolder]: 873/3772 cut-off events. [2022-11-16 12:50:50,573 INFO L131 PetriNetUnfolder]: For 269957/269963 co-relation queries the response was YES. [2022-11-16 12:50:50,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42444 conditions, 3772 events. 873/3772 cut-off events. For 269957/269963 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 39219 event pairs, 2 based on Foata normal form. 3/3749 useless extension candidates. Maximal degree in co-relation 42023. Up to 374 conditions per place. [2022-11-16 12:50:50,644 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 548 selfloop transitions, 816 changer transitions 0/1389 dead transitions. [2022-11-16 12:50:50,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1404 places, 1389 transitions, 37384 flow [2022-11-16 12:50:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-16 12:50:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-16 12:50:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1692 transitions. [2022-11-16 12:50:50,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3996221067548418 [2022-11-16 12:50:50,647 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1692 transitions. [2022-11-16 12:50:50,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1692 transitions. [2022-11-16 12:50:50,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:50,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1692 transitions. [2022-11-16 12:50:50,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 29.17241379310345) internal successors, (1692), 58 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:50,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:50,653 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:50,653 INFO L175 Difference]: Start difference. First operand has 1348 places, 1233 transitions, 32436 flow. Second operand 58 states and 1692 transitions. [2022-11-16 12:50:50,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1404 places, 1389 transitions, 37384 flow [2022-11-16 12:50:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1343 places, 1389 transitions, 35650 flow, removed 73 selfloop flow, removed 61 redundant places. [2022-11-16 12:50:53,869 INFO L231 Difference]: Finished difference. Result has 1343 places, 1232 transitions, 32318 flow [2022-11-16 12:50:53,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=30686, PETRI_DIFFERENCE_MINUEND_PLACES=1286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=816, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=32318, PETRI_PLACES=1343, PETRI_TRANSITIONS=1232} [2022-11-16 12:50:53,870 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1267 predicate places. [2022-11-16 12:50:53,870 INFO L495 AbstractCegarLoop]: Abstraction has has 1343 places, 1232 transitions, 32318 flow [2022-11-16 12:50:53,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:53,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:53,871 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:53,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-16 12:50:53,871 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:50:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:53,871 INFO L85 PathProgramCache]: Analyzing trace with hash 956608903, now seen corresponding path program 13 times [2022-11-16 12:50:53,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:53,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971035472] [2022-11-16 12:50:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:53,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:54,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:54,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971035472] [2022-11-16 12:50:54,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971035472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:54,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:54,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:50:54,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139151021] [2022-11-16 12:50:54,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:54,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:50:54,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:54,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:50:54,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:50:54,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:50:54,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1343 places, 1232 transitions, 32318 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:54,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:54,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:50:54,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:01,165 INFO L130 PetriNetUnfolder]: 887/3860 cut-off events. [2022-11-16 12:51:01,165 INFO L131 PetriNetUnfolder]: For 289735/289739 co-relation queries the response was YES. [2022-11-16 12:51:01,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43204 conditions, 3860 events. 887/3860 cut-off events. For 289735/289739 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 40568 event pairs, 150 based on Foata normal form. 3/3835 useless extension candidates. Maximal degree in co-relation 42790. Up to 1502 conditions per place. [2022-11-16 12:51:01,241 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 1113 selfloop transitions, 253 changer transitions 0/1391 dead transitions. [2022-11-16 12:51:01,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1376 places, 1391 transitions, 38161 flow [2022-11-16 12:51:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:51:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 12:51:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1059 transitions. [2022-11-16 12:51:01,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4266720386784851 [2022-11-16 12:51:01,243 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1059 transitions. [2022-11-16 12:51:01,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1059 transitions. [2022-11-16 12:51:01,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:01,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1059 transitions. [2022-11-16 12:51:01,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.147058823529413) internal successors, (1059), 34 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,245 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,246 INFO L175 Difference]: Start difference. First operand has 1343 places, 1232 transitions, 32318 flow. Second operand 34 states and 1059 transitions. [2022-11-16 12:51:01,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1376 places, 1391 transitions, 38161 flow [2022-11-16 12:51:04,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1320 places, 1391 transitions, 36303 flow, removed 12 selfloop flow, removed 56 redundant places. [2022-11-16 12:51:04,319 INFO L231 Difference]: Finished difference. Result has 1333 places, 1271 transitions, 32596 flow [2022-11-16 12:51:04,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=30537, PETRI_DIFFERENCE_MINUEND_PLACES=1287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1000, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=32596, PETRI_PLACES=1333, PETRI_TRANSITIONS=1271} [2022-11-16 12:51:04,320 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1257 predicate places. [2022-11-16 12:51:04,321 INFO L495 AbstractCegarLoop]: Abstraction has has 1333 places, 1271 transitions, 32596 flow [2022-11-16 12:51:04,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:04,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:04,321 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:04,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-16 12:51:04,321 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:51:04,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:04,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1160116575, now seen corresponding path program 14 times [2022-11-16 12:51:04,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:04,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571850024] [2022-11-16 12:51:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:04,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:05,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:05,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571850024] [2022-11-16 12:51:05,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571850024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:05,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:05,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-16 12:51:05,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414177508] [2022-11-16 12:51:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:05,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:51:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:51:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:51:05,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-16 12:51:05,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1333 places, 1271 transitions, 32596 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:05,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:05,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-16 12:51:05,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand