./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/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_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/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_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --- 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 12:41:27,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:41:27,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:41:27,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:41:27,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:41:27,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:41:27,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:41:27,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:41:27,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:41:27,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:41:27,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:41:27,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:41:27,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:41:27,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:41:27,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:41:27,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:41:27,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:41:27,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:41:27,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:41:27,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:41:27,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:41:27,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:41:27,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:41:27,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:41:27,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:41:27,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:41:27,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:41:27,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:41:27,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:41:27,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:41:27,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:41:27,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:41:27,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:41:27,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:41:27,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:41:27,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:41:27,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:41:27,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:41:27,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:41:27,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:41:27,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:41:27,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:41:27,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:41:27,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:41:27,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:41:27,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:41:27,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:41:27,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:41:27,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:41:27,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:41:27,459 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:41:27,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:41:27,460 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:41:27,461 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:41:27,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:41:27,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:41:27,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:41:27,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:41:27,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:41:27,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:41:27,462 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:41:27,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:41:27,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:41:27,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:41:27,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:41:27,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:41:27,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:41:27,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:41:27,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:27,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:41:27,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:41:27,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:41:27,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:41:27,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:41:27,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:41:27,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:41:27,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:41:27,468 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_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2022-11-16 12:41:27,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:41:27,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:41:27,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:41:27,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:41:27,824 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:41:27,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-11-16 12:41:27,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/data/d263d3c0d/1b519852ee8a4820992ba2983eb3c647/FLAG57d03dd16 [2022-11-16 12:41:28,392 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:41:28,393 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/sv-benchmarks/c/weaver/test-easy11.wvr.c [2022-11-16 12:41:28,400 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/data/d263d3c0d/1b519852ee8a4820992ba2983eb3c647/FLAG57d03dd16 [2022-11-16 12:41:28,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/data/d263d3c0d/1b519852ee8a4820992ba2983eb3c647 [2022-11-16 12:41:28,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:41:28,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:41:28,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:28,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:41:28,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:41:28,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:28" (1/1) ... [2022-11-16 12:41:28,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8e4609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:28, skipping insertion in model container [2022-11-16 12:41:28,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:28" (1/1) ... [2022-11-16 12:41:28,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:41:28,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:41:29,000 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-11-16 12:41:29,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:29,009 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:41:29,030 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2022-11-16 12:41:29,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:29,045 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:41:29,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29 WrapperNode [2022-11-16 12:41:29,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:29,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:29,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:41:29,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:41:29,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,080 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-16 12:41:29,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:29,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:41:29,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:41:29,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:41:29,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:41:29,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:41:29,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:41:29,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:41:29,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (1/1) ... [2022-11-16 12:41:29,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:29,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:29,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:41:29,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:41:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:41:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:41:29,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:41:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:41:29,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:41:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:41:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:41:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:41:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:41:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:41:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:41:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:41:29,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:41:29,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:41:29,210 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 12:41:29,340 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:41:29,343 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:41:29,595 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:41:29,623 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:41:29,623 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:41:29,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:29 BoogieIcfgContainer [2022-11-16 12:41:29,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:41:29,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:41:29,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:41:29,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:41:29,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:41:28" (1/3) ... [2022-11-16 12:41:29,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd99f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:29, skipping insertion in model container [2022-11-16 12:41:29,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:29" (2/3) ... [2022-11-16 12:41:29,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd99f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:29, skipping insertion in model container [2022-11-16 12:41:29,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:29" (3/3) ... [2022-11-16 12:41:29,656 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-11-16 12:41:29,666 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:41:29,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:41:29,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:41:29,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:41:29,791 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:41:29,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 212 flow [2022-11-16 12:41:29,894 INFO L130 PetriNetUnfolder]: 6/96 cut-off events. [2022-11-16 12:41:29,894 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:41:29,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 6/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2022-11-16 12:41:29,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 212 flow [2022-11-16 12:41:29,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 163 flow [2022-11-16 12:41:29,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:29,924 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;@251c7339, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:29,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 12:41:29,938 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-11-16 12:41:29,938 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:41:29,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:29,939 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] [2022-11-16 12:41:29,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:29,946 INFO L85 PathProgramCache]: Analyzing trace with hash -340817317, now seen corresponding path program 1 times [2022-11-16 12:41:29,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:29,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636890429] [2022-11-16 12:41:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,146 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 12:41:30,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:30,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636890429] [2022-11-16 12:41:30,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636890429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:30,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:30,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:41:30,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207270523] [2022-11-16 12:41:30,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:30,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:41:30,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:41:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:41:30,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 98 [2022-11-16 12:41:30,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 163 flow. Second operand has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:30,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:30,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 98 [2022-11-16 12:41:30,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:30,313 INFO L130 PetriNetUnfolder]: 10/100 cut-off events. [2022-11-16 12:41:30,313 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-16 12:41:30,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 100 events. 10/100 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 225 event pairs, 8 based on Foata normal form. 9/92 useless extension candidates. Maximal degree in co-relation 82. Up to 24 conditions per place. [2022-11-16 12:41:30,321 INFO L137 encePairwiseOnDemand]: 95/98 looper letters, 7 selfloop transitions, 0 changer transitions 1/74 dead transitions. [2022-11-16 12:41:30,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 171 flow [2022-11-16 12:41:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:41:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:41:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2022-11-16 12:41:30,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9183673469387755 [2022-11-16 12:41:30,341 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2022-11-16 12:41:30,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2022-11-16 12:41:30,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:30,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2022-11-16 12:41:30,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:30,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:30,368 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:30,370 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 163 flow. Second operand 2 states and 180 transitions. [2022-11-16 12:41:30,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 171 flow [2022-11-16 12:41:30,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:41:30,384 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 150 flow [2022-11-16 12:41:30,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2022-11-16 12:41:30,393 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2022-11-16 12:41:30,394 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 150 flow [2022-11-16 12:41:30,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:30,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:30,394 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] [2022-11-16 12:41:30,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:41:30,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:30,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:30,397 INFO L85 PathProgramCache]: Analyzing trace with hash -340817286, now seen corresponding path program 1 times [2022-11-16 12:41:30,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:30,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285171388] [2022-11-16 12:41:30,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:30,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,708 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 12:41:30,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:30,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285171388] [2022-11-16 12:41:30,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285171388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:30,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:30,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560841135] [2022-11-16 12:41:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:30,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:30,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:30,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:30,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:30,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:30,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:30,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:30,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:30,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:31,022 INFO L130 PetriNetUnfolder]: 75/278 cut-off events. [2022-11-16 12:41:31,023 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:41:31,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 278 events. 75/278 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1321 event pairs, 27 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 449. Up to 55 conditions per place. [2022-11-16 12:41:31,031 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 32 selfloop transitions, 12 changer transitions 2/96 dead transitions. [2022-11-16 12:41:31,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 292 flow [2022-11-16 12:41:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:41:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:41:31,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 523 transitions. [2022-11-16 12:41:31,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7623906705539358 [2022-11-16 12:41:31,042 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 523 transitions. [2022-11-16 12:41:31,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 523 transitions. [2022-11-16 12:41:31,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:31,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 523 transitions. [2022-11-16 12:41:31,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,051 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,051 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 150 flow. Second operand 7 states and 523 transitions. [2022-11-16 12:41:31,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 292 flow [2022-11-16 12:41:31,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:41:31,055 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 209 flow [2022-11-16 12:41:31,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=209, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2022-11-16 12:41:31,056 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2022-11-16 12:41:31,056 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 209 flow [2022-11-16 12:41:31,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:31,057 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] [2022-11-16 12:41:31,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:41:31,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:31,062 INFO L85 PathProgramCache]: Analyzing trace with hash -340817285, now seen corresponding path program 1 times [2022-11-16 12:41:31,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:31,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844419820] [2022-11-16 12:41:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:31,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:31,232 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 12:41:31,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:31,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844419820] [2022-11-16 12:41:31,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844419820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:31,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:31,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:31,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533266159] [2022-11-16 12:41:31,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:31,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:31,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:31,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:31,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:31,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-16 12:41:31,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:31,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-16 12:41:31,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:31,376 INFO L130 PetriNetUnfolder]: 48/194 cut-off events. [2022-11-16 12:41:31,376 INFO L131 PetriNetUnfolder]: For 46/51 co-relation queries the response was YES. [2022-11-16 12:41:31,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 194 events. 48/194 cut-off events. For 46/51 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 821 event pairs, 15 based on Foata normal form. 9/172 useless extension candidates. Maximal degree in co-relation 391. Up to 44 conditions per place. [2022-11-16 12:41:31,378 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 26 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2022-11-16 12:41:31,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 311 flow [2022-11-16 12:41:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:41:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:41:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2022-11-16 12:41:31,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8443877551020408 [2022-11-16 12:41:31,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2022-11-16 12:41:31,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2022-11-16 12:41:31,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:31,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2022-11-16 12:41:31,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,386 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,387 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 209 flow. Second operand 4 states and 331 transitions. [2022-11-16 12:41:31,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 311 flow [2022-11-16 12:41:31,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:31,393 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 231 flow [2022-11-16 12:41:31,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2022-11-16 12:41:31,395 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2022-11-16 12:41:31,395 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 231 flow [2022-11-16 12:41:31,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:31,396 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] [2022-11-16 12:41:31,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:41:31,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:31,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:31,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1975399980, now seen corresponding path program 1 times [2022-11-16 12:41:31,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:31,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539889099] [2022-11-16 12:41:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:31,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:31,470 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 12:41:31,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:31,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539889099] [2022-11-16 12:41:31,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539889099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:31,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:31,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:31,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629453522] [2022-11-16 12:41:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:31,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:31,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:31,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:31,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:31,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-11-16 12:41:31,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:31,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-11-16 12:41:31,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:31,574 INFO L130 PetriNetUnfolder]: 49/202 cut-off events. [2022-11-16 12:41:31,574 INFO L131 PetriNetUnfolder]: For 67/84 co-relation queries the response was YES. [2022-11-16 12:41:31,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 202 events. 49/202 cut-off events. For 67/84 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 920 event pairs, 21 based on Foata normal form. 3/178 useless extension candidates. Maximal degree in co-relation 435. Up to 58 conditions per place. [2022-11-16 12:41:31,577 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 29 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2022-11-16 12:41:31,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 338 flow [2022-11-16 12:41:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:41:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2022-11-16 12:41:31,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8020408163265306 [2022-11-16 12:41:31,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2022-11-16 12:41:31,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2022-11-16 12:41:31,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:31,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2022-11-16 12:41:31,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,589 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 231 flow. Second operand 5 states and 393 transitions. [2022-11-16 12:41:31,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 338 flow [2022-11-16 12:41:31,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:31,594 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 234 flow [2022-11-16 12:41:31,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2022-11-16 12:41:31,598 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2022-11-16 12:41:31,598 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 234 flow [2022-11-16 12:41:31,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:31,599 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] [2022-11-16 12:41:31,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:41:31,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1107856962, now seen corresponding path program 1 times [2022-11-16 12:41:31,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:31,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143879807] [2022-11-16 12:41:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:31,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:31,769 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 12:41:31,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:31,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143879807] [2022-11-16 12:41:31,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143879807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:31,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:31,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:31,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179492596] [2022-11-16 12:41:31,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:31,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:31,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:31,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:31,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:31,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 98 [2022-11-16 12:41:31,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:31,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 98 [2022-11-16 12:41:31,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:31,933 INFO L130 PetriNetUnfolder]: 60/207 cut-off events. [2022-11-16 12:41:31,934 INFO L131 PetriNetUnfolder]: For 85/88 co-relation queries the response was YES. [2022-11-16 12:41:31,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 207 events. 60/207 cut-off events. For 85/88 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 928 event pairs, 25 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 485. Up to 74 conditions per place. [2022-11-16 12:41:31,936 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 34 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2022-11-16 12:41:31,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 348 flow [2022-11-16 12:41:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:31,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:41:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2022-11-16 12:41:31,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7295918367346939 [2022-11-16 12:41:31,938 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 429 transitions. [2022-11-16 12:41:31,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 429 transitions. [2022-11-16 12:41:31,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:31,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 429 transitions. [2022-11-16 12:41:31,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,943 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,943 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 234 flow. Second operand 6 states and 429 transitions. [2022-11-16 12:41:31,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 348 flow [2022-11-16 12:41:31,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:31,964 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 234 flow [2022-11-16 12:41:31,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2022-11-16 12:41:31,968 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2022-11-16 12:41:31,968 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 234 flow [2022-11-16 12:41:31,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:31,969 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] [2022-11-16 12:41:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:41:31,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:31,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash 866190475, now seen corresponding path program 1 times [2022-11-16 12:41:31,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:31,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930533384] [2022-11-16 12:41:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:32,151 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 12:41:32,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:32,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930533384] [2022-11-16 12:41:32,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930533384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:32,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:32,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135812743] [2022-11-16 12:41:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:32,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:32,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:32,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:32,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:32,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:32,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:32,300 INFO L130 PetriNetUnfolder]: 72/225 cut-off events. [2022-11-16 12:41:32,300 INFO L131 PetriNetUnfolder]: For 173/220 co-relation queries the response was YES. [2022-11-16 12:41:32,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 225 events. 72/225 cut-off events. For 173/220 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 915 event pairs, 18 based on Foata normal form. 11/200 useless extension candidates. Maximal degree in co-relation 513. Up to 65 conditions per place. [2022-11-16 12:41:32,305 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 29 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2022-11-16 12:41:32,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 410 flow [2022-11-16 12:41:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:41:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:41:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2022-11-16 12:41:32,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2022-11-16 12:41:32,307 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2022-11-16 12:41:32,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2022-11-16 12:41:32,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:32,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2022-11-16 12:41:32,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,312 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,313 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 234 flow. Second operand 7 states and 518 transitions. [2022-11-16 12:41:32,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 410 flow [2022-11-16 12:41:32,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 394 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:41:32,320 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 335 flow [2022-11-16 12:41:32,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2022-11-16 12:41:32,324 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2022-11-16 12:41:32,324 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 335 flow [2022-11-16 12:41:32,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:32,325 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] [2022-11-16 12:41:32,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:41:32,327 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash 866190476, now seen corresponding path program 1 times [2022-11-16 12:41:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:32,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297420826] [2022-11-16 12:41:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:32,426 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 12:41:32,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:32,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297420826] [2022-11-16 12:41:32,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297420826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:32,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:32,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:32,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846016646] [2022-11-16 12:41:32,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:32,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:32,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:32,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:32,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2022-11-16 12:41:32,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:32,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2022-11-16 12:41:32,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:32,512 INFO L130 PetriNetUnfolder]: 56/194 cut-off events. [2022-11-16 12:41:32,513 INFO L131 PetriNetUnfolder]: For 233/329 co-relation queries the response was YES. [2022-11-16 12:41:32,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 194 events. 56/194 cut-off events. For 233/329 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 756 event pairs, 13 based on Foata normal form. 28/204 useless extension candidates. Maximal degree in co-relation 489. Up to 65 conditions per place. [2022-11-16 12:41:32,515 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 23 selfloop transitions, 18 changer transitions 0/100 dead transitions. [2022-11-16 12:41:32,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 473 flow [2022-11-16 12:41:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:41:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:41:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 328 transitions. [2022-11-16 12:41:32,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2022-11-16 12:41:32,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 328 transitions. [2022-11-16 12:41:32,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 328 transitions. [2022-11-16 12:41:32,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:32,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 328 transitions. [2022-11-16 12:41:32,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,521 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 98.0) internal successors, (490), 5 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,521 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 335 flow. Second operand 4 states and 328 transitions. [2022-11-16 12:41:32,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 473 flow [2022-11-16 12:41:32,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 100 transitions, 450 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:32,526 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 403 flow [2022-11-16 12:41:32,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=403, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2022-11-16 12:41:32,528 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-11-16 12:41:32,528 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 403 flow [2022-11-16 12:41:32,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:32,529 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] [2022-11-16 12:41:32,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:41:32,530 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:32,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:32,530 INFO L85 PathProgramCache]: Analyzing trace with hash 768446914, now seen corresponding path program 1 times [2022-11-16 12:41:32,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:32,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613222353] [2022-11-16 12:41:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:32,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:32,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:32,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613222353] [2022-11-16 12:41:32,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613222353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:32,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:32,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:32,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55980841] [2022-11-16 12:41:32,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:32,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:32,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:32,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2022-11-16 12:41:32,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:32,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2022-11-16 12:41:32,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:32,826 INFO L130 PetriNetUnfolder]: 64/228 cut-off events. [2022-11-16 12:41:32,827 INFO L131 PetriNetUnfolder]: For 332/432 co-relation queries the response was YES. [2022-11-16 12:41:32,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 228 events. 64/228 cut-off events. For 332/432 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 958 event pairs, 13 based on Foata normal form. 35/240 useless extension candidates. Maximal degree in co-relation 643. Up to 56 conditions per place. [2022-11-16 12:41:32,830 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 32 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2022-11-16 12:41:32,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 118 transitions, 675 flow [2022-11-16 12:41:32,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:41:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:41:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2022-11-16 12:41:32,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813411078717201 [2022-11-16 12:41:32,833 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2022-11-16 12:41:32,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2022-11-16 12:41:32,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:32,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2022-11-16 12:41:32,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,843 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 403 flow. Second operand 7 states and 536 transitions. [2022-11-16 12:41:32,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 118 transitions, 675 flow [2022-11-16 12:41:32,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 118 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:32,847 INFO L231 Difference]: Finished difference. Result has 100 places, 104 transitions, 573 flow [2022-11-16 12:41:32,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=100, PETRI_TRANSITIONS=104} [2022-11-16 12:41:32,850 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2022-11-16 12:41:32,850 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 104 transitions, 573 flow [2022-11-16 12:41:32,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:32,851 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] [2022-11-16 12:41:32,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:41:32,852 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:32,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:32,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1082102260, now seen corresponding path program 1 times [2022-11-16 12:41:32,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:32,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582677687] [2022-11-16 12:41:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:32,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:32,924 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 12:41:32,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:32,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582677687] [2022-11-16 12:41:32,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582677687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:32,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:32,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:32,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229783608] [2022-11-16 12:41:32,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:32,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:32,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:32,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-11-16 12:41:32,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 104 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:32,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-11-16 12:41:32,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:33,013 INFO L130 PetriNetUnfolder]: 58/169 cut-off events. [2022-11-16 12:41:33,014 INFO L131 PetriNetUnfolder]: For 561/683 co-relation queries the response was YES. [2022-11-16 12:41:33,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 169 events. 58/169 cut-off events. For 561/683 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 567 event pairs, 7 based on Foata normal form. 23/185 useless extension candidates. Maximal degree in co-relation 595. Up to 61 conditions per place. [2022-11-16 12:41:33,017 INFO L137 encePairwiseOnDemand]: 93/98 looper letters, 47 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2022-11-16 12:41:33,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 764 flow [2022-11-16 12:41:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:41:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2022-11-16 12:41:33,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2022-11-16 12:41:33,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2022-11-16 12:41:33,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2022-11-16 12:41:33,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:33,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2022-11-16 12:41:33,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,025 INFO L175 Difference]: Start difference. First operand has 100 places, 104 transitions, 573 flow. Second operand 5 states and 390 transitions. [2022-11-16 12:41:33,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 764 flow [2022-11-16 12:41:33,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 733 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:33,031 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 558 flow [2022-11-16 12:41:33,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2022-11-16 12:41:33,033 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2022-11-16 12:41:33,033 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 558 flow [2022-11-16 12:41:33,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:33,034 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] [2022-11-16 12:41:33,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:41:33,034 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:33,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash -814568017, now seen corresponding path program 1 times [2022-11-16 12:41:33,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:33,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835934212] [2022-11-16 12:41:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:33,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:33,127 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 12:41:33,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:33,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835934212] [2022-11-16 12:41:33,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835934212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:33,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:33,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:33,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709292479] [2022-11-16 12:41:33,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:33,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:33,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:33,139 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 98 [2022-11-16 12:41:33,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:33,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 98 [2022-11-16 12:41:33,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:33,266 INFO L130 PetriNetUnfolder]: 69/197 cut-off events. [2022-11-16 12:41:33,267 INFO L131 PetriNetUnfolder]: For 597/699 co-relation queries the response was YES. [2022-11-16 12:41:33,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 197 events. 69/197 cut-off events. For 597/699 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 700 event pairs, 5 based on Foata normal form. 36/226 useless extension candidates. Maximal degree in co-relation 670. Up to 67 conditions per place. [2022-11-16 12:41:33,269 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 54 selfloop transitions, 7 changer transitions 0/112 dead transitions. [2022-11-16 12:41:33,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 768 flow [2022-11-16 12:41:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:41:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 427 transitions. [2022-11-16 12:41:33,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2022-11-16 12:41:33,272 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 427 transitions. [2022-11-16 12:41:33,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 427 transitions. [2022-11-16 12:41:33,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:33,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 427 transitions. [2022-11-16 12:41:33,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,277 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,277 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 558 flow. Second operand 6 states and 427 transitions. [2022-11-16 12:41:33,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 768 flow [2022-11-16 12:41:33,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 756 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:33,282 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 558 flow [2022-11-16 12:41:33,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2022-11-16 12:41:33,284 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2022-11-16 12:41:33,285 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 558 flow [2022-11-16 12:41:33,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:33,285 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] [2022-11-16 12:41:33,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:41:33,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:33,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:33,286 INFO L85 PathProgramCache]: Analyzing trace with hash 881206193, now seen corresponding path program 1 times [2022-11-16 12:41:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:33,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823646571] [2022-11-16 12:41:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:33,404 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 12:41:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:33,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823646571] [2022-11-16 12:41:33,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823646571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:33,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:33,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259637691] [2022-11-16 12:41:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:33,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:33,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:33,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:33,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-16 12:41:33,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:33,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-16 12:41:33,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:33,560 INFO L130 PetriNetUnfolder]: 131/337 cut-off events. [2022-11-16 12:41:33,560 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2022-11-16 12:41:33,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 337 events. 131/337 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1412 event pairs, 44 based on Foata normal form. 2/330 useless extension candidates. Maximal degree in co-relation 1130. Up to 110 conditions per place. [2022-11-16 12:41:33,564 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 47 selfloop transitions, 33 changer transitions 0/128 dead transitions. [2022-11-16 12:41:33,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 859 flow [2022-11-16 12:41:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-11-16 12:41:33,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7742346938775511 [2022-11-16 12:41:33,567 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-11-16 12:41:33,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-11-16 12:41:33,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:33,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-11-16 12:41:33,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,572 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,572 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 558 flow. Second operand 8 states and 607 transitions. [2022-11-16 12:41:33,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 859 flow [2022-11-16 12:41:33,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 128 transitions, 839 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:41:33,578 INFO L231 Difference]: Finished difference. Result has 105 places, 108 transitions, 660 flow [2022-11-16 12:41:33,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=660, PETRI_PLACES=105, PETRI_TRANSITIONS=108} [2022-11-16 12:41:33,579 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 26 predicate places. [2022-11-16 12:41:33,579 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 108 transitions, 660 flow [2022-11-16 12:41:33,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:33,580 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] [2022-11-16 12:41:33,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:41:33,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:33,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1292247592, now seen corresponding path program 1 times [2022-11-16 12:41:33,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:33,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479781647] [2022-11-16 12:41:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:33,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:33,838 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 12:41:33,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:33,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479781647] [2022-11-16 12:41:33,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479781647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:33,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:33,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:41:33,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298367538] [2022-11-16 12:41:33,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:33,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:41:33,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:33,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:41:33,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:41:33,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-16 12:41:33,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 108 transitions, 660 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:33,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:33,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-16 12:41:33,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:34,227 INFO L130 PetriNetUnfolder]: 158/416 cut-off events. [2022-11-16 12:41:34,227 INFO L131 PetriNetUnfolder]: For 1216/1218 co-relation queries the response was YES. [2022-11-16 12:41:34,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 416 events. 158/416 cut-off events. For 1216/1218 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1998 event pairs, 31 based on Foata normal form. 6/409 useless extension candidates. Maximal degree in co-relation 1433. Up to 80 conditions per place. [2022-11-16 12:41:34,232 INFO L137 encePairwiseOnDemand]: 84/98 looper letters, 60 selfloop transitions, 52 changer transitions 1/155 dead transitions. [2022-11-16 12:41:34,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 155 transitions, 1191 flow [2022-11-16 12:41:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:41:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:41:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 725 transitions. [2022-11-16 12:41:34,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6725417439703154 [2022-11-16 12:41:34,235 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 725 transitions. [2022-11-16 12:41:34,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 725 transitions. [2022-11-16 12:41:34,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:34,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 725 transitions. [2022-11-16 12:41:34,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.9090909090909) internal successors, (725), 11 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,240 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,241 INFO L175 Difference]: Start difference. First operand has 105 places, 108 transitions, 660 flow. Second operand 11 states and 725 transitions. [2022-11-16 12:41:34,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 155 transitions, 1191 flow [2022-11-16 12:41:34,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 155 transitions, 1106 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:34,249 INFO L231 Difference]: Finished difference. Result has 113 places, 124 transitions, 893 flow [2022-11-16 12:41:34,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=113, PETRI_TRANSITIONS=124} [2022-11-16 12:41:34,250 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2022-11-16 12:41:34,250 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 124 transitions, 893 flow [2022-11-16 12:41:34,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:34,251 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] [2022-11-16 12:41:34,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:41:34,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1657652532, now seen corresponding path program 2 times [2022-11-16 12:41:34,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:34,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289398261] [2022-11-16 12:41:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:34,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:34,416 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 12:41:34,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:34,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289398261] [2022-11-16 12:41:34,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289398261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:34,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:34,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:41:34,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374374345] [2022-11-16 12:41:34,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:34,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:41:34,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:41:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:41:34,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-16 12:41:34,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 124 transitions, 893 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:34,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-16 12:41:34,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:34,743 INFO L130 PetriNetUnfolder]: 181/493 cut-off events. [2022-11-16 12:41:34,743 INFO L131 PetriNetUnfolder]: For 1879/1891 co-relation queries the response was YES. [2022-11-16 12:41:34,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1708 conditions, 493 events. 181/493 cut-off events. For 1879/1891 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2598 event pairs, 42 based on Foata normal form. 10/488 useless extension candidates. Maximal degree in co-relation 1691. Up to 101 conditions per place. [2022-11-16 12:41:34,748 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 56 selfloop transitions, 52 changer transitions 1/151 dead transitions. [2022-11-16 12:41:34,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 151 transitions, 1276 flow [2022-11-16 12:41:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:41:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:41:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 591 transitions. [2022-11-16 12:41:34,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2022-11-16 12:41:34,752 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 591 transitions. [2022-11-16 12:41:34,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 591 transitions. [2022-11-16 12:41:34,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:34,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 591 transitions. [2022-11-16 12:41:34,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.66666666666667) internal successors, (591), 9 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,757 INFO L175 Difference]: Start difference. First operand has 113 places, 124 transitions, 893 flow. Second operand 9 states and 591 transitions. [2022-11-16 12:41:34,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 151 transitions, 1276 flow [2022-11-16 12:41:34,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 151 transitions, 1160 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-16 12:41:34,769 INFO L231 Difference]: Finished difference. Result has 117 places, 131 transitions, 1023 flow [2022-11-16 12:41:34,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=117, PETRI_TRANSITIONS=131} [2022-11-16 12:41:34,770 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2022-11-16 12:41:34,770 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 131 transitions, 1023 flow [2022-11-16 12:41:34,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:34,771 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] [2022-11-16 12:41:34,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:41:34,771 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1657652531, now seen corresponding path program 2 times [2022-11-16 12:41:34,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:34,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357776926] [2022-11-16 12:41:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:34,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:34,858 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 12:41:34,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:34,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357776926] [2022-11-16 12:41:34,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357776926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:34,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:34,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107716866] [2022-11-16 12:41:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:34,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:34,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:34,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-16 12:41:34,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 131 transitions, 1023 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:34,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:34,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-16 12:41:34,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:35,083 INFO L130 PetriNetUnfolder]: 184/520 cut-off events. [2022-11-16 12:41:35,084 INFO L131 PetriNetUnfolder]: For 2185/2197 co-relation queries the response was YES. [2022-11-16 12:41:35,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 520 events. 184/520 cut-off events. For 2185/2197 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2809 event pairs, 55 based on Foata normal form. 14/519 useless extension candidates. Maximal degree in co-relation 1883. Up to 158 conditions per place. [2022-11-16 12:41:35,089 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 65 selfloop transitions, 54 changer transitions 2/169 dead transitions. [2022-11-16 12:41:35,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 169 transitions, 1639 flow [2022-11-16 12:41:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-11-16 12:41:35,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-11-16 12:41:35,092 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-11-16 12:41:35,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-11-16 12:41:35,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:35,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-11-16 12:41:35,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 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 12:41:35,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,096 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,096 INFO L175 Difference]: Start difference. First operand has 117 places, 131 transitions, 1023 flow. Second operand 8 states and 609 transitions. [2022-11-16 12:41:35,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 169 transitions, 1639 flow [2022-11-16 12:41:35,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 169 transitions, 1558 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-16 12:41:35,112 INFO L231 Difference]: Finished difference. Result has 122 places, 144 transitions, 1334 flow [2022-11-16 12:41:35,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1334, PETRI_PLACES=122, PETRI_TRANSITIONS=144} [2022-11-16 12:41:35,113 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 43 predicate places. [2022-11-16 12:41:35,113 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 144 transitions, 1334 flow [2022-11-16 12:41:35,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:35,114 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] [2022-11-16 12:41:35,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:41:35,114 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1675123511, now seen corresponding path program 3 times [2022-11-16 12:41:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:35,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598889683] [2022-11-16 12:41:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:35,196 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 12:41:35,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:35,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598889683] [2022-11-16 12:41:35,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598889683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:35,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:35,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:35,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330281925] [2022-11-16 12:41:35,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:35,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:35,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:35,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-16 12:41:35,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 144 transitions, 1334 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:35,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-16 12:41:35,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:35,417 INFO L130 PetriNetUnfolder]: 181/521 cut-off events. [2022-11-16 12:41:35,417 INFO L131 PetriNetUnfolder]: For 2689/2712 co-relation queries the response was YES. [2022-11-16 12:41:35,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1961 conditions, 521 events. 181/521 cut-off events. For 2689/2712 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2822 event pairs, 50 based on Foata normal form. 21/530 useless extension candidates. Maximal degree in co-relation 1939. Up to 154 conditions per place. [2022-11-16 12:41:35,422 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 63 selfloop transitions, 53 changer transitions 2/166 dead transitions. [2022-11-16 12:41:35,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 166 transitions, 1659 flow [2022-11-16 12:41:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:35,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2022-11-16 12:41:35,425 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-11-16 12:41:35,425 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2022-11-16 12:41:35,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2022-11-16 12:41:35,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:35,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2022-11-16 12:41:35,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 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 12:41:35,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,429 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,429 INFO L175 Difference]: Start difference. First operand has 122 places, 144 transitions, 1334 flow. Second operand 8 states and 609 transitions. [2022-11-16 12:41:35,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 166 transitions, 1659 flow [2022-11-16 12:41:35,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 166 transitions, 1382 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-16 12:41:35,445 INFO L231 Difference]: Finished difference. Result has 121 places, 140 transitions, 1111 flow [2022-11-16 12:41:35,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1111, PETRI_PLACES=121, PETRI_TRANSITIONS=140} [2022-11-16 12:41:35,445 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 42 predicate places. [2022-11-16 12:41:35,446 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 140 transitions, 1111 flow [2022-11-16 12:41:35,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:35,446 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] [2022-11-16 12:41:35,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:41:35,447 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:35,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1771894146, now seen corresponding path program 3 times [2022-11-16 12:41:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:35,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016558382] [2022-11-16 12:41:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:35,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:35,604 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 12:41:35,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016558382] [2022-11-16 12:41:35,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016558382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:35,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:35,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:41:35,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327060860] [2022-11-16 12:41:35,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:35,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:41:35,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:41:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:41:35,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-16 12:41:35,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 140 transitions, 1111 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:35,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-16 12:41:35,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:35,921 INFO L130 PetriNetUnfolder]: 193/584 cut-off events. [2022-11-16 12:41:35,921 INFO L131 PetriNetUnfolder]: For 1822/1850 co-relation queries the response was YES. [2022-11-16 12:41:35,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 584 events. 193/584 cut-off events. For 1822/1850 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3291 event pairs, 28 based on Foata normal form. 26/597 useless extension candidates. Maximal degree in co-relation 2092. Up to 86 conditions per place. [2022-11-16 12:41:35,928 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 76 selfloop transitions, 65 changer transitions 1/184 dead transitions. [2022-11-16 12:41:35,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 184 transitions, 1681 flow [2022-11-16 12:41:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:41:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:41:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 722 transitions. [2022-11-16 12:41:35,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6697588126159555 [2022-11-16 12:41:35,932 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 722 transitions. [2022-11-16 12:41:35,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 722 transitions. [2022-11-16 12:41:35,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:35,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 722 transitions. [2022-11-16 12:41:35,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,940 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,942 INFO L175 Difference]: Start difference. First operand has 121 places, 140 transitions, 1111 flow. Second operand 11 states and 722 transitions. [2022-11-16 12:41:35,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 184 transitions, 1681 flow [2022-11-16 12:41:35,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 184 transitions, 1605 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:35,960 INFO L231 Difference]: Finished difference. Result has 129 places, 142 transitions, 1215 flow [2022-11-16 12:41:35,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1215, PETRI_PLACES=129, PETRI_TRANSITIONS=142} [2022-11-16 12:41:35,961 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 50 predicate places. [2022-11-16 12:41:35,963 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 142 transitions, 1215 flow [2022-11-16 12:41:35,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:35,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:35,964 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] [2022-11-16 12:41:35,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:41:35,965 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:35,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1580034405, now seen corresponding path program 1 times [2022-11-16 12:41:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:35,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891495949] [2022-11-16 12:41:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:36,040 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 12:41:36,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:36,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891495949] [2022-11-16 12:41:36,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891495949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:36,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:36,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623695000] [2022-11-16 12:41:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:36,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:36,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:36,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-16 12:41:36,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 142 transitions, 1215 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:36,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-16 12:41:36,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:36,237 INFO L130 PetriNetUnfolder]: 193/587 cut-off events. [2022-11-16 12:41:36,237 INFO L131 PetriNetUnfolder]: For 2199/2234 co-relation queries the response was YES. [2022-11-16 12:41:36,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 587 events. 193/587 cut-off events. For 2199/2234 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3370 event pairs, 64 based on Foata normal form. 25/598 useless extension candidates. Maximal degree in co-relation 2223. Up to 166 conditions per place. [2022-11-16 12:41:36,243 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 62 selfloop transitions, 52 changer transitions 0/162 dead transitions. [2022-11-16 12:41:36,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 162 transitions, 1579 flow [2022-11-16 12:41:36,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:41:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2022-11-16 12:41:36,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7874149659863946 [2022-11-16 12:41:36,246 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2022-11-16 12:41:36,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2022-11-16 12:41:36,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:36,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2022-11-16 12:41:36,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,254 INFO L175 Difference]: Start difference. First operand has 129 places, 142 transitions, 1215 flow. Second operand 6 states and 463 transitions. [2022-11-16 12:41:36,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 162 transitions, 1579 flow [2022-11-16 12:41:36,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 162 transitions, 1436 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-16 12:41:36,265 INFO L231 Difference]: Finished difference. Result has 128 places, 145 transitions, 1281 flow [2022-11-16 12:41:36,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1281, PETRI_PLACES=128, PETRI_TRANSITIONS=145} [2022-11-16 12:41:36,267 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 49 predicate places. [2022-11-16 12:41:36,267 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 145 transitions, 1281 flow [2022-11-16 12:41:36,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:36,268 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] [2022-11-16 12:41:36,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:41:36,268 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:36,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1292267632, now seen corresponding path program 1 times [2022-11-16 12:41:36,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:36,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018957377] [2022-11-16 12:41:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:36,461 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 12:41:36,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:36,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018957377] [2022-11-16 12:41:36,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018957377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:36,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:36,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:41:36,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336261971] [2022-11-16 12:41:36,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:36,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:41:36,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:41:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:41:36,465 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-16 12:41:36,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 145 transitions, 1281 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:36,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-16 12:41:36,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:36,765 INFO L130 PetriNetUnfolder]: 193/603 cut-off events. [2022-11-16 12:41:36,765 INFO L131 PetriNetUnfolder]: For 2222/2252 co-relation queries the response was YES. [2022-11-16 12:41:36,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 603 events. 193/603 cut-off events. For 2222/2252 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3562 event pairs, 34 based on Foata normal form. 28/618 useless extension candidates. Maximal degree in co-relation 2234. Up to 165 conditions per place. [2022-11-16 12:41:36,772 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 71 selfloop transitions, 60 changer transitions 2/175 dead transitions. [2022-11-16 12:41:36,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 175 transitions, 1737 flow [2022-11-16 12:41:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:41:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:41:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 591 transitions. [2022-11-16 12:41:36,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2022-11-16 12:41:36,775 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 591 transitions. [2022-11-16 12:41:36,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 591 transitions. [2022-11-16 12:41:36,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:36,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 591 transitions. [2022-11-16 12:41:36,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.66666666666667) internal successors, (591), 9 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,799 INFO L175 Difference]: Start difference. First operand has 128 places, 145 transitions, 1281 flow. Second operand 9 states and 591 transitions. [2022-11-16 12:41:36,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 175 transitions, 1737 flow [2022-11-16 12:41:36,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 175 transitions, 1709 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:36,812 INFO L231 Difference]: Finished difference. Result has 137 places, 146 transitions, 1430 flow [2022-11-16 12:41:36,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=137, PETRI_TRANSITIONS=146} [2022-11-16 12:41:36,813 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 58 predicate places. [2022-11-16 12:41:36,813 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 146 transitions, 1430 flow [2022-11-16 12:41:36,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:36,814 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] [2022-11-16 12:41:36,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:41:36,814 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:36,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:36,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1657632491, now seen corresponding path program 2 times [2022-11-16 12:41:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:36,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875958391] [2022-11-16 12:41:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:36,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:36,883 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 12:41:36,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:36,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875958391] [2022-11-16 12:41:36,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875958391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:36,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:36,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:36,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282136865] [2022-11-16 12:41:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:36,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:36,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-16 12:41:36,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 146 transitions, 1430 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:36,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-16 12:41:36,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:37,049 INFO L130 PetriNetUnfolder]: 192/599 cut-off events. [2022-11-16 12:41:37,049 INFO L131 PetriNetUnfolder]: For 2979/2999 co-relation queries the response was YES. [2022-11-16 12:41:37,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 599 events. 192/599 cut-off events. For 2979/2999 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3501 event pairs, 58 based on Foata normal form. 18/602 useless extension candidates. Maximal degree in co-relation 2336. Up to 158 conditions per place. [2022-11-16 12:41:37,056 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 65 selfloop transitions, 50 changer transitions 0/163 dead transitions. [2022-11-16 12:41:37,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 163 transitions, 1791 flow [2022-11-16 12:41:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:41:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 458 transitions. [2022-11-16 12:41:37,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7789115646258503 [2022-11-16 12:41:37,058 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 458 transitions. [2022-11-16 12:41:37,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 458 transitions. [2022-11-16 12:41:37,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:37,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 458 transitions. [2022-11-16 12:41:37,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,062 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,062 INFO L175 Difference]: Start difference. First operand has 137 places, 146 transitions, 1430 flow. Second operand 6 states and 458 transitions. [2022-11-16 12:41:37,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 163 transitions, 1791 flow [2022-11-16 12:41:37,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 163 transitions, 1696 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-16 12:41:37,079 INFO L231 Difference]: Finished difference. Result has 138 places, 147 transitions, 1499 flow [2022-11-16 12:41:37,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1499, PETRI_PLACES=138, PETRI_TRANSITIONS=147} [2022-11-16 12:41:37,080 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 59 predicate places. [2022-11-16 12:41:37,080 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 147 transitions, 1499 flow [2022-11-16 12:41:37,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:37,081 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] [2022-11-16 12:41:37,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:41:37,081 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:37,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1674632891, now seen corresponding path program 3 times [2022-11-16 12:41:37,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:37,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515283597] [2022-11-16 12:41:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:37,157 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 12:41:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:37,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515283597] [2022-11-16 12:41:37,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515283597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:37,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:37,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:37,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149403804] [2022-11-16 12:41:37,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:37,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:37,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:37,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2022-11-16 12:41:37,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 147 transitions, 1499 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:37,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2022-11-16 12:41:37,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:37,348 INFO L130 PetriNetUnfolder]: 191/597 cut-off events. [2022-11-16 12:41:37,348 INFO L131 PetriNetUnfolder]: For 2888/2908 co-relation queries the response was YES. [2022-11-16 12:41:37,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 597 events. 191/597 cut-off events. For 2888/2908 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3484 event pairs, 58 based on Foata normal form. 18/600 useless extension candidates. Maximal degree in co-relation 2362. Up to 164 conditions per place. [2022-11-16 12:41:37,355 INFO L137 encePairwiseOnDemand]: 91/98 looper letters, 62 selfloop transitions, 50 changer transitions 1/161 dead transitions. [2022-11-16 12:41:37,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 161 transitions, 1808 flow [2022-11-16 12:41:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:41:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 460 transitions. [2022-11-16 12:41:37,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.782312925170068 [2022-11-16 12:41:37,357 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 460 transitions. [2022-11-16 12:41:37,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 460 transitions. [2022-11-16 12:41:37,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:37,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 460 transitions. [2022-11-16 12:41:37,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,360 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,360 INFO L175 Difference]: Start difference. First operand has 138 places, 147 transitions, 1499 flow. Second operand 6 states and 460 transitions. [2022-11-16 12:41:37,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 161 transitions, 1808 flow [2022-11-16 12:41:37,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 161 transitions, 1554 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-16 12:41:37,376 INFO L231 Difference]: Finished difference. Result has 132 places, 144 transitions, 1305 flow [2022-11-16 12:41:37,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1305, PETRI_PLACES=132, PETRI_TRANSITIONS=144} [2022-11-16 12:41:37,377 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 53 predicate places. [2022-11-16 12:41:37,377 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 144 transitions, 1305 flow [2022-11-16 12:41:37,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:37,378 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] [2022-11-16 12:41:37,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:41:37,379 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1674632892, now seen corresponding path program 2 times [2022-11-16 12:41:37,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:37,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197680886] [2022-11-16 12:41:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:37,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:37,576 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 12:41:37,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:37,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197680886] [2022-11-16 12:41:37,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197680886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:37,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:37,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:41:37,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432712215] [2022-11-16 12:41:37,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:37,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:41:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:41:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:41:37,581 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-16 12:41:37,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 144 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:37,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-16 12:41:37,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:37,926 INFO L130 PetriNetUnfolder]: 189/608 cut-off events. [2022-11-16 12:41:37,926 INFO L131 PetriNetUnfolder]: For 2165/2195 co-relation queries the response was YES. [2022-11-16 12:41:37,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 608 events. 189/608 cut-off events. For 2165/2195 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3638 event pairs, 25 based on Foata normal form. 29/624 useless extension candidates. Maximal degree in co-relation 2241. Up to 168 conditions per place. [2022-11-16 12:41:37,932 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 73 selfloop transitions, 62 changer transitions 7/184 dead transitions. [2022-11-16 12:41:37,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 184 transitions, 1868 flow [2022-11-16 12:41:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:41:37,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:41:37,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 721 transitions. [2022-11-16 12:41:37,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6688311688311688 [2022-11-16 12:41:37,934 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 721 transitions. [2022-11-16 12:41:37,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 721 transitions. [2022-11-16 12:41:37,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:37,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 721 transitions. [2022-11-16 12:41:37,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.54545454545455) internal successors, (721), 11 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 12:41:37,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,939 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,939 INFO L175 Difference]: Start difference. First operand has 132 places, 144 transitions, 1305 flow. Second operand 11 states and 721 transitions. [2022-11-16 12:41:37,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 184 transitions, 1868 flow [2022-11-16 12:41:37,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 184 transitions, 1790 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:41:37,952 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 1356 flow [2022-11-16 12:41:37,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1356, PETRI_PLACES=140, PETRI_TRANSITIONS=143} [2022-11-16 12:41:37,953 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 61 predicate places. [2022-11-16 12:41:37,954 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 1356 flow [2022-11-16 12:41:37,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:37,954 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] [2022-11-16 12:41:37,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:41:37,955 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:37,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1656969402, now seen corresponding path program 3 times [2022-11-16 12:41:37,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:37,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180233418] [2022-11-16 12:41:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:37,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:38,138 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 12:41:38,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:38,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180233418] [2022-11-16 12:41:38,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180233418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:38,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:38,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:41:38,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239071094] [2022-11-16 12:41:38,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:38,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:41:38,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:41:38,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:41:38,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 98 [2022-11-16 12:41:38,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 1356 flow. Second operand has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:38,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 98 [2022-11-16 12:41:38,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:38,467 INFO L130 PetriNetUnfolder]: 189/635 cut-off events. [2022-11-16 12:41:38,467 INFO L131 PetriNetUnfolder]: For 2480/2510 co-relation queries the response was YES. [2022-11-16 12:41:38,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 635 events. 189/635 cut-off events. For 2480/2510 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3928 event pairs, 32 based on Foata normal form. 29/650 useless extension candidates. Maximal degree in co-relation 2403. Up to 152 conditions per place. [2022-11-16 12:41:38,474 INFO L137 encePairwiseOnDemand]: 85/98 looper letters, 76 selfloop transitions, 63 changer transitions 3/184 dead transitions. [2022-11-16 12:41:38,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 184 transitions, 1913 flow [2022-11-16 12:41:38,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:41:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:41:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 718 transitions. [2022-11-16 12:41:38,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6660482374768089 [2022-11-16 12:41:38,477 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 718 transitions. [2022-11-16 12:41:38,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 718 transitions. [2022-11-16 12:41:38,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:38,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 718 transitions. [2022-11-16 12:41:38,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,482 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,482 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 1356 flow. Second operand 11 states and 718 transitions. [2022-11-16 12:41:38,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 184 transitions, 1913 flow [2022-11-16 12:41:38,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 184 transitions, 1766 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-16 12:41:38,498 INFO L231 Difference]: Finished difference. Result has 142 places, 145 transitions, 1372 flow [2022-11-16 12:41:38,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1372, PETRI_PLACES=142, PETRI_TRANSITIONS=145} [2022-11-16 12:41:38,499 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 63 predicate places. [2022-11-16 12:41:38,499 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 145 transitions, 1372 flow [2022-11-16 12:41:38,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.888888888888886) internal successors, (539), 9 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:38,500 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] [2022-11-16 12:41:38,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:41:38,500 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1451190643, now seen corresponding path program 1 times [2022-11-16 12:41:38,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:38,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965780951] [2022-11-16 12:41:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:38,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:38,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:38,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965780951] [2022-11-16 12:41:38,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965780951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:38,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:38,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749210199] [2022-11-16 12:41:38,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:38,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:38,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:38,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2022-11-16 12:41:38,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 145 transitions, 1372 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:38,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2022-11-16 12:41:38,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:38,714 INFO L130 PetriNetUnfolder]: 113/472 cut-off events. [2022-11-16 12:41:38,714 INFO L131 PetriNetUnfolder]: For 2274/2314 co-relation queries the response was YES. [2022-11-16 12:41:38,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 472 events. 113/472 cut-off events. For 2274/2314 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2984 event pairs, 19 based on Foata normal form. 23/488 useless extension candidates. Maximal degree in co-relation 1696. Up to 193 conditions per place. [2022-11-16 12:41:38,719 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 32 selfloop transitions, 56 changer transitions 0/155 dead transitions. [2022-11-16 12:41:38,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 155 transitions, 1672 flow [2022-11-16 12:41:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:41:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:41:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 525 transitions. [2022-11-16 12:41:38,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2022-11-16 12:41:38,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 525 transitions. [2022-11-16 12:41:38,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 525 transitions. [2022-11-16 12:41:38,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:38,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 525 transitions. [2022-11-16 12:41:38,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,725 INFO L175 Difference]: Start difference. First operand has 142 places, 145 transitions, 1372 flow. Second operand 7 states and 525 transitions. [2022-11-16 12:41:38,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 155 transitions, 1672 flow [2022-11-16 12:41:38,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 155 transitions, 1512 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-16 12:41:38,738 INFO L231 Difference]: Finished difference. Result has 137 places, 149 transitions, 1466 flow [2022-11-16 12:41:38,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1466, PETRI_PLACES=137, PETRI_TRANSITIONS=149} [2022-11-16 12:41:38,740 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 58 predicate places. [2022-11-16 12:41:38,740 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 149 transitions, 1466 flow [2022-11-16 12:41:38,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:38,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:38,741 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] [2022-11-16 12:41:38,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:41:38,742 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2102272510, now seen corresponding path program 1 times [2022-11-16 12:41:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:38,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599673412] [2022-11-16 12:41:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:38,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:38,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599673412] [2022-11-16 12:41:38,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599673412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:38,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318360429] [2022-11-16 12:41:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:38,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:38,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:38,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:38,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:41:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:38,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:41:38,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:38,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:39,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318360429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:39,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:39,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-16 12:41:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650050095] [2022-11-16 12:41:39,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:39,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:39,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:39,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:39,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:39,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 149 transitions, 1466 flow. Second operand has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:39,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:39,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:39,343 INFO L130 PetriNetUnfolder]: 208/699 cut-off events. [2022-11-16 12:41:39,343 INFO L131 PetriNetUnfolder]: For 2751/2781 co-relation queries the response was YES. [2022-11-16 12:41:39,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 699 events. 208/699 cut-off events. For 2751/2781 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4535 event pairs, 22 based on Foata normal form. 22/712 useless extension candidates. Maximal degree in co-relation 2637. Up to 103 conditions per place. [2022-11-16 12:41:39,354 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 116 selfloop transitions, 57 changer transitions 0/220 dead transitions. [2022-11-16 12:41:39,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 220 transitions, 2375 flow [2022-11-16 12:41:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:41:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:41:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 684 transitions. [2022-11-16 12:41:39,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7755102040816326 [2022-11-16 12:41:39,357 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 684 transitions. [2022-11-16 12:41:39,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 684 transitions. [2022-11-16 12:41:39,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:39,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 684 transitions. [2022-11-16 12:41:39,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,362 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,362 INFO L175 Difference]: Start difference. First operand has 137 places, 149 transitions, 1466 flow. Second operand 9 states and 684 transitions. [2022-11-16 12:41:39,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 220 transitions, 2375 flow [2022-11-16 12:41:39,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 220 transitions, 2325 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:39,383 INFO L231 Difference]: Finished difference. Result has 149 places, 185 transitions, 1959 flow [2022-11-16 12:41:39,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1959, PETRI_PLACES=149, PETRI_TRANSITIONS=185} [2022-11-16 12:41:39,384 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 70 predicate places. [2022-11-16 12:41:39,384 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 185 transitions, 1959 flow [2022-11-16 12:41:39,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:39,385 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] [2022-11-16 12:41:39,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:39,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:39,591 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash 480562596, now seen corresponding path program 1 times [2022-11-16 12:41:39,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154979393] [2022-11-16 12:41:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:39,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:39,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154979393] [2022-11-16 12:41:39,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154979393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:39,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:39,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013444459] [2022-11-16 12:41:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:39,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:39,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 185 transitions, 1959 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:39,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:39,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:39,926 INFO L130 PetriNetUnfolder]: 243/798 cut-off events. [2022-11-16 12:41:39,927 INFO L131 PetriNetUnfolder]: For 4875/4912 co-relation queries the response was YES. [2022-11-16 12:41:39,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 798 events. 243/798 cut-off events. For 4875/4912 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5238 event pairs, 23 based on Foata normal form. 24/807 useless extension candidates. Maximal degree in co-relation 3372. Up to 125 conditions per place. [2022-11-16 12:41:39,940 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 135 selfloop transitions, 86 changer transitions 2/270 dead transitions. [2022-11-16 12:41:39,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 270 transitions, 3263 flow [2022-11-16 12:41:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:41:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:41:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 682 transitions. [2022-11-16 12:41:39,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7732426303854876 [2022-11-16 12:41:39,942 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 682 transitions. [2022-11-16 12:41:39,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 682 transitions. [2022-11-16 12:41:39,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:39,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 682 transitions. [2022-11-16 12:41:39,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.77777777777777) internal successors, (682), 9 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,947 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,947 INFO L175 Difference]: Start difference. First operand has 149 places, 185 transitions, 1959 flow. Second operand 9 states and 682 transitions. [2022-11-16 12:41:39,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 270 transitions, 3263 flow [2022-11-16 12:41:39,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 270 transitions, 3192 flow, removed 28 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:39,993 INFO L231 Difference]: Finished difference. Result has 161 places, 230 transitions, 2752 flow [2022-11-16 12:41:39,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2752, PETRI_PLACES=161, PETRI_TRANSITIONS=230} [2022-11-16 12:41:39,994 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 82 predicate places. [2022-11-16 12:41:39,994 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 230 transitions, 2752 flow [2022-11-16 12:41:39,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:39,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:39,995 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] [2022-11-16 12:41:39,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:41:39,995 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:39,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1551770848, now seen corresponding path program 2 times [2022-11-16 12:41:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:39,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437598520] [2022-11-16 12:41:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:39,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:40,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437598520] [2022-11-16 12:41:40,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437598520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:40,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:40,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409167130] [2022-11-16 12:41:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:40,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:40,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:40,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:40,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 230 transitions, 2752 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:40,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:40,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:40,296 INFO L130 PetriNetUnfolder]: 240/794 cut-off events. [2022-11-16 12:41:40,297 INFO L131 PetriNetUnfolder]: For 6492/6554 co-relation queries the response was YES. [2022-11-16 12:41:40,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 794 events. 240/794 cut-off events. For 6492/6554 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5211 event pairs, 42 based on Foata normal form. 29/813 useless extension candidates. Maximal degree in co-relation 3679. Up to 179 conditions per place. [2022-11-16 12:41:40,307 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 177 selfloop transitions, 40 changer transitions 10/274 dead transitions. [2022-11-16 12:41:40,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 274 transitions, 3668 flow [2022-11-16 12:41:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:41:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:41:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2022-11-16 12:41:40,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7842565597667639 [2022-11-16 12:41:40,309 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2022-11-16 12:41:40,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2022-11-16 12:41:40,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:40,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2022-11-16 12:41:40,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,313 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,313 INFO L175 Difference]: Start difference. First operand has 161 places, 230 transitions, 2752 flow. Second operand 7 states and 538 transitions. [2022-11-16 12:41:40,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 274 transitions, 3668 flow [2022-11-16 12:41:40,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 274 transitions, 3615 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:40,355 INFO L231 Difference]: Finished difference. Result has 168 places, 235 transitions, 2866 flow [2022-11-16 12:41:40,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2866, PETRI_PLACES=168, PETRI_TRANSITIONS=235} [2022-11-16 12:41:40,356 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 89 predicate places. [2022-11-16 12:41:40,356 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 235 transitions, 2866 flow [2022-11-16 12:41:40,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:40,357 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] [2022-11-16 12:41:40,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:41:40,357 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash -441433712, now seen corresponding path program 3 times [2022-11-16 12:41:40,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912525688] [2022-11-16 12:41:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:40,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:40,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:40,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912525688] [2022-11-16 12:41:40,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912525688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:40,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:40,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:40,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995074524] [2022-11-16 12:41:40,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:40,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:40,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:40,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:40,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:40,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 235 transitions, 2866 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:40,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:40,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:40,728 INFO L130 PetriNetUnfolder]: 252/867 cut-off events. [2022-11-16 12:41:40,729 INFO L131 PetriNetUnfolder]: For 7887/7961 co-relation queries the response was YES. [2022-11-16 12:41:40,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 867 events. 252/867 cut-off events. For 7887/7961 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5905 event pairs, 44 based on Foata normal form. 46/904 useless extension candidates. Maximal degree in co-relation 4076. Up to 211 conditions per place. [2022-11-16 12:41:40,740 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 189 selfloop transitions, 79 changer transitions 2/317 dead transitions. [2022-11-16 12:41:40,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 317 transitions, 4410 flow [2022-11-16 12:41:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 625 transitions. [2022-11-16 12:41:40,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971938775510204 [2022-11-16 12:41:40,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 625 transitions. [2022-11-16 12:41:40,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 625 transitions. [2022-11-16 12:41:40,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:40,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 625 transitions. [2022-11-16 12:41:40,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.125) internal successors, (625), 8 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 12:41:40,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,747 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,747 INFO L175 Difference]: Start difference. First operand has 168 places, 235 transitions, 2866 flow. Second operand 8 states and 625 transitions. [2022-11-16 12:41:40,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 317 transitions, 4410 flow [2022-11-16 12:41:40,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 317 transitions, 4277 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-11-16 12:41:40,792 INFO L231 Difference]: Finished difference. Result has 176 places, 258 transitions, 3402 flow [2022-11-16 12:41:40,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3402, PETRI_PLACES=176, PETRI_TRANSITIONS=258} [2022-11-16 12:41:40,793 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 97 predicate places. [2022-11-16 12:41:40,793 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 258 transitions, 3402 flow [2022-11-16 12:41:40,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:40,794 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] [2022-11-16 12:41:40,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:41:40,794 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:40,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1631662016, now seen corresponding path program 1 times [2022-11-16 12:41:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:40,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686704082] [2022-11-16 12:41:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:40,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:40,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:40,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686704082] [2022-11-16 12:41:40,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686704082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:40,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:40,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:40,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059731464] [2022-11-16 12:41:40,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:40,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:40,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:40,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:40,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:40,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:40,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 258 transitions, 3402 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:40,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:40,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:41,210 INFO L130 PetriNetUnfolder]: 278/997 cut-off events. [2022-11-16 12:41:41,210 INFO L131 PetriNetUnfolder]: For 9393/9482 co-relation queries the response was YES. [2022-11-16 12:41:41,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4781 conditions, 997 events. 278/997 cut-off events. For 9393/9482 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7281 event pairs, 37 based on Foata normal form. 41/1027 useless extension candidates. Maximal degree in co-relation 4737. Up to 205 conditions per place. [2022-11-16 12:41:41,230 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 190 selfloop transitions, 92 changer transitions 2/331 dead transitions. [2022-11-16 12:41:41,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 331 transitions, 4799 flow [2022-11-16 12:41:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 627 transitions. [2022-11-16 12:41:41,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997448979591837 [2022-11-16 12:41:41,233 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 627 transitions. [2022-11-16 12:41:41,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 627 transitions. [2022-11-16 12:41:41,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:41,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 627 transitions. [2022-11-16 12:41:41,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,237 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,238 INFO L175 Difference]: Start difference. First operand has 176 places, 258 transitions, 3402 flow. Second operand 8 states and 627 transitions. [2022-11-16 12:41:41,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 331 transitions, 4799 flow [2022-11-16 12:41:41,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 331 transitions, 4641 flow, removed 30 selfloop flow, removed 2 redundant places. [2022-11-16 12:41:41,290 INFO L231 Difference]: Finished difference. Result has 187 places, 276 transitions, 3870 flow [2022-11-16 12:41:41,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3870, PETRI_PLACES=187, PETRI_TRANSITIONS=276} [2022-11-16 12:41:41,295 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 108 predicate places. [2022-11-16 12:41:41,295 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 276 transitions, 3870 flow [2022-11-16 12:41:41,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:41,296 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] [2022-11-16 12:41:41,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:41:41,296 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1711036856, now seen corresponding path program 2 times [2022-11-16 12:41:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:41,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847671410] [2022-11-16 12:41:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:41,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:41,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:41,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847671410] [2022-11-16 12:41:41,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847671410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:41,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:41,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:41,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662157061] [2022-11-16 12:41:41,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:41,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:41,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:41,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 276 transitions, 3870 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:41,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:41,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:41,684 INFO L130 PetriNetUnfolder]: 272/964 cut-off events. [2022-11-16 12:41:41,685 INFO L131 PetriNetUnfolder]: For 10232/10303 co-relation queries the response was YES. [2022-11-16 12:41:41,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4826 conditions, 964 events. 272/964 cut-off events. For 10232/10303 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6958 event pairs, 44 based on Foata normal form. 35/988 useless extension candidates. Maximal degree in co-relation 4778. Up to 184 conditions per place. [2022-11-16 12:41:41,697 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 197 selfloop transitions, 66 changer transitions 6/316 dead transitions. [2022-11-16 12:41:41,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 316 transitions, 4791 flow [2022-11-16 12:41:41,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 617 transitions. [2022-11-16 12:41:41,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7869897959183674 [2022-11-16 12:41:41,699 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 617 transitions. [2022-11-16 12:41:41,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 617 transitions. [2022-11-16 12:41:41,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:41,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 617 transitions. [2022-11-16 12:41:41,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.125) internal successors, (617), 8 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 12:41:41,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,703 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,703 INFO L175 Difference]: Start difference. First operand has 187 places, 276 transitions, 3870 flow. Second operand 8 states and 617 transitions. [2022-11-16 12:41:41,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 316 transitions, 4791 flow [2022-11-16 12:41:41,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 316 transitions, 4770 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:41,768 INFO L231 Difference]: Finished difference. Result has 197 places, 276 transitions, 4041 flow [2022-11-16 12:41:41,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4041, PETRI_PLACES=197, PETRI_TRANSITIONS=276} [2022-11-16 12:41:41,772 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 118 predicate places. [2022-11-16 12:41:41,772 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 276 transitions, 4041 flow [2022-11-16 12:41:41,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:41,773 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] [2022-11-16 12:41:41,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:41:41,773 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:41,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1058665886, now seen corresponding path program 4 times [2022-11-16 12:41:41,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:41,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683292867] [2022-11-16 12:41:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:41,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:41,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683292867] [2022-11-16 12:41:41,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683292867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:41,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:41,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611207993] [2022-11-16 12:41:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:41,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:41,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 276 transitions, 4041 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:41,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:41,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:42,194 INFO L130 PetriNetUnfolder]: 256/897 cut-off events. [2022-11-16 12:41:42,194 INFO L131 PetriNetUnfolder]: For 10793/10858 co-relation queries the response was YES. [2022-11-16 12:41:42,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4641 conditions, 897 events. 256/897 cut-off events. For 10793/10858 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6218 event pairs, 40 based on Foata normal form. 22/909 useless extension candidates. Maximal degree in co-relation 4589. Up to 221 conditions per place. [2022-11-16 12:41:42,205 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 194 selfloop transitions, 65 changer transitions 3/309 dead transitions. [2022-11-16 12:41:42,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 309 transitions, 4853 flow [2022-11-16 12:41:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 612 transitions. [2022-11-16 12:41:42,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7806122448979592 [2022-11-16 12:41:42,208 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 612 transitions. [2022-11-16 12:41:42,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 612 transitions. [2022-11-16 12:41:42,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:42,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 612 transitions. [2022-11-16 12:41:42,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,212 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,212 INFO L175 Difference]: Start difference. First operand has 197 places, 276 transitions, 4041 flow. Second operand 8 states and 612 transitions. [2022-11-16 12:41:42,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 309 transitions, 4853 flow [2022-11-16 12:41:42,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 309 transitions, 4790 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-16 12:41:42,276 INFO L231 Difference]: Finished difference. Result has 203 places, 272 transitions, 4113 flow [2022-11-16 12:41:42,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3841, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4113, PETRI_PLACES=203, PETRI_TRANSITIONS=272} [2022-11-16 12:41:42,277 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 124 predicate places. [2022-11-16 12:41:42,277 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 272 transitions, 4113 flow [2022-11-16 12:41:42,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:42,278 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] [2022-11-16 12:41:42,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:41:42,278 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1255129484, now seen corresponding path program 5 times [2022-11-16 12:41:42,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:42,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550286024] [2022-11-16 12:41:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:42,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:42,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550286024] [2022-11-16 12:41:42,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550286024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:42,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:42,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:42,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778280398] [2022-11-16 12:41:42,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:42,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:42,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:42,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:42,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:42,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 272 transitions, 4113 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:42,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:42,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:42,730 INFO L130 PetriNetUnfolder]: 241/827 cut-off events. [2022-11-16 12:41:42,731 INFO L131 PetriNetUnfolder]: For 11602/11666 co-relation queries the response was YES. [2022-11-16 12:41:42,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4473 conditions, 827 events. 241/827 cut-off events. For 11602/11666 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5463 event pairs, 35 based on Foata normal form. 38/854 useless extension candidates. Maximal degree in co-relation 4420. Up to 167 conditions per place. [2022-11-16 12:41:42,741 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 165 selfloop transitions, 98 changer transitions 3/313 dead transitions. [2022-11-16 12:41:42,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 313 transitions, 5008 flow [2022-11-16 12:41:42,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:42,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 627 transitions. [2022-11-16 12:41:42,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7997448979591837 [2022-11-16 12:41:42,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 627 transitions. [2022-11-16 12:41:42,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 627 transitions. [2022-11-16 12:41:42,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:42,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 627 transitions. [2022-11-16 12:41:42,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.375) internal successors, (627), 8 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,762 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,762 INFO L175 Difference]: Start difference. First operand has 203 places, 272 transitions, 4113 flow. Second operand 8 states and 627 transitions. [2022-11-16 12:41:42,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 313 transitions, 5008 flow [2022-11-16 12:41:42,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 313 transitions, 4908 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-16 12:41:42,812 INFO L231 Difference]: Finished difference. Result has 203 places, 266 transitions, 4174 flow [2022-11-16 12:41:42,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3900, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4174, PETRI_PLACES=203, PETRI_TRANSITIONS=266} [2022-11-16 12:41:42,813 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 124 predicate places. [2022-11-16 12:41:42,813 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 266 transitions, 4174 flow [2022-11-16 12:41:42,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:42,815 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] [2022-11-16 12:41:42,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:41:42,815 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash 510391134, now seen corresponding path program 3 times [2022-11-16 12:41:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:42,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582376938] [2022-11-16 12:41:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:42,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:42,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582376938] [2022-11-16 12:41:42,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582376938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:42,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:42,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:42,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842879292] [2022-11-16 12:41:42,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:42,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:42,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:42,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 266 transitions, 4174 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:42,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:42,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:43,279 INFO L130 PetriNetUnfolder]: 230/796 cut-off events. [2022-11-16 12:41:43,280 INFO L131 PetriNetUnfolder]: For 12087/12136 co-relation queries the response was YES. [2022-11-16 12:41:43,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 796 events. 230/796 cut-off events. For 12087/12136 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5213 event pairs, 35 based on Foata normal form. 24/808 useless extension candidates. Maximal degree in co-relation 4328. Up to 232 conditions per place. [2022-11-16 12:41:43,290 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 168 selfloop transitions, 80 changer transitions 1/296 dead transitions. [2022-11-16 12:41:43,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 296 transitions, 4870 flow [2022-11-16 12:41:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 621 transitions. [2022-11-16 12:41:43,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7920918367346939 [2022-11-16 12:41:43,292 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 621 transitions. [2022-11-16 12:41:43,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 621 transitions. [2022-11-16 12:41:43,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:43,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 621 transitions. [2022-11-16 12:41:43,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.625) internal successors, (621), 8 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 12:41:43,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,296 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,296 INFO L175 Difference]: Start difference. First operand has 203 places, 266 transitions, 4174 flow. Second operand 8 states and 621 transitions. [2022-11-16 12:41:43,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 296 transitions, 4870 flow [2022-11-16 12:41:43,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 296 transitions, 4839 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-16 12:41:43,357 INFO L231 Difference]: Finished difference. Result has 208 places, 262 transitions, 4253 flow [2022-11-16 12:41:43,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3964, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4253, PETRI_PLACES=208, PETRI_TRANSITIONS=262} [2022-11-16 12:41:43,358 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 129 predicate places. [2022-11-16 12:41:43,358 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 262 transitions, 4253 flow [2022-11-16 12:41:43,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:43,359 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] [2022-11-16 12:41:43,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:41:43,359 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:43,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash 623223244, now seen corresponding path program 4 times [2022-11-16 12:41:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:43,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221874465] [2022-11-16 12:41:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:43,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:43,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:43,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221874465] [2022-11-16 12:41:43,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221874465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:43,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:43,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669116403] [2022-11-16 12:41:43,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:43,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:43,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:43,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:43,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:43,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 262 transitions, 4253 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:43,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:43,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:43,690 INFO L130 PetriNetUnfolder]: 228/793 cut-off events. [2022-11-16 12:41:43,690 INFO L131 PetriNetUnfolder]: For 12945/12977 co-relation queries the response was YES. [2022-11-16 12:41:43,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4501 conditions, 793 events. 228/793 cut-off events. For 12945/12977 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5236 event pairs, 45 based on Foata normal form. 8/789 useless extension candidates. Maximal degree in co-relation 4451. Up to 196 conditions per place. [2022-11-16 12:41:43,700 INFO L137 encePairwiseOnDemand]: 92/98 looper letters, 189 selfloop transitions, 38 changer transitions 7/281 dead transitions. [2022-11-16 12:41:43,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 281 transitions, 4852 flow [2022-11-16 12:41:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:41:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:41:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 534 transitions. [2022-11-16 12:41:43,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7784256559766763 [2022-11-16 12:41:43,703 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 534 transitions. [2022-11-16 12:41:43,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 534 transitions. [2022-11-16 12:41:43,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:43,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 534 transitions. [2022-11-16 12:41:43,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.28571428571429) internal successors, (534), 7 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,707 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,708 INFO L175 Difference]: Start difference. First operand has 208 places, 262 transitions, 4253 flow. Second operand 7 states and 534 transitions. [2022-11-16 12:41:43,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 281 transitions, 4852 flow [2022-11-16 12:41:43,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 281 transitions, 4754 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-16 12:41:43,768 INFO L231 Difference]: Finished difference. Result has 212 places, 257 transitions, 4118 flow [2022-11-16 12:41:43,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=4129, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4118, PETRI_PLACES=212, PETRI_TRANSITIONS=257} [2022-11-16 12:41:43,769 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 133 predicate places. [2022-11-16 12:41:43,769 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 257 transitions, 4118 flow [2022-11-16 12:41:43,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:43,770 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] [2022-11-16 12:41:43,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:41:43,770 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:43,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash 966771398, now seen corresponding path program 5 times [2022-11-16 12:41:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:43,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637193744] [2022-11-16 12:41:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:43,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:43,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637193744] [2022-11-16 12:41:43,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637193744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:43,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:43,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425533279] [2022-11-16 12:41:43,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:43,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:43,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:43,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:43,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:43,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:43,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 257 transitions, 4118 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:43,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:43,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:43,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:44,125 INFO L130 PetriNetUnfolder]: 214/730 cut-off events. [2022-11-16 12:41:44,125 INFO L131 PetriNetUnfolder]: For 11692/11724 co-relation queries the response was YES. [2022-11-16 12:41:44,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 730 events. 214/730 cut-off events. For 11692/11724 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4616 event pairs, 37 based on Foata normal form. 11/731 useless extension candidates. Maximal degree in co-relation 4020. Up to 196 conditions per place. [2022-11-16 12:41:44,135 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 160 selfloop transitions, 53 changer transitions 2/262 dead transitions. [2022-11-16 12:41:44,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 262 transitions, 4356 flow [2022-11-16 12:41:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:41:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:41:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-11-16 12:41:44,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7742346938775511 [2022-11-16 12:41:44,137 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-11-16 12:41:44,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-11-16 12:41:44,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:44,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-11-16 12:41:44,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,142 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,142 INFO L175 Difference]: Start difference. First operand has 212 places, 257 transitions, 4118 flow. Second operand 8 states and 607 transitions. [2022-11-16 12:41:44,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 262 transitions, 4356 flow [2022-11-16 12:41:44,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 262 transitions, 4208 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-16 12:41:44,197 INFO L231 Difference]: Finished difference. Result has 211 places, 237 transitions, 3676 flow [2022-11-16 12:41:44,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3676, PETRI_PLACES=211, PETRI_TRANSITIONS=237} [2022-11-16 12:41:44,198 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 132 predicate places. [2022-11-16 12:41:44,198 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 237 transitions, 3676 flow [2022-11-16 12:41:44,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:44,199 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] [2022-11-16 12:41:44,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:41:44,199 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:44,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:44,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1619142368, now seen corresponding path program 6 times [2022-11-16 12:41:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:44,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934473366] [2022-11-16 12:41:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:44,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:44,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934473366] [2022-11-16 12:41:44,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934473366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:44,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:44,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:44,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854425605] [2022-11-16 12:41:44,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:44,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:44,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:44,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:44,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:44,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2022-11-16 12:41:44,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 237 transitions, 3676 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:44,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2022-11-16 12:41:44,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:44,513 INFO L130 PetriNetUnfolder]: 196/657 cut-off events. [2022-11-16 12:41:44,513 INFO L131 PetriNetUnfolder]: For 10407/10437 co-relation queries the response was YES. [2022-11-16 12:41:44,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 657 events. 196/657 cut-off events. For 10407/10437 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3894 event pairs, 38 based on Foata normal form. 8/654 useless extension candidates. Maximal degree in co-relation 3608. Up to 186 conditions per place. [2022-11-16 12:41:44,522 INFO L137 encePairwiseOnDemand]: 90/98 looper letters, 134 selfloop transitions, 52 changer transitions 3/236 dead transitions. [2022-11-16 12:41:44,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 236 transitions, 3808 flow [2022-11-16 12:41:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:41:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:41:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 530 transitions. [2022-11-16 12:41:44,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7725947521865889 [2022-11-16 12:41:44,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 530 transitions. [2022-11-16 12:41:44,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 530 transitions. [2022-11-16 12:41:44,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:44,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 530 transitions. [2022-11-16 12:41:44,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,528 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,528 INFO L175 Difference]: Start difference. First operand has 211 places, 237 transitions, 3676 flow. Second operand 7 states and 530 transitions. [2022-11-16 12:41:44,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 236 transitions, 3808 flow [2022-11-16 12:41:44,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 236 transitions, 3638 flow, removed 11 selfloop flow, removed 10 redundant places. [2022-11-16 12:41:44,574 INFO L231 Difference]: Finished difference. Result has 202 places, 217 transitions, 3206 flow [2022-11-16 12:41:44,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=3141, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3206, PETRI_PLACES=202, PETRI_TRANSITIONS=217} [2022-11-16 12:41:44,575 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 123 predicate places. [2022-11-16 12:41:44,575 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 217 transitions, 3206 flow [2022-11-16 12:41:44,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:44,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:44,576 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, 1, 1] [2022-11-16 12:41:44,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 12:41:44,576 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1044760082, now seen corresponding path program 1 times [2022-11-16 12:41:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:44,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141216955] [2022-11-16 12:41:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:44,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:44,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:44,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141216955] [2022-11-16 12:41:44,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141216955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:44,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064576556] [2022-11-16 12:41:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:44,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:44,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:44,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:44,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:41:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:44,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:41:44,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:45,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:45,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064576556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:45,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:45,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-16 12:41:45,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840511099] [2022-11-16 12:41:45,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:45,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:41:45,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:45,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:41:45,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:41:45,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-16 12:41:45,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 217 transitions, 3206 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:45,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:45,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-16 12:41:45,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:55,582 INFO L130 PetriNetUnfolder]: 2355/5411 cut-off events. [2022-11-16 12:41:55,582 INFO L131 PetriNetUnfolder]: For 68230/68230 co-relation queries the response was YES. [2022-11-16 12:41:55,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28722 conditions, 5411 events. 2355/5411 cut-off events. For 68230/68230 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 41647 event pairs, 108 based on Foata normal form. 30/5428 useless extension candidates. Maximal degree in co-relation 28682. Up to 549 conditions per place. [2022-11-16 12:41:55,642 INFO L137 encePairwiseOnDemand]: 81/98 looper letters, 696 selfloop transitions, 993 changer transitions 20/1747 dead transitions. [2022-11-16 12:41:55,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1747 transitions, 25220 flow [2022-11-16 12:41:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-16 12:41:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2022-11-16 12:41:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 13688 transitions. [2022-11-16 12:41:55,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6263384277477807 [2022-11-16 12:41:55,666 INFO L72 ComplementDD]: Start complementDD. Operand 223 states and 13688 transitions. [2022-11-16 12:41:55,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 13688 transitions. [2022-11-16 12:41:55,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:55,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 223 states and 13688 transitions. [2022-11-16 12:41:55,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 224 states, 223 states have (on average 61.38116591928251) internal successors, (13688), 223 states have internal predecessors, (13688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:55,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 224 states, 224 states have (on average 98.0) internal successors, (21952), 224 states have internal predecessors, (21952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:55,740 INFO L81 ComplementDD]: Finished complementDD. Result has 224 states, 224 states have (on average 98.0) internal successors, (21952), 224 states have internal predecessors, (21952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:55,741 INFO L175 Difference]: Start difference. First operand has 202 places, 217 transitions, 3206 flow. Second operand 223 states and 13688 transitions. [2022-11-16 12:41:55,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1747 transitions, 25220 flow [2022-11-16 12:41:56,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 1747 transitions, 24160 flow, removed 16 selfloop flow, removed 12 redundant places. [2022-11-16 12:41:56,142 INFO L231 Difference]: Finished difference. Result has 446 places, 1205 transitions, 20464 flow [2022-11-16 12:41:56,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=223, PETRI_FLOW=20464, PETRI_PLACES=446, PETRI_TRANSITIONS=1205} [2022-11-16 12:41:56,143 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 367 predicate places. [2022-11-16 12:41:56,144 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 1205 transitions, 20464 flow [2022-11-16 12:41:56,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:56,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:56,145 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, 1, 1] [2022-11-16 12:41:56,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:56,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-16 12:41:56,351 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:41:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:56,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1061656894, now seen corresponding path program 1 times [2022-11-16 12:41:56,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:56,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750764630] [2022-11-16 12:41:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:56,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:56,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:56,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750764630] [2022-11-16 12:41:56,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750764630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:56,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438121743] [2022-11-16 12:41:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:56,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:56,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:56,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:56,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:41:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:56,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:41:56,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:57,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:57,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438121743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:41:57,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:41:57,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-16 12:41:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603015208] [2022-11-16 12:41:57,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:41:57,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:41:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:41:57,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-16 12:41:57,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1205 transitions, 20464 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:57,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:57,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-16 12:41:57,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:05,480 INFO L130 PetriNetUnfolder]: 2608/5908 cut-off events. [2022-11-16 12:42:05,480 INFO L131 PetriNetUnfolder]: For 83342/83342 co-relation queries the response was YES. [2022-11-16 12:42:05,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34764 conditions, 5908 events. 2608/5908 cut-off events. For 83342/83342 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 46250 event pairs, 241 based on Foata normal form. 9/5897 useless extension candidates. Maximal degree in co-relation 34688. Up to 612 conditions per place. [2022-11-16 12:42:05,564 INFO L137 encePairwiseOnDemand]: 82/98 looper letters, 718 selfloop transitions, 993 changer transitions 24/1773 dead transitions. [2022-11-16 12:42:05,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1773 transitions, 29440 flow [2022-11-16 12:42:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-11-16 12:42:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2022-11-16 12:42:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 9179 transitions. [2022-11-16 12:42:05,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6286125188330366 [2022-11-16 12:42:05,578 INFO L72 ComplementDD]: Start complementDD. Operand 149 states and 9179 transitions. [2022-11-16 12:42:05,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 9179 transitions. [2022-11-16 12:42:05,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:05,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 149 states and 9179 transitions. [2022-11-16 12:42:05,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 150 states, 149 states have (on average 61.604026845637584) internal successors, (9179), 149 states have internal predecessors, (9179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:05,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 150 states, 150 states have (on average 98.0) internal successors, (14700), 150 states have internal predecessors, (14700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:05,624 INFO L81 ComplementDD]: Finished complementDD. Result has 150 states, 150 states have (on average 98.0) internal successors, (14700), 150 states have internal predecessors, (14700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:05,624 INFO L175 Difference]: Start difference. First operand has 446 places, 1205 transitions, 20464 flow. Second operand 149 states and 9179 transitions. [2022-11-16 12:42:05,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1773 transitions, 29440 flow [2022-11-16 12:42:06,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 1773 transitions, 28701 flow, removed 149 selfloop flow, removed 5 redundant places. [2022-11-16 12:42:06,527 INFO L231 Difference]: Finished difference. Result has 629 places, 1393 transitions, 25389 flow [2022-11-16 12:42:06,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=19870, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=795, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=149, PETRI_FLOW=25389, PETRI_PLACES=629, PETRI_TRANSITIONS=1393} [2022-11-16 12:42:06,528 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 550 predicate places. [2022-11-16 12:42:06,529 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 1393 transitions, 25389 flow [2022-11-16 12:42:06,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:06,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:06,529 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, 1, 1] [2022-11-16 12:42:06,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 12:42:06,730 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:42:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1870779784, now seen corresponding path program 2 times [2022-11-16 12:42:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:06,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431087524] [2022-11-16 12:42:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:06,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:06,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431087524] [2022-11-16 12:42:06,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431087524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:06,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71462547] [2022-11-16 12:42:06,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:42:06,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:06,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:06,902 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:06,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:42:06,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:42:06,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:06,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:42:06,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:07,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:07,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71462547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:07,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:07,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-16 12:42:07,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953940416] [2022-11-16 12:42:07,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:07,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:42:07,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:07,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:42:07,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:42:07,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-16 12:42:07,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 1393 transitions, 25389 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:07,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:07,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-16 12:42:07,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:21,723 INFO L130 PetriNetUnfolder]: 6225/14061 cut-off events. [2022-11-16 12:42:21,723 INFO L131 PetriNetUnfolder]: For 216420/216420 co-relation queries the response was YES. [2022-11-16 12:42:21,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90064 conditions, 14061 events. 6225/14061 cut-off events. For 216420/216420 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 129320 event pairs, 352 based on Foata normal form. 40/14066 useless extension candidates. Maximal degree in co-relation 89948. Up to 1606 conditions per place. [2022-11-16 12:42:22,200 INFO L137 encePairwiseOnDemand]: 78/98 looper letters, 1069 selfloop transitions, 3057 changer transitions 62/4226 dead transitions. [2022-11-16 12:42:22,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 4226 transitions, 80181 flow [2022-11-16 12:42:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-11-16 12:42:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2022-11-16 12:42:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 10063 transitions. [2022-11-16 12:42:22,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6299611869287592 [2022-11-16 12:42:22,220 INFO L72 ComplementDD]: Start complementDD. Operand 163 states and 10063 transitions. [2022-11-16 12:42:22,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 10063 transitions. [2022-11-16 12:42:22,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:22,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 163 states and 10063 transitions. [2022-11-16 12:42:22,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 164 states, 163 states have (on average 61.736196319018404) internal successors, (10063), 163 states have internal predecessors, (10063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:22,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 164 states, 164 states have (on average 98.0) internal successors, (16072), 164 states have internal predecessors, (16072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:22,278 INFO L81 ComplementDD]: Finished complementDD. Result has 164 states, 164 states have (on average 98.0) internal successors, (16072), 164 states have internal predecessors, (16072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:22,278 INFO L175 Difference]: Start difference. First operand has 629 places, 1393 transitions, 25389 flow. Second operand 163 states and 10063 transitions. [2022-11-16 12:42:22,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 784 places, 4226 transitions, 80181 flow [2022-11-16 12:42:25,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 731 places, 4226 transitions, 77476 flow, removed 388 selfloop flow, removed 53 redundant places. [2022-11-16 12:42:25,882 INFO L231 Difference]: Finished difference. Result has 796 places, 3635 transitions, 74921 flow [2022-11-16 12:42:25,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=24487, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1020, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=163, PETRI_FLOW=74921, PETRI_PLACES=796, PETRI_TRANSITIONS=3635} [2022-11-16 12:42:25,883 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 717 predicate places. [2022-11-16 12:42:25,883 INFO L495 AbstractCegarLoop]: Abstraction has has 796 places, 3635 transitions, 74921 flow [2022-11-16 12:42:25,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:25,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:25,884 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, 1, 1] [2022-11-16 12:42:25,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:26,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-16 12:42:26,084 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:42:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:26,085 INFO L85 PathProgramCache]: Analyzing trace with hash 490253768, now seen corresponding path program 2 times [2022-11-16 12:42:26,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:26,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029839028] [2022-11-16 12:42:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:26,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:26,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:26,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029839028] [2022-11-16 12:42:26,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029839028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:26,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610951415] [2022-11-16 12:42:26,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:42:26,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:26,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:26,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:26,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:42:26,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:42:26,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:26,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:42:26,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:26,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:26,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610951415] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:26,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:26,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-16 12:42:26,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397849446] [2022-11-16 12:42:26,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:26,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:42:26,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:42:26,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:42:26,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-16 12:42:26,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 3635 transitions, 74921 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:26,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:26,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-16 12:42:26,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:03,542 INFO L130 PetriNetUnfolder]: 11525/24829 cut-off events. [2022-11-16 12:43:03,542 INFO L131 PetriNetUnfolder]: For 528013/528013 co-relation queries the response was YES. [2022-11-16 12:43:04,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180012 conditions, 24829 events. 11525/24829 cut-off events. For 528013/528013 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 240356 event pairs, 860 based on Foata normal form. 25/24769 useless extension candidates. Maximal degree in co-relation 179840. Up to 3331 conditions per place. [2022-11-16 12:43:04,267 INFO L137 encePairwiseOnDemand]: 79/98 looper letters, 1746 selfloop transitions, 5060 changer transitions 108/6952 dead transitions. [2022-11-16 12:43:04,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 926 places, 6952 transitions, 154040 flow [2022-11-16 12:43:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-16 12:43:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2022-11-16 12:43:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 8274 transitions. [2022-11-16 12:43:04,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6348012889366272 [2022-11-16 12:43:04,281 INFO L72 ComplementDD]: Start complementDD. Operand 133 states and 8274 transitions. [2022-11-16 12:43:04,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 133 states and 8274 transitions. [2022-11-16 12:43:04,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:04,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 133 states and 8274 transitions. [2022-11-16 12:43:04,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 134 states, 133 states have (on average 62.21052631578947) internal successors, (8274), 133 states have internal predecessors, (8274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:04,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 134 states, 134 states have (on average 98.0) internal successors, (13132), 134 states have internal predecessors, (13132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:04,328 INFO L81 ComplementDD]: Finished complementDD. Result has 134 states, 134 states have (on average 98.0) internal successors, (13132), 134 states have internal predecessors, (13132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:04,328 INFO L175 Difference]: Start difference. First operand has 796 places, 3635 transitions, 74921 flow. Second operand 133 states and 8274 transitions. [2022-11-16 12:43:04,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 926 places, 6952 transitions, 154040 flow [2022-11-16 12:43:17,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 919 places, 6952 transitions, 149431 flow, removed 372 selfloop flow, removed 7 redundant places. [2022-11-16 12:43:17,771 INFO L231 Difference]: Finished difference. Result has 989 places, 6241 transitions, 145969 flow [2022-11-16 12:43:17,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=72337, PETRI_DIFFERENCE_MINUEND_PLACES=787, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2678, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=133, PETRI_FLOW=145969, PETRI_PLACES=989, PETRI_TRANSITIONS=6241} [2022-11-16 12:43:17,775 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 910 predicate places. [2022-11-16 12:43:17,775 INFO L495 AbstractCegarLoop]: Abstraction has has 989 places, 6241 transitions, 145969 flow [2022-11-16 12:43:17,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:17,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:17,776 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, 1, 1] [2022-11-16 12:43:17,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:17,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-16 12:43:17,982 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 12:43:17,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash -857423534, now seen corresponding path program 3 times [2022-11-16 12:43:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:17,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875100546] [2022-11-16 12:43:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:17,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:18,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:18,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875100546] [2022-11-16 12:43:18,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875100546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:18,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260525153] [2022-11-16 12:43:18,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:43:18,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:18,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:18,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:18,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5c1d204-7ac4-44e6-a9da-e7b87ced4fc4/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:43:18,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:43:18,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:43:18,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:43:18,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:18,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:18,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260525153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:43:18,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:43:18,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-16 12:43:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110186994] [2022-11-16 12:43:18,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:43:18,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:43:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:18,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:43:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:43:18,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 98 [2022-11-16 12:43:18,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 989 places, 6241 transitions, 145969 flow. Second operand has 29 states, 29 states have (on average 58.62068965517241) internal successors, (1700), 29 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:18,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:18,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 98 [2022-11-16 12:43:18,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand