./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.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_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/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_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/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_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/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 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- 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 10:53:55,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:53:55,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:53:55,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:53:55,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:53:55,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:53:55,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:53:55,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:53:55,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:53:55,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:53:55,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:53:55,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:53:55,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:53:55,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:53:55,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:53:55,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:53:55,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:53:55,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:53:55,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:53:55,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:53:55,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:53:55,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:53:55,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:53:55,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:53:55,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:53:55,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:53:55,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:53:55,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:53:55,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:53:55,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:53:55,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:53:55,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:53:55,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:53:55,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:53:55,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:53:55,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:53:55,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:53:55,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:53:55,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:53:55,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:53:55,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:53:55,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:53:55,589 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:53:55,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:53:55,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:53:55,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:53:55,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:53:55,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:53:55,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:53:55,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:53:55,592 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:53:55,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:53:55,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:53:55,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:53:55,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:53:55,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:53:55,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:53:55,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:53:55,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:53:55,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:53:55,595 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:53:55,595 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:53:55,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:53:55,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:53:55,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:53:55,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:53:55,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:53:55,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:53:55,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:53:55,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:53:55,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:53:55,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:53:55,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:53:55,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:53:55,599 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:53:55,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:53:55,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:53:55,600 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_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-16 10:53:55,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:53:55,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:53:55,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:53:55,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:53:55,916 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:53:55,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-16 10:53:55,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/data/ae47597b0/ae03d15337b144cb8c31bb67a9ae04dd/FLAG50c4dcd71 [2022-11-16 10:53:56,412 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:53:56,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-16 10:53:56,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/data/ae47597b0/ae03d15337b144cb8c31bb67a9ae04dd/FLAG50c4dcd71 [2022-11-16 10:53:56,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/data/ae47597b0/ae03d15337b144cb8c31bb67a9ae04dd [2022-11-16 10:53:56,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:53:56,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:53:56,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:53:56,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:53:56,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:53:56,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:56" (1/1) ... [2022-11-16 10:53:56,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2846b774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:56, skipping insertion in model container [2022-11-16 10:53:56,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:56" (1/1) ... [2022-11-16 10:53:56,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:53:56,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:53:57,067 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_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-16 10:53:57,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:53:57,085 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:53:57,120 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_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-16 10:53:57,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:53:57,146 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:53:57,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57 WrapperNode [2022-11-16 10:53:57,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:53:57,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:53:57,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:53:57,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:53:57,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,196 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 250 [2022-11-16 10:53:57,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:53:57,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:53:57,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:53:57,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:53:57,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:53:57,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:53:57,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:53:57,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:53:57,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (1/1) ... [2022-11-16 10:53:57,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:53:57,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:53:57,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:53:57,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:53:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:53:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:53:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:53:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:53:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 10:53:57,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 10:53:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 10:53:57,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 10:53:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:53:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:53:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:53:57,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:53:57,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:53:57,333 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 10:53:57,453 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:53:57,456 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:53:58,036 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:53:58,050 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:53:58,050 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 10:53:58,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:53:58 BoogieIcfgContainer [2022-11-16 10:53:58,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:53:58,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:53:58,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:53:58,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:53:58,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:53:56" (1/3) ... [2022-11-16 10:53:58,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1525f3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:58, skipping insertion in model container [2022-11-16 10:53:58,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:57" (2/3) ... [2022-11-16 10:53:58,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1525f3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:58, skipping insertion in model container [2022-11-16 10:53:58,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:53:58" (3/3) ... [2022-11-16 10:53:58,063 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-11-16 10:53:58,076 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:53:58,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:53:58,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-16 10:53:58,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:53:58,234 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 10:53:58,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 332 transitions, 680 flow [2022-11-16 10:53:58,452 INFO L130 PetriNetUnfolder]: 23/330 cut-off events. [2022-11-16 10:53:58,452 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 10:53:58,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 330 events. 23/330 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 724 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 206. Up to 2 conditions per place. [2022-11-16 10:53:58,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 332 transitions, 680 flow [2022-11-16 10:53:58,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 312 transitions, 636 flow [2022-11-16 10:53:58,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:53:58,487 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;@50acaaf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:53:58,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-16 10:53:58,504 INFO L130 PetriNetUnfolder]: 3/92 cut-off events. [2022-11-16 10:53:58,505 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:53:58,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:53:58,506 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, 1, 1, 1, 1, 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 10:53:58,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:53:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:53:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash 322735784, now seen corresponding path program 1 times [2022-11-16 10:53:58,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:53:58,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022098601] [2022-11-16 10:53:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:53:58,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:53:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:53:58,976 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 10:53:58,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:53:58,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022098601] [2022-11-16 10:53:58,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022098601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:53:58,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:53:58,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:53:58,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338737096] [2022-11-16 10:53:58,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:53:58,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:53:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:53:59,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:53:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:53:59,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-16 10:53:59,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 312 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:53:59,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:53:59,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-16 10:53:59,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:53:59,260 INFO L130 PetriNetUnfolder]: 17/513 cut-off events. [2022-11-16 10:53:59,261 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-16 10:53:59,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 513 events. 17/513 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2133 event pairs, 0 based on Foata normal form. 34/477 useless extension candidates. Maximal degree in co-relation 337. Up to 17 conditions per place. [2022-11-16 10:53:59,271 INFO L137 encePairwiseOnDemand]: 311/332 looper letters, 22 selfloop transitions, 4 changer transitions 6/309 dead transitions. [2022-11-16 10:53:59,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 309 transitions, 698 flow [2022-11-16 10:53:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:53:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:53:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1553 transitions. [2022-11-16 10:53:59,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9355421686746987 [2022-11-16 10:53:59,291 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1553 transitions. [2022-11-16 10:53:59,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1553 transitions. [2022-11-16 10:53:59,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:53:59,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1553 transitions. [2022-11-16 10:53:59,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:53:59,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:53:59,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:53:59,317 INFO L175 Difference]: Start difference. First operand has 297 places, 312 transitions, 636 flow. Second operand 5 states and 1553 transitions. [2022-11-16 10:53:59,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 309 transitions, 698 flow [2022-11-16 10:53:59,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 309 transitions, 682 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:53:59,329 INFO L231 Difference]: Finished difference. Result has 298 places, 295 transitions, 617 flow [2022-11-16 10:53:59,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=617, PETRI_PLACES=298, PETRI_TRANSITIONS=295} [2022-11-16 10:53:59,335 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 1 predicate places. [2022-11-16 10:53:59,336 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 295 transitions, 617 flow [2022-11-16 10:53:59,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:53:59,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:53:59,337 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:53:59,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:53:59,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:53:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:53:59,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1266272972, now seen corresponding path program 1 times [2022-11-16 10:53:59,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:53:59,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992867109] [2022-11-16 10:53:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:53:59,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:53:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:53:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:53:59,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:53:59,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992867109] [2022-11-16 10:53:59,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992867109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:53:59,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527390977] [2022-11-16 10:53:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:53:59,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:53:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:53:59,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:53:59,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:53:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:53:59,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:53:59,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:53:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:53:59,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:53:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:53:59,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527390977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:53:59,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:53:59,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 10:53:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899187748] [2022-11-16 10:53:59,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:53:59,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:53:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:53:59,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:53:59,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:53:59,991 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-16 10:53:59,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 295 transitions, 617 flow. Second operand has 12 states, 12 states have (on average 301.6666666666667) internal successors, (3620), 12 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:53:59,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:53:59,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-16 10:53:59,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:00,501 INFO L130 PetriNetUnfolder]: 41/1146 cut-off events. [2022-11-16 10:54:00,502 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-11-16 10:54:00,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 1146 events. 41/1146 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6979 event pairs, 0 based on Foata normal form. 3/984 useless extension candidates. Maximal degree in co-relation 928. Up to 11 conditions per place. [2022-11-16 10:54:00,521 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 43 selfloop transitions, 18 changer transitions 0/338 dead transitions. [2022-11-16 10:54:00,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 338 transitions, 859 flow [2022-11-16 10:54:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 10:54:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 10:54:00,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5446 transitions. [2022-11-16 10:54:00,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9113119143239625 [2022-11-16 10:54:00,533 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5446 transitions. [2022-11-16 10:54:00,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5446 transitions. [2022-11-16 10:54:00,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:00,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5446 transitions. [2022-11-16 10:54:00,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 302.55555555555554) internal successors, (5446), 18 states have internal predecessors, (5446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,564 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,565 INFO L175 Difference]: Start difference. First operand has 298 places, 295 transitions, 617 flow. Second operand 18 states and 5446 transitions. [2022-11-16 10:54:00,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 338 transitions, 859 flow [2022-11-16 10:54:00,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 338 transitions, 857 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:00,575 INFO L231 Difference]: Finished difference. Result has 313 places, 307 transitions, 721 flow [2022-11-16 10:54:00,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=721, PETRI_PLACES=313, PETRI_TRANSITIONS=307} [2022-11-16 10:54:00,578 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 16 predicate places. [2022-11-16 10:54:00,578 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 307 transitions, 721 flow [2022-11-16 10:54:00,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.6666666666667) internal successors, (3620), 12 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:00,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:00,583 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:00,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:00,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 10:54:00,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:00,790 INFO L85 PathProgramCache]: Analyzing trace with hash 599757052, now seen corresponding path program 1 times [2022-11-16 10:54:00,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:00,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443086988] [2022-11-16 10:54:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:00,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443086988] [2022-11-16 10:54:00,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443086988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:00,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524949036] [2022-11-16 10:54:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:00,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:00,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:00,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:01,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:54:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:01,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:01,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:01,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:01,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524949036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:01,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:01,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:54:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545648327] [2022-11-16 10:54:01,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:01,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:01,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:01,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-16 10:54:01,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 307 transitions, 721 flow. Second operand has 6 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 6 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:01,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-16 10:54:01,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:01,592 INFO L130 PetriNetUnfolder]: 41/1142 cut-off events. [2022-11-16 10:54:01,592 INFO L131 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2022-11-16 10:54:01,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 1142 events. 41/1142 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6954 event pairs, 0 based on Foata normal form. 4/981 useless extension candidates. Maximal degree in co-relation 1001. Up to 28 conditions per place. [2022-11-16 10:54:01,607 INFO L137 encePairwiseOnDemand]: 327/332 looper letters, 23 selfloop transitions, 11 changer transitions 0/311 dead transitions. [2022-11-16 10:54:01,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 311 transitions, 783 flow [2022-11-16 10:54:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2119 transitions. [2022-11-16 10:54:01,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9117900172117039 [2022-11-16 10:54:01,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2119 transitions. [2022-11-16 10:54:01,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2119 transitions. [2022-11-16 10:54:01,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:01,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2119 transitions. [2022-11-16 10:54:01,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.7142857142857) internal successors, (2119), 7 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,624 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,624 INFO L175 Difference]: Start difference. First operand has 313 places, 307 transitions, 721 flow. Second operand 7 states and 2119 transitions. [2022-11-16 10:54:01,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 311 transitions, 783 flow [2022-11-16 10:54:01,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 311 transitions, 751 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:01,634 INFO L231 Difference]: Finished difference. Result has 309 places, 303 transitions, 684 flow [2022-11-16 10:54:01,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=684, PETRI_PLACES=309, PETRI_TRANSITIONS=303} [2022-11-16 10:54:01,637 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 12 predicate places. [2022-11-16 10:54:01,637 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 303 transitions, 684 flow [2022-11-16 10:54:01,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 6 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:01,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:01,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:01,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:01,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:01,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:01,844 INFO L85 PathProgramCache]: Analyzing trace with hash 889681398, now seen corresponding path program 1 times [2022-11-16 10:54:01,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:01,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841677721] [2022-11-16 10:54:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:01,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:01,969 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 10:54:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:01,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841677721] [2022-11-16 10:54:01,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841677721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:01,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:01,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688841200] [2022-11-16 10:54:01,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:01,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:01,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:01,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:01,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-16 10:54:01,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 303 transitions, 684 flow. Second operand has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:01,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:01,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-16 10:54:01,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:02,907 INFO L130 PetriNetUnfolder]: 246/4032 cut-off events. [2022-11-16 10:54:02,907 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-16 10:54:02,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 4032 events. 246/4032 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 39545 event pairs, 15 based on Foata normal form. 0/3382 useless extension candidates. Maximal degree in co-relation 3583. Up to 177 conditions per place. [2022-11-16 10:54:02,953 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 22 selfloop transitions, 6 changer transitions 0/315 dead transitions. [2022-11-16 10:54:02,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 315 transitions, 768 flow [2022-11-16 10:54:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1520 transitions. [2022-11-16 10:54:02,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9156626506024096 [2022-11-16 10:54:02,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1520 transitions. [2022-11-16 10:54:02,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1520 transitions. [2022-11-16 10:54:02,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:02,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1520 transitions. [2022-11-16 10:54:02,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,968 INFO L175 Difference]: Start difference. First operand has 309 places, 303 transitions, 684 flow. Second operand 5 states and 1520 transitions. [2022-11-16 10:54:02,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 315 transitions, 768 flow [2022-11-16 10:54:02,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 315 transitions, 754 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:02,976 INFO L231 Difference]: Finished difference. Result has 311 places, 306 transitions, 706 flow [2022-11-16 10:54:02,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=311, PETRI_TRANSITIONS=306} [2022-11-16 10:54:02,978 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 14 predicate places. [2022-11-16 10:54:02,978 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 306 transitions, 706 flow [2022-11-16 10:54:02,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:02,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:02,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:02,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 10:54:02,980 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:02,981 INFO L85 PathProgramCache]: Analyzing trace with hash 127108922, now seen corresponding path program 1 times [2022-11-16 10:54:02,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:02,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753160858] [2022-11-16 10:54:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:02,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:03,089 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 10:54:03,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:03,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753160858] [2022-11-16 10:54:03,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753160858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:03,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:03,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:03,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476819323] [2022-11-16 10:54:03,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:03,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:54:03,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:03,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:54:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 10:54:03,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-16 10:54:03,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 306 transitions, 706 flow. Second operand has 5 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:03,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-16 10:54:03,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:03,484 INFO L130 PetriNetUnfolder]: 45/1290 cut-off events. [2022-11-16 10:54:03,484 INFO L131 PetriNetUnfolder]: For 57/65 co-relation queries the response was YES. [2022-11-16 10:54:03,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 1290 events. 45/1290 cut-off events. For 57/65 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8306 event pairs, 0 based on Foata normal form. 0/1110 useless extension candidates. Maximal degree in co-relation 1320. Up to 41 conditions per place. [2022-11-16 10:54:03,515 INFO L137 encePairwiseOnDemand]: 327/332 looper letters, 21 selfloop transitions, 4 changer transitions 0/308 dead transitions. [2022-11-16 10:54:03,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 308 transitions, 760 flow [2022-11-16 10:54:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1515 transitions. [2022-11-16 10:54:03,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9126506024096386 [2022-11-16 10:54:03,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1515 transitions. [2022-11-16 10:54:03,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1515 transitions. [2022-11-16 10:54:03,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:03,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1515 transitions. [2022-11-16 10:54:03,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,528 INFO L175 Difference]: Start difference. First operand has 311 places, 306 transitions, 706 flow. Second operand 5 states and 1515 transitions. [2022-11-16 10:54:03,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 308 transitions, 760 flow [2022-11-16 10:54:03,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 308 transitions, 756 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:03,536 INFO L231 Difference]: Finished difference. Result has 315 places, 306 transitions, 714 flow [2022-11-16 10:54:03,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=315, PETRI_TRANSITIONS=306} [2022-11-16 10:54:03,537 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 18 predicate places. [2022-11-16 10:54:03,537 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 306 transitions, 714 flow [2022-11-16 10:54:03,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:03,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:03,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:03,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:54:03,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:03,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1290018398, now seen corresponding path program 1 times [2022-11-16 10:54:03,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:03,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813176820] [2022-11-16 10:54:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:03,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:03,733 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 10:54:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813176820] [2022-11-16 10:54:03,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813176820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717019741] [2022-11-16 10:54:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:03,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:03,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:03,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:03,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:54:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:03,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 10:54:03,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:04,028 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 10:54:04,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:04,125 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 10:54:04,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717019741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:04,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:04,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-16 10:54:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892438529] [2022-11-16 10:54:04,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:04,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 10:54:04,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:04,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 10:54:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:54:04,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-11-16 10:54:04,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 306 transitions, 714 flow. Second operand has 14 states, 14 states have (on average 296.85714285714283) internal successors, (4156), 14 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:04,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-11-16 10:54:04,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:04,513 INFO L130 PetriNetUnfolder]: 23/706 cut-off events. [2022-11-16 10:54:04,513 INFO L131 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2022-11-16 10:54:04,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 706 events. 23/706 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3194 event pairs, 0 based on Foata normal form. 2/620 useless extension candidates. Maximal degree in co-relation 716. Up to 19 conditions per place. [2022-11-16 10:54:04,525 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 27 selfloop transitions, 13 changer transitions 0/315 dead transitions. [2022-11-16 10:54:04,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 315 transitions, 816 flow [2022-11-16 10:54:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 10:54:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 10:54:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3270 transitions. [2022-11-16 10:54:04,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8953997809419496 [2022-11-16 10:54:04,536 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3270 transitions. [2022-11-16 10:54:04,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3270 transitions. [2022-11-16 10:54:04,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:04,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3270 transitions. [2022-11-16 10:54:04,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 297.27272727272725) internal successors, (3270), 11 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,560 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,561 INFO L175 Difference]: Start difference. First operand has 315 places, 306 transitions, 714 flow. Second operand 11 states and 3270 transitions. [2022-11-16 10:54:04,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 315 transitions, 816 flow [2022-11-16 10:54:04,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 315 transitions, 808 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:04,570 INFO L231 Difference]: Finished difference. Result has 324 places, 307 transitions, 753 flow [2022-11-16 10:54:04,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=753, PETRI_PLACES=324, PETRI_TRANSITIONS=307} [2022-11-16 10:54:04,572 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 27 predicate places. [2022-11-16 10:54:04,572 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 307 transitions, 753 flow [2022-11-16 10:54:04,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 296.85714285714283) internal successors, (4156), 14 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:04,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:04,575 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:04,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:04,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 10:54:04,781 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:04,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:04,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1532116904, now seen corresponding path program 2 times [2022-11-16 10:54:04,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:04,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343216365] [2022-11-16 10:54:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:04,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 10:54:05,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:05,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343216365] [2022-11-16 10:54:05,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343216365] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:05,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574929673] [2022-11-16 10:54:05,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:54:05,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:05,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:05,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:05,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:54:05,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:54:05,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:54:05,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:05,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 10:54:05,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 10:54:05,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574929673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:05,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:05,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-16 10:54:05,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396271620] [2022-11-16 10:54:05,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:05,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 10:54:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 10:54:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-16 10:54:05,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-11-16 10:54:05,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 307 transitions, 753 flow. Second operand has 17 states, 17 states have (on average 297.94117647058823) internal successors, (5065), 17 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:05,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:05,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-11-16 10:54:05,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:06,024 INFO L130 PetriNetUnfolder]: 11/396 cut-off events. [2022-11-16 10:54:06,024 INFO L131 PetriNetUnfolder]: For 43/45 co-relation queries the response was YES. [2022-11-16 10:54:06,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 396 events. 11/396 cut-off events. For 43/45 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1040 event pairs, 0 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 484. Up to 6 conditions per place. [2022-11-16 10:54:06,031 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 19 selfloop transitions, 13 changer transitions 0/307 dead transitions. [2022-11-16 10:54:06,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 307 transitions, 786 flow [2022-11-16 10:54:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 10:54:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 10:54:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4443 transitions. [2022-11-16 10:54:06,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8921686746987951 [2022-11-16 10:54:06,042 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4443 transitions. [2022-11-16 10:54:06,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4443 transitions. [2022-11-16 10:54:06,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:06,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4443 transitions. [2022-11-16 10:54:06,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 296.2) internal successors, (4443), 15 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,065 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,066 INFO L175 Difference]: Start difference. First operand has 324 places, 307 transitions, 753 flow. Second operand 15 states and 4443 transitions. [2022-11-16 10:54:06,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 307 transitions, 786 flow [2022-11-16 10:54:06,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 307 transitions, 741 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-16 10:54:06,073 INFO L231 Difference]: Finished difference. Result has 319 places, 300 transitions, 691 flow [2022-11-16 10:54:06,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=691, PETRI_PLACES=319, PETRI_TRANSITIONS=300} [2022-11-16 10:54:06,074 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 22 predicate places. [2022-11-16 10:54:06,074 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 300 transitions, 691 flow [2022-11-16 10:54:06,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 297.94117647058823) internal successors, (5065), 17 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:06,077 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:06,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 10:54:06,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 10:54:06,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:06,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1433410082, now seen corresponding path program 2 times [2022-11-16 10:54:06,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:06,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867637768] [2022-11-16 10:54:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:06,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:06,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:06,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867637768] [2022-11-16 10:54:06,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867637768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:06,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:06,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:06,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686212976] [2022-11-16 10:54:06,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:06,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:06,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:06,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:06,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:06,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-16 10:54:06,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 300 transitions, 691 flow. Second operand has 6 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:06,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:06,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-16 10:54:06,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:07,057 INFO L130 PetriNetUnfolder]: 318/2012 cut-off events. [2022-11-16 10:54:07,057 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-16 10:54:07,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 2012 events. 318/2012 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15782 event pairs, 46 based on Foata normal form. 0/1748 useless extension candidates. Maximal degree in co-relation 2754. Up to 440 conditions per place. [2022-11-16 10:54:07,075 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 44 selfloop transitions, 5 changer transitions 0/312 dead transitions. [2022-11-16 10:54:07,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 312 transitions, 816 flow [2022-11-16 10:54:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1712 transitions. [2022-11-16 10:54:07,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8594377510040161 [2022-11-16 10:54:07,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1712 transitions. [2022-11-16 10:54:07,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1712 transitions. [2022-11-16 10:54:07,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:07,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1712 transitions. [2022-11-16 10:54:07,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.3333333333333) internal successors, (1712), 6 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,092 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,092 INFO L175 Difference]: Start difference. First operand has 319 places, 300 transitions, 691 flow. Second operand 6 states and 1712 transitions. [2022-11-16 10:54:07,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 312 transitions, 816 flow [2022-11-16 10:54:07,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 312 transitions, 791 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-16 10:54:07,100 INFO L231 Difference]: Finished difference. Result has 311 places, 299 transitions, 674 flow [2022-11-16 10:54:07,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=674, PETRI_PLACES=311, PETRI_TRANSITIONS=299} [2022-11-16 10:54:07,102 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 14 predicate places. [2022-11-16 10:54:07,102 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 299 transitions, 674 flow [2022-11-16 10:54:07,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:07,103 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:07,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:54:07,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1486038735, now seen corresponding path program 1 times [2022-11-16 10:54:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:07,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952203524] [2022-11-16 10:54:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952203524] [2022-11-16 10:54:07,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952203524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:07,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:07,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364695295] [2022-11-16 10:54:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:07,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:07,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-16 10:54:07,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 299 transitions, 674 flow. Second operand has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:07,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-16 10:54:07,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:07,502 INFO L130 PetriNetUnfolder]: 85/1074 cut-off events. [2022-11-16 10:54:07,502 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-16 10:54:07,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 1074 events. 85/1074 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6481 event pairs, 24 based on Foata normal form. 0/932 useless extension candidates. Maximal degree in co-relation 1359. Up to 84 conditions per place. [2022-11-16 10:54:07,516 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 32 selfloop transitions, 4 changer transitions 0/310 dead transitions. [2022-11-16 10:54:07,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 310 transitions, 771 flow [2022-11-16 10:54:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1190 transitions. [2022-11-16 10:54:07,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8960843373493976 [2022-11-16 10:54:07,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1190 transitions. [2022-11-16 10:54:07,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1190 transitions. [2022-11-16 10:54:07,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:07,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1190 transitions. [2022-11-16 10:54:07,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.5) internal successors, (1190), 4 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,526 INFO L175 Difference]: Start difference. First operand has 311 places, 299 transitions, 674 flow. Second operand 4 states and 1190 transitions. [2022-11-16 10:54:07,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 310 transitions, 771 flow [2022-11-16 10:54:07,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 310 transitions, 762 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:07,533 INFO L231 Difference]: Finished difference. Result has 312 places, 300 transitions, 689 flow [2022-11-16 10:54:07,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=689, PETRI_PLACES=312, PETRI_TRANSITIONS=300} [2022-11-16 10:54:07,534 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 15 predicate places. [2022-11-16 10:54:07,534 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 300 transitions, 689 flow [2022-11-16 10:54:07,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:07,535 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:07,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:54:07,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:07,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1596674048, now seen corresponding path program 1 times [2022-11-16 10:54:07,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:07,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848229532] [2022-11-16 10:54:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:07,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:07,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848229532] [2022-11-16 10:54:07,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848229532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:07,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:07,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:07,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593721963] [2022-11-16 10:54:07,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:07,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:07,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:07,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-16 10:54:07,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 300 transitions, 689 flow. Second operand has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:07,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:07,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-16 10:54:07,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:08,095 INFO L130 PetriNetUnfolder]: 162/1689 cut-off events. [2022-11-16 10:54:08,095 INFO L131 PetriNetUnfolder]: For 128/134 co-relation queries the response was YES. [2022-11-16 10:54:08,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 1689 events. 162/1689 cut-off events. For 128/134 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13140 event pairs, 18 based on Foata normal form. 0/1377 useless extension candidates. Maximal degree in co-relation 2000. Up to 147 conditions per place. [2022-11-16 10:54:08,118 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 21 selfloop transitions, 6 changer transitions 0/311 dead transitions. [2022-11-16 10:54:08,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 311 transitions, 768 flow [2022-11-16 10:54:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1519 transitions. [2022-11-16 10:54:08,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150602409638554 [2022-11-16 10:54:08,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1519 transitions. [2022-11-16 10:54:08,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1519 transitions. [2022-11-16 10:54:08,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:08,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1519 transitions. [2022-11-16 10:54:08,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.8) internal successors, (1519), 5 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,132 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,132 INFO L175 Difference]: Start difference. First operand has 312 places, 300 transitions, 689 flow. Second operand 5 states and 1519 transitions. [2022-11-16 10:54:08,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 311 transitions, 768 flow [2022-11-16 10:54:08,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 311 transitions, 768 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:54:08,139 INFO L231 Difference]: Finished difference. Result has 319 places, 303 transitions, 725 flow [2022-11-16 10:54:08,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=319, PETRI_TRANSITIONS=303} [2022-11-16 10:54:08,141 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 22 predicate places. [2022-11-16 10:54:08,141 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 303 transitions, 725 flow [2022-11-16 10:54:08,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:08,142 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:08,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 10:54:08,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 569044688, now seen corresponding path program 1 times [2022-11-16 10:54:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:08,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714417377] [2022-11-16 10:54:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:08,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714417377] [2022-11-16 10:54:08,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714417377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:08,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:08,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:08,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688948092] [2022-11-16 10:54:08,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:08,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:08,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:08,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:08,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:08,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-16 10:54:08,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 303 transitions, 725 flow. Second operand has 6 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:08,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:08,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-16 10:54:08,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:09,441 INFO L130 PetriNetUnfolder]: 664/4235 cut-off events. [2022-11-16 10:54:09,441 INFO L131 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2022-11-16 10:54:09,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 4235 events. 664/4235 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 43115 event pairs, 92 based on Foata normal form. 0/3620 useless extension candidates. Maximal degree in co-relation 5841. Up to 930 conditions per place. [2022-11-16 10:54:09,475 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 43 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-16 10:54:09,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 314 transitions, 845 flow [2022-11-16 10:54:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1711 transitions. [2022-11-16 10:54:09,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8589357429718876 [2022-11-16 10:54:09,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1711 transitions. [2022-11-16 10:54:09,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1711 transitions. [2022-11-16 10:54:09,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:09,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1711 transitions. [2022-11-16 10:54:09,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.1666666666667) internal successors, (1711), 6 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,493 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,493 INFO L175 Difference]: Start difference. First operand has 319 places, 303 transitions, 725 flow. Second operand 6 states and 1711 transitions. [2022-11-16 10:54:09,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 314 transitions, 845 flow [2022-11-16 10:54:09,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 314 transitions, 841 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:09,502 INFO L231 Difference]: Finished difference. Result has 322 places, 302 transitions, 729 flow [2022-11-16 10:54:09,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=729, PETRI_PLACES=322, PETRI_TRANSITIONS=302} [2022-11-16 10:54:09,504 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 25 predicate places. [2022-11-16 10:54:09,504 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 302 transitions, 729 flow [2022-11-16 10:54:09,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:09,505 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:09,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 10:54:09,506 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash 460517087, now seen corresponding path program 1 times [2022-11-16 10:54:09,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:09,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851282512] [2022-11-16 10:54:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:09,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:09,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851282512] [2022-11-16 10:54:09,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851282512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:09,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:09,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527931567] [2022-11-16 10:54:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:09,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:09,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-16 10:54:09,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 302 transitions, 729 flow. Second operand has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:09,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:09,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-16 10:54:09,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:10,264 INFO L130 PetriNetUnfolder]: 370/1958 cut-off events. [2022-11-16 10:54:10,265 INFO L131 PetriNetUnfolder]: For 372/378 co-relation queries the response was YES. [2022-11-16 10:54:10,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 1958 events. 370/1958 cut-off events. For 372/378 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 19192 event pairs, 144 based on Foata normal form. 0/1462 useless extension candidates. Maximal degree in co-relation 2814. Up to 352 conditions per place. [2022-11-16 10:54:10,289 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 31 selfloop transitions, 4 changer transitions 0/312 dead transitions. [2022-11-16 10:54:10,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 312 transitions, 821 flow [2022-11-16 10:54:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1189 transitions. [2022-11-16 10:54:10,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8953313253012049 [2022-11-16 10:54:10,293 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1189 transitions. [2022-11-16 10:54:10,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1189 transitions. [2022-11-16 10:54:10,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:10,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1189 transitions. [2022-11-16 10:54:10,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,301 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,301 INFO L175 Difference]: Start difference. First operand has 322 places, 302 transitions, 729 flow. Second operand 4 states and 1189 transitions. [2022-11-16 10:54:10,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 312 transitions, 821 flow [2022-11-16 10:54:10,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 312 transitions, 812 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:10,309 INFO L231 Difference]: Finished difference. Result has 323 places, 303 transitions, 744 flow [2022-11-16 10:54:10,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=323, PETRI_TRANSITIONS=303} [2022-11-16 10:54:10,310 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 26 predicate places. [2022-11-16 10:54:10,310 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 303 transitions, 744 flow [2022-11-16 10:54:10,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:10,311 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:10,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 10:54:10,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:10,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:10,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1256828441, now seen corresponding path program 1 times [2022-11-16 10:54:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:10,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810918469] [2022-11-16 10:54:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:10,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:10,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:10,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810918469] [2022-11-16 10:54:10,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810918469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:10,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:10,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741898647] [2022-11-16 10:54:10,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:10,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:10,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:10,411 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-16 10:54:10,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 303 transitions, 744 flow. Second operand has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:10,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:10,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-16 10:54:10,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:10,999 INFO L130 PetriNetUnfolder]: 86/1865 cut-off events. [2022-11-16 10:54:10,999 INFO L131 PetriNetUnfolder]: For 98/100 co-relation queries the response was YES. [2022-11-16 10:54:11,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1865 events. 86/1865 cut-off events. For 98/100 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 13234 event pairs, 24 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 2354. Up to 79 conditions per place. [2022-11-16 10:54:11,031 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 32 selfloop transitions, 3 changer transitions 0/312 dead transitions. [2022-11-16 10:54:11,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 312 transitions, 831 flow [2022-11-16 10:54:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1188 transitions. [2022-11-16 10:54:11,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8945783132530121 [2022-11-16 10:54:11,036 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1188 transitions. [2022-11-16 10:54:11,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1188 transitions. [2022-11-16 10:54:11,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:11,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1188 transitions. [2022-11-16 10:54:11,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,044 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,044 INFO L175 Difference]: Start difference. First operand has 323 places, 303 transitions, 744 flow. Second operand 4 states and 1188 transitions. [2022-11-16 10:54:11,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 312 transitions, 831 flow [2022-11-16 10:54:11,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 312 transitions, 829 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:11,053 INFO L231 Difference]: Finished difference. Result has 325 places, 302 transitions, 742 flow [2022-11-16 10:54:11,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=742, PETRI_PLACES=325, PETRI_TRANSITIONS=302} [2022-11-16 10:54:11,056 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 28 predicate places. [2022-11-16 10:54:11,057 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 302 transitions, 742 flow [2022-11-16 10:54:11,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:11,058 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:11,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 10:54:11,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash 306976875, now seen corresponding path program 1 times [2022-11-16 10:54:11,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:11,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300385290] [2022-11-16 10:54:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:11,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:11,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:11,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300385290] [2022-11-16 10:54:11,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300385290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:11,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:11,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:11,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053294960] [2022-11-16 10:54:11,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:11,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:11,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:11,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:11,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-16 10:54:11,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 302 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:11,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:11,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-16 10:54:11,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:12,468 INFO L130 PetriNetUnfolder]: 561/4525 cut-off events. [2022-11-16 10:54:12,469 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-11-16 10:54:12,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6269 conditions, 4525 events. 561/4525 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 45551 event pairs, 70 based on Foata normal form. 0/4058 useless extension candidates. Maximal degree in co-relation 6249. Up to 848 conditions per place. [2022-11-16 10:54:12,533 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 42 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-16 10:54:12,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 314 transitions, 863 flow [2022-11-16 10:54:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1710 transitions. [2022-11-16 10:54:12,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858433734939759 [2022-11-16 10:54:12,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1710 transitions. [2022-11-16 10:54:12,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1710 transitions. [2022-11-16 10:54:12,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:12,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1710 transitions. [2022-11-16 10:54:12,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,552 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,552 INFO L175 Difference]: Start difference. First operand has 325 places, 302 transitions, 742 flow. Second operand 6 states and 1710 transitions. [2022-11-16 10:54:12,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 314 transitions, 863 flow [2022-11-16 10:54:12,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 314 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:12,563 INFO L231 Difference]: Finished difference. Result has 327 places, 301 transitions, 745 flow [2022-11-16 10:54:12,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=327, PETRI_TRANSITIONS=301} [2022-11-16 10:54:12,565 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 30 predicate places. [2022-11-16 10:54:12,565 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 301 transitions, 745 flow [2022-11-16 10:54:12,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:12,566 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:12,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 10:54:12,567 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash -928316752, now seen corresponding path program 1 times [2022-11-16 10:54:12,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129096778] [2022-11-16 10:54:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:12,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:12,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129096778] [2022-11-16 10:54:12,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129096778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:12,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:12,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017559612] [2022-11-16 10:54:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:12,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:12,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-16 10:54:12,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 301 transitions, 745 flow. Second operand has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:12,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:12,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-16 10:54:12,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:13,355 INFO L130 PetriNetUnfolder]: 98/1967 cut-off events. [2022-11-16 10:54:13,355 INFO L131 PetriNetUnfolder]: For 66/68 co-relation queries the response was YES. [2022-11-16 10:54:13,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 1967 events. 98/1967 cut-off events. For 66/68 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 14493 event pairs, 36 based on Foata normal form. 4/1759 useless extension candidates. Maximal degree in co-relation 2523. Up to 117 conditions per place. [2022-11-16 10:54:13,380 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 29 selfloop transitions, 3 changer transitions 0/310 dead transitions. [2022-11-16 10:54:13,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 310 transitions, 828 flow [2022-11-16 10:54:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:13,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1185 transitions. [2022-11-16 10:54:13,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8923192771084337 [2022-11-16 10:54:13,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1185 transitions. [2022-11-16 10:54:13,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1185 transitions. [2022-11-16 10:54:13,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:13,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1185 transitions. [2022-11-16 10:54:13,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:13,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:13,390 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:13,391 INFO L175 Difference]: Start difference. First operand has 327 places, 301 transitions, 745 flow. Second operand 4 states and 1185 transitions. [2022-11-16 10:54:13,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 310 transitions, 828 flow [2022-11-16 10:54:13,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 310 transitions, 817 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:13,398 INFO L231 Difference]: Finished difference. Result has 325 places, 301 transitions, 743 flow [2022-11-16 10:54:13,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=743, PETRI_PLACES=325, PETRI_TRANSITIONS=301} [2022-11-16 10:54:13,400 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 28 predicate places. [2022-11-16 10:54:13,400 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 301 transitions, 743 flow [2022-11-16 10:54:13,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:13,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:13,401 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:13,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 10:54:13,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash 815556039, now seen corresponding path program 1 times [2022-11-16 10:54:13,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:13,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251625479] [2022-11-16 10:54:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:13,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:13,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:13,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251625479] [2022-11-16 10:54:13,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251625479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:13,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:13,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:13,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219083219] [2022-11-16 10:54:13,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:13,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:13,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:13,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:13,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-16 10:54:13,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 301 transitions, 743 flow. Second operand has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:13,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:13,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-16 10:54:13,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:14,149 INFO L130 PetriNetUnfolder]: 468/2420 cut-off events. [2022-11-16 10:54:14,149 INFO L131 PetriNetUnfolder]: For 656/664 co-relation queries the response was YES. [2022-11-16 10:54:14,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 2420 events. 468/2420 cut-off events. For 656/664 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 25052 event pairs, 192 based on Foata normal form. 18/1816 useless extension candidates. Maximal degree in co-relation 3669. Up to 456 conditions per place. [2022-11-16 10:54:14,189 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 31 selfloop transitions, 3 changer transitions 0/309 dead transitions. [2022-11-16 10:54:14,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 309 transitions, 825 flow [2022-11-16 10:54:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2022-11-16 10:54:14,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8938253012048193 [2022-11-16 10:54:14,193 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2022-11-16 10:54:14,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2022-11-16 10:54:14,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:14,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2022-11-16 10:54:14,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,199 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,200 INFO L175 Difference]: Start difference. First operand has 325 places, 301 transitions, 743 flow. Second operand 4 states and 1187 transitions. [2022-11-16 10:54:14,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 309 transitions, 825 flow [2022-11-16 10:54:14,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 309 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:14,208 INFO L231 Difference]: Finished difference. Result has 326 places, 300 transitions, 739 flow [2022-11-16 10:54:14,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=739, PETRI_PLACES=326, PETRI_TRANSITIONS=300} [2022-11-16 10:54:14,209 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 29 predicate places. [2022-11-16 10:54:14,210 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 300 transitions, 739 flow [2022-11-16 10:54:14,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:14,211 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:14,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 10:54:14,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash -487565603, now seen corresponding path program 1 times [2022-11-16 10:54:14,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:14,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334475286] [2022-11-16 10:54:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:14,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:14,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334475286] [2022-11-16 10:54:14,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334475286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:14,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:14,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:54:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898112703] [2022-11-16 10:54:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:14,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:14,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-16 10:54:14,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 300 transitions, 739 flow. Second operand has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:14,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:14,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-16 10:54:14,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:15,669 INFO L130 PetriNetUnfolder]: 864/6027 cut-off events. [2022-11-16 10:54:15,670 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2022-11-16 10:54:15,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8579 conditions, 6027 events. 864/6027 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 68650 event pairs, 104 based on Foata normal form. 0/5221 useless extension candidates. Maximal degree in co-relation 8559. Up to 1354 conditions per place. [2022-11-16 10:54:15,736 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 41 selfloop transitions, 5 changer transitions 0/311 dead transitions. [2022-11-16 10:54:15,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 311 transitions, 855 flow [2022-11-16 10:54:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 10:54:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 10:54:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2022-11-16 10:54:15,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8579317269076305 [2022-11-16 10:54:15,744 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1709 transitions. [2022-11-16 10:54:15,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1709 transitions. [2022-11-16 10:54:15,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:15,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1709 transitions. [2022-11-16 10:54:15,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 6 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,760 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,761 INFO L175 Difference]: Start difference. First operand has 326 places, 300 transitions, 739 flow. Second operand 6 states and 1709 transitions. [2022-11-16 10:54:15,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 311 transitions, 855 flow [2022-11-16 10:54:15,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 311 transitions, 850 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:54:15,772 INFO L231 Difference]: Finished difference. Result has 328 places, 299 transitions, 742 flow [2022-11-16 10:54:15,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=328, PETRI_TRANSITIONS=299} [2022-11-16 10:54:15,773 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 31 predicate places. [2022-11-16 10:54:15,773 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 299 transitions, 742 flow [2022-11-16 10:54:15,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:15,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:15,774 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:15,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 10:54:15,775 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:15,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:15,775 INFO L85 PathProgramCache]: Analyzing trace with hash 162595504, now seen corresponding path program 1 times [2022-11-16 10:54:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:15,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53241488] [2022-11-16 10:54:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:15,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:16,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:16,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53241488] [2022-11-16 10:54:16,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53241488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:16,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:16,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470978129] [2022-11-16 10:54:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:16,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:16,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:16,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-16 10:54:16,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 299 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:16,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:16,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-16 10:54:16,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:17,087 INFO L130 PetriNetUnfolder]: 795/5197 cut-off events. [2022-11-16 10:54:17,087 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2022-11-16 10:54:17,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7798 conditions, 5197 events. 795/5197 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 54775 event pairs, 70 based on Foata normal form. 0/4763 useless extension candidates. Maximal degree in co-relation 7778. Up to 786 conditions per place. [2022-11-16 10:54:17,140 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 57 selfloop transitions, 9 changer transitions 0/326 dead transitions. [2022-11-16 10:54:17,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 326 transitions, 941 flow [2022-11-16 10:54:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2243 transitions. [2022-11-16 10:54:17,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8445030120481928 [2022-11-16 10:54:17,145 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2243 transitions. [2022-11-16 10:54:17,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2243 transitions. [2022-11-16 10:54:17,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:17,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2243 transitions. [2022-11-16 10:54:17,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.375) internal successors, (2243), 8 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,158 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,158 INFO L175 Difference]: Start difference. First operand has 328 places, 299 transitions, 742 flow. Second operand 8 states and 2243 transitions. [2022-11-16 10:54:17,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 326 transitions, 941 flow [2022-11-16 10:54:17,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 326 transitions, 924 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:17,170 INFO L231 Difference]: Finished difference. Result has 333 places, 300 transitions, 763 flow [2022-11-16 10:54:17,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=333, PETRI_TRANSITIONS=300} [2022-11-16 10:54:17,172 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 36 predicate places. [2022-11-16 10:54:17,172 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 300 transitions, 763 flow [2022-11-16 10:54:17,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:17,173 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:17,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 10:54:17,174 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:17,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash 745494208, now seen corresponding path program 1 times [2022-11-16 10:54:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:17,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548457582] [2022-11-16 10:54:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:17,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548457582] [2022-11-16 10:54:17,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548457582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:17,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:17,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:17,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30730031] [2022-11-16 10:54:17,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:17,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:17,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:17,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-16 10:54:17,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 300 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:17,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:17,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-16 10:54:17,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:18,537 INFO L130 PetriNetUnfolder]: 687/5049 cut-off events. [2022-11-16 10:54:18,537 INFO L131 PetriNetUnfolder]: For 404/404 co-relation queries the response was YES. [2022-11-16 10:54:18,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7518 conditions, 5049 events. 687/5049 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 52949 event pairs, 70 based on Foata normal form. 0/4675 useless extension candidates. Maximal degree in co-relation 7496. Up to 710 conditions per place. [2022-11-16 10:54:18,585 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 60 selfloop transitions, 9 changer transitions 0/329 dead transitions. [2022-11-16 10:54:18,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 329 transitions, 971 flow [2022-11-16 10:54:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2245 transitions. [2022-11-16 10:54:18,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8452560240963856 [2022-11-16 10:54:18,591 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2245 transitions. [2022-11-16 10:54:18,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2245 transitions. [2022-11-16 10:54:18,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:18,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2245 transitions. [2022-11-16 10:54:18,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.625) internal successors, (2245), 8 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,606 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,607 INFO L175 Difference]: Start difference. First operand has 333 places, 300 transitions, 763 flow. Second operand 8 states and 2245 transitions. [2022-11-16 10:54:18,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 329 transitions, 971 flow [2022-11-16 10:54:18,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 329 transitions, 962 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:18,621 INFO L231 Difference]: Finished difference. Result has 338 places, 301 transitions, 784 flow [2022-11-16 10:54:18,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=338, PETRI_TRANSITIONS=301} [2022-11-16 10:54:18,622 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 41 predicate places. [2022-11-16 10:54:18,622 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 301 transitions, 784 flow [2022-11-16 10:54:18,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:18,624 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:18,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 10:54:18,624 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash 20543650, now seen corresponding path program 1 times [2022-11-16 10:54:18,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:18,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752182702] [2022-11-16 10:54:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:18,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:18,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:18,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752182702] [2022-11-16 10:54:18,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752182702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:18,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:18,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:18,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599136824] [2022-11-16 10:54:18,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:18,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:18,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:18,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-16 10:54:18,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 301 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:18,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:18,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-16 10:54:18,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:19,480 INFO L130 PetriNetUnfolder]: 578/2900 cut-off events. [2022-11-16 10:54:19,480 INFO L131 PetriNetUnfolder]: For 641/649 co-relation queries the response was YES. [2022-11-16 10:54:19,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 2900 events. 578/2900 cut-off events. For 641/649 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 32471 event pairs, 288 based on Foata normal form. 18/2160 useless extension candidates. Maximal degree in co-relation 4450. Up to 623 conditions per place. [2022-11-16 10:54:19,503 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 28 selfloop transitions, 3 changer transitions 0/309 dead transitions. [2022-11-16 10:54:19,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 309 transitions, 862 flow [2022-11-16 10:54:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:54:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:54:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1184 transitions. [2022-11-16 10:54:19,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891566265060241 [2022-11-16 10:54:19,506 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1184 transitions. [2022-11-16 10:54:19,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1184 transitions. [2022-11-16 10:54:19,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:19,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1184 transitions. [2022-11-16 10:54:19,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,513 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,513 INFO L175 Difference]: Start difference. First operand has 338 places, 301 transitions, 784 flow. Second operand 4 states and 1184 transitions. [2022-11-16 10:54:19,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 309 transitions, 862 flow [2022-11-16 10:54:19,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 309 transitions, 851 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:19,521 INFO L231 Difference]: Finished difference. Result has 336 places, 301 transitions, 782 flow [2022-11-16 10:54:19,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=336, PETRI_TRANSITIONS=301} [2022-11-16 10:54:19,523 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 39 predicate places. [2022-11-16 10:54:19,523 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 301 transitions, 782 flow [2022-11-16 10:54:19,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:19,524 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:19,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 10:54:19,524 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1066628924, now seen corresponding path program 1 times [2022-11-16 10:54:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:19,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423348618] [2022-11-16 10:54:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:19,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:19,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423348618] [2022-11-16 10:54:19,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423348618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:19,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:19,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:54:19,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712869620] [2022-11-16 10:54:19,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:19,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:19,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:19,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 332 [2022-11-16 10:54:19,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 301 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:19,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:19,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 332 [2022-11-16 10:54:19,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:20,073 INFO L130 PetriNetUnfolder]: 66/849 cut-off events. [2022-11-16 10:54:20,073 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-16 10:54:20,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 849 events. 66/849 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4488 event pairs, 36 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 1294. Up to 117 conditions per place. [2022-11-16 10:54:20,084 INFO L137 encePairwiseOnDemand]: 319/332 looper letters, 51 selfloop transitions, 13 changer transitions 0/325 dead transitions. [2022-11-16 10:54:20,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 325 transitions, 967 flow [2022-11-16 10:54:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:54:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:54:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2549 transitions. [2022-11-16 10:54:20,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8530789825970548 [2022-11-16 10:54:20,090 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2549 transitions. [2022-11-16 10:54:20,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2549 transitions. [2022-11-16 10:54:20,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:20,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2549 transitions. [2022-11-16 10:54:20,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.22222222222223) internal successors, (2549), 9 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,103 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,103 INFO L175 Difference]: Start difference. First operand has 336 places, 301 transitions, 782 flow. Second operand 9 states and 2549 transitions. [2022-11-16 10:54:20,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 325 transitions, 967 flow [2022-11-16 10:54:20,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 325 transitions, 965 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:20,111 INFO L231 Difference]: Finished difference. Result has 348 places, 307 transitions, 850 flow [2022-11-16 10:54:20,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=850, PETRI_PLACES=348, PETRI_TRANSITIONS=307} [2022-11-16 10:54:20,113 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 51 predicate places. [2022-11-16 10:54:20,113 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 307 transitions, 850 flow [2022-11-16 10:54:20,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:20,114 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:20,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 10:54:20,115 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1861800013, now seen corresponding path program 1 times [2022-11-16 10:54:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:20,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653111016] [2022-11-16 10:54:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:20,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:20,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:20,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653111016] [2022-11-16 10:54:20,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653111016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:20,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430169014] [2022-11-16 10:54:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:20,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:20,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:20,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:20,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 10:54:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:20,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:20,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:20,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:20,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430169014] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:20,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:20,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 10:54:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497033996] [2022-11-16 10:54:20,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:54:20,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:20,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:54:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:54:20,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-16 10:54:20,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 307 transitions, 850 flow. Second operand has 12 states, 12 states have (on average 300.8333333333333) internal successors, (3610), 12 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:20,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:20,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-16 10:54:20,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:21,611 INFO L130 PetriNetUnfolder]: 51/2824 cut-off events. [2022-11-16 10:54:21,612 INFO L131 PetriNetUnfolder]: For 183/184 co-relation queries the response was YES. [2022-11-16 10:54:21,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3870 conditions, 2824 events. 51/2824 cut-off events. For 183/184 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 22781 event pairs, 3 based on Foata normal form. 6/2668 useless extension candidates. Maximal degree in co-relation 3841. Up to 69 conditions per place. [2022-11-16 10:54:21,652 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 50 selfloop transitions, 20 changer transitions 0/357 dead transitions. [2022-11-16 10:54:21,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 357 transitions, 1138 flow [2022-11-16 10:54:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 10:54:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 10:54:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5437 transitions. [2022-11-16 10:54:21,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909805890227577 [2022-11-16 10:54:21,663 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5437 transitions. [2022-11-16 10:54:21,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5437 transitions. [2022-11-16 10:54:21,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:21,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5437 transitions. [2022-11-16 10:54:21,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 302.05555555555554) internal successors, (5437), 18 states have internal predecessors, (5437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:21,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:21,687 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:21,688 INFO L175 Difference]: Start difference. First operand has 348 places, 307 transitions, 850 flow. Second operand 18 states and 5437 transitions. [2022-11-16 10:54:21,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 357 transitions, 1138 flow [2022-11-16 10:54:21,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 357 transitions, 1138 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:54:21,700 INFO L231 Difference]: Finished difference. Result has 369 places, 319 transitions, 962 flow [2022-11-16 10:54:21,700 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=962, PETRI_PLACES=369, PETRI_TRANSITIONS=319} [2022-11-16 10:54:21,701 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 72 predicate places. [2022-11-16 10:54:21,701 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 319 transitions, 962 flow [2022-11-16 10:54:21,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 300.8333333333333) internal successors, (3610), 12 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:21,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:21,703 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:21,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:21,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:21,908 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1881224706, now seen corresponding path program 1 times [2022-11-16 10:54:21,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:21,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143037578] [2022-11-16 10:54:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:21,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:22,065 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:22,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:22,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143037578] [2022-11-16 10:54:22,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143037578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:22,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006057847] [2022-11-16 10:54:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:22,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:22,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:22,067 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:22,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 10:54:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:22,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:22,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:22,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:22,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006057847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:22,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:22,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:54:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909524776] [2022-11-16 10:54:22,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:22,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:22,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-16 10:54:22,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 319 transitions, 962 flow. Second operand has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:22,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-16 10:54:22,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:22,897 INFO L130 PetriNetUnfolder]: 43/1680 cut-off events. [2022-11-16 10:54:22,898 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2022-11-16 10:54:22,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2585 conditions, 1680 events. 43/1680 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 10346 event pairs, 0 based on Foata normal form. 8/1648 useless extension candidates. Maximal degree in co-relation 2552. Up to 71 conditions per place. [2022-11-16 10:54:22,936 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 25 selfloop transitions, 13 changer transitions 0/325 dead transitions. [2022-11-16 10:54:22,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 325 transitions, 1039 flow [2022-11-16 10:54:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2116 transitions. [2022-11-16 10:54:22,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104991394148021 [2022-11-16 10:54:22,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2116 transitions. [2022-11-16 10:54:22,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2116 transitions. [2022-11-16 10:54:22,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:22,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2116 transitions. [2022-11-16 10:54:22,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,950 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,951 INFO L175 Difference]: Start difference. First operand has 369 places, 319 transitions, 962 flow. Second operand 7 states and 2116 transitions. [2022-11-16 10:54:22,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 325 transitions, 1039 flow [2022-11-16 10:54:22,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 325 transitions, 1003 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:22,964 INFO L231 Difference]: Finished difference. Result has 365 places, 315 transitions, 925 flow [2022-11-16 10:54:22,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=925, PETRI_PLACES=365, PETRI_TRANSITIONS=315} [2022-11-16 10:54:22,965 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 68 predicate places. [2022-11-16 10:54:22,965 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 315 transitions, 925 flow [2022-11-16 10:54:22,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:22,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:22,967 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:22,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 10:54:23,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:23,174 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:23,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -914602078, now seen corresponding path program 1 times [2022-11-16 10:54:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:23,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107055335] [2022-11-16 10:54:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:23,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:23,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107055335] [2022-11-16 10:54:23,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107055335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:23,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:23,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:23,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547656973] [2022-11-16 10:54:23,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:23,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:23,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-16 10:54:23,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 315 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:23,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:23,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-16 10:54:23,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:27,323 INFO L130 PetriNetUnfolder]: 2629/14411 cut-off events. [2022-11-16 10:54:27,323 INFO L131 PetriNetUnfolder]: For 2135/2135 co-relation queries the response was YES. [2022-11-16 10:54:27,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22811 conditions, 14411 events. 2629/14411 cut-off events. For 2135/2135 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 187670 event pairs, 214 based on Foata normal form. 0/12915 useless extension candidates. Maximal degree in co-relation 22779. Up to 2412 conditions per place. [2022-11-16 10:54:27,464 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 56 selfloop transitions, 9 changer transitions 0/341 dead transitions. [2022-11-16 10:54:27,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 341 transitions, 1111 flow [2022-11-16 10:54:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2242 transitions. [2022-11-16 10:54:27,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441265060240963 [2022-11-16 10:54:27,470 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2242 transitions. [2022-11-16 10:54:27,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2242 transitions. [2022-11-16 10:54:27,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:27,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2242 transitions. [2022-11-16 10:54:27,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.25) internal successors, (2242), 8 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,480 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,481 INFO L175 Difference]: Start difference. First operand has 365 places, 315 transitions, 925 flow. Second operand 8 states and 2242 transitions. [2022-11-16 10:54:27,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 341 transitions, 1111 flow [2022-11-16 10:54:27,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 341 transitions, 1093 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:27,517 INFO L231 Difference]: Finished difference. Result has 369 places, 316 transitions, 937 flow [2022-11-16 10:54:27,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=369, PETRI_TRANSITIONS=316} [2022-11-16 10:54:27,518 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 72 predicate places. [2022-11-16 10:54:27,518 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 316 transitions, 937 flow [2022-11-16 10:54:27,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:27,519 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:27,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 10:54:27,520 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1712107630, now seen corresponding path program 1 times [2022-11-16 10:54:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:27,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041572526] [2022-11-16 10:54:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:27,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:27,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:27,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041572526] [2022-11-16 10:54:27,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041572526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:27,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:27,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:27,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075020093] [2022-11-16 10:54:27,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:27,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 10:54:27,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:27,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 10:54:27,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:27,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-16 10:54:27,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 316 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 274.5) internal successors, (2196), 8 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:27,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:27,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-16 10:54:27,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:31,144 INFO L130 PetriNetUnfolder]: 2233/13879 cut-off events. [2022-11-16 10:54:31,144 INFO L131 PetriNetUnfolder]: For 2505/2505 co-relation queries the response was YES. [2022-11-16 10:54:31,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22399 conditions, 13879 events. 2233/13879 cut-off events. For 2505/2505 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 178004 event pairs, 214 based on Foata normal form. 0/12675 useless extension candidates. Maximal degree in co-relation 22365. Up to 2144 conditions per place. [2022-11-16 10:54:31,297 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 59 selfloop transitions, 9 changer transitions 0/344 dead transitions. [2022-11-16 10:54:31,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 344 transitions, 1140 flow [2022-11-16 10:54:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:31,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2244 transitions. [2022-11-16 10:54:31,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8448795180722891 [2022-11-16 10:54:31,302 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2244 transitions. [2022-11-16 10:54:31,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2244 transitions. [2022-11-16 10:54:31,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:31,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2244 transitions. [2022-11-16 10:54:31,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.5) internal successors, (2244), 8 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:31,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:31,316 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:31,316 INFO L175 Difference]: Start difference. First operand has 369 places, 316 transitions, 937 flow. Second operand 8 states and 2244 transitions. [2022-11-16 10:54:31,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 344 transitions, 1140 flow [2022-11-16 10:54:31,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 344 transitions, 1131 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:31,381 INFO L231 Difference]: Finished difference. Result has 374 places, 317 transitions, 958 flow [2022-11-16 10:54:31,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=958, PETRI_PLACES=374, PETRI_TRANSITIONS=317} [2022-11-16 10:54:31,382 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 77 predicate places. [2022-11-16 10:54:31,382 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 317 transitions, 958 flow [2022-11-16 10:54:31,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.5) internal successors, (2196), 8 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:31,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:31,384 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:31,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 10:54:31,384 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash 135936754, now seen corresponding path program 1 times [2022-11-16 10:54:31,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:31,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775842427] [2022-11-16 10:54:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:31,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:31,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:31,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775842427] [2022-11-16 10:54:31,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775842427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:31,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:31,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 10:54:31,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403207265] [2022-11-16 10:54:31,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:31,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:31,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:31,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:31,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:54:31,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 332 [2022-11-16 10:54:31,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 317 transitions, 958 flow. Second operand has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:31,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:31,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 332 [2022-11-16 10:54:31,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:33,209 INFO L130 PetriNetUnfolder]: 1090/5125 cut-off events. [2022-11-16 10:54:33,209 INFO L131 PetriNetUnfolder]: For 1515/1532 co-relation queries the response was YES. [2022-11-16 10:54:33,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8670 conditions, 5125 events. 1090/5125 cut-off events. For 1515/1532 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 62249 event pairs, 646 based on Foata normal form. 0/3998 useless extension candidates. Maximal degree in co-relation 8634. Up to 1282 conditions per place. [2022-11-16 10:54:33,254 INFO L137 encePairwiseOnDemand]: 319/332 looper letters, 43 selfloop transitions, 13 changer transitions 6/339 dead transitions. [2022-11-16 10:54:33,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 339 transitions, 1133 flow [2022-11-16 10:54:33,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:54:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:54:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2547 transitions. [2022-11-16 10:54:33,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8524096385542169 [2022-11-16 10:54:33,260 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2547 transitions. [2022-11-16 10:54:33,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2547 transitions. [2022-11-16 10:54:33,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:33,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2547 transitions. [2022-11-16 10:54:33,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.0) internal successors, (2547), 9 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:33,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:33,272 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:33,273 INFO L175 Difference]: Start difference. First operand has 374 places, 317 transitions, 958 flow. Second operand 9 states and 2547 transitions. [2022-11-16 10:54:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 339 transitions, 1133 flow [2022-11-16 10:54:33,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 339 transitions, 1124 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:54:33,290 INFO L231 Difference]: Finished difference. Result has 383 places, 323 transitions, 1019 flow [2022-11-16 10:54:33,290 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1019, PETRI_PLACES=383, PETRI_TRANSITIONS=323} [2022-11-16 10:54:33,291 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 86 predicate places. [2022-11-16 10:54:33,291 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 323 transitions, 1019 flow [2022-11-16 10:54:33,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:33,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:33,292 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:33,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 10:54:33,293 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash -659234335, now seen corresponding path program 1 times [2022-11-16 10:54:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:33,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138829378] [2022-11-16 10:54:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:33,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:33,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:33,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138829378] [2022-11-16 10:54:33,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138829378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:33,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848193700] [2022-11-16 10:54:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:33,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:33,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:33,444 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:33,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 10:54:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:33,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:33,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:33,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:33,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848193700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:33,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:33,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 10:54:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351039451] [2022-11-16 10:54:33,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:54:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:54:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:54:33,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-16 10:54:33,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 323 transitions, 1019 flow. Second operand has 12 states, 12 states have (on average 300.9166666666667) internal successors, (3611), 12 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:33,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:33,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-16 10:54:33,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:37,702 INFO L130 PetriNetUnfolder]: 767/12066 cut-off events. [2022-11-16 10:54:37,702 INFO L131 PetriNetUnfolder]: For 2136/2153 co-relation queries the response was YES. [2022-11-16 10:54:37,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19053 conditions, 12066 events. 767/12066 cut-off events. For 2136/2153 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 156559 event pairs, 51 based on Foata normal form. 54/11550 useless extension candidates. Maximal degree in co-relation 19013. Up to 765 conditions per place. [2022-11-16 10:54:37,847 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 46 selfloop transitions, 20 changer transitions 0/369 dead transitions. [2022-11-16 10:54:37,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 369 transitions, 1287 flow [2022-11-16 10:54:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 10:54:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 10:54:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5433 transitions. [2022-11-16 10:54:37,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9091365461847389 [2022-11-16 10:54:37,857 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5433 transitions. [2022-11-16 10:54:37,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5433 transitions. [2022-11-16 10:54:37,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:37,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5433 transitions. [2022-11-16 10:54:37,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 301.8333333333333) internal successors, (5433), 18 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:37,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:37,881 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:37,882 INFO L175 Difference]: Start difference. First operand has 383 places, 323 transitions, 1019 flow. Second operand 18 states and 5433 transitions. [2022-11-16 10:54:37,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 369 transitions, 1287 flow [2022-11-16 10:54:37,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 369 transitions, 1287 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:54:37,950 INFO L231 Difference]: Finished difference. Result has 404 places, 335 transitions, 1131 flow [2022-11-16 10:54:37,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1131, PETRI_PLACES=404, PETRI_TRANSITIONS=335} [2022-11-16 10:54:37,951 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 107 predicate places. [2022-11-16 10:54:37,951 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 335 transitions, 1131 flow [2022-11-16 10:54:37,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 300.9166666666667) internal successors, (3611), 12 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:37,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:37,953 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:37,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 10:54:38,160 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:38,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1038573040, now seen corresponding path program 1 times [2022-11-16 10:54:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:38,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076445788] [2022-11-16 10:54:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:38,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:38,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076445788] [2022-11-16 10:54:38,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076445788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:38,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942795307] [2022-11-16 10:54:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:38,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:38,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:38,420 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:38,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 10:54:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:38,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:38,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:38,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:38,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942795307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:38,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:38,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:54:38,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261133672] [2022-11-16 10:54:38,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:38,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:38,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:38,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:38,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:38,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-16 10:54:38,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 335 transitions, 1131 flow. Second operand has 6 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:38,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:38,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-16 10:54:38,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:42,278 INFO L130 PetriNetUnfolder]: 699/11926 cut-off events. [2022-11-16 10:54:42,278 INFO L131 PetriNetUnfolder]: For 2836/2853 co-relation queries the response was YES. [2022-11-16 10:54:42,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19212 conditions, 11926 events. 699/11926 cut-off events. For 2836/2853 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 152216 event pairs, 51 based on Foata normal form. 72/11356 useless extension candidates. Maximal degree in co-relation 19168. Up to 697 conditions per place. [2022-11-16 10:54:42,424 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 24 selfloop transitions, 13 changer transitions 0/340 dead transitions. [2022-11-16 10:54:42,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 340 transitions, 1203 flow [2022-11-16 10:54:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:42,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2115 transitions. [2022-11-16 10:54:42,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9100688468158348 [2022-11-16 10:54:42,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2115 transitions. [2022-11-16 10:54:42,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2115 transitions. [2022-11-16 10:54:42,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:42,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2115 transitions. [2022-11-16 10:54:42,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.14285714285717) internal successors, (2115), 7 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:42,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:42,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:42,437 INFO L175 Difference]: Start difference. First operand has 404 places, 335 transitions, 1131 flow. Second operand 7 states and 2115 transitions. [2022-11-16 10:54:42,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 340 transitions, 1203 flow [2022-11-16 10:54:42,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 340 transitions, 1167 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:42,511 INFO L231 Difference]: Finished difference. Result has 400 places, 331 transitions, 1094 flow [2022-11-16 10:54:42,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1094, PETRI_PLACES=400, PETRI_TRANSITIONS=331} [2022-11-16 10:54:42,512 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 103 predicate places. [2022-11-16 10:54:42,512 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 331 transitions, 1094 flow [2022-11-16 10:54:42,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:42,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:42,513 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:42,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:42,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 10:54:42,720 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash 156945189, now seen corresponding path program 1 times [2022-11-16 10:54:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:42,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243150092] [2022-11-16 10:54:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:43,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:43,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243150092] [2022-11-16 10:54:43,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243150092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:43,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869595115] [2022-11-16 10:54:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:43,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:43,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:43,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:43,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 10:54:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:43,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:54:43,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 10:54:43,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:43,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869595115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:43,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:43,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-16 10:54:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479843275] [2022-11-16 10:54:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:43,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:43,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:43,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:54:43,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-16 10:54:43,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 331 transitions, 1094 flow. Second operand has 6 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:43,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:43,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-16 10:54:43,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:45,279 INFO L130 PetriNetUnfolder]: 271/3373 cut-off events. [2022-11-16 10:54:45,279 INFO L131 PetriNetUnfolder]: For 501/501 co-relation queries the response was YES. [2022-11-16 10:54:45,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6007 conditions, 3373 events. 271/3373 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 28626 event pairs, 198 based on Foata normal form. 8/3355 useless extension candidates. Maximal degree in co-relation 5964. Up to 602 conditions per place. [2022-11-16 10:54:45,365 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 58 selfloop transitions, 6 changer transitions 0/345 dead transitions. [2022-11-16 10:54:45,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 345 transitions, 1261 flow [2022-11-16 10:54:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2203 transitions. [2022-11-16 10:54:45,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294427710843374 [2022-11-16 10:54:45,370 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2203 transitions. [2022-11-16 10:54:45,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2203 transitions. [2022-11-16 10:54:45,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:45,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2203 transitions. [2022-11-16 10:54:45,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 275.375) internal successors, (2203), 8 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:45,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:45,381 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:45,381 INFO L175 Difference]: Start difference. First operand has 400 places, 331 transitions, 1094 flow. Second operand 8 states and 2203 transitions. [2022-11-16 10:54:45,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 345 transitions, 1261 flow [2022-11-16 10:54:45,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 345 transitions, 1241 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 10:54:45,401 INFO L231 Difference]: Finished difference. Result has 403 places, 333 transitions, 1100 flow [2022-11-16 10:54:45,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1100, PETRI_PLACES=403, PETRI_TRANSITIONS=333} [2022-11-16 10:54:45,403 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 106 predicate places. [2022-11-16 10:54:45,404 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 333 transitions, 1100 flow [2022-11-16 10:54:45,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:45,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:45,405 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:45,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:45,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 10:54:45,611 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash 383004182, now seen corresponding path program 1 times [2022-11-16 10:54:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:45,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790191281] [2022-11-16 10:54:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:45,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:45,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790191281] [2022-11-16 10:54:45,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790191281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:45,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724301982] [2022-11-16 10:54:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:45,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:45,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:45,977 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:46,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 10:54:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:46,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:54:46,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 10:54:46,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:46,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724301982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:46,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:46,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-16 10:54:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633469201] [2022-11-16 10:54:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:46,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:54:46,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-16 10:54:46,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 333 transitions, 1100 flow. Second operand has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:46,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:46,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-16 10:54:46,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:47,991 INFO L130 PetriNetUnfolder]: 255/3349 cut-off events. [2022-11-16 10:54:47,991 INFO L131 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2022-11-16 10:54:48,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6018 conditions, 3349 events. 255/3349 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 28305 event pairs, 170 based on Foata normal form. 8/3331 useless extension candidates. Maximal degree in co-relation 5973. Up to 518 conditions per place. [2022-11-16 10:54:48,065 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 63 selfloop transitions, 8 changer transitions 0/352 dead transitions. [2022-11-16 10:54:48,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 352 transitions, 1307 flow [2022-11-16 10:54:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:54:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:54:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2475 transitions. [2022-11-16 10:54:48,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283132530120482 [2022-11-16 10:54:48,068 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2475 transitions. [2022-11-16 10:54:48,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2475 transitions. [2022-11-16 10:54:48,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:48,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2475 transitions. [2022-11-16 10:54:48,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,075 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,075 INFO L175 Difference]: Start difference. First operand has 403 places, 333 transitions, 1100 flow. Second operand 9 states and 2475 transitions. [2022-11-16 10:54:48,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 352 transitions, 1307 flow [2022-11-16 10:54:48,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 352 transitions, 1295 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:48,092 INFO L231 Difference]: Finished difference. Result has 412 places, 337 transitions, 1134 flow [2022-11-16 10:54:48,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1134, PETRI_PLACES=412, PETRI_TRANSITIONS=337} [2022-11-16 10:54:48,093 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 115 predicate places. [2022-11-16 10:54:48,093 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 337 transitions, 1134 flow [2022-11-16 10:54:48,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:48,094 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:48,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:48,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:48,300 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:48,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash 413209171, now seen corresponding path program 1 times [2022-11-16 10:54:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383967600] [2022-11-16 10:54:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:48,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:48,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:48,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383967600] [2022-11-16 10:54:48,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383967600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:48,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661157107] [2022-11-16 10:54:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:48,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:48,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:48,524 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:48,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 10:54:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:48,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:54:48,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 10:54:48,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:48,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661157107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:48,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:48,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-16 10:54:48,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760477834] [2022-11-16 10:54:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:48,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:48,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:54:48,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-16 10:54:48,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 337 transitions, 1134 flow. Second operand has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:48,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:48,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-16 10:54:48,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:54,850 INFO L130 PetriNetUnfolder]: 4541/15637 cut-off events. [2022-11-16 10:54:54,850 INFO L131 PetriNetUnfolder]: For 6643/6677 co-relation queries the response was YES. [2022-11-16 10:54:55,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30568 conditions, 15637 events. 4541/15637 cut-off events. For 6643/6677 co-relation queries the response was YES. Maximal size of possible extension queue 3830. Compared 261306 event pairs, 3366 based on Foata normal form. 89/11467 useless extension candidates. Maximal degree in co-relation 30519. Up to 6950 conditions per place. [2022-11-16 10:54:55,064 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 51 selfloop transitions, 6 changer transitions 5/349 dead transitions. [2022-11-16 10:54:55,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 349 transitions, 1291 flow [2022-11-16 10:54:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2201 transitions. [2022-11-16 10:54:55,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8286897590361446 [2022-11-16 10:54:55,066 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2201 transitions. [2022-11-16 10:54:55,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2201 transitions. [2022-11-16 10:54:55,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:55,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2201 transitions. [2022-11-16 10:54:55,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 275.125) internal successors, (2201), 8 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,075 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,075 INFO L175 Difference]: Start difference. First operand has 412 places, 337 transitions, 1134 flow. Second operand 8 states and 2201 transitions. [2022-11-16 10:54:55,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 349 transitions, 1291 flow [2022-11-16 10:54:55,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 349 transitions, 1279 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:55,154 INFO L231 Difference]: Finished difference. Result has 418 places, 339 transitions, 1148 flow [2022-11-16 10:54:55,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1148, PETRI_PLACES=418, PETRI_TRANSITIONS=339} [2022-11-16 10:54:55,155 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 121 predicate places. [2022-11-16 10:54:55,155 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 339 transitions, 1148 flow [2022-11-16 10:54:55,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:55,156 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:55,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:55,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:55,363 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:54:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash -262746872, now seen corresponding path program 1 times [2022-11-16 10:54:55,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:55,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384548103] [2022-11-16 10:54:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:55,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:54:55,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:55,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384548103] [2022-11-16 10:54:55,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384548103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:55,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737894866] [2022-11-16 10:54:55,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:55,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:55,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:55,627 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:55,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 10:54:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:55,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:54:55,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 10:54:55,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:55,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737894866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:55,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:55,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-16 10:54:55,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559534355] [2022-11-16 10:54:55,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:55,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:54:55,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-16 10:54:55,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 339 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:55,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:55,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-16 10:54:55,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:02,445 INFO L130 PetriNetUnfolder]: 4269/15293 cut-off events. [2022-11-16 10:55:02,445 INFO L131 PetriNetUnfolder]: For 7195/7229 co-relation queries the response was YES. [2022-11-16 10:55:02,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30726 conditions, 15293 events. 4269/15293 cut-off events. For 7195/7229 co-relation queries the response was YES. Maximal size of possible extension queue 3570. Compared 253465 event pairs, 2890 based on Foata normal form. 89/11397 useless extension candidates. Maximal degree in co-relation 30675. Up to 5970 conditions per place. [2022-11-16 10:55:02,660 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 55 selfloop transitions, 8 changer transitions 7/357 dead transitions. [2022-11-16 10:55:02,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 357 transitions, 1350 flow [2022-11-16 10:55:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 10:55:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 10:55:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2474 transitions. [2022-11-16 10:55:02,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8279785809906292 [2022-11-16 10:55:02,664 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2474 transitions. [2022-11-16 10:55:02,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2474 transitions. [2022-11-16 10:55:02,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:02,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2474 transitions. [2022-11-16 10:55:02,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 274.8888888888889) internal successors, (2474), 9 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,674 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,674 INFO L175 Difference]: Start difference. First operand has 418 places, 339 transitions, 1148 flow. Second operand 9 states and 2474 transitions. [2022-11-16 10:55:02,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 357 transitions, 1350 flow [2022-11-16 10:55:02,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 357 transitions, 1338 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 10:55:02,773 INFO L231 Difference]: Finished difference. Result has 427 places, 343 transitions, 1182 flow [2022-11-16 10:55:02,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1182, PETRI_PLACES=427, PETRI_TRANSITIONS=343} [2022-11-16 10:55:02,774 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 130 predicate places. [2022-11-16 10:55:02,774 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 343 transitions, 1182 flow [2022-11-16 10:55:02,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:02,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:02,775 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:02,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:02,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:02,981 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:55:02,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:02,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1809336150, now seen corresponding path program 2 times [2022-11-16 10:55:02,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:02,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045530278] [2022-11-16 10:55:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:02,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:55:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:03,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045530278] [2022-11-16 10:55:03,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045530278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:03,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6944083] [2022-11-16 10:55:03,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:03,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:03,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:03,383 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:03,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 10:55:03,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:55:03,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:03,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:55:03,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 10:55:03,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:03,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6944083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:03,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:55:03,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-11-16 10:55:03,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414443994] [2022-11-16 10:55:03,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:03,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:03,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:55:03,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 332 [2022-11-16 10:55:03,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 343 transitions, 1182 flow. Second operand has 6 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:03,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:03,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 332 [2022-11-16 10:55:03,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:05,049 INFO L130 PetriNetUnfolder]: 182/2094 cut-off events. [2022-11-16 10:55:05,050 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2022-11-16 10:55:05,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 2094 events. 182/2094 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 14792 event pairs, 100 based on Foata normal form. 2/2081 useless extension candidates. Maximal degree in co-relation 4022. Up to 320 conditions per place. [2022-11-16 10:55:05,128 INFO L137 encePairwiseOnDemand]: 317/332 looper letters, 44 selfloop transitions, 27 changer transitions 0/356 dead transitions. [2022-11-16 10:55:05,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 356 transitions, 1351 flow [2022-11-16 10:55:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 10:55:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 10:55:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2852 transitions. [2022-11-16 10:55:05,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8590361445783132 [2022-11-16 10:55:05,132 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2852 transitions. [2022-11-16 10:55:05,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2852 transitions. [2022-11-16 10:55:05,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:05,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2852 transitions. [2022-11-16 10:55:05,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 285.2) internal successors, (2852), 10 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,141 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,141 INFO L175 Difference]: Start difference. First operand has 427 places, 343 transitions, 1182 flow. Second operand 10 states and 2852 transitions. [2022-11-16 10:55:05,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 356 transitions, 1351 flow [2022-11-16 10:55:05,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 356 transitions, 1333 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 10:55:05,157 INFO L231 Difference]: Finished difference. Result has 430 places, 345 transitions, 1218 flow [2022-11-16 10:55:05,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1218, PETRI_PLACES=430, PETRI_TRANSITIONS=345} [2022-11-16 10:55:05,158 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 133 predicate places. [2022-11-16 10:55:05,159 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 345 transitions, 1218 flow [2022-11-16 10:55:05,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:05,160 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:05,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:05,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-16 10:55:05,372 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-16 10:55:05,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash 372914308, now seen corresponding path program 2 times [2022-11-16 10:55:05,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:05,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663412311] [2022-11-16 10:55:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 10:55:05,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:05,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663412311] [2022-11-16 10:55:05,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663412311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:05,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035340940] [2022-11-16 10:55:05,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:05,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:05,694 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:05,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 10:55:05,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:55:05,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:05,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:55:05,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-16 10:55:05,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035340940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:05,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:55:05,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-11-16 10:55:05,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283408951] [2022-11-16 10:55:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:05,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-16 10:55:05,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 332 [2022-11-16 10:55:05,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 345 transitions, 1218 flow. Second operand has 6 states, 6 states have (on average 283.6666666666667) internal successors, (1702), 6 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:05,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:05,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 332 [2022-11-16 10:55:05,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:10,961 INFO L130 PetriNetUnfolder]: 3062/14305 cut-off events. [2022-11-16 10:55:10,961 INFO L131 PetriNetUnfolder]: For 6029/6046 co-relation queries the response was YES. [2022-11-16 10:55:11,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27900 conditions, 14305 events. 3062/14305 cut-off events. For 6029/6046 co-relation queries the response was YES. Maximal size of possible extension queue 2436. Compared 222538 event pairs, 221 based on Foata normal form. 18/11484 useless extension candidates. Maximal degree in co-relation 27848. Up to 3521 conditions per place. [2022-11-16 10:55:11,138 INFO L137 encePairwiseOnDemand]: 317/332 looper letters, 0 selfloop transitions, 0 changer transitions 357/357 dead transitions. [2022-11-16 10:55:11,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 357 transitions, 1382 flow [2022-11-16 10:55:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 10:55:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 10:55:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2851 transitions. [2022-11-16 10:55:11,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8587349397590361 [2022-11-16 10:55:11,142 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2851 transitions. [2022-11-16 10:55:11,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2851 transitions. [2022-11-16 10:55:11,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:11,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2851 transitions. [2022-11-16 10:55:11,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 285.1) internal successors, (2851), 10 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:11,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:11,147 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:11,147 INFO L175 Difference]: Start difference. First operand has 430 places, 345 transitions, 1218 flow. Second operand 10 states and 2851 transitions. [2022-11-16 10:55:11,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 357 transitions, 1382 flow [2022-11-16 10:55:11,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 357 transitions, 1347 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 10:55:11,231 INFO L231 Difference]: Finished difference. Result has 431 places, 0 transitions, 0 flow [2022-11-16 10:55:11,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=431, PETRI_TRANSITIONS=0} [2022-11-16 10:55:11,232 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 134 predicate places. [2022-11-16 10:55:11,232 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 0 transitions, 0 flow [2022-11-16 10:55:11,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.6666666666667) internal successors, (1702), 6 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:11,235 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2022-11-16 10:55:11,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2022-11-16 10:55:11,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2022-11-16 10:55:11,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2022-11-16 10:55:11,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2022-11-16 10:55:11,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2022-11-16 10:55:11,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2022-11-16 10:55:11,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2022-11-16 10:55:11,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2022-11-16 10:55:11,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2022-11-16 10:55:11,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2022-11-16 10:55:11,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2022-11-16 10:55:11,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2022-11-16 10:55:11,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2022-11-16 10:55:11,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2022-11-16 10:55:11,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2022-11-16 10:55:11,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2022-11-16 10:55:11,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2022-11-16 10:55:11,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2022-11-16 10:55:11,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2022-11-16 10:55:11,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2022-11-16 10:55:11,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2022-11-16 10:55:11,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2022-11-16 10:55:11,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2022-11-16 10:55:11,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2022-11-16 10:55:11,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2022-11-16 10:55:11,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2022-11-16 10:55:11,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2022-11-16 10:55:11,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2022-11-16 10:55:11,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2022-11-16 10:55:11,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2022-11-16 10:55:11,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2022-11-16 10:55:11,241 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2022-11-16 10:55:11,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2022-11-16 10:55:11,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2022-11-16 10:55:11,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2022-11-16 10:55:11,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2022-11-16 10:55:11,242 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2022-11-16 10:55:11,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:11,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:11,448 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:11,453 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 10:55:11,453 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:55:11,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:55:11 BasicIcfg [2022-11-16 10:55:11,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:55:11,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:55:11,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:55:11,460 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:55:11,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:53:58" (3/4) ... [2022-11-16 10:55:11,464 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 10:55:11,469 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 10:55:11,469 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 10:55:11,475 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-16 10:55:11,476 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 10:55:11,476 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 10:55:11,476 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 10:55:11,542 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:55:11,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:55:11,543 INFO L158 Benchmark]: Toolchain (without parser) took 74745.60ms. Allocated memory was 125.8MB in the beginning and 11.7GB in the end (delta: 11.6GB). Free memory was 88.2MB in the beginning and 9.5GB in the end (delta: -9.4GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2022-11-16 10:55:11,544 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:11,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.93ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 98.7MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 10:55:11,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.86ms. Allocated memory is still 125.8MB. Free memory was 98.7MB in the beginning and 96.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:55:11,545 INFO L158 Benchmark]: Boogie Preprocessor took 61.23ms. Allocated memory is still 125.8MB. Free memory was 96.4MB in the beginning and 94.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:55:11,549 INFO L158 Benchmark]: RCFGBuilder took 794.23ms. Allocated memory is still 125.8MB. Free memory was 94.5MB in the beginning and 70.4MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-16 10:55:11,550 INFO L158 Benchmark]: TraceAbstraction took 73403.36ms. Allocated memory was 125.8MB in the beginning and 11.7GB in the end (delta: 11.6GB). Free memory was 69.7MB in the beginning and 9.5GB in the end (delta: -9.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2022-11-16 10:55:11,550 INFO L158 Benchmark]: Witness Printer took 83.19ms. Allocated memory is still 11.7GB. Free memory was 9.5GB in the beginning and 9.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:55:11,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.93ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 98.7MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.86ms. Allocated memory is still 125.8MB. Free memory was 98.7MB in the beginning and 96.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.23ms. Allocated memory is still 125.8MB. Free memory was 96.4MB in the beginning and 94.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 794.23ms. Allocated memory is still 125.8MB. Free memory was 94.5MB in the beginning and 70.4MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 73403.36ms. Allocated memory was 125.8MB in the beginning and 11.7GB in the end (delta: 11.6GB). Free memory was 69.7MB in the beginning and 9.5GB in the end (delta: -9.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 83.19ms. Allocated memory is still 11.7GB. Free memory was 9.5GB in the beginning and 9.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 488 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 73.2s, OverallIterations: 34, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 58.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1771 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1771 mSDsluCounter, 1124 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 680 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3185 IncrementalHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 444 mSDtfsCounter, 3185 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3164 GetRequests, 2823 SyntacticMatches, 3 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1218occurred in iteration=33, InterpolantAutomatonStates: 273, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 7245 NumberOfCodeBlocks, 6995 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 7837 ConstructedInterpolants, 0 QuantifiedInterpolants, 14153 SizeOfPredicates, 47 NumberOfNonLiveVariables, 3869 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 53 InterpolantComputations, 29 PerfectInterpolantSequences, 1770/2373 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 10:55:11,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67aa3f31-34b4-4094-b0ca-b13d5ff0f23d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE