./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/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_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/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_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/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 d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --- 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 11:45:20,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:45:20,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:45:20,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:45:20,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:45:20,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:45:20,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:45:20,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:45:20,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:45:20,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:45:20,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:45:20,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:45:20,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:45:20,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:45:20,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:45:20,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:45:20,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:45:20,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:45:20,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:45:20,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:45:20,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:45:20,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:45:20,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:45:20,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:45:20,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:45:20,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:45:20,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:45:20,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:45:20,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:45:20,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:45:20,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:45:20,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:45:20,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:45:20,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:45:20,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:45:20,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:45:20,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:45:20,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:45:20,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:45:20,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:45:20,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:45:20,564 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:45:20,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:45:20,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:45:20,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:45:20,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:45:20,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:45:20,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:45:20,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:45:20,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:45:20,596 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:45:20,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:45:20,597 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:45:20,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:45:20,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:45:20,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:45:20,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:45:20,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:45:20,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:45:20,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:45:20,598 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:45:20,598 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:45:20,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:45:20,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:45:20,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:45:20,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:45:20,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:45:20,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:45:20,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:20,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:45:20,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:45:20,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:45:20,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:45:20,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:45:20,601 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:45:20,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:45:20,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:45:20,602 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_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 [2022-11-16 11:45:20,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:45:20,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:45:20,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:45:20,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:45:20,917 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:45:20,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-16 11:45:20,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/data/8b4a9e4a8/468e4040c8834f289a5aef67a88030a0/FLAG9ee41c04c [2022-11-16 11:45:21,450 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:45:21,451 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-11-16 11:45:21,458 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/data/8b4a9e4a8/468e4040c8834f289a5aef67a88030a0/FLAG9ee41c04c [2022-11-16 11:45:21,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/data/8b4a9e4a8/468e4040c8834f289a5aef67a88030a0 [2022-11-16 11:45:21,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:45:21,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:45:21,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:21,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:45:21,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:45:21,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:21" (1/1) ... [2022-11-16 11:45:21,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787ec26b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:21, skipping insertion in model container [2022-11-16 11:45:21,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:21" (1/1) ... [2022-11-16 11:45:21,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:45:21,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:45:22,057 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_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-16 11:45:22,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:22,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:45:22,098 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_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-11-16 11:45:22,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:22,118 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:45:22,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22 WrapperNode [2022-11-16 11:45:22,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:22,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:22,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:45:22,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:45:22,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,174 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 297 [2022-11-16 11:45:22,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:22,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:45:22,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:45:22,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:45:22,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:45:22,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:45:22,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:45:22,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:45:22,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (1/1) ... [2022-11-16 11:45:22,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:22,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:45:22,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:45:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:45:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:45:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:45:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:45:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:45:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:45:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:45:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:45:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:45:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:45:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:45:22,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:45:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:45:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:45:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:45:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:45:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:45:22,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:45:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:45:22,356 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 11:45:22,511 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:45:22,513 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:45:23,152 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:45:23,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:45:23,673 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:45:23,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:23 BoogieIcfgContainer [2022-11-16 11:45:23,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:45:23,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:45:23,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:45:23,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:45:23,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:45:21" (1/3) ... [2022-11-16 11:45:23,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c1e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:23, skipping insertion in model container [2022-11-16 11:45:23,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:22" (2/3) ... [2022-11-16 11:45:23,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c1e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:23, skipping insertion in model container [2022-11-16 11:45:23,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:23" (3/3) ... [2022-11-16 11:45:23,689 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-11-16 11:45:23,701 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:45:23,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:45:23,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-11-16 11:45:23,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:45:23,920 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-11-16 11:45:23,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 236 transitions, 516 flow [2022-11-16 11:45:24,148 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2022-11-16 11:45:24,148 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 11:45:24,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 221 events. 14/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 323 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-11-16 11:45:24,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 236 transitions, 516 flow [2022-11-16 11:45:24,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 202 transitions, 431 flow [2022-11-16 11:45:24,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:45:24,181 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;@53a46ef5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:45:24,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-11-16 11:45:24,207 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2022-11-16 11:45:24,208 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:45:24,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:24,209 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] [2022-11-16 11:45:24,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1065738224, now seen corresponding path program 1 times [2022-11-16 11:45:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:24,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698512338] [2022-11-16 11:45:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,699 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 11:45:24,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:24,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698512338] [2022-11-16 11:45:24,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698512338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:24,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:24,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:45:24,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580150061] [2022-11-16 11:45:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:24,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:45:24,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:45:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:45:24,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 238 [2022-11-16 11:45:24,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 202 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:24,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:24,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 238 [2022-11-16 11:45:24,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:26,136 INFO L130 PetriNetUnfolder]: 1731/2933 cut-off events. [2022-11-16 11:45:26,136 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2022-11-16 11:45:26,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6066 conditions, 2933 events. 1731/2933 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 18158 event pairs, 1376 based on Foata normal form. 268/1671 useless extension candidates. Maximal degree in co-relation 5880. Up to 2585 conditions per place. [2022-11-16 11:45:26,181 INFO L137 encePairwiseOnDemand]: 216/238 looper letters, 48 selfloop transitions, 5 changer transitions 3/185 dead transitions. [2022-11-16 11:45:26,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 185 transitions, 509 flow [2022-11-16 11:45:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 838 transitions. [2022-11-16 11:45:26,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.704201680672269 [2022-11-16 11:45:26,209 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 838 transitions. [2022-11-16 11:45:26,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 838 transitions. [2022-11-16 11:45:26,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:26,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 838 transitions. [2022-11-16 11:45:26,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.6) internal successors, (838), 5 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:26,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:26,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:26,254 INFO L175 Difference]: Start difference. First operand has 202 places, 202 transitions, 431 flow. Second operand 5 states and 838 transitions. [2022-11-16 11:45:26,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 185 transitions, 509 flow [2022-11-16 11:45:26,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 185 transitions, 492 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 11:45:26,267 INFO L231 Difference]: Finished difference. Result has 189 places, 182 transitions, 384 flow [2022-11-16 11:45:26,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=189, PETRI_TRANSITIONS=182} [2022-11-16 11:45:26,275 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -13 predicate places. [2022-11-16 11:45:26,275 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 182 transitions, 384 flow [2022-11-16 11:45:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:26,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:26,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:26,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:45:26,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1321852457, now seen corresponding path program 1 times [2022-11-16 11:45:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:26,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057072591] [2022-11-16 11:45:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:26,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:26,459 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 11:45:26,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:26,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057072591] [2022-11-16 11:45:26,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057072591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:26,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:26,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:26,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819869366] [2022-11-16 11:45:26,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:26,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:26,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:26,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 238 [2022-11-16 11:45:26,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 182 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:26,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:26,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 238 [2022-11-16 11:45:26,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:27,418 INFO L130 PetriNetUnfolder]: 1731/2929 cut-off events. [2022-11-16 11:45:27,418 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-11-16 11:45:27,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5772 conditions, 2929 events. 1731/2929 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 18157 event pairs, 1376 based on Foata normal form. 0/1403 useless extension candidates. Maximal degree in co-relation 5706. Up to 2576 conditions per place. [2022-11-16 11:45:27,449 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 41 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2022-11-16 11:45:27,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 181 transitions, 470 flow [2022-11-16 11:45:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:45:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:45:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 721 transitions. [2022-11-16 11:45:27,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7573529411764706 [2022-11-16 11:45:27,453 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 721 transitions. [2022-11-16 11:45:27,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 721 transitions. [2022-11-16 11:45:27,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:27,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 721 transitions. [2022-11-16 11:45:27,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 180.25) internal successors, (721), 4 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 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 11:45:27,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 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 11:45:27,460 INFO L175 Difference]: Start difference. First operand has 189 places, 182 transitions, 384 flow. Second operand 4 states and 721 transitions. [2022-11-16 11:45:27,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 181 transitions, 470 flow [2022-11-16 11:45:27,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 181 transitions, 460 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:45:27,466 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 378 flow [2022-11-16 11:45:27,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2022-11-16 11:45:27,467 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -18 predicate places. [2022-11-16 11:45:27,468 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 378 flow [2022-11-16 11:45:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:27,469 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] [2022-11-16 11:45:27,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:45:27,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1194760398, now seen corresponding path program 1 times [2022-11-16 11:45:27,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:27,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972320440] [2022-11-16 11:45:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:27,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:27,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972320440] [2022-11-16 11:45:27,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972320440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:27,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:27,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918547995] [2022-11-16 11:45:27,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:27,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:27,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:27,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:27,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:27,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-11-16 11:45:27,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:27,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-11-16 11:45:27,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:29,478 INFO L130 PetriNetUnfolder]: 3461/5780 cut-off events. [2022-11-16 11:45:29,478 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-11-16 11:45:29,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11458 conditions, 5780 events. 3461/5780 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 39220 event pairs, 2752 based on Foata normal form. 0/2738 useless extension candidates. Maximal degree in co-relation 11426. Up to 2582 conditions per place. [2022-11-16 11:45:29,539 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 86 selfloop transitions, 4 changer transitions 0/224 dead transitions. [2022-11-16 11:45:29,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 224 transitions, 654 flow [2022-11-16 11:45:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2022-11-16 11:45:29,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7831932773109244 [2022-11-16 11:45:29,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2022-11-16 11:45:29,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2022-11-16 11:45:29,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:29,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2022-11-16 11:45:29,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:29,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:29,552 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:29,552 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 378 flow. Second operand 5 states and 932 transitions. [2022-11-16 11:45:29,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 224 transitions, 654 flow [2022-11-16 11:45:29,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 224 transitions, 648 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:45:29,558 INFO L231 Difference]: Finished difference. Result has 188 places, 184 transitions, 402 flow [2022-11-16 11:45:29,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=188, PETRI_TRANSITIONS=184} [2022-11-16 11:45:29,560 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, -14 predicate places. [2022-11-16 11:45:29,560 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 184 transitions, 402 flow [2022-11-16 11:45:29,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:29,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:29,561 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] [2022-11-16 11:45:29,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:45:29,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:29,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1058143347, now seen corresponding path program 1 times [2022-11-16 11:45:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:29,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388570601] [2022-11-16 11:45:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:29,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:29,730 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 11:45:29,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:29,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388570601] [2022-11-16 11:45:29,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388570601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:29,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356317319] [2022-11-16 11:45:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:29,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:29,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:29,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:45:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:29,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:45:29,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:29,986 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 11:45:29,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:30,051 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 11:45:30,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356317319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:30,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:45:30,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:45:30,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232315718] [2022-11-16 11:45:30,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:45:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:45:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:45:30,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-11-16 11:45:30,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 184 transitions, 402 flow. Second operand has 12 states, 12 states have (on average 170.66666666666666) internal successors, (2048), 12 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:30,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:30,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-11-16 11:45:30,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:34,687 INFO L130 PetriNetUnfolder]: 8651/14335 cut-off events. [2022-11-16 11:45:34,687 INFO L131 PetriNetUnfolder]: For 506/506 co-relation queries the response was YES. [2022-11-16 11:45:34,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28540 conditions, 14335 events. 8651/14335 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 106007 event pairs, 6880 based on Foata normal form. 3/6750 useless extension candidates. Maximal degree in co-relation 22764. Up to 2577 conditions per place. [2022-11-16 11:45:34,812 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 203 selfloop transitions, 18 changer transitions 0/355 dead transitions. [2022-11-16 11:45:34,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 355 transitions, 1248 flow [2022-11-16 11:45:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:45:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:45:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3248 transitions. [2022-11-16 11:45:34,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7581699346405228 [2022-11-16 11:45:34,820 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3248 transitions. [2022-11-16 11:45:34,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3248 transitions. [2022-11-16 11:45:34,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:34,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3248 transitions. [2022-11-16 11:45:34,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.44444444444446) internal successors, (3248), 18 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 238.0) internal successors, (4522), 19 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,839 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 238.0) internal successors, (4522), 19 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,839 INFO L175 Difference]: Start difference. First operand has 188 places, 184 transitions, 402 flow. Second operand 18 states and 3248 transitions. [2022-11-16 11:45:34,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 355 transitions, 1248 flow [2022-11-16 11:45:34,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 355 transitions, 1246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:45:34,851 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 506 flow [2022-11-16 11:45:34,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=506, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-11-16 11:45:34,852 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 6 predicate places. [2022-11-16 11:45:34,852 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 506 flow [2022-11-16 11:45:34,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 170.66666666666666) internal successors, (2048), 12 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:34,854 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] [2022-11-16 11:45:34,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:35,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:35,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1557293564, now seen corresponding path program 1 times [2022-11-16 11:45:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:35,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885618096] [2022-11-16 11:45:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:35,239 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 11:45:35,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:35,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885618096] [2022-11-16 11:45:35,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885618096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:35,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963386202] [2022-11-16 11:45:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:35,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:35,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:35,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:35,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:45:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:35,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:45:35,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:35,456 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 11:45:35,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:35,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963386202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:35,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:35,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:45:35,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789803057] [2022-11-16 11:45:35,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:35,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:35,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:35,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:35,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:45:35,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 238 [2022-11-16 11:45:35,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:35,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:35,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 238 [2022-11-16 11:45:35,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:39,140 INFO L130 PetriNetUnfolder]: 8651/14331 cut-off events. [2022-11-16 11:45:39,140 INFO L131 PetriNetUnfolder]: For 542/542 co-relation queries the response was YES. [2022-11-16 11:45:39,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28558 conditions, 14331 events. 8651/14331 cut-off events. For 542/542 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 106065 event pairs, 6880 based on Foata normal form. 4/6747 useless extension candidates. Maximal degree in co-relation 22836. Up to 10292 conditions per place. [2022-11-16 11:45:39,266 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 87 selfloop transitions, 11 changer transitions 0/232 dead transitions. [2022-11-16 11:45:39,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 232 transitions, 767 flow [2022-11-16 11:45:39,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:39,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:45:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1266 transitions. [2022-11-16 11:45:39,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7599039615846338 [2022-11-16 11:45:39,271 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1266 transitions. [2022-11-16 11:45:39,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1266 transitions. [2022-11-16 11:45:39,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:39,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1266 transitions. [2022-11-16 11:45:39,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.85714285714286) internal successors, (1266), 7 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:39,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:39,279 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:39,279 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 506 flow. Second operand 7 states and 1266 transitions. [2022-11-16 11:45:39,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 232 transitions, 767 flow [2022-11-16 11:45:39,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 232 transitions, 735 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:45:39,285 INFO L231 Difference]: Finished difference. Result has 204 places, 192 transitions, 469 flow [2022-11-16 11:45:39,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=204, PETRI_TRANSITIONS=192} [2022-11-16 11:45:39,287 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 2 predicate places. [2022-11-16 11:45:39,287 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 192 transitions, 469 flow [2022-11-16 11:45:39,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:39,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:39,288 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] [2022-11-16 11:45:39,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:39,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:39,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1326619789, now seen corresponding path program 1 times [2022-11-16 11:45:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:39,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882341495] [2022-11-16 11:45:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:39,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:39,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:39,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882341495] [2022-11-16 11:45:39,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882341495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:39,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:39,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:45:39,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819036243] [2022-11-16 11:45:39,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:39,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:39,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:39,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:39,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 238 [2022-11-16 11:45:39,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 192 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:39,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:39,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 238 [2022-11-16 11:45:39,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:43,370 INFO L130 PetriNetUnfolder]: 9696/18891 cut-off events. [2022-11-16 11:45:43,370 INFO L131 PetriNetUnfolder]: For 712/712 co-relation queries the response was YES. [2022-11-16 11:45:43,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34802 conditions, 18891 events. 9696/18891 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 163727 event pairs, 6185 based on Foata normal form. 0/10391 useless extension candidates. Maximal degree in co-relation 27838. Up to 12997 conditions per place. [2022-11-16 11:45:43,494 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 52 selfloop transitions, 5 changer transitions 0/212 dead transitions. [2022-11-16 11:45:43,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 212 transitions, 631 flow [2022-11-16 11:45:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:45:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2022-11-16 11:45:43,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8305322128851541 [2022-11-16 11:45:43,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2022-11-16 11:45:43,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2022-11-16 11:45:43,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:43,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2022-11-16 11:45:43,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:43,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:43,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:43,501 INFO L175 Difference]: Start difference. First operand has 204 places, 192 transitions, 469 flow. Second operand 3 states and 593 transitions. [2022-11-16 11:45:43,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 212 transitions, 631 flow [2022-11-16 11:45:43,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 212 transitions, 617 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:45:43,506 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 482 flow [2022-11-16 11:45:43,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2022-11-16 11:45:43,508 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2022-11-16 11:45:43,508 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 482 flow [2022-11-16 11:45:43,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:43,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:43,509 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] [2022-11-16 11:45:43,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:45:43,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:43,510 INFO L85 PathProgramCache]: Analyzing trace with hash 100031776, now seen corresponding path program 1 times [2022-11-16 11:45:43,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:43,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887024903] [2022-11-16 11:45:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:43,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:43,577 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 11:45:43,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887024903] [2022-11-16 11:45:43,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887024903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:43,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:43,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:45:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660147671] [2022-11-16 11:45:43,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:43,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:43,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 238 [2022-11-16 11:45:43,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:43,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:43,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 238 [2022-11-16 11:45:43,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:48,086 INFO L130 PetriNetUnfolder]: 11636/22621 cut-off events. [2022-11-16 11:45:48,086 INFO L131 PetriNetUnfolder]: For 2388/2388 co-relation queries the response was YES. [2022-11-16 11:45:48,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44459 conditions, 22621 events. 11636/22621 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 206049 event pairs, 7205 based on Foata normal form. 0/12646 useless extension candidates. Maximal degree in co-relation 35564. Up to 14387 conditions per place. [2022-11-16 11:45:48,254 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 63 selfloop transitions, 4 changer transitions 0/222 dead transitions. [2022-11-16 11:45:48,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 222 transitions, 696 flow [2022-11-16 11:45:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:45:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-11-16 11:45:48,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8375350140056023 [2022-11-16 11:45:48,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-11-16 11:45:48,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-11-16 11:45:48,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:48,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-11-16 11:45:48,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:48,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:48,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:48,266 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 482 flow. Second operand 3 states and 598 transitions. [2022-11-16 11:45:48,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 222 transitions, 696 flow [2022-11-16 11:45:48,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 222 transitions, 688 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:45:48,274 INFO L231 Difference]: Finished difference. Result has 204 places, 195 transitions, 495 flow [2022-11-16 11:45:48,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=204, PETRI_TRANSITIONS=195} [2022-11-16 11:45:48,276 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 2 predicate places. [2022-11-16 11:45:48,276 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 195 transitions, 495 flow [2022-11-16 11:45:48,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:48,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:48,277 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] [2022-11-16 11:45:48,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:45:48,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:48,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1824460603, now seen corresponding path program 1 times [2022-11-16 11:45:48,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:48,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758314258] [2022-11-16 11:45:48,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:48,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:48,534 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 11:45:48,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:48,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758314258] [2022-11-16 11:45:48,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758314258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:48,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:48,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:48,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373613233] [2022-11-16 11:45:48,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:48,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:48,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 238 [2022-11-16 11:45:48,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 195 transitions, 495 flow. Second operand has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:48,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:48,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 238 [2022-11-16 11:45:48,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:52,381 INFO L130 PetriNetUnfolder]: 9081/18780 cut-off events. [2022-11-16 11:45:52,381 INFO L131 PetriNetUnfolder]: For 3838/3838 co-relation queries the response was YES. [2022-11-16 11:45:52,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37506 conditions, 18780 events. 9081/18780 cut-off events. For 3838/3838 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 167957 event pairs, 4613 based on Foata normal form. 360/11896 useless extension candidates. Maximal degree in co-relation 36304. Up to 8573 conditions per place. [2022-11-16 11:45:52,499 INFO L137 encePairwiseOnDemand]: 226/238 looper letters, 115 selfloop transitions, 8 changer transitions 2/255 dead transitions. [2022-11-16 11:45:52,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 255 transitions, 912 flow [2022-11-16 11:45:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:45:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1391 transitions. [2022-11-16 11:45:52,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7305672268907563 [2022-11-16 11:45:52,505 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1391 transitions. [2022-11-16 11:45:52,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1391 transitions. [2022-11-16 11:45:52,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:52,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1391 transitions. [2022-11-16 11:45:52,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.875) internal successors, (1391), 8 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:52,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 238.0) internal successors, (2142), 9 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:52,516 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 238.0) internal successors, (2142), 9 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:52,517 INFO L175 Difference]: Start difference. First operand has 204 places, 195 transitions, 495 flow. Second operand 8 states and 1391 transitions. [2022-11-16 11:45:52,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 255 transitions, 912 flow [2022-11-16 11:45:52,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 255 transitions, 902 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:45:52,527 INFO L231 Difference]: Finished difference. Result has 215 places, 199 transitions, 554 flow [2022-11-16 11:45:52,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=554, PETRI_PLACES=215, PETRI_TRANSITIONS=199} [2022-11-16 11:45:52,528 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 13 predicate places. [2022-11-16 11:45:52,529 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 199 transitions, 554 flow [2022-11-16 11:45:52,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:52,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:52,530 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] [2022-11-16 11:45:52,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:45:52,530 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1193981101, now seen corresponding path program 1 times [2022-11-16 11:45:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:52,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708900731] [2022-11-16 11:45:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:52,748 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 11:45:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:52,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708900731] [2022-11-16 11:45:52,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708900731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:52,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:52,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366197845] [2022-11-16 11:45:52,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:52,758 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 238 [2022-11-16 11:45:52,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 199 transitions, 554 flow. Second operand has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:52,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:52,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 238 [2022-11-16 11:45:52,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:57,006 INFO L130 PetriNetUnfolder]: 8933/17449 cut-off events. [2022-11-16 11:45:57,006 INFO L131 PetriNetUnfolder]: For 7276/7276 co-relation queries the response was YES. [2022-11-16 11:45:57,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39315 conditions, 17449 events. 8933/17449 cut-off events. For 7276/7276 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 150118 event pairs, 6692 based on Foata normal form. 12/10095 useless extension candidates. Maximal degree in co-relation 38716. Up to 13405 conditions per place. [2022-11-16 11:45:57,115 INFO L137 encePairwiseOnDemand]: 231/238 looper letters, 65 selfloop transitions, 4 changer transitions 25/224 dead transitions. [2022-11-16 11:45:57,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 224 transitions, 825 flow [2022-11-16 11:45:57,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:45:57,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1197 transitions. [2022-11-16 11:45:57,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7184873949579832 [2022-11-16 11:45:57,120 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1197 transitions. [2022-11-16 11:45:57,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1197 transitions. [2022-11-16 11:45:57,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:57,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1197 transitions. [2022-11-16 11:45:57,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:57,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:57,129 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:57,129 INFO L175 Difference]: Start difference. First operand has 215 places, 199 transitions, 554 flow. Second operand 7 states and 1197 transitions. [2022-11-16 11:45:57,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 224 transitions, 825 flow [2022-11-16 11:45:57,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 224 transitions, 822 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:45:57,140 INFO L231 Difference]: Finished difference. Result has 221 places, 197 transitions, 549 flow [2022-11-16 11:45:57,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=549, PETRI_PLACES=221, PETRI_TRANSITIONS=197} [2022-11-16 11:45:57,141 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 19 predicate places. [2022-11-16 11:45:57,141 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 197 transitions, 549 flow [2022-11-16 11:45:57,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.85714285714286) internal successors, (1133), 7 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:57,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:57,142 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] [2022-11-16 11:45:57,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:45:57,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:45:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2070645006, now seen corresponding path program 1 times [2022-11-16 11:45:57,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:57,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180986367] [2022-11-16 11:45:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:57,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:57,377 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 11:45:57,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:57,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180986367] [2022-11-16 11:45:57,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180986367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:57,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863323358] [2022-11-16 11:45:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:57,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:57,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:57,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:45:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:57,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:45:57,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:57,745 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 11:45:57,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:57,982 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 11:45:57,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863323358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:57,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:45:57,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:45:57,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124502331] [2022-11-16 11:45:57,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:57,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:45:57,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:45:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:45:57,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 238 [2022-11-16 11:45:57,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 197 transitions, 549 flow. Second operand has 18 states, 18 states have (on average 156.94444444444446) internal successors, (2825), 18 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:57,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:57,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 238 [2022-11-16 11:45:57,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:01,800 INFO L130 PetriNetUnfolder]: 7303/15311 cut-off events. [2022-11-16 11:46:01,800 INFO L131 PetriNetUnfolder]: For 7704/7704 co-relation queries the response was YES. [2022-11-16 11:46:01,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34066 conditions, 15311 events. 7303/15311 cut-off events. For 7704/7704 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 138298 event pairs, 4326 based on Foata normal form. 94/9396 useless extension candidates. Maximal degree in co-relation 33926. Up to 8375 conditions per place. [2022-11-16 11:46:01,928 INFO L137 encePairwiseOnDemand]: 225/238 looper letters, 141 selfloop transitions, 16 changer transitions 15/294 dead transitions. [2022-11-16 11:46:01,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 294 transitions, 1253 flow [2022-11-16 11:46:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:46:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:46:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2151 transitions. [2022-11-16 11:46:01,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6952165481577246 [2022-11-16 11:46:01,935 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2151 transitions. [2022-11-16 11:46:01,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2151 transitions. [2022-11-16 11:46:01,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:01,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2151 transitions. [2022-11-16 11:46:01,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.46153846153845) internal successors, (2151), 13 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:01,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 238.0) internal successors, (3332), 14 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:01,952 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 238.0) internal successors, (3332), 14 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:01,952 INFO L175 Difference]: Start difference. First operand has 221 places, 197 transitions, 549 flow. Second operand 13 states and 2151 transitions. [2022-11-16 11:46:01,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 294 transitions, 1253 flow [2022-11-16 11:46:01,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 294 transitions, 1213 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-11-16 11:46:01,975 INFO L231 Difference]: Finished difference. Result has 224 places, 201 transitions, 597 flow [2022-11-16 11:46:01,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=597, PETRI_PLACES=224, PETRI_TRANSITIONS=201} [2022-11-16 11:46:01,976 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 22 predicate places. [2022-11-16 11:46:01,977 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 201 transitions, 597 flow [2022-11-16 11:46:01,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.94444444444446) internal successors, (2825), 18 states have internal predecessors, (2825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:01,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:01,979 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] [2022-11-16 11:46:01,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:02,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:46:02,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:46:02,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:02,187 INFO L85 PathProgramCache]: Analyzing trace with hash 794119417, now seen corresponding path program 1 times [2022-11-16 11:46:02,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:02,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545522711] [2022-11-16 11:46:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:02,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:02,584 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 11:46:02,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:02,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545522711] [2022-11-16 11:46:02,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545522711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:02,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852924713] [2022-11-16 11:46:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:02,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:02,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:02,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:02,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:46:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:02,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:46:02,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:02,938 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 11:46:02,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:03,174 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 11:46:03,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852924713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:46:03,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:46:03,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:46:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665244966] [2022-11-16 11:46:03,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:03,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:46:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:03,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:46:03,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:46:03,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 238 [2022-11-16 11:46:03,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 201 transitions, 597 flow. Second operand has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:03,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:03,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 238 [2022-11-16 11:46:03,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:06,209 INFO L130 PetriNetUnfolder]: 6714/13931 cut-off events. [2022-11-16 11:46:06,209 INFO L131 PetriNetUnfolder]: For 6825/6825 co-relation queries the response was YES. [2022-11-16 11:46:06,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32030 conditions, 13931 events. 6714/13931 cut-off events. For 6825/6825 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 121178 event pairs, 3388 based on Foata normal form. 12/8597 useless extension candidates. Maximal degree in co-relation 31880. Up to 6425 conditions per place. [2022-11-16 11:46:06,298 INFO L137 encePairwiseOnDemand]: 222/238 looper letters, 89 selfloop transitions, 16 changer transitions 20/247 dead transitions. [2022-11-16 11:46:06,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 247 transitions, 997 flow [2022-11-16 11:46:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:46:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:46:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2270 transitions. [2022-11-16 11:46:06,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6812725090036015 [2022-11-16 11:46:06,305 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2270 transitions. [2022-11-16 11:46:06,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2270 transitions. [2022-11-16 11:46:06,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:06,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2270 transitions. [2022-11-16 11:46:06,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.14285714285714) internal successors, (2270), 14 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:06,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:06,320 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 238.0) internal successors, (3570), 15 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:06,321 INFO L175 Difference]: Start difference. First operand has 224 places, 201 transitions, 597 flow. Second operand 14 states and 2270 transitions. [2022-11-16 11:46:06,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 247 transitions, 997 flow [2022-11-16 11:46:06,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 247 transitions, 982 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:46:06,332 INFO L231 Difference]: Finished difference. Result has 233 places, 198 transitions, 602 flow [2022-11-16 11:46:06,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=602, PETRI_PLACES=233, PETRI_TRANSITIONS=198} [2022-11-16 11:46:06,333 INFO L288 CegarLoopForPetriNet]: 202 programPoint places, 31 predicate places. [2022-11-16 11:46:06,334 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 198 transitions, 602 flow [2022-11-16 11:46:06,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 157.0) internal successors, (2826), 18 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:06,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:06,335 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:46:06,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:06,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec2ddc5-8e6a-4e57-88db-7dc92c40229a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:06,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-11-16 11:46:06,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash 858754483, now seen corresponding path program 2 times [2022-11-16 11:46:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:06,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786767626] [2022-11-16 11:46:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:06,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat