./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN --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 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- 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-6b4ec56 [2022-11-20 10:30:10,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:10,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:10,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:10,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:10,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:10,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:10,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:10,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:10,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:10,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:10,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:10,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:10,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:10,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:10,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:10,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:10,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:10,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:10,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:10,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:10,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:10,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:10,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:10,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:10,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:10,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:10,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:10,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:10,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:10,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:10,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:10,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:10,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:10,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:10,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:10,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:10,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:10,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:10,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:10,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:10,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:30:10,901 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:10,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:10,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:10,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:10,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:10,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:10,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:10,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:10,905 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:10,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:10,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:30:10,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:30:10,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:10,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:30:10,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:10,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:10,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:10,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:10,908 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:30:10,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:30:10,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:10,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:10,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:10,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:10,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:10,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:10,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:10,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:10,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:10,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:10,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:10,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:10,911 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:10,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:10,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:10,912 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_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2022-11-20 10:30:11,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:11,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:11,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:11,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:11,285 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:11,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/queue_ok_longest.i [2022-11-20 10:30:14,332 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:14,632 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:14,633 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/sv-benchmarks/c/pthread/queue_ok_longest.i [2022-11-20 10:30:14,669 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/data/d5b83a666/e4f3860bd4c84ffe89bade0dc5c78164/FLAGd4a29b653 [2022-11-20 10:30:14,688 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/data/d5b83a666/e4f3860bd4c84ffe89bade0dc5c78164 [2022-11-20 10:30:14,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:14,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:14,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:14,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:14,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:14,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:14" (1/1) ... [2022-11-20 10:30:14,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ff519e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:14, skipping insertion in model container [2022-11-20 10:30:14,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:14" (1/1) ... [2022-11-20 10:30:14,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:14,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:15,313 WARN L237 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_844ab89a-c558-4631-b1c0-0c56d369f838/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2022-11-20 10:30:15,319 WARN L237 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_844ab89a-c558-4631-b1c0-0c56d369f838/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2022-11-20 10:30:15,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:15,340 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:15,420 WARN L237 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_844ab89a-c558-4631-b1c0-0c56d369f838/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2022-11-20 10:30:15,425 WARN L237 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_844ab89a-c558-4631-b1c0-0c56d369f838/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2022-11-20 10:30:15,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:15,490 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:15,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15 WrapperNode [2022-11-20 10:30:15,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:15,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:15,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:15,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:15,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,578 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 214 [2022-11-20 10:30:15,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:15,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:15,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:15,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:15,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,642 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:15,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:15,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:15,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:15,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (1/1) ... [2022-11-20 10:30:15,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:15,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:15,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:15,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 10:30:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 10:30:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 10:30:15,748 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 10:30:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:30:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:30:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:30:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:30:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:30:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:15,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:15,753 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:30:15,981 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:15,983 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:16,490 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:16,500 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:16,505 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:30:16,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:16 BoogieIcfgContainer [2022-11-20 10:30:16,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:16,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:16,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:16,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:16,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:14" (1/3) ... [2022-11-20 10:30:16,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559f15b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:16, skipping insertion in model container [2022-11-20 10:30:16,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:15" (2/3) ... [2022-11-20 10:30:16,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559f15b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:16, skipping insertion in model container [2022-11-20 10:30:16,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:16" (3/3) ... [2022-11-20 10:30:16,530 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2022-11-20 10:30:16,542 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:30:16,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:16,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 10:30:16,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:30:16,724 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:30:16,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 251 transitions, 518 flow [2022-11-20 10:30:16,935 INFO L130 PetriNetUnfolder]: 13/249 cut-off events. [2022-11-20 10:30:16,937 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:30:16,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 249 events. 13/249 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 458 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 169. Up to 3 conditions per place. [2022-11-20 10:30:16,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 251 transitions, 518 flow [2022-11-20 10:30:16,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 233 places, 239 transitions, 487 flow [2022-11-20 10:30:16,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:16,984 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;@4b96eca8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:16,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 10:30:17,014 INFO L130 PetriNetUnfolder]: 6/139 cut-off events. [2022-11-20 10:30:17,014 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:30:17,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:17,015 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:17,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:30:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:17,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1034587718, now seen corresponding path program 1 times [2022-11-20 10:30:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:17,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199348284] [2022-11-20 10:30:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:18,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:18,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199348284] [2022-11-20 10:30:18,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199348284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:18,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:18,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:30:18,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748452688] [2022-11-20 10:30:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:18,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:30:18,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:30:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:30:18,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 251 [2022-11-20 10:30:18,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 239 transitions, 487 flow. Second operand has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:18,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:18,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 251 [2022-11-20 10:30:18,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:19,901 INFO L130 PetriNetUnfolder]: 611/2940 cut-off events. [2022-11-20 10:30:19,901 INFO L131 PetriNetUnfolder]: For 88/91 co-relation queries the response was YES. [2022-11-20 10:30:19,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 2940 events. 611/2940 cut-off events. For 88/91 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 24667 event pairs, 459 based on Foata normal form. 118/2693 useless extension candidates. Maximal degree in co-relation 3504. Up to 882 conditions per place. [2022-11-20 10:30:19,932 INFO L137 encePairwiseOnDemand]: 234/251 looper letters, 42 selfloop transitions, 12 changer transitions 0/227 dead transitions. [2022-11-20 10:30:19,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 227 transitions, 571 flow [2022-11-20 10:30:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:30:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 10:30:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2477 transitions. [2022-11-20 10:30:19,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7591173766472571 [2022-11-20 10:30:19,960 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2477 transitions. [2022-11-20 10:30:19,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2477 transitions. [2022-11-20 10:30:19,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:19,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2477 transitions. [2022-11-20 10:30:19,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:19,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 251.0) internal successors, (3514), 14 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:19,995 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 251.0) internal successors, (3514), 14 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:19,997 INFO L175 Difference]: Start difference. First operand has 233 places, 239 transitions, 487 flow. Second operand 13 states and 2477 transitions. [2022-11-20 10:30:19,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 227 transitions, 571 flow [2022-11-20 10:30:20,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 227 transitions, 566 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:30:20,011 INFO L231 Difference]: Finished difference. Result has 235 places, 227 transitions, 482 flow [2022-11-20 10:30:20,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=482, PETRI_PLACES=235, PETRI_TRANSITIONS=227} [2022-11-20 10:30:20,019 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 2 predicate places. [2022-11-20 10:30:20,020 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 227 transitions, 482 flow [2022-11-20 10:30:20,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:20,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:20,022 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] [2022-11-20 10:30:20,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:20,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:30:20,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:20,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1366298667, now seen corresponding path program 1 times [2022-11-20 10:30:20,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:20,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131500915] [2022-11-20 10:30:20,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:20,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:32,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:32,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131500915] [2022-11-20 10:30:32,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131500915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:32,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:32,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 10:30:32,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663152361] [2022-11-20 10:30:32,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:32,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:30:32,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:30:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:30:32,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 251 [2022-11-20 10:30:32,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 227 transitions, 482 flow. Second operand has 18 states, 18 states have (on average 179.88888888888889) internal successors, (3238), 18 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:32,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:32,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 251 [2022-11-20 10:30:32,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:41,187 INFO L130 PetriNetUnfolder]: 1342/5185 cut-off events. [2022-11-20 10:30:41,187 INFO L131 PetriNetUnfolder]: For 31/34 co-relation queries the response was YES. [2022-11-20 10:30:41,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7370 conditions, 5185 events. 1342/5185 cut-off events. For 31/34 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 46642 event pairs, 872 based on Foata normal form. 1/4450 useless extension candidates. Maximal degree in co-relation 7271. Up to 1675 conditions per place. [2022-11-20 10:30:41,225 INFO L137 encePairwiseOnDemand]: 230/251 looper letters, 108 selfloop transitions, 27 changer transitions 0/299 dead transitions. [2022-11-20 10:30:41,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 299 transitions, 902 flow [2022-11-20 10:30:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:30:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 10:30:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3699 transitions. [2022-11-20 10:30:41,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7368525896414343 [2022-11-20 10:30:41,235 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3699 transitions. [2022-11-20 10:30:41,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3699 transitions. [2022-11-20 10:30:41,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:41,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3699 transitions. [2022-11-20 10:30:41,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 184.95) internal successors, (3699), 20 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:41,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:41,259 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:41,260 INFO L175 Difference]: Start difference. First operand has 235 places, 227 transitions, 482 flow. Second operand 20 states and 3699 transitions. [2022-11-20 10:30:41,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 299 transitions, 902 flow [2022-11-20 10:30:41,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 299 transitions, 879 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 10:30:41,273 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 616 flow [2022-11-20 10:30:41,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=616, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2022-11-20 10:30:41,275 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 19 predicate places. [2022-11-20 10:30:41,275 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 616 flow [2022-11-20 10:30:41,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 179.88888888888889) internal successors, (3238), 18 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:41,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:41,279 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] [2022-11-20 10:30:41,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:41,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:30:41,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1204215650, now seen corresponding path program 1 times [2022-11-20 10:30:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:41,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508401434] [2022-11-20 10:30:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:43,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:43,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508401434] [2022-11-20 10:30:43,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508401434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:43,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:43,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 10:30:43,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177340315] [2022-11-20 10:30:43,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:43,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:30:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:43,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:30:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:30:43,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-20 10:30:43,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 616 flow. Second operand has 20 states, 20 states have (on average 171.1) internal successors, (3422), 20 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:43,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:43,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-20 10:30:43,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:46,943 INFO L130 PetriNetUnfolder]: 2220/7783 cut-off events. [2022-11-20 10:30:46,944 INFO L131 PetriNetUnfolder]: For 889/896 co-relation queries the response was YES. [2022-11-20 10:30:46,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12410 conditions, 7783 events. 2220/7783 cut-off events. For 889/896 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 72945 event pairs, 175 based on Foata normal form. 86/7089 useless extension candidates. Maximal degree in co-relation 12298. Up to 1746 conditions per place. [2022-11-20 10:30:47,019 INFO L137 encePairwiseOnDemand]: 229/251 looper letters, 208 selfloop transitions, 44 changer transitions 0/409 dead transitions. [2022-11-20 10:30:47,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 409 transitions, 1501 flow [2022-11-20 10:30:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:30:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 10:30:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3958 transitions. [2022-11-20 10:30:47,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7167692864904021 [2022-11-20 10:30:47,032 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3958 transitions. [2022-11-20 10:30:47,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3958 transitions. [2022-11-20 10:30:47,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:47,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3958 transitions. [2022-11-20 10:30:47,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 179.9090909090909) internal successors, (3958), 22 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:47,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 251.0) internal successors, (5773), 23 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:47,052 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 251.0) internal successors, (5773), 23 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:47,053 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 616 flow. Second operand 22 states and 3958 transitions. [2022-11-20 10:30:47,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 409 transitions, 1501 flow [2022-11-20 10:30:47,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 409 transitions, 1488 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 10:30:47,071 INFO L231 Difference]: Finished difference. Result has 273 places, 277 transitions, 861 flow [2022-11-20 10:30:47,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=861, PETRI_PLACES=273, PETRI_TRANSITIONS=277} [2022-11-20 10:30:47,075 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 40 predicate places. [2022-11-20 10:30:47,075 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 277 transitions, 861 flow [2022-11-20 10:30:47,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 171.1) internal successors, (3422), 20 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:47,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:47,078 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] [2022-11-20 10:30:47,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:47,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:30:47,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash -526008184, now seen corresponding path program 1 times [2022-11-20 10:30:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:47,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022169396] [2022-11-20 10:30:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:47,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:47,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022169396] [2022-11-20 10:30:47,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022169396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:47,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:47,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:30:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824368143] [2022-11-20 10:30:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:47,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:47,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:47,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:47,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:47,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 251 [2022-11-20 10:30:47,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 277 transitions, 861 flow. Second operand has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 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) [2022-11-20 10:30:47,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:47,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 251 [2022-11-20 10:30:47,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:47,916 INFO L130 PetriNetUnfolder]: 220/3315 cut-off events. [2022-11-20 10:30:47,917 INFO L131 PetriNetUnfolder]: For 227/229 co-relation queries the response was YES. [2022-11-20 10:30:47,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 3315 events. 220/3315 cut-off events. For 227/229 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 29920 event pairs, 15 based on Foata normal form. 0/2895 useless extension candidates. Maximal degree in co-relation 3961. Up to 224 conditions per place. [2022-11-20 10:30:47,954 INFO L137 encePairwiseOnDemand]: 246/251 looper letters, 15 selfloop transitions, 4 changer transitions 0/284 dead transitions. [2022-11-20 10:30:47,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 284 transitions, 915 flow [2022-11-20 10:30:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:30:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:30:47,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 944 transitions. [2022-11-20 10:30:47,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9402390438247012 [2022-11-20 10:30:47,958 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 944 transitions. [2022-11-20 10:30:47,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 944 transitions. [2022-11-20 10:30:47,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:47,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 944 transitions. [2022-11-20 10:30:47,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:47,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:47,969 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:47,969 INFO L175 Difference]: Start difference. First operand has 273 places, 277 transitions, 861 flow. Second operand 4 states and 944 transitions. [2022-11-20 10:30:47,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 284 transitions, 915 flow [2022-11-20 10:30:47,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 284 transitions, 882 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-20 10:30:47,980 INFO L231 Difference]: Finished difference. Result has 270 places, 280 transitions, 856 flow [2022-11-20 10:30:47,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=856, PETRI_PLACES=270, PETRI_TRANSITIONS=280} [2022-11-20 10:30:47,987 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 37 predicate places. [2022-11-20 10:30:47,987 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 280 transitions, 856 flow [2022-11-20 10:30:47,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 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) [2022-11-20 10:30:47,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:47,988 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] [2022-11-20 10:30:47,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:30:47,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:30:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1884600977, now seen corresponding path program 1 times [2022-11-20 10:30:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:47,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095994181] [2022-11-20 10:30:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095994181] [2022-11-20 10:30:48,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095994181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:48,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:48,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:48,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211528685] [2022-11-20 10:30:48,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:48,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:48,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:48,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:48,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 251 [2022-11-20 10:30:48,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 280 transitions, 856 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:48,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:48,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 251 [2022-11-20 10:30:48,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:49,036 INFO L130 PetriNetUnfolder]: 372/4921 cut-off events. [2022-11-20 10:30:49,036 INFO L131 PetriNetUnfolder]: For 323/333 co-relation queries the response was YES. [2022-11-20 10:30:49,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6383 conditions, 4921 events. 372/4921 cut-off events. For 323/333 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 51818 event pairs, 31 based on Foata normal form. 0/4345 useless extension candidates. Maximal degree in co-relation 6298. Up to 486 conditions per place. [2022-11-20 10:30:49,081 INFO L137 encePairwiseOnDemand]: 244/251 looper letters, 21 selfloop transitions, 4 changer transitions 0/290 dead transitions. [2022-11-20 10:30:49,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 290 transitions, 929 flow [2022-11-20 10:30:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:30:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:30:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-11-20 10:30:49,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9306772908366534 [2022-11-20 10:30:49,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-11-20 10:30:49,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-11-20 10:30:49,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:49,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-11-20 10:30:49,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:49,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:49,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:49,095 INFO L175 Difference]: Start difference. First operand has 270 places, 280 transitions, 856 flow. Second operand 5 states and 1168 transitions. [2022-11-20 10:30:49,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 290 transitions, 929 flow [2022-11-20 10:30:49,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 290 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:49,106 INFO L231 Difference]: Finished difference. Result has 276 places, 283 transitions, 886 flow [2022-11-20 10:30:49,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=886, PETRI_PLACES=276, PETRI_TRANSITIONS=283} [2022-11-20 10:30:49,109 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 43 predicate places. [2022-11-20 10:30:49,109 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 283 transitions, 886 flow [2022-11-20 10:30:49,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:49,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:49,127 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] [2022-11-20 10:30:49,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:30:49,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:30:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1942994580, now seen corresponding path program 1 times [2022-11-20 10:30:49,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:49,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486852676] [2022-11-20 10:30:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:49,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:30:52,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:52,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486852676] [2022-11-20 10:30:52,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486852676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:52,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:52,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 10:30:52,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421105007] [2022-11-20 10:30:52,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:52,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 10:30:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 10:30:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:30:52,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 251 [2022-11-20 10:30:52,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 283 transitions, 886 flow. Second operand has 18 states, 18 states have (on average 180.05555555555554) internal successors, (3241), 18 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:52,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:52,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 251 [2022-11-20 10:30:52,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:59,197 INFO L130 PetriNetUnfolder]: 6627/24237 cut-off events. [2022-11-20 10:30:59,197 INFO L131 PetriNetUnfolder]: For 4268/4335 co-relation queries the response was YES. [2022-11-20 10:30:59,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41547 conditions, 24237 events. 6627/24237 cut-off events. For 4268/4335 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 295776 event pairs, 4023 based on Foata normal form. 11/21524 useless extension candidates. Maximal degree in co-relation 41435. Up to 8780 conditions per place. [2022-11-20 10:30:59,629 INFO L137 encePairwiseOnDemand]: 229/251 looper letters, 134 selfloop transitions, 33 changer transitions 0/350 dead transitions. [2022-11-20 10:30:59,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 350 transitions, 1393 flow [2022-11-20 10:30:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:30:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 10:30:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3703 transitions. [2022-11-20 10:30:59,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7376494023904383 [2022-11-20 10:30:59,639 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3703 transitions. [2022-11-20 10:30:59,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3703 transitions. [2022-11-20 10:30:59,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:59,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3703 transitions. [2022-11-20 10:30:59,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 185.15) internal successors, (3703), 20 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:59,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:59,660 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 251.0) internal successors, (5271), 21 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:59,660 INFO L175 Difference]: Start difference. First operand has 276 places, 283 transitions, 886 flow. Second operand 20 states and 3703 transitions. [2022-11-20 10:30:59,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 350 transitions, 1393 flow [2022-11-20 10:30:59,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 350 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:59,714 INFO L231 Difference]: Finished difference. Result has 299 places, 293 transitions, 1029 flow [2022-11-20 10:30:59,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1029, PETRI_PLACES=299, PETRI_TRANSITIONS=293} [2022-11-20 10:30:59,717 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 66 predicate places. [2022-11-20 10:30:59,717 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 293 transitions, 1029 flow [2022-11-20 10:30:59,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 180.05555555555554) internal successors, (3241), 18 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:30:59,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:59,719 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] [2022-11-20 10:30:59,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:30:59,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:30:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:59,720 INFO L85 PathProgramCache]: Analyzing trace with hash -531483381, now seen corresponding path program 1 times [2022-11-20 10:30:59,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:59,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127955765] [2022-11-20 10:30:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:01,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127955765] [2022-11-20 10:31:01,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127955765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:01,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:01,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 10:31:01,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786074603] [2022-11-20 10:31:01,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:01,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:31:01,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:01,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:31:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:31:01,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-20 10:31:01,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 293 transitions, 1029 flow. Second operand has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:01,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:01,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-20 10:31:01,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:07,576 INFO L130 PetriNetUnfolder]: 8302/29747 cut-off events. [2022-11-20 10:31:07,576 INFO L131 PetriNetUnfolder]: For 7574/7694 co-relation queries the response was YES. [2022-11-20 10:31:07,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53820 conditions, 29747 events. 8302/29747 cut-off events. For 7574/7694 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 371618 event pairs, 1594 based on Foata normal form. 299/27840 useless extension candidates. Maximal degree in co-relation 53688. Up to 8324 conditions per place. [2022-11-20 10:31:07,884 INFO L137 encePairwiseOnDemand]: 228/251 looper letters, 215 selfloop transitions, 59 changer transitions 0/450 dead transitions. [2022-11-20 10:31:07,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 450 transitions, 2033 flow [2022-11-20 10:31:07,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:31:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:31:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3783 transitions. [2022-11-20 10:31:07,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7177006260671599 [2022-11-20 10:31:07,895 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3783 transitions. [2022-11-20 10:31:07,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3783 transitions. [2022-11-20 10:31:07,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:07,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3783 transitions. [2022-11-20 10:31:07,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 180.14285714285714) internal successors, (3783), 21 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:07,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 251.0) internal successors, (5522), 22 states have internal predecessors, (5522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:07,918 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 251.0) internal successors, (5522), 22 states have internal predecessors, (5522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:07,919 INFO L175 Difference]: Start difference. First operand has 299 places, 293 transitions, 1029 flow. Second operand 21 states and 3783 transitions. [2022-11-20 10:31:07,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 450 transitions, 2033 flow [2022-11-20 10:31:08,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 450 transitions, 2001 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-20 10:31:08,121 INFO L231 Difference]: Finished difference. Result has 314 places, 317 transitions, 1335 flow [2022-11-20 10:31:08,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1335, PETRI_PLACES=314, PETRI_TRANSITIONS=317} [2022-11-20 10:31:08,122 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 81 predicate places. [2022-11-20 10:31:08,122 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 317 transitions, 1335 flow [2022-11-20 10:31:08,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:08,124 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:08,124 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] [2022-11-20 10:31:08,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:31:08,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:31:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:08,125 INFO L85 PathProgramCache]: Analyzing trace with hash 324229669, now seen corresponding path program 2 times [2022-11-20 10:31:08,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:08,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460575302] [2022-11-20 10:31:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:09,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:09,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460575302] [2022-11-20 10:31:09,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460575302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:09,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:09,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 10:31:09,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971830771] [2022-11-20 10:31:09,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:31:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:31:09,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:31:09,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 251 [2022-11-20 10:31:09,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 317 transitions, 1335 flow. Second operand has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:09,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:09,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 251 [2022-11-20 10:31:09,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:16,762 INFO L130 PetriNetUnfolder]: 8914/31378 cut-off events. [2022-11-20 10:31:16,762 INFO L131 PetriNetUnfolder]: For 16560/16746 co-relation queries the response was YES. [2022-11-20 10:31:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60192 conditions, 31378 events. 8914/31378 cut-off events. For 16560/16746 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 392864 event pairs, 1162 based on Foata normal form. 361/29355 useless extension candidates. Maximal degree in co-relation 60052. Up to 6856 conditions per place. [2022-11-20 10:31:17,115 INFO L137 encePairwiseOnDemand]: 230/251 looper letters, 194 selfloop transitions, 64 changer transitions 0/434 dead transitions. [2022-11-20 10:31:17,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 434 transitions, 2170 flow [2022-11-20 10:31:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:31:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 10:31:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3251 transitions. [2022-11-20 10:31:17,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7195661797255423 [2022-11-20 10:31:17,124 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3251 transitions. [2022-11-20 10:31:17,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3251 transitions. [2022-11-20 10:31:17,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:17,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3251 transitions. [2022-11-20 10:31:17,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 180.61111111111111) internal successors, (3251), 18 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:17,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:17,144 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:17,145 INFO L175 Difference]: Start difference. First operand has 314 places, 317 transitions, 1335 flow. Second operand 18 states and 3251 transitions. [2022-11-20 10:31:17,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 434 transitions, 2170 flow [2022-11-20 10:31:17,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 434 transitions, 2125 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-11-20 10:31:17,448 INFO L231 Difference]: Finished difference. Result has 326 places, 325 transitions, 1548 flow [2022-11-20 10:31:17,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1548, PETRI_PLACES=326, PETRI_TRANSITIONS=325} [2022-11-20 10:31:17,452 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 93 predicate places. [2022-11-20 10:31:17,453 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 325 transitions, 1548 flow [2022-11-20 10:31:17,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 171.3684210526316) internal successors, (3256), 19 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:17,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:17,455 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] [2022-11-20 10:31:17,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:31:17,455 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:31:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash 99264505, now seen corresponding path program 1 times [2022-11-20 10:31:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:17,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286170525] [2022-11-20 10:31:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:17,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:17,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286170525] [2022-11-20 10:31:17,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286170525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:17,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:17,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:31:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545202375] [2022-11-20 10:31:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:31:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:31:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:31:17,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 251 [2022-11-20 10:31:17,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 325 transitions, 1548 flow. Second operand has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:17,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:17,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 251 [2022-11-20 10:31:17,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:18,998 INFO L130 PetriNetUnfolder]: 465/7417 cut-off events. [2022-11-20 10:31:18,998 INFO L131 PetriNetUnfolder]: For 1975/2365 co-relation queries the response was YES. [2022-11-20 10:31:19,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10234 conditions, 7417 events. 465/7417 cut-off events. For 1975/2365 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 84358 event pairs, 23 based on Foata normal form. 44/6806 useless extension candidates. Maximal degree in co-relation 10168. Up to 227 conditions per place. [2022-11-20 10:31:19,292 INFO L137 encePairwiseOnDemand]: 244/251 looper letters, 21 selfloop transitions, 4 changer transitions 0/335 dead transitions. [2022-11-20 10:31:19,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 335 transitions, 1624 flow [2022-11-20 10:31:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:31:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:31:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1168 transitions. [2022-11-20 10:31:19,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9306772908366534 [2022-11-20 10:31:19,296 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1168 transitions. [2022-11-20 10:31:19,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1168 transitions. [2022-11-20 10:31:19,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:19,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1168 transitions. [2022-11-20 10:31:19,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.6) internal successors, (1168), 5 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,304 INFO L175 Difference]: Start difference. First operand has 326 places, 325 transitions, 1548 flow. Second operand 5 states and 1168 transitions. [2022-11-20 10:31:19,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 335 transitions, 1624 flow [2022-11-20 10:31:19,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 335 transitions, 1578 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-20 10:31:19,327 INFO L231 Difference]: Finished difference. Result has 323 places, 328 transitions, 1534 flow [2022-11-20 10:31:19,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1534, PETRI_PLACES=323, PETRI_TRANSITIONS=328} [2022-11-20 10:31:19,329 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 90 predicate places. [2022-11-20 10:31:19,329 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 328 transitions, 1534 flow [2022-11-20 10:31:19,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.75) internal successors, (919), 4 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,329 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:19,330 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] [2022-11-20 10:31:19,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:31:19,330 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:31:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:19,331 INFO L85 PathProgramCache]: Analyzing trace with hash -738274639, now seen corresponding path program 1 times [2022-11-20 10:31:19,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:19,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497727463] [2022-11-20 10:31:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:19,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:19,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:19,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497727463] [2022-11-20 10:31:19,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497727463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:19,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:19,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:31:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913851183] [2022-11-20 10:31:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:19,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:31:19,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:19,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:31:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:31:19,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 251 [2022-11-20 10:31:19,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 328 transitions, 1534 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:19,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 251 [2022-11-20 10:31:19,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:19,654 INFO L130 PetriNetUnfolder]: 49/974 cut-off events. [2022-11-20 10:31:19,655 INFO L131 PetriNetUnfolder]: For 392/393 co-relation queries the response was YES. [2022-11-20 10:31:19,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 974 events. 49/974 cut-off events. For 392/393 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4469 event pairs, 2 based on Foata normal form. 0/912 useless extension candidates. Maximal degree in co-relation 1505. Up to 22 conditions per place. [2022-11-20 10:31:19,665 INFO L137 encePairwiseOnDemand]: 247/251 looper letters, 7 selfloop transitions, 2 changer transitions 5/295 dead transitions. [2022-11-20 10:31:19,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 295 transitions, 1247 flow [2022-11-20 10:31:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:31:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:31:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2022-11-20 10:31:19,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.949535192563081 [2022-11-20 10:31:19,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2022-11-20 10:31:19,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2022-11-20 10:31:19,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:19,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2022-11-20 10:31:19,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,679 INFO L175 Difference]: Start difference. First operand has 323 places, 328 transitions, 1534 flow. Second operand 3 states and 715 transitions. [2022-11-20 10:31:19,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 295 transitions, 1247 flow [2022-11-20 10:31:19,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 295 transitions, 1222 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-20 10:31:19,691 INFO L231 Difference]: Finished difference. Result has 318 places, 289 transitions, 1191 flow [2022-11-20 10:31:19,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1191, PETRI_PLACES=318, PETRI_TRANSITIONS=289} [2022-11-20 10:31:19,693 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 85 predicate places. [2022-11-20 10:31:19,694 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 289 transitions, 1191 flow [2022-11-20 10:31:19,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:19,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:19,695 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:31:19,695 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:31:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1781137955, now seen corresponding path program 1 times [2022-11-20 10:31:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:19,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210750678] [2022-11-20 10:31:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:21,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:21,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210750678] [2022-11-20 10:31:21,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210750678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:21,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:21,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 10:31:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986152520] [2022-11-20 10:31:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:21,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:31:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:21,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:31:21,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:31:21,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 251 [2022-11-20 10:31:21,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 289 transitions, 1191 flow. Second operand has 17 states, 17 states have (on average 183.64705882352942) internal successors, (3122), 17 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:21,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:21,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 251 [2022-11-20 10:31:21,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:22,196 INFO L130 PetriNetUnfolder]: 331/2018 cut-off events. [2022-11-20 10:31:22,196 INFO L131 PetriNetUnfolder]: For 1029/1034 co-relation queries the response was YES. [2022-11-20 10:31:22,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3831 conditions, 2018 events. 331/2018 cut-off events. For 1029/1034 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12789 event pairs, 237 based on Foata normal form. 3/1899 useless extension candidates. Maximal degree in co-relation 3698. Up to 641 conditions per place. [2022-11-20 10:31:22,213 INFO L137 encePairwiseOnDemand]: 234/251 looper letters, 77 selfloop transitions, 30 changer transitions 0/297 dead transitions. [2022-11-20 10:31:22,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 297 transitions, 1419 flow [2022-11-20 10:31:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:31:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:31:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2799 transitions. [2022-11-20 10:31:22,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7434262948207171 [2022-11-20 10:31:22,218 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2799 transitions. [2022-11-20 10:31:22,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2799 transitions. [2022-11-20 10:31:22,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:22,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2799 transitions. [2022-11-20 10:31:22,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 186.6) internal successors, (2799), 15 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:22,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:22,231 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:22,232 INFO L175 Difference]: Start difference. First operand has 318 places, 289 transitions, 1191 flow. Second operand 15 states and 2799 transitions. [2022-11-20 10:31:22,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 297 transitions, 1419 flow [2022-11-20 10:31:22,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 297 transitions, 1415 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:31:22,245 INFO L231 Difference]: Finished difference. Result has 332 places, 292 transitions, 1277 flow [2022-11-20 10:31:22,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1277, PETRI_PLACES=332, PETRI_TRANSITIONS=292} [2022-11-20 10:31:22,247 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 99 predicate places. [2022-11-20 10:31:22,247 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 292 transitions, 1277 flow [2022-11-20 10:31:22,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 183.64705882352942) internal successors, (3122), 17 states have internal predecessors, (3122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:22,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:22,249 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:22,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:31:22,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:31:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1319605564, now seen corresponding path program 1 times [2022-11-20 10:31:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:22,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990960618] [2022-11-20 10:31:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:24,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:24,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990960618] [2022-11-20 10:31:24,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990960618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:31:24,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:31:24,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 10:31:24,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400159594] [2022-11-20 10:31:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:31:24,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:31:24,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:31:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:31:24,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 251 [2022-11-20 10:31:24,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 292 transitions, 1277 flow. Second operand has 19 states, 19 states have (on average 174.78947368421052) internal successors, (3321), 19 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:24,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:24,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 251 [2022-11-20 10:31:24,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:25,790 INFO L130 PetriNetUnfolder]: 317/1966 cut-off events. [2022-11-20 10:31:25,790 INFO L131 PetriNetUnfolder]: For 1122/1127 co-relation queries the response was YES. [2022-11-20 10:31:25,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 1966 events. 317/1966 cut-off events. For 1122/1127 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12421 event pairs, 109 based on Foata normal form. 7/1863 useless extension candidates. Maximal degree in co-relation 3663. Up to 477 conditions per place. [2022-11-20 10:31:25,806 INFO L137 encePairwiseOnDemand]: 235/251 looper letters, 95 selfloop transitions, 26 changer transitions 0/304 dead transitions. [2022-11-20 10:31:25,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 304 transitions, 1536 flow [2022-11-20 10:31:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:31:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-20 10:31:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2676 transitions. [2022-11-20 10:31:25,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7107569721115538 [2022-11-20 10:31:25,813 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2676 transitions. [2022-11-20 10:31:25,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2676 transitions. [2022-11-20 10:31:25,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:25,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2676 transitions. [2022-11-20 10:31:25,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 178.4) internal successors, (2676), 15 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:25,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:25,829 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 251.0) internal successors, (4016), 16 states have internal predecessors, (4016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:25,829 INFO L175 Difference]: Start difference. First operand has 332 places, 292 transitions, 1277 flow. Second operand 15 states and 2676 transitions. [2022-11-20 10:31:25,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 304 transitions, 1536 flow [2022-11-20 10:31:25,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 304 transitions, 1502 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-20 10:31:25,847 INFO L231 Difference]: Finished difference. Result has 337 places, 292 transitions, 1305 flow [2022-11-20 10:31:25,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1305, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2022-11-20 10:31:25,848 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 104 predicate places. [2022-11-20 10:31:25,849 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 1305 flow [2022-11-20 10:31:25,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 174.78947368421052) internal successors, (3321), 19 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:25,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:25,851 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:25,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:31:25,851 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:31:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1123022933, now seen corresponding path program 1 times [2022-11-20 10:31:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:25,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569552457] [2022-11-20 10:31:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:25,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:29,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:29,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569552457] [2022-11-20 10:31:29,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569552457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:31:29,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603818605] [2022-11-20 10:31:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:29,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:29,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:29,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:29,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:31:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:29,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-20 10:31:29,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:31:29,467 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:31:29,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:31:29,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 10:31:29,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 10:31:30,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 10:31:31,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:31:31,033 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 10:31:31,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 10:31:31,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:31,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:31:31,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2022-11-20 10:31:31,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 27 [2022-11-20 10:31:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:32,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 10:31:32,495 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-20 10:31:32,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 39 [2022-11-20 10:31:32,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 10:31:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:32,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:31:33,231 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork1_enqueue_#t~post41#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ |c_~#queue~0.offset| 3204)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 3208 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-20 10:31:33,255 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) (+ |c_t1Thread1of1ForFork1_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ |c_~#queue~0.offset| 3204)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 3208 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-20 10:31:33,266 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_344 (Array Int Int))) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse2 (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (store .cse1 .cse2 (+ (select .cse1 .cse2) 1)))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ |c_~#queue~0.offset| 3204)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 3208 |c_~#queue~0.offset|)) 2147483647)) is different from false [2022-11-20 10:31:33,561 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse2 (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse3 (select .cse1 .cse2))) (or (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int))) (or (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse1 (+ 3208 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_341) .cse2 (+ .cse3 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ |c_~#queue~0.offset| 3204)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (not (<= v_ArrVal_341 (+ |c_t1Thread1of1ForFork1_enqueue_#t~post38#1| 1))))) (= .cse3 800)))) is different from false [2022-11-20 10:31:33,621 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse2 (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse3 (select .cse1 .cse2))) (or (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int))) (or (< (+ |c_t1Thread1of1ForFork1_enqueue_#t~mem37#1| 1) v_ArrVal_341) (< (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse1 (+ 3208 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_341) .cse2 (+ .cse3 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 (+ |c_~#queue~0.offset| 3204)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 3208 |c_~#queue~0.offset|)) 2147483647))) (= .cse3 800)))) is different from false [2022-11-20 10:31:33,877 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ (* 4 |c_t1Thread1of1ForFork1_enqueue_#t~mem36#1|) |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_338)) (.cse4 (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse1 (+ 3208 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse2 (select .cse0 .cse4))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_341) (= .cse2 800) (< (select (let ((.cse3 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse0 .cse1 v_ArrVal_341) .cse4 (+ .cse2 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse3 (+ (* (select .cse3 (+ |c_~#queue~0.offset| 3204)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 3208 |c_~#queue~0.offset|)) 2147483647))))) is different from false [2022-11-20 10:31:33,924 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int)) (let ((.cse1 (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|))) (or (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse0 .cse1))) (forall ((v_ArrVal_345 Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse2 (store .cse0 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4) |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_338))) (let ((.cse3 (+ 3208 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|)) (.cse4 (select .cse2 .cse1))) (or (< (+ 1 (select .cse2 .cse3)) v_ArrVal_341) (= .cse4 800) (< (select (let ((.cse5 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse2 .cse3 v_ArrVal_341) .cse1 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse5 (+ (* (select .cse5 (+ |c_~#queue~0.offset| 3204)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 3208 |c_~#queue~0.offset|)) 2147483647)))))))) is different from false [2022-11-20 10:31:33,999 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_345 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int)) (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_#in~q#1.base|))) (let ((.cse3 (store .cse0 (+ |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset| (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4)) v_ArrVal_338)) (.cse1 (+ |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset| 3204))) (let ((.cse5 (select .cse3 .cse1)) (.cse4 (+ 3208 |c_t1Thread1of1ForFork1_enqueue_#in~q#1.offset|))) (or (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse0 .cse1))) (< (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_#in~q#1.base| (store (store .cse3 .cse4 v_ArrVal_341) .cse1 (+ .cse5 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse2 (+ (* (select .cse2 (+ |c_~#queue~0.offset| 3204)) 4) |c_~#queue~0.offset|) v_ArrVal_345)) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (= 800 .cse5) (< (+ (select .cse3 .cse4) 1) v_ArrVal_341)))))) is different from false [2022-11-20 10:31:42,677 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_337 (Array Int Int)) (v_ArrVal_345 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| Int) (v_ArrVal_341 Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_338 Int) (v_ArrVal_336 Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_init_~q#1.base|) (+ 3208 |c_ULTIMATE.start_init_~q#1.offset|) v_ArrVal_336)) |c_ULTIMATE.start_main_~#id1~0#1.base| v_ArrVal_337))) (let ((.cse6 (select .cse2 |c_~#queue~0.base|))) (let ((.cse3 (store .cse6 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| 4) |c_~#queue~0.offset|) v_ArrVal_338)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (let ((.cse4 (+ 3208 |c_~#queue~0.offset|)) (.cse5 (select .cse3 .cse1))) (or (not (<= v_ArrVal_336 0)) (< (select (let ((.cse0 (select (store (store .cse2 |c_~#queue~0.base| (store (store .cse3 .cse4 v_ArrVal_341) .cse1 (+ .cse5 1))) |c_~#stored_elements~0.base| v_ArrVal_344) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_345)) .cse4) 2147483647) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_15| (select .cse6 .cse1))) (< (+ (select .cse3 .cse4) 1) v_ArrVal_341) (= .cse5 800))))))) is different from false [2022-11-20 10:31:42,706 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:31:42,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 194 [2022-11-20 10:31:42,725 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:31:42,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 314 treesize of output 306 [2022-11-20 10:31:42,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 206 treesize of output 182 [2022-11-20 10:31:42,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 167 [2022-11-20 10:31:42,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 10:31:43,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:31:43,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 207 treesize of output 215 [2022-11-20 10:31:45,119 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:31:45,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 43 [2022-11-20 10:31:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-11-20 10:31:45,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603818605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:31:45,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:31:45,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 29] total 79 [2022-11-20 10:31:45,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867896362] [2022-11-20 10:31:45,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:31:45,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-11-20 10:31:45,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:45,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-11-20 10:31:45,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=639, Invalid=4327, Unknown=40, NotChecked=1314, Total=6320 [2022-11-20 10:31:45,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 251 [2022-11-20 10:31:45,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 1305 flow. Second operand has 80 states, 80 states have (on average 160.1375) internal successors, (12811), 80 states have internal predecessors, (12811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:45,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:45,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 251 [2022-11-20 10:31:45,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:55,961 INFO L130 PetriNetUnfolder]: 748/3809 cut-off events. [2022-11-20 10:31:55,961 INFO L131 PetriNetUnfolder]: For 2287/2291 co-relation queries the response was YES. [2022-11-20 10:31:55,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7608 conditions, 3809 events. 748/3809 cut-off events. For 2287/2291 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 28194 event pairs, 364 based on Foata normal form. 10/3602 useless extension candidates. Maximal degree in co-relation 7455. Up to 751 conditions per place. [2022-11-20 10:31:55,997 INFO L137 encePairwiseOnDemand]: 217/251 looper letters, 192 selfloop transitions, 100 changer transitions 0/443 dead transitions. [2022-11-20 10:31:55,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 443 transitions, 2651 flow [2022-11-20 10:31:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-20 10:31:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-11-20 10:31:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8794 transitions. [2022-11-20 10:31:56,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6488121587723181 [2022-11-20 10:31:56,018 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8794 transitions. [2022-11-20 10:31:56,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8794 transitions. [2022-11-20 10:31:56,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:56,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8794 transitions. [2022-11-20 10:31:56,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 162.85185185185185) internal successors, (8794), 54 states have internal predecessors, (8794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:56,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 251.0) internal successors, (13805), 55 states have internal predecessors, (13805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:56,068 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 251.0) internal successors, (13805), 55 states have internal predecessors, (13805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:56,068 INFO L175 Difference]: Start difference. First operand has 337 places, 292 transitions, 1305 flow. Second operand 54 states and 8794 transitions. [2022-11-20 10:31:56,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 443 transitions, 2651 flow [2022-11-20 10:31:56,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 443 transitions, 2600 flow, removed 9 selfloop flow, removed 13 redundant places. [2022-11-20 10:31:56,091 INFO L231 Difference]: Finished difference. Result has 397 places, 360 transitions, 2129 flow [2022-11-20 10:31:56,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2129, PETRI_PLACES=397, PETRI_TRANSITIONS=360} [2022-11-20 10:31:56,092 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 164 predicate places. [2022-11-20 10:31:56,092 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 360 transitions, 2129 flow [2022-11-20 10:31:56,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 160.1375) internal successors, (12811), 80 states have internal predecessors, (12811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:31:56,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:56,097 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:56,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:31:56,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:56,302 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:31:56,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:56,303 INFO L85 PathProgramCache]: Analyzing trace with hash 453973176, now seen corresponding path program 1 times [2022-11-20 10:31:56,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:56,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457120407] [2022-11-20 10:31:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:56,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:57,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457120407] [2022-11-20 10:31:57,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457120407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:31:57,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480765406] [2022-11-20 10:31:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:57,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:57,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:57,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:57,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:31:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:31:57,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 10:31:57,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:31:58,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 10:31:58,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-20 10:31:58,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:58,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 10:31:59,379 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-20 10:31:59,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-20 10:31:59,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 10:31:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:31:59,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:32:00,027 WARN L837 $PredicateComparison]: unable to prove that (forall ((|t1Thread1of1ForFork1_enqueue_#t~mem36#1| Int) (v_ArrVal_407 (Array Int Int)) (v_ArrVal_408 Int)) (or (< (+ v_ArrVal_408 2147483648) 0) (< 0 (+ 2147483650 (select (store (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_407) |c_~#queue~0.base|) (+ |c_~#queue~0.offset| (* 4 |t1Thread1of1ForFork1_enqueue_#t~mem36#1|)) v_ArrVal_408) (+ 3208 |c_~#queue~0.offset|)))))) is different from false [2022-11-20 10:32:00,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:32:00,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 42 [2022-11-20 10:32:00,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:32:00,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 60 [2022-11-20 10:32:00,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-20 10:32:00,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-20 10:32:00,394 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:32:00,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 48 [2022-11-20 10:32:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:00,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480765406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:32:00,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:32:00,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 49 [2022-11-20 10:32:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263144691] [2022-11-20 10:32:00,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:32:00,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 10:32:00,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 10:32:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=2112, Unknown=5, NotChecked=94, Total=2450 [2022-11-20 10:32:00,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 251 [2022-11-20 10:32:00,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 360 transitions, 2129 flow. Second operand has 50 states, 50 states have (on average 181.1) internal successors, (9055), 50 states have internal predecessors, (9055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:00,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:32:00,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 251 [2022-11-20 10:32:00,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:32:06,419 INFO L130 PetriNetUnfolder]: 1226/7257 cut-off events. [2022-11-20 10:32:06,419 INFO L131 PetriNetUnfolder]: For 4450/4451 co-relation queries the response was YES. [2022-11-20 10:32:06,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13959 conditions, 7257 events. 1226/7257 cut-off events. For 4450/4451 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 68301 event pairs, 421 based on Foata normal form. 22/6916 useless extension candidates. Maximal degree in co-relation 13795. Up to 1123 conditions per place. [2022-11-20 10:32:06,523 INFO L137 encePairwiseOnDemand]: 227/251 looper letters, 195 selfloop transitions, 124 changer transitions 0/508 dead transitions. [2022-11-20 10:32:06,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 508 transitions, 3586 flow [2022-11-20 10:32:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 10:32:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 10:32:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5002 transitions. [2022-11-20 10:32:06,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7380846982440608 [2022-11-20 10:32:06,533 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5002 transitions. [2022-11-20 10:32:06,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5002 transitions. [2022-11-20 10:32:06,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:32:06,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5002 transitions. [2022-11-20 10:32:06,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 185.25925925925927) internal successors, (5002), 27 states have internal predecessors, (5002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:06,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 251.0) internal successors, (7028), 28 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:06,559 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 251.0) internal successors, (7028), 28 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:06,560 INFO L175 Difference]: Start difference. First operand has 397 places, 360 transitions, 2129 flow. Second operand 27 states and 5002 transitions. [2022-11-20 10:32:06,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 508 transitions, 3586 flow [2022-11-20 10:32:06,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 508 transitions, 3079 flow, removed 210 selfloop flow, removed 24 redundant places. [2022-11-20 10:32:06,614 INFO L231 Difference]: Finished difference. Result has 409 places, 418 transitions, 2542 flow [2022-11-20 10:32:06,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2542, PETRI_PLACES=409, PETRI_TRANSITIONS=418} [2022-11-20 10:32:06,616 INFO L288 CegarLoopForPetriNet]: 233 programPoint places, 176 predicate places. [2022-11-20 10:32:06,616 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 418 transitions, 2542 flow [2022-11-20 10:32:06,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 181.1) internal successors, (9055), 50 states have internal predecessors, (9055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:06,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:32:06,619 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:06,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:32:06,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:06,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2022-11-20 10:32:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash -916173708, now seen corresponding path program 1 times [2022-11-20 10:32:06,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:06,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16705894] [2022-11-20 10:32:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:06,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:10,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16705894] [2022-11-20 10:32:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16705894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:32:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458683492] [2022-11-20 10:32:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:10,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:32:10,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:10,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:32:10,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844ab89a-c558-4631-b1c0-0c56d369f838/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:32:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:10,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-20 10:32:10,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:32:11,100 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:32:11,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:32:11,182 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:32:11,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:32:11,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 10:32:11,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 10:32:12,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 10:32:12,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 10:32:13,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:32:13,439 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 10:32:13,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 10:32:13,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:13,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:32:13,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2022-11-20 10:32:14,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2022-11-20 10:32:14,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:32:14,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 10:32:15,212 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-20 10:32:15,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 39 [2022-11-20 10:32:15,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 10:32:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:15,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:32:15,819 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_485 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| Int) (v_ArrVal_483 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_483) |c_~#queue~0.base|))) (or (< (select (store .cse0 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| 4) |c_~#queue~0.offset|) v_ArrVal_485) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| (select .cse0 (+ |c_~#queue~0.offset| 3204))))))) is different from false [2022-11-20 10:32:15,921 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_485 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| Int) (v_ArrVal_481 Int) (v_ArrVal_483 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_481)) |c_~#stored_elements~0.base| v_ArrVal_483) |c_~#queue~0.base|))) (or (< (select (store .cse0 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| 4) |c_~#queue~0.offset|) v_ArrVal_485) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| (select .cse0 (+ |c_~#queue~0.offset| 3204)))) (not (<= v_ArrVal_481 (+ |c_t1Thread1of1ForFork1_enqueue_#t~post41#1| 1)))))) is different from false [2022-11-20 10:32:16,505 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_485 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| Int) (v_ArrVal_481 Int) (v_ArrVal_483 (Array Int Int))) (let ((.cse1 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse2 (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store .cse1 .cse2 v_ArrVal_481)) |c_~#stored_elements~0.base| v_ArrVal_483) |c_~#queue~0.base|))) (or (< (select (store .cse0 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| 4) |c_~#queue~0.offset|) v_ArrVal_485) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (< (+ (select .cse1 .cse2) 1) v_ArrVal_481) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| (select .cse0 (+ |c_~#queue~0.offset| 3204)))))))) is different from false [2022-11-20 10:32:16,649 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_485 Int) (|v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| Int) (v_ArrVal_481 Int) (v_ArrVal_483 (Array Int Int)) (v_ArrVal_479 Int)) (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base|)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|))) (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork1_enqueue_~q#1.base| (store (store .cse0 (+ 3208 |c_t1Thread1of1ForFork1_enqueue_~q#1.offset|) v_ArrVal_479) .cse1 v_ArrVal_481)) |c_~#stored_elements~0.base| v_ArrVal_483) |c_~#queue~0.base|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_481) (not (<= |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| (select .cse2 (+ |c_~#queue~0.offset| 3204)))) (< (select (store .cse2 (+ (* |v_t1Thread1of1ForFork1_enqueue_#t~mem36#1_26| 4) |c_~#queue~0.offset|) v_ArrVal_485) (+ 3208 |c_~#queue~0.offset|)) 2147483647) (not (<= v_ArrVal_479 (+ |c_t1Thread1of1ForFork1_enqueue_#t~post38#1| 1))))))) is different from false