./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.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_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/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_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/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_476b3362-e3d7-4f67-93a1-24194f7b1707/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 e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- 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 10:32:56,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:32:56,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:32:56,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:32:56,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:32:56,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:32:56,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:32:56,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:32:56,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:32:56,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:32:56,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:32:56,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:32:56,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:32:56,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:32:56,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:32:56,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:32:56,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:32:56,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:32:56,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:32:56,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:32:56,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:32:56,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:32:56,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:32:56,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:32:56,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:32:56,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:32:56,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:32:56,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:32:56,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:32:56,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:32:56,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:32:56,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:32:56,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:32:56,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:32:56,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:32:56,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:32:56,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:32:56,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:32:56,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:32:56,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:32:56,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:32:56,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:32:56,462 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:32:56,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:32:56,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:32:56,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:32:56,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:32:56,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:32:56,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:32:56,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:32:56,466 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:32:56,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:32:56,468 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:32:56,468 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:32:56,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:32:56,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:32:56,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:32:56,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:32:56,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:32:56,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:32:56,469 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:32:56,470 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:32:56,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:32:56,470 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:32:56,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:32:56,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:32:56,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:32:56,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:32:56,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:56,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:32:56,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:32:56,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:32:56,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:32:56,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:32:56,473 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:32:56,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:32:56,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:32:56,474 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_476b3362-e3d7-4f67-93a1-24194f7b1707/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2022-11-20 10:32:56,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:32:56,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:32:56,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:32:56,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:32:56,858 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:32:56,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/stateful01-2.i [2022-11-20 10:33:00,284 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:00,569 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:00,570 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/sv-benchmarks/c/pthread/stateful01-2.i [2022-11-20 10:33:00,592 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/data/cd7082de4/312f52c095f04bd58c7ce518afb6eefb/FLAG6efc63504 [2022-11-20 10:33:00,614 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/data/cd7082de4/312f52c095f04bd58c7ce518afb6eefb [2022-11-20 10:33:00,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:00,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:00,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:00,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:00,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:00,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:00" (1/1) ... [2022-11-20 10:33:00,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a07e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:00, skipping insertion in model container [2022-11-20 10:33:00,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:00" (1/1) ... [2022-11-20 10:33:00,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:00,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:01,117 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_476b3362-e3d7-4f67-93a1-24194f7b1707/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2022-11-20 10:33:01,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:01,142 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:33:01,222 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_476b3362-e3d7-4f67-93a1-24194f7b1707/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2022-11-20 10:33:01,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:01,289 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:33:01,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01 WrapperNode [2022-11-20 10:33:01,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:01,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:01,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:33:01,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:33:01,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,381 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-11-20 10:33:01,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:01,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:33:01,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:33:01,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:33:01,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,409 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:33:01,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:33:01,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:33:01,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:33:01,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (1/1) ... [2022-11-20 10:33:01,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:01,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:01,474 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:33:01,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:33:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:33:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 10:33:01,539 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 10:33:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 10:33:01,539 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 10:33:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:33:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:33:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:33:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:33:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:33:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:33:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:33:01,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:33:01,542 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 10:33:01,701 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:33:01,703 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:33:02,070 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:33:02,080 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:33:02,081 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:33:02,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:02 BoogieIcfgContainer [2022-11-20 10:33:02,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:33:02,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:33:02,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:33:02,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:33:02,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:00" (1/3) ... [2022-11-20 10:33:02,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a978fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:02, skipping insertion in model container [2022-11-20 10:33:02,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:01" (2/3) ... [2022-11-20 10:33:02,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a978fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:02, skipping insertion in model container [2022-11-20 10:33:02,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:02" (3/3) ... [2022-11-20 10:33:02,095 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2022-11-20 10:33:02,106 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:33:02,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:33:02,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 10:33:02,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:33:02,234 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:33:02,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 108 transitions, 232 flow [2022-11-20 10:33:02,366 INFO L130 PetriNetUnfolder]: 1/106 cut-off events. [2022-11-20 10:33:02,366 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:33:02,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 1/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2022-11-20 10:33:02,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 108 transitions, 232 flow [2022-11-20 10:33:02,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 92 transitions, 193 flow [2022-11-20 10:33:02,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:33:02,398 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;@201f02d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:33:02,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-20 10:33:02,418 INFO L130 PetriNetUnfolder]: 0/46 cut-off events. [2022-11-20 10:33:02,418 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:33:02,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:02,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:02,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:02,427 INFO L85 PathProgramCache]: Analyzing trace with hash 773751333, now seen corresponding path program 1 times [2022-11-20 10:33:02,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:02,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465162693] [2022-11-20 10:33:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:02,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:02,888 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 10:33:02,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:02,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465162693] [2022-11-20 10:33:02,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465162693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:02,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:02,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961179967] [2022-11-20 10:33:02,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:02,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:02,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:02,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:03,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:03,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 10:33:03,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:03,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:03,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:03,268 INFO L130 PetriNetUnfolder]: 36/320 cut-off events. [2022-11-20 10:33:03,269 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-20 10:33:03,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 320 events. 36/320 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1537 event pairs, 12 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 353. Up to 37 conditions per place. [2022-11-20 10:33:03,274 INFO L137 encePairwiseOnDemand]: 99/108 looper letters, 35 selfloop transitions, 10 changer transitions 0/120 dead transitions. [2022-11-20 10:33:03,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 120 transitions, 351 flow [2022-11-20 10:33:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:33:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2022-11-20 10:33:03,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8870370370370371 [2022-11-20 10:33:03,295 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2022-11-20 10:33:03,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2022-11-20 10:33:03,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:03,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2022-11-20 10:33:03,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 10:33:03,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 10:33:03,314 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 10:33:03,316 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 193 flow. Second operand 5 states and 479 transitions. [2022-11-20 10:33:03,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 120 transitions, 351 flow [2022-11-20 10:33:03,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 120 transitions, 341 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:33:03,325 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 270 flow [2022-11-20 10:33:03,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2022-11-20 10:33:03,330 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2022-11-20 10:33:03,331 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 270 flow [2022-11-20 10:33:03,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 10:33:03,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:03,332 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] [2022-11-20 10:33:03,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:33:03,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:03,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1783512197, now seen corresponding path program 1 times [2022-11-20 10:33:03,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:03,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777224882] [2022-11-20 10:33:03,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,530 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 10:33:03,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:03,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777224882] [2022-11-20 10:33:03,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777224882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:03,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:03,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:03,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044961597] [2022-11-20 10:33:03,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:03,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:03,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:03,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:03,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:03,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:03,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 10:33:03,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:03,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:03,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:03,649 INFO L130 PetriNetUnfolder]: 25/246 cut-off events. [2022-11-20 10:33:03,650 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-20 10:33:03,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 246 events. 25/246 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1032 event pairs, 7 based on Foata normal form. 13/238 useless extension candidates. Maximal degree in co-relation 282. Up to 41 conditions per place. [2022-11-20 10:33:03,657 INFO L137 encePairwiseOnDemand]: 103/108 looper letters, 20 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2022-11-20 10:33:03,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 306 flow [2022-11-20 10:33:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:33:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:33:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2022-11-20 10:33:03,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8495370370370371 [2022-11-20 10:33:03,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2022-11-20 10:33:03,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2022-11-20 10:33:03,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:03,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2022-11-20 10:33:03,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 10:33:03,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:03,670 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:03,670 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 270 flow. Second operand 4 states and 367 transitions. [2022-11-20 10:33:03,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 306 flow [2022-11-20 10:33:03,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:33:03,678 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 243 flow [2022-11-20 10:33:03,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2022-11-20 10:33:03,681 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2022-11-20 10:33:03,682 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 243 flow [2022-11-20 10:33:03,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 10:33:03,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:03,683 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] [2022-11-20 10:33:03,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:33:03,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:03,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:03,687 INFO L85 PathProgramCache]: Analyzing trace with hash 564995370, now seen corresponding path program 1 times [2022-11-20 10:33:03,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:03,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709790197] [2022-11-20 10:33:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:03,904 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 10:33:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:03,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709790197] [2022-11-20 10:33:03,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709790197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:03,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:03,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:03,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206043392] [2022-11-20 10:33:03,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:03,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:03,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:03,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:03,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:03,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 10:33:03,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:03,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:03,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:04,029 INFO L130 PetriNetUnfolder]: 50/248 cut-off events. [2022-11-20 10:33:04,030 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-20 10:33:04,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 248 events. 50/248 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 916 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 316. Up to 57 conditions per place. [2022-11-20 10:33:04,032 INFO L137 encePairwiseOnDemand]: 101/108 looper letters, 23 selfloop transitions, 7 changer transitions 4/112 dead transitions. [2022-11-20 10:33:04,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 112 transitions, 352 flow [2022-11-20 10:33:04,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:33:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2022-11-20 10:33:04,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8648148148148148 [2022-11-20 10:33:04,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2022-11-20 10:33:04,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2022-11-20 10:33:04,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:04,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2022-11-20 10:33:04,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 10:33:04,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 10:33:04,040 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 10:33:04,040 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 243 flow. Second operand 5 states and 467 transitions. [2022-11-20 10:33:04,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 112 transitions, 352 flow [2022-11-20 10:33:04,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 112 transitions, 342 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:33:04,046 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 273 flow [2022-11-20 10:33:04,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2022-11-20 10:33:04,049 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 9 predicate places. [2022-11-20 10:33:04,050 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 273 flow [2022-11-20 10:33:04,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 10:33:04,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:04,051 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] [2022-11-20 10:33:04,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:33:04,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash 334987552, now seen corresponding path program 1 times [2022-11-20 10:33:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292901730] [2022-11-20 10:33:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:04,222 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 10:33:04,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:04,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292901730] [2022-11-20 10:33:04,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292901730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:04,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:04,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:04,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015750105] [2022-11-20 10:33:04,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:04,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:04,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:04,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:04,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:04,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 10:33:04,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:04,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:04,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:04,330 INFO L130 PetriNetUnfolder]: 34/231 cut-off events. [2022-11-20 10:33:04,331 INFO L131 PetriNetUnfolder]: For 87/99 co-relation queries the response was YES. [2022-11-20 10:33:04,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 231 events. 34/231 cut-off events. For 87/99 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 825 event pairs, 5 based on Foata normal form. 10/232 useless extension candidates. Maximal degree in co-relation 277. Up to 41 conditions per place. [2022-11-20 10:33:04,332 INFO L137 encePairwiseOnDemand]: 101/108 looper letters, 15 selfloop transitions, 4 changer transitions 11/108 dead transitions. [2022-11-20 10:33:04,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 366 flow [2022-11-20 10:33:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:33:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2022-11-20 10:33:04,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592592592592593 [2022-11-20 10:33:04,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2022-11-20 10:33:04,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2022-11-20 10:33:04,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:04,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2022-11-20 10:33:04,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 10:33:04,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 10:33:04,344 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 10:33:04,344 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 273 flow. Second operand 5 states and 464 transitions. [2022-11-20 10:33:04,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 366 flow [2022-11-20 10:33:04,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 108 transitions, 338 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 10:33:04,353 INFO L231 Difference]: Finished difference. Result has 108 places, 94 transitions, 263 flow [2022-11-20 10:33:04,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=108, PETRI_TRANSITIONS=94} [2022-11-20 10:33:04,355 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 9 predicate places. [2022-11-20 10:33:04,360 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 263 flow [2022-11-20 10:33:04,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 10:33:04,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:04,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:04,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:33:04,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1367224928, now seen corresponding path program 1 times [2022-11-20 10:33:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:04,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134528826] [2022-11-20 10:33:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:04,598 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 10:33:04,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:04,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134528826] [2022-11-20 10:33:04,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134528826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:04,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:04,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:04,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953488195] [2022-11-20 10:33:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:04,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:04,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:04,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:04,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:04,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:04,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 94 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 10:33:04,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:04,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:04,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:04,678 INFO L130 PetriNetUnfolder]: 11/194 cut-off events. [2022-11-20 10:33:04,678 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-20 10:33:04,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 194 events. 11/194 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 524 event pairs, 5 based on Foata normal form. 8/202 useless extension candidates. Maximal degree in co-relation 222. Up to 31 conditions per place. [2022-11-20 10:33:04,680 INFO L137 encePairwiseOnDemand]: 100/108 looper letters, 13 selfloop transitions, 8 changer transitions 0/95 dead transitions. [2022-11-20 10:33:04,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 95 transitions, 306 flow [2022-11-20 10:33:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:33:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2022-11-20 10:33:04,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8734567901234568 [2022-11-20 10:33:04,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2022-11-20 10:33:04,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2022-11-20 10:33:04,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:04,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2022-11-20 10:33:04,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 10:33:04,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,686 INFO L175 Difference]: Start difference. First operand has 108 places, 94 transitions, 263 flow. Second operand 3 states and 283 transitions. [2022-11-20 10:33:04,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 95 transitions, 306 flow [2022-11-20 10:33:04,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 95 transitions, 287 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-20 10:33:04,694 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 254 flow [2022-11-20 10:33:04,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2022-11-20 10:33:04,697 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 6 predicate places. [2022-11-20 10:33:04,698 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 254 flow [2022-11-20 10:33:04,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 10:33:04,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:04,699 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] [2022-11-20 10:33:04,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:33:04,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1892900268, now seen corresponding path program 1 times [2022-11-20 10:33:04,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:04,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033157058] [2022-11-20 10:33:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:04,836 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 10:33:04,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:04,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033157058] [2022-11-20 10:33:04,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033157058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:04,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:04,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:04,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120638054] [2022-11-20 10:33:04,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:04,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:04,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:04,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:04,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:04,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states 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 10:33:04,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:04,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:04,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:04,915 INFO L130 PetriNetUnfolder]: 12/188 cut-off events. [2022-11-20 10:33:04,916 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-11-20 10:33:04,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 188 events. 12/188 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 536 event pairs, 5 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 219. Up to 24 conditions per place. [2022-11-20 10:33:04,917 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 17 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2022-11-20 10:33:04,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 99 transitions, 320 flow [2022-11-20 10:33:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:33:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2022-11-20 10:33:04,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8293650793650794 [2022-11-20 10:33:04,920 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2022-11-20 10:33:04,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2022-11-20 10:33:04,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:04,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2022-11-20 10:33:04,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:04,925 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 254 flow. Second operand 7 states and 627 transitions. [2022-11-20 10:33:04,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 99 transitions, 320 flow [2022-11-20 10:33:04,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 99 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:33:04,928 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 258 flow [2022-11-20 10:33:04,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=258, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2022-11-20 10:33:04,931 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 10 predicate places. [2022-11-20 10:33:04,932 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 258 flow [2022-11-20 10:33:04,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states 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 10:33:04,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:04,932 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] [2022-11-20 10:33:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:33:04,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:04,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1459472573, now seen corresponding path program 1 times [2022-11-20 10:33:04,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:04,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728932062] [2022-11-20 10:33:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:05,052 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 10:33:05,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:05,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728932062] [2022-11-20 10:33:05,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728932062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:05,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:05,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:05,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614573493] [2022-11-20 10:33:05,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:05,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:05,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:05,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:05,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:05,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 10:33:05,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:05,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:05,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:05,132 INFO L130 PetriNetUnfolder]: 12/188 cut-off events. [2022-11-20 10:33:05,132 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 10:33:05,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 188 events. 12/188 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 487 event pairs, 3 based on Foata normal form. 3/191 useless extension candidates. Maximal degree in co-relation 219. Up to 17 conditions per place. [2022-11-20 10:33:05,133 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 19 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-11-20 10:33:05,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 327 flow [2022-11-20 10:33:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:33:05,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 10:33:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2022-11-20 10:33:05,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8364197530864198 [2022-11-20 10:33:05,136 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 542 transitions. [2022-11-20 10:33:05,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 542 transitions. [2022-11-20 10:33:05,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:05,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 542 transitions. [2022-11-20 10:33:05,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 10:33:05,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 10:33:05,143 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 10:33:05,143 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 258 flow. Second operand 6 states and 542 transitions. [2022-11-20 10:33:05,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 327 flow [2022-11-20 10:33:05,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 99 transitions, 309 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-20 10:33:05,148 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 248 flow [2022-11-20 10:33:05,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2022-11-20 10:33:05,149 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 9 predicate places. [2022-11-20 10:33:05,149 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 248 flow [2022-11-20 10:33:05,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 10:33:05,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:05,150 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] [2022-11-20 10:33:05,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:33:05,150 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash 799770908, now seen corresponding path program 1 times [2022-11-20 10:33:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:05,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409350979] [2022-11-20 10:33:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:05,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:05,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409350979] [2022-11-20 10:33:05,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409350979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:05,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:05,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:33:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14238901] [2022-11-20 10:33:05,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:05,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:05,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:05,277 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:05,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 10:33:05,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:05,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:05,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:05,335 INFO L130 PetriNetUnfolder]: 11/172 cut-off events. [2022-11-20 10:33:05,335 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-20 10:33:05,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 172 events. 11/172 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 435 event pairs, 6 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 180. Up to 29 conditions per place. [2022-11-20 10:33:05,336 INFO L137 encePairwiseOnDemand]: 104/108 looper letters, 8 selfloop transitions, 2 changer transitions 11/91 dead transitions. [2022-11-20 10:33:05,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 91 transitions, 280 flow [2022-11-20 10:33:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:33:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 10:33:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-11-20 10:33:05,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-20 10:33:05,339 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-11-20 10:33:05,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-11-20 10:33:05,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:05,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-11-20 10:33:05,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states 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 10:33:05,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:05,342 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:05,342 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 248 flow. Second operand 4 states and 360 transitions. [2022-11-20 10:33:05,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 91 transitions, 280 flow [2022-11-20 10:33:05,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 91 transitions, 262 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 10:33:05,345 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 200 flow [2022-11-20 10:33:05,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-11-20 10:33:05,346 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2022-11-20 10:33:05,346 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 200 flow [2022-11-20 10:33:05,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 10:33:05,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:33:05,347 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] [2022-11-20 10:33:05,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:33:05,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-20 10:33:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1710742397, now seen corresponding path program 1 times [2022-11-20 10:33:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:05,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381060770] [2022-11-20 10:33:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:05,453 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 10:33:05,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:05,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381060770] [2022-11-20 10:33:05,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381060770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:05,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:05,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:05,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696504004] [2022-11-20 10:33:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:05,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:05,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:05,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:05,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2022-11-20 10:33:05,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 10:33:05,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:33:05,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2022-11-20 10:33:05,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:33:05,493 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-11-20 10:33:05,494 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 10:33:05,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 109 events. 2/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 148. Up to 8 conditions per place. [2022-11-20 10:33:05,494 INFO L137 encePairwiseOnDemand]: 104/108 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-11-20 10:33:05,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 79 transitions, 214 flow [2022-11-20 10:33:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:33:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-11-20 10:33:05,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-11-20 10:33:05,497 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-11-20 10:33:05,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-11-20 10:33:05,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:33:05,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-11-20 10:33:05,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 10:33:05,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 10:33:05,501 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 10:33:05,501 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 200 flow. Second operand 5 states and 440 transitions. [2022-11-20 10:33:05,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 79 transitions, 214 flow [2022-11-20 10:33:05,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 79 transitions, 209 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:33:05,503 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2022-11-20 10:33:05,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2022-11-20 10:33:05,504 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2022-11-20 10:33:05,504 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2022-11-20 10:33:05,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 10:33:05,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-20 10:33:05,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-20 10:33:05,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-20 10:33:05,508 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-20 10:33:05,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-20 10:33:05,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-20 10:33:05,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-20 10:33:05,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-20 10:33:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-20 10:33:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-20 10:33:05,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-20 10:33:05,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-20 10:33:05,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-20 10:33:05,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-20 10:33:05,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-20 10:33:05,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-20 10:33:05,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-20 10:33:05,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-20 10:33:05,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:33:05,513 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:05,519 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 10:33:05,519 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:33:05,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:33:05 BasicIcfg [2022-11-20 10:33:05,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:33:05,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:33:05,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:33:05,526 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:33:05,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:02" (3/4) ... [2022-11-20 10:33:05,529 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:33:05,536 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 10:33:05,536 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 10:33:05,542 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 10:33:05,543 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 10:33:05,543 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:33:05,543 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:33:05,589 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:33:05,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:33:05,590 INFO L158 Benchmark]: Toolchain (without parser) took 4967.66ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 115.4MB in the beginning and 110.8MB in the end (delta: 4.6MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-11-20 10:33:05,590 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:33:05,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 666.75ms. Allocated memory is still 163.6MB. Free memory was 115.4MB in the beginning and 96.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 10:33:05,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.29ms. Allocated memory is still 163.6MB. Free memory was 96.1MB in the beginning and 94.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:33:05,591 INFO L158 Benchmark]: Boogie Preprocessor took 31.07ms. Allocated memory is still 163.6MB. Free memory was 94.1MB in the beginning and 92.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:33:05,591 INFO L158 Benchmark]: RCFGBuilder took 669.21ms. Allocated memory is still 163.6MB. Free memory was 92.4MB in the beginning and 130.1MB in the end (delta: -37.7MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2022-11-20 10:33:05,592 INFO L158 Benchmark]: TraceAbstraction took 3438.36ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 129.4MB in the beginning and 114.0MB in the end (delta: 15.4MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2022-11-20 10:33:05,592 INFO L158 Benchmark]: Witness Printer took 63.94ms. Allocated memory is still 197.1MB. Free memory was 114.0MB in the beginning and 110.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:33:05,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 666.75ms. Allocated memory is still 163.6MB. Free memory was 115.4MB in the beginning and 96.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.29ms. Allocated memory is still 163.6MB. Free memory was 96.1MB in the beginning and 94.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.07ms. Allocated memory is still 163.6MB. Free memory was 94.1MB in the beginning and 92.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 669.21ms. Allocated memory is still 163.6MB. Free memory was 92.4MB in the beginning and 130.1MB in the end (delta: -37.7MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3438.36ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 129.4MB in the beginning and 114.0MB in the end (delta: 15.4MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. * Witness Printer took 63.94ms. Allocated memory is still 197.1MB. Free memory was 114.0MB in the beginning and 110.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 154 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 144 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 268 IncrementalHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 44 mSDtfsCounter, 268 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 500 NumberOfCodeBlocks, 500 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 491 ConstructedInterpolants, 0 QuantifiedInterpolants, 845 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:33:05,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476b3362-e3d7-4f67-93a1-24194f7b1707/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE