./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/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_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/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_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- 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 11:57:02,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:57:02,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:57:02,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:57:02,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:57:02,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:57:02,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:57:02,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:57:02,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:57:02,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:57:02,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:57:02,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:57:02,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:57:02,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:57:02,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:57:02,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:57:02,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:57:02,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:57:02,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:57:02,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:57:02,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:57:02,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:57:02,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:57:02,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:57:02,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:57:02,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:57:02,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:57:02,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:57:02,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:57:02,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:57:02,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:57:02,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:57:02,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:57:02,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:57:02,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:57:02,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:57:02,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:57:02,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:57:02,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:57:02,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:57:02,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:57:02,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:57:02,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:57:02,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:57:02,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:57:02,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:57:02,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:57:02,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:57:02,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:57:02,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:57:02,726 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:57:02,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:57:02,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:57:02,728 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:57:02,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:57:02,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:57:02,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:57:02,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:57:02,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:57:02,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:57:02,729 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:57:02,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:57:02,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:57:02,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:57:02,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:57:02,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:57:02,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:57:02,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:57:02,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:57:02,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:57:02,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:57:02,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:57:02,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:57:02,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:57:02,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:57:02,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:57:02,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:57:02,732 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_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2022-11-20 11:57:03,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:57:03,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:57:03,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:57:03,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:57:03,146 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:57:03,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-11-20 11:57:06,442 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:57:06,697 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:57:06,710 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-11-20 11:57:06,731 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/data/16223ef83/a5ea587611434ef79ff84aae1c824760/FLAGcf3e1d57a [2022-11-20 11:57:06,750 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/data/16223ef83/a5ea587611434ef79ff84aae1c824760 [2022-11-20 11:57:06,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:57:06,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:57:06,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:57:06,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:57:06,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:57:06,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:57:06" (1/1) ... [2022-11-20 11:57:06,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bda0bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:06, skipping insertion in model container [2022-11-20 11:57:06,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:57:06" (1/1) ... [2022-11-20 11:57:06,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:57:06,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:57:07,267 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_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-11-20 11:57:07,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:57:07,313 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:57:07,372 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_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2022-11-20 11:57:07,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:57:07,438 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:57:07,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07 WrapperNode [2022-11-20 11:57:07,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:57:07,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:57:07,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:57:07,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:57:07,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,523 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-20 11:57:07,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:57:07,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:57:07,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:57:07,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:57:07,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:57:07,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:57:07,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:57:07,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:57:07,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (1/1) ... [2022-11-20 11:57:07,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:57:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:07,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:57:07,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:57:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:57:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:57:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:57:07,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:57:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:57:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:57:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:57:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:57:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:57:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:57:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:57:07,691 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 11:57:07,874 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:57:07,893 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:57:08,257 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:57:08,265 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:57:08,266 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-20 11:57:08,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:08 BoogieIcfgContainer [2022-11-20 11:57:08,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:57:08,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:57:08,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:57:08,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:57:08,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:57:06" (1/3) ... [2022-11-20 11:57:08,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3437c4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:57:08, skipping insertion in model container [2022-11-20 11:57:08,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:57:07" (2/3) ... [2022-11-20 11:57:08,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3437c4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:57:08, skipping insertion in model container [2022-11-20 11:57:08,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:57:08" (3/3) ... [2022-11-20 11:57:08,280 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2022-11-20 11:57:08,291 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:57:08,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:57:08,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 11:57:08,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:57:08,363 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:57:08,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 117 transitions, 239 flow [2022-11-20 11:57:08,484 INFO L130 PetriNetUnfolder]: 14/150 cut-off events. [2022-11-20 11:57:08,506 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:57:08,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 14/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 357 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-11-20 11:57:08,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 117 transitions, 239 flow [2022-11-20 11:57:08,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 117 transitions, 239 flow [2022-11-20 11:57:08,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:57:08,536 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;@1ed7b6b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:57:08,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-20 11:57:08,585 INFO L130 PetriNetUnfolder]: 1/57 cut-off events. [2022-11-20 11:57:08,591 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:57:08,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:08,592 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] [2022-11-20 11:57:08,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:57:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:08,600 INFO L85 PathProgramCache]: Analyzing trace with hash 777604655, now seen corresponding path program 1 times [2022-11-20 11:57:08,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:08,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220510623] [2022-11-20 11:57:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:08,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:09,025 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 11:57:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:09,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220510623] [2022-11-20 11:57:09,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220510623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:09,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:09,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:09,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375982489] [2022-11-20 11:57:09,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:09,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:57:09,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:09,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:57:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:57:09,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 117 [2022-11-20 11:57:09,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 117 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 11:57:09,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:09,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 117 [2022-11-20 11:57:09,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:09,185 INFO L130 PetriNetUnfolder]: 0/108 cut-off events. [2022-11-20 11:57:09,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:57:09,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 108 events. 0/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 36/138 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-11-20 11:57:09,187 INFO L137 encePairwiseOnDemand]: 100/117 looper letters, 9 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2022-11-20 11:57:09,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 243 flow [2022-11-20 11:57:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:57:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:57:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 510 transitions. [2022-11-20 11:57:09,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2022-11-20 11:57:09,218 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 510 transitions. [2022-11-20 11:57:09,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 510 transitions. [2022-11-20 11:57:09,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:09,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 510 transitions. [2022-11-20 11:57:09,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 11:57:09,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 11:57:09,250 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 11:57:09,253 INFO L175 Difference]: Start difference. First operand has 110 places, 117 transitions, 239 flow. Second operand 5 states and 510 transitions. [2022-11-20 11:57:09,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 243 flow [2022-11-20 11:57:09,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 106 transitions, 243 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:57:09,269 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 225 flow [2022-11-20 11:57:09,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2022-11-20 11:57:09,277 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2022-11-20 11:57:09,277 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 225 flow [2022-11-20 11:57:09,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 11:57:09,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:09,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:09,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:57:09,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:57:09,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:09,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1551677139, now seen corresponding path program 1 times [2022-11-20 11:57:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:09,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317986297] [2022-11-20 11:57:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:09,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:10,296 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 11:57:10,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:10,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317986297] [2022-11-20 11:57:10,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317986297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:10,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:10,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:57:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816752017] [2022-11-20 11:57:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:10,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:57:10,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:57:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:57:10,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 117 [2022-11-20 11:57:10,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 225 flow. Second operand has 12 states, 12 states have (on average 61.5) internal successors, (738), 12 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 11:57:10,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:10,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 117 [2022-11-20 11:57:10,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:10,845 INFO L130 PetriNetUnfolder]: 97/456 cut-off events. [2022-11-20 11:57:10,845 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:57:10,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 456 events. 97/456 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2491 event pairs, 6 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 646. Up to 85 conditions per place. [2022-11-20 11:57:10,849 INFO L137 encePairwiseOnDemand]: 102/117 looper letters, 72 selfloop transitions, 22 changer transitions 2/153 dead transitions. [2022-11-20 11:57:10,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 153 transitions, 515 flow [2022-11-20 11:57:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:57:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:57:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1044 transitions. [2022-11-20 11:57:10,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2022-11-20 11:57:10,853 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1044 transitions. [2022-11-20 11:57:10,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1044 transitions. [2022-11-20 11:57:10,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:10,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1044 transitions. [2022-11-20 11:57:10,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 65.25) internal successors, (1044), 16 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 11:57:10,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 117.0) internal successors, (1989), 17 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states 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 11:57:10,862 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 117.0) internal successors, (1989), 17 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states 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 11:57:10,862 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 225 flow. Second operand 16 states and 1044 transitions. [2022-11-20 11:57:10,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 153 transitions, 515 flow [2022-11-20 11:57:10,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 153 transitions, 507 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:57:10,867 INFO L231 Difference]: Finished difference. Result has 127 places, 113 transitions, 311 flow [2022-11-20 11:57:10,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=311, PETRI_PLACES=127, PETRI_TRANSITIONS=113} [2022-11-20 11:57:10,868 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 17 predicate places. [2022-11-20 11:57:10,868 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 113 transitions, 311 flow [2022-11-20 11:57:10,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 61.5) internal successors, (738), 12 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 11:57:10,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:10,870 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:10,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:57:10,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-20 11:57:10,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:10,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1831731840, now seen corresponding path program 1 times [2022-11-20 11:57:10,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:10,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475808168] [2022-11-20 11:57:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:57:10,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:57:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:57:10,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:57:10,927 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:57:10,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-20 11:57:10,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2022-11-20 11:57:10,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2022-11-20 11:57:10,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2022-11-20 11:57:10,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2022-11-20 11:57:10,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2022-11-20 11:57:10,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2022-11-20 11:57:10,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2022-11-20 11:57:10,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2022-11-20 11:57:10,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2022-11-20 11:57:10,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2022-11-20 11:57:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:57:10,933 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 11:57:10,936 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:57:10,936 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:57:10,959 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:57:10,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 158 transitions, 328 flow [2022-11-20 11:57:10,996 INFO L130 PetriNetUnfolder]: 24/233 cut-off events. [2022-11-20 11:57:10,997 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:57:11,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 24/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 692 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2022-11-20 11:57:11,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 158 transitions, 328 flow [2022-11-20 11:57:11,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 158 transitions, 328 flow [2022-11-20 11:57:11,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:57:11,005 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;@1ed7b6b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:57:11,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-20 11:57:11,012 INFO L130 PetriNetUnfolder]: 1/57 cut-off events. [2022-11-20 11:57:11,012 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:57:11,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:11,012 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] [2022-11-20 11:57:11,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 11:57:11,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:11,013 INFO L85 PathProgramCache]: Analyzing trace with hash -116934377, now seen corresponding path program 1 times [2022-11-20 11:57:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:11,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118722956] [2022-11-20 11:57:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:11,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:11,072 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 11:57:11,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:11,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118722956] [2022-11-20 11:57:11,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118722956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:11,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:11,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:11,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390192340] [2022-11-20 11:57:11,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:11,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:57:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:57:11,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:57:11,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-20 11:57:11,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 158 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 11:57:11,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:11,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-20 11:57:11,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:11,144 INFO L130 PetriNetUnfolder]: 0/180 cut-off events. [2022-11-20 11:57:11,145 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:57:11,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 180 events. 0/180 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 385 event pairs, 0 based on Foata normal form. 103/269 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2022-11-20 11:57:11,146 INFO L137 encePairwiseOnDemand]: 135/158 looper letters, 17 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2022-11-20 11:57:11,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 148 transitions, 350 flow [2022-11-20 11:57:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:57:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:57:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 694 transitions. [2022-11-20 11:57:11,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8784810126582279 [2022-11-20 11:57:11,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 694 transitions. [2022-11-20 11:57:11,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 694 transitions. [2022-11-20 11:57:11,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:11,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 694 transitions. [2022-11-20 11:57:11,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states 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 11:57:11,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 11:57:11,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 11:57:11,155 INFO L175 Difference]: Start difference. First operand has 147 places, 158 transitions, 328 flow. Second operand 5 states and 694 transitions. [2022-11-20 11:57:11,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 148 transitions, 350 flow [2022-11-20 11:57:11,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 148 transitions, 348 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-20 11:57:11,159 INFO L231 Difference]: Finished difference. Result has 153 places, 144 transitions, 324 flow [2022-11-20 11:57:11,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=153, PETRI_TRANSITIONS=144} [2022-11-20 11:57:11,160 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 6 predicate places. [2022-11-20 11:57:11,160 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 144 transitions, 324 flow [2022-11-20 11:57:11,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 11:57:11,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:11,161 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] [2022-11-20 11:57:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:57:11,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 11:57:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2061396471, now seen corresponding path program 1 times [2022-11-20 11:57:11,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:11,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184553411] [2022-11-20 11:57:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:11,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:11,572 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 11:57:11,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:11,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184553411] [2022-11-20 11:57:11,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184553411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:11,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:11,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:57:11,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013359718] [2022-11-20 11:57:11,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:11,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:57:11,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:11,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:57:11,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:57:11,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2022-11-20 11:57:11,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 144 transitions, 324 flow. Second operand has 12 states, 12 states have (on average 87.5) internal successors, (1050), 12 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 11:57:11,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:11,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2022-11-20 11:57:11,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:13,605 INFO L130 PetriNetUnfolder]: 2879/7850 cut-off events. [2022-11-20 11:57:13,605 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-20 11:57:13,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12660 conditions, 7850 events. 2879/7850 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 78135 event pairs, 655 based on Foata normal form. 0/7314 useless extension candidates. Maximal degree in co-relation 12572. Up to 2487 conditions per place. [2022-11-20 11:57:13,683 INFO L137 encePairwiseOnDemand]: 142/158 looper letters, 183 selfloop transitions, 31 changer transitions 0/302 dead transitions. [2022-11-20 11:57:13,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 302 transitions, 1093 flow [2022-11-20 11:57:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:57:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:57:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1752 transitions. [2022-11-20 11:57:13,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6160337552742616 [2022-11-20 11:57:13,689 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1752 transitions. [2022-11-20 11:57:13,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1752 transitions. [2022-11-20 11:57:13,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:13,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1752 transitions. [2022-11-20 11:57:13,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 97.33333333333333) internal successors, (1752), 18 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states 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 11:57:13,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 158.0) internal successors, (3002), 19 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states 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 11:57:13,703 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 158.0) internal successors, (3002), 19 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states 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 11:57:13,703 INFO L175 Difference]: Start difference. First operand has 153 places, 144 transitions, 324 flow. Second operand 18 states and 1752 transitions. [2022-11-20 11:57:13,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 302 transitions, 1093 flow [2022-11-20 11:57:13,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 302 transitions, 1091 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:57:13,711 INFO L231 Difference]: Finished difference. Result has 179 places, 172 transitions, 541 flow [2022-11-20 11:57:13,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=541, PETRI_PLACES=179, PETRI_TRANSITIONS=172} [2022-11-20 11:57:13,713 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 32 predicate places. [2022-11-20 11:57:13,713 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 172 transitions, 541 flow [2022-11-20 11:57:13,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.5) internal successors, (1050), 12 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 11:57:13,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:13,714 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:13,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:57:13,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 11:57:13,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1353994826, now seen corresponding path program 1 times [2022-11-20 11:57:13,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:13,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567064087] [2022-11-20 11:57:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:13,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:57:13,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:13,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567064087] [2022-11-20 11:57:13,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567064087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:13,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:13,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:13,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899394559] [2022-11-20 11:57:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:13,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:57:13,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:57:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:57:13,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-20 11:57:13,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 172 transitions, 541 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:13,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:13,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-20 11:57:13,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:13,954 INFO L130 PetriNetUnfolder]: 39/655 cut-off events. [2022-11-20 11:57:13,954 INFO L131 PetriNetUnfolder]: For 246/271 co-relation queries the response was YES. [2022-11-20 11:57:13,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 655 events. 39/655 cut-off events. For 246/271 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3728 event pairs, 12 based on Foata normal form. 3/610 useless extension candidates. Maximal degree in co-relation 885. Up to 57 conditions per place. [2022-11-20 11:57:13,961 INFO L137 encePairwiseOnDemand]: 152/158 looper letters, 9 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2022-11-20 11:57:13,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 172 transitions, 573 flow [2022-11-20 11:57:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:57:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:57:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 650 transitions. [2022-11-20 11:57:13,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8227848101265823 [2022-11-20 11:57:13,964 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 650 transitions. [2022-11-20 11:57:13,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 650 transitions. [2022-11-20 11:57:13,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:13,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 650 transitions. [2022-11-20 11:57:13,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states 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 11:57:13,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 11:57:13,968 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states 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 11:57:13,969 INFO L175 Difference]: Start difference. First operand has 179 places, 172 transitions, 541 flow. Second operand 5 states and 650 transitions. [2022-11-20 11:57:13,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 172 transitions, 573 flow [2022-11-20 11:57:13,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 172 transitions, 568 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:57:13,977 INFO L231 Difference]: Finished difference. Result has 180 places, 172 transitions, 556 flow [2022-11-20 11:57:13,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=180, PETRI_TRANSITIONS=172} [2022-11-20 11:57:13,978 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 33 predicate places. [2022-11-20 11:57:13,978 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 172 transitions, 556 flow [2022-11-20 11:57:13,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:57:13,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:13,979 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:13,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:57:13,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 11:57:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash 975833767, now seen corresponding path program 1 times [2022-11-20 11:57:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:13,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886151313] [2022-11-20 11:57:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:13,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:14,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:14,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886151313] [2022-11-20 11:57:14,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886151313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:14,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433906256] [2022-11-20 11:57:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:14,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:14,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:14,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:57:14,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:57:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:14,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:57:14,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:57:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:14,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:57:14,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433906256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:14,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:57:14,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:57:14,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494545886] [2022-11-20 11:57:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:14,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:57:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:57:14,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:57:14,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 158 [2022-11-20 11:57:14,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 172 transitions, 556 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 11:57:14,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:14,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 158 [2022-11-20 11:57:14,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:14,585 INFO L130 PetriNetUnfolder]: 39/654 cut-off events. [2022-11-20 11:57:14,585 INFO L131 PetriNetUnfolder]: For 257/282 co-relation queries the response was YES. [2022-11-20 11:57:14,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 654 events. 39/654 cut-off events. For 257/282 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3716 event pairs, 12 based on Foata normal form. 3/609 useless extension candidates. Maximal degree in co-relation 893. Up to 57 conditions per place. [2022-11-20 11:57:14,592 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 13 selfloop transitions, 6 changer transitions 0/174 dead transitions. [2022-11-20 11:57:14,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 174 transitions, 596 flow [2022-11-20 11:57:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:57:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:57:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 909 transitions. [2022-11-20 11:57:14,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8218806509945751 [2022-11-20 11:57:14,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 909 transitions. [2022-11-20 11:57:14,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 909 transitions. [2022-11-20 11:57:14,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:14,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 909 transitions. [2022-11-20 11:57:14,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 11:57:14,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 11:57:14,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 11:57:14,604 INFO L175 Difference]: Start difference. First operand has 180 places, 172 transitions, 556 flow. Second operand 7 states and 909 transitions. [2022-11-20 11:57:14,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 174 transitions, 596 flow [2022-11-20 11:57:14,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 174 transitions, 584 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:57:14,612 INFO L231 Difference]: Finished difference. Result has 182 places, 171 transitions, 552 flow [2022-11-20 11:57:14,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=552, PETRI_PLACES=182, PETRI_TRANSITIONS=171} [2022-11-20 11:57:14,614 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 35 predicate places. [2022-11-20 11:57:14,615 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 171 transitions, 552 flow [2022-11-20 11:57:14,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 11:57:14,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:14,616 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] [2022-11-20 11:57:14,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:57:14,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:14,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 11:57:14,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:14,828 INFO L85 PathProgramCache]: Analyzing trace with hash 496488403, now seen corresponding path program 1 times [2022-11-20 11:57:14,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:14,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356370400] [2022-11-20 11:57:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:14,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:15,020 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 11:57:15,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356370400] [2022-11-20 11:57:15,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356370400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:15,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:15,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:57:15,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440719069] [2022-11-20 11:57:15,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:15,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:57:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:15,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:57:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:57:15,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 158 [2022-11-20 11:57:15,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 171 transitions, 552 flow. Second operand has 6 states, 6 states have (on average 105.16666666666667) internal successors, (631), 6 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 11:57:15,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:15,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 158 [2022-11-20 11:57:15,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:16,244 INFO L130 PetriNetUnfolder]: 1490/5505 cut-off events. [2022-11-20 11:57:16,244 INFO L131 PetriNetUnfolder]: For 5117/5426 co-relation queries the response was YES. [2022-11-20 11:57:16,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10555 conditions, 5505 events. 1490/5505 cut-off events. For 5117/5426 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 56807 event pairs, 485 based on Foata normal form. 56/4988 useless extension candidates. Maximal degree in co-relation 9915. Up to 1036 conditions per place. [2022-11-20 11:57:16,289 INFO L137 encePairwiseOnDemand]: 145/158 looper letters, 115 selfloop transitions, 34 changer transitions 0/263 dead transitions. [2022-11-20 11:57:16,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 263 transitions, 1205 flow [2022-11-20 11:57:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:57:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:57:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1241 transitions. [2022-11-20 11:57:16,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7140391254315305 [2022-11-20 11:57:16,294 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1241 transitions. [2022-11-20 11:57:16,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1241 transitions. [2022-11-20 11:57:16,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:16,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1241 transitions. [2022-11-20 11:57:16,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 112.81818181818181) internal successors, (1241), 11 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 11:57:16,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 11:57:16,303 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 11:57:16,303 INFO L175 Difference]: Start difference. First operand has 182 places, 171 transitions, 552 flow. Second operand 11 states and 1241 transitions. [2022-11-20 11:57:16,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 263 transitions, 1205 flow [2022-11-20 11:57:16,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 263 transitions, 1194 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:57:16,331 INFO L231 Difference]: Finished difference. Result has 194 places, 198 transitions, 827 flow [2022-11-20 11:57:16,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=827, PETRI_PLACES=194, PETRI_TRANSITIONS=198} [2022-11-20 11:57:16,332 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 47 predicate places. [2022-11-20 11:57:16,332 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 198 transitions, 827 flow [2022-11-20 11:57:16,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.16666666666667) internal successors, (631), 6 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 11:57:16,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:16,333 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:57:16,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 11:57:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1628792590, now seen corresponding path program 1 times [2022-11-20 11:57:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:16,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222727378] [2022-11-20 11:57:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:16,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:57:16,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:16,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222727378] [2022-11-20 11:57:16,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222727378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:16,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659678247] [2022-11-20 11:57:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:16,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:16,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:16,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:57:16,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:57:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:16,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:57:16,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:57:17,263 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:57:17,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:57:17,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:57:17,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:57:17,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:57:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:57:17,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:57:17,677 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_84 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_84) c_~p~0.base) c_~p~0.offset) 2147483647)) is different from false [2022-11-20 11:57:18,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-20 11:57:18,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:57:18,127 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 11:57:18,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 11:57:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 11:57:18,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659678247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:57:18,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:57:18,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2022-11-20 11:57:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688597858] [2022-11-20 11:57:18,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:57:18,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:57:18,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:57:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=604, Unknown=2, NotChecked=50, Total=756 [2022-11-20 11:57:18,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2022-11-20 11:57:18,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 198 transitions, 827 flow. Second operand has 28 states, 28 states have (on average 87.82142857142857) internal successors, (2459), 28 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states 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 11:57:18,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:18,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2022-11-20 11:57:18,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:23,740 INFO L130 PetriNetUnfolder]: 6691/18552 cut-off events. [2022-11-20 11:57:23,740 INFO L131 PetriNetUnfolder]: For 32035/32684 co-relation queries the response was YES. [2022-11-20 11:57:23,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44776 conditions, 18552 events. 6691/18552 cut-off events. For 32035/32684 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 215290 event pairs, 1045 based on Foata normal form. 243/17748 useless extension candidates. Maximal degree in co-relation 43324. Up to 4122 conditions per place. [2022-11-20 11:57:23,926 INFO L137 encePairwiseOnDemand]: 138/158 looper letters, 332 selfloop transitions, 112 changer transitions 0/550 dead transitions. [2022-11-20 11:57:23,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 550 transitions, 3460 flow [2022-11-20 11:57:23,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:57:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 11:57:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2712 transitions. [2022-11-20 11:57:23,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6130198915009042 [2022-11-20 11:57:23,933 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2712 transitions. [2022-11-20 11:57:23,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2712 transitions. [2022-11-20 11:57:23,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:23,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2712 transitions. [2022-11-20 11:57:23,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 96.85714285714286) internal successors, (2712), 28 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states 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 11:57:23,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 158.0) internal successors, (4582), 29 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states 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 11:57:23,951 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 158.0) internal successors, (4582), 29 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states 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 11:57:23,951 INFO L175 Difference]: Start difference. First operand has 194 places, 198 transitions, 827 flow. Second operand 28 states and 2712 transitions. [2022-11-20 11:57:23,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 550 transitions, 3460 flow [2022-11-20 11:57:24,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 550 transitions, 3340 flow, removed 60 selfloop flow, removed 0 redundant places. [2022-11-20 11:57:24,360 INFO L231 Difference]: Finished difference. Result has 235 places, 292 transitions, 1860 flow [2022-11-20 11:57:24,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1860, PETRI_PLACES=235, PETRI_TRANSITIONS=292} [2022-11-20 11:57:24,364 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 88 predicate places. [2022-11-20 11:57:24,364 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 292 transitions, 1860 flow [2022-11-20 11:57:24,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 87.82142857142857) internal successors, (2459), 28 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states 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 11:57:24,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:24,365 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] [2022-11-20 11:57:24,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:57:24,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:24,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 11:57:24,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1788728198, now seen corresponding path program 1 times [2022-11-20 11:57:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:24,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067019646] [2022-11-20 11:57:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:25,078 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 11:57:25,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:25,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067019646] [2022-11-20 11:57:25,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067019646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:25,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:25,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 11:57:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686018993] [2022-11-20 11:57:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:25,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:57:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:57:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:57:25,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 158 [2022-11-20 11:57:25,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 292 transitions, 1860 flow. Second operand has 15 states, 15 states have (on average 80.66666666666667) internal successors, (1210), 15 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 11:57:25,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:25,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 158 [2022-11-20 11:57:25,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:31,873 INFO L130 PetriNetUnfolder]: 11008/27517 cut-off events. [2022-11-20 11:57:31,873 INFO L131 PetriNetUnfolder]: For 86088/86940 co-relation queries the response was YES. [2022-11-20 11:57:32,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79854 conditions, 27517 events. 11008/27517 cut-off events. For 86088/86940 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 318889 event pairs, 1907 based on Foata normal form. 508/27072 useless extension candidates. Maximal degree in co-relation 79370. Up to 7423 conditions per place. [2022-11-20 11:57:32,122 INFO L137 encePairwiseOnDemand]: 135/158 looper letters, 468 selfloop transitions, 179 changer transitions 23/768 dead transitions. [2022-11-20 11:57:32,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 768 transitions, 6483 flow [2022-11-20 11:57:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 11:57:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-20 11:57:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3114 transitions. [2022-11-20 11:57:32,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5796723752792257 [2022-11-20 11:57:32,133 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3114 transitions. [2022-11-20 11:57:32,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3114 transitions. [2022-11-20 11:57:32,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:32,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3114 transitions. [2022-11-20 11:57:32,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 91.58823529411765) internal successors, (3114), 34 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states 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 11:57:32,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 158.0) internal successors, (5530), 35 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states 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 11:57:32,157 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 158.0) internal successors, (5530), 35 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states 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 11:57:32,157 INFO L175 Difference]: Start difference. First operand has 235 places, 292 transitions, 1860 flow. Second operand 34 states and 3114 transitions. [2022-11-20 11:57:32,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 768 transitions, 6483 flow [2022-11-20 11:57:33,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 768 transitions, 6256 flow, removed 111 selfloop flow, removed 3 redundant places. [2022-11-20 11:57:33,200 INFO L231 Difference]: Finished difference. Result has 279 places, 395 transitions, 3324 flow [2022-11-20 11:57:33,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3324, PETRI_PLACES=279, PETRI_TRANSITIONS=395} [2022-11-20 11:57:33,201 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 132 predicate places. [2022-11-20 11:57:33,202 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 395 transitions, 3324 flow [2022-11-20 11:57:33,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.66666666666667) internal successors, (1210), 15 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states 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 11:57:33,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:33,203 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:33,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:57:33,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-20 11:57:33,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:33,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1259641391, now seen corresponding path program 1 times [2022-11-20 11:57:33,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:33,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848735937] [2022-11-20 11:57:33,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:33,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:57:33,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:57:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:57:33,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:57:33,260 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:57:33,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-20 11:57:33,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2022-11-20 11:57:33,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2022-11-20 11:57:33,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2022-11-20 11:57:33,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2022-11-20 11:57:33,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2022-11-20 11:57:33,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2022-11-20 11:57:33,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2022-11-20 11:57:33,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2022-11-20 11:57:33,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2022-11-20 11:57:33,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2022-11-20 11:57:33,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2022-11-20 11:57:33,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2022-11-20 11:57:33,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2022-11-20 11:57:33,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2022-11-20 11:57:33,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:57:33,265 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:33,266 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:57:33,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:57:33,303 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 11:57:33,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 199 transitions, 419 flow [2022-11-20 11:57:33,367 INFO L130 PetriNetUnfolder]: 34/316 cut-off events. [2022-11-20 11:57:33,367 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 11:57:33,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 316 events. 34/316 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1028 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2022-11-20 11:57:33,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 199 transitions, 419 flow [2022-11-20 11:57:33,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 199 transitions, 419 flow [2022-11-20 11:57:33,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:57:33,378 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;@1ed7b6b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:57:33,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-20 11:57:33,385 INFO L130 PetriNetUnfolder]: 1/57 cut-off events. [2022-11-20 11:57:33,386 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:57:33,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:33,386 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] [2022-11-20 11:57:33,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:57:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash -193036385, now seen corresponding path program 1 times [2022-11-20 11:57:33,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:33,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605749439] [2022-11-20 11:57:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:33,441 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 11:57:33,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:33,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605749439] [2022-11-20 11:57:33,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605749439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:33,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:33,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:33,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61520774] [2022-11-20 11:57:33,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:33,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:57:33,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:57:33,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:57:33,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 199 [2022-11-20 11:57:33,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 199 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 11:57:33,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:33,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 199 [2022-11-20 11:57:33,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:33,535 INFO L130 PetriNetUnfolder]: 0/252 cut-off events. [2022-11-20 11:57:33,535 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 11:57:33,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 252 events. 0/252 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 698 event pairs, 0 based on Foata normal form. 232/462 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2022-11-20 11:57:33,537 INFO L137 encePairwiseOnDemand]: 170/199 looper letters, 18 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2022-11-20 11:57:33,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 183 transitions, 431 flow [2022-11-20 11:57:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:57:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:57:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 871 transitions. [2022-11-20 11:57:33,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753768844221106 [2022-11-20 11:57:33,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 871 transitions. [2022-11-20 11:57:33,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 871 transitions. [2022-11-20 11:57:33,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:33,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 871 transitions. [2022-11-20 11:57:33,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.2) internal successors, (871), 5 states have internal predecessors, (871), 0 states have call successors, (0), 0 states 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 11:57:33,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 11:57:33,560 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 11:57:33,563 INFO L175 Difference]: Start difference. First operand has 184 places, 199 transitions, 419 flow. Second operand 5 states and 871 transitions. [2022-11-20 11:57:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 183 transitions, 431 flow [2022-11-20 11:57:33,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 183 transitions, 425 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-20 11:57:33,568 INFO L231 Difference]: Finished difference. Result has 190 places, 179 transitions, 399 flow [2022-11-20 11:57:33,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=190, PETRI_TRANSITIONS=179} [2022-11-20 11:57:33,570 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 6 predicate places. [2022-11-20 11:57:33,570 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 179 transitions, 399 flow [2022-11-20 11:57:33,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 11:57:33,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:33,572 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] [2022-11-20 11:57:33,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:57:33,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:57:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash -148948008, now seen corresponding path program 1 times [2022-11-20 11:57:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939515521] [2022-11-20 11:57:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:33,944 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 11:57:33,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:33,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939515521] [2022-11-20 11:57:33,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939515521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:33,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:33,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:57:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490800315] [2022-11-20 11:57:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:33,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:57:33,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:57:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:57:33,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 199 [2022-11-20 11:57:33,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 179 transitions, 399 flow. Second operand has 12 states, 12 states have (on average 113.5) internal successors, (1362), 12 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states 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 11:57:33,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:33,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 199 [2022-11-20 11:57:33,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:47,543 INFO L130 PetriNetUnfolder]: 45893/100615 cut-off events. [2022-11-20 11:57:47,543 INFO L131 PetriNetUnfolder]: For 561/561 co-relation queries the response was YES. [2022-11-20 11:57:47,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165994 conditions, 100615 events. 45893/100615 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 3234. Compared 1259458 event pairs, 13356 based on Foata normal form. 0/94636 useless extension candidates. Maximal degree in co-relation 165905. Up to 36573 conditions per place. [2022-11-20 11:57:48,296 INFO L137 encePairwiseOnDemand]: 182/199 looper letters, 272 selfloop transitions, 37 changer transitions 0/423 dead transitions. [2022-11-20 11:57:48,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 423 transitions, 1560 flow [2022-11-20 11:57:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:57:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:57:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2315 transitions. [2022-11-20 11:57:48,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.646286990508096 [2022-11-20 11:57:48,305 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2315 transitions. [2022-11-20 11:57:48,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2315 transitions. [2022-11-20 11:57:48,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:48,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2315 transitions. [2022-11-20 11:57:48,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 128.61111111111111) internal successors, (2315), 18 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states 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 11:57:48,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states 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 11:57:48,321 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 199.0) internal successors, (3781), 19 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states 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 11:57:48,321 INFO L175 Difference]: Start difference. First operand has 190 places, 179 transitions, 399 flow. Second operand 18 states and 2315 transitions. [2022-11-20 11:57:48,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 423 transitions, 1560 flow [2022-11-20 11:57:48,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 423 transitions, 1558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:57:48,330 INFO L231 Difference]: Finished difference. Result has 216 places, 213 transitions, 660 flow [2022-11-20 11:57:48,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=660, PETRI_PLACES=216, PETRI_TRANSITIONS=213} [2022-11-20 11:57:48,331 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 32 predicate places. [2022-11-20 11:57:48,331 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 213 transitions, 660 flow [2022-11-20 11:57:48,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 113.5) internal successors, (1362), 12 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states 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 11:57:48,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:48,332 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:48,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:57:48,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:57:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:48,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1437098406, now seen corresponding path program 1 times [2022-11-20 11:57:48,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:48,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710437171] [2022-11-20 11:57:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:48,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:57:48,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:48,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710437171] [2022-11-20 11:57:48,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710437171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:48,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:48,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:57:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833223369] [2022-11-20 11:57:48,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:48,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:57:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:57:48,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:57:48,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 199 [2022-11-20 11:57:48,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 213 transitions, 660 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states 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 11:57:48,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:48,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 199 [2022-11-20 11:57:48,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:48,993 INFO L130 PetriNetUnfolder]: 172/1980 cut-off events. [2022-11-20 11:57:48,993 INFO L131 PetriNetUnfolder]: For 1318/1494 co-relation queries the response was YES. [2022-11-20 11:57:49,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 1980 events. 172/1980 cut-off events. For 1318/1494 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17126 event pairs, 67 based on Foata normal form. 2/1803 useless extension candidates. Maximal degree in co-relation 3085. Up to 248 conditions per place. [2022-11-20 11:57:49,024 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 10 selfloop transitions, 8 changer transitions 0/213 dead transitions. [2022-11-20 11:57:49,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 213 transitions, 694 flow [2022-11-20 11:57:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:57:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:57:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 821 transitions. [2022-11-20 11:57:49,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8251256281407036 [2022-11-20 11:57:49,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 821 transitions. [2022-11-20 11:57:49,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 821 transitions. [2022-11-20 11:57:49,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:49,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 821 transitions. [2022-11-20 11:57:49,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 11:57:49,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 11:57:49,038 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 11:57:49,038 INFO L175 Difference]: Start difference. First operand has 216 places, 213 transitions, 660 flow. Second operand 5 states and 821 transitions. [2022-11-20 11:57:49,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 213 transitions, 694 flow [2022-11-20 11:57:49,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 213 transitions, 689 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:57:49,046 INFO L231 Difference]: Finished difference. Result has 217 places, 213 transitions, 675 flow [2022-11-20 11:57:49,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=675, PETRI_PLACES=217, PETRI_TRANSITIONS=213} [2022-11-20 11:57:49,047 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 33 predicate places. [2022-11-20 11:57:49,047 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 213 transitions, 675 flow [2022-11-20 11:57:49,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states 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 11:57:49,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:49,048 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:49,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:57:49,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:57:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:49,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1600378238, now seen corresponding path program 1 times [2022-11-20 11:57:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:49,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274658517] [2022-11-20 11:57:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:49,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:49,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274658517] [2022-11-20 11:57:49,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274658517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:49,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277269335] [2022-11-20 11:57:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:49,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:49,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:49,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:57:49,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:57:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:49,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:57:49,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:57:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:57:49,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:57:49,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277269335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:49,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:57:49,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:57:49,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079243997] [2022-11-20 11:57:49,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:49,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:57:49,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:49,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:57:49,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:57:49,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 199 [2022-11-20 11:57:49,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 213 transitions, 675 flow. Second operand has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 11:57:49,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:49,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 199 [2022-11-20 11:57:49,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:49,703 INFO L130 PetriNetUnfolder]: 172/1978 cut-off events. [2022-11-20 11:57:49,703 INFO L131 PetriNetUnfolder]: For 1333/1509 co-relation queries the response was YES. [2022-11-20 11:57:49,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 1978 events. 172/1978 cut-off events. For 1333/1509 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17157 event pairs, 67 based on Foata normal form. 2/1801 useless extension candidates. Maximal degree in co-relation 3089. Up to 248 conditions per place. [2022-11-20 11:57:49,733 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 14 selfloop transitions, 6 changer transitions 0/215 dead transitions. [2022-11-20 11:57:49,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 215 transitions, 717 flow [2022-11-20 11:57:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:57:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:57:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1148 transitions. [2022-11-20 11:57:49,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8241206030150754 [2022-11-20 11:57:49,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1148 transitions. [2022-11-20 11:57:49,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1148 transitions. [2022-11-20 11:57:49,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:49,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1148 transitions. [2022-11-20 11:57:49,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states 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 11:57:49,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 11:57:49,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 11:57:49,744 INFO L175 Difference]: Start difference. First operand has 217 places, 213 transitions, 675 flow. Second operand 7 states and 1148 transitions. [2022-11-20 11:57:49,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 215 transitions, 717 flow [2022-11-20 11:57:49,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 215 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:57:49,753 INFO L231 Difference]: Finished difference. Result has 219 places, 212 transitions, 671 flow [2022-11-20 11:57:49,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=671, PETRI_PLACES=219, PETRI_TRANSITIONS=212} [2022-11-20 11:57:49,755 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 35 predicate places. [2022-11-20 11:57:49,755 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 212 transitions, 671 flow [2022-11-20 11:57:49,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states 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 11:57:49,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:49,756 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] [2022-11-20 11:57:49,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:57:49,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:49,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:57:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash 350032219, now seen corresponding path program 1 times [2022-11-20 11:57:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:49,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937531111] [2022-11-20 11:57:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:49,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:50,073 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 11:57:50,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:50,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937531111] [2022-11-20 11:57:50,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937531111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:57:50,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:57:50,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:57:50,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378217562] [2022-11-20 11:57:50,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:57:50,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:57:50,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:57:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:57:50,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 199 [2022-11-20 11:57:50,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 212 transitions, 671 flow. Second operand has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 11:57:50,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:50,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 199 [2022-11-20 11:57:50,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:57,235 INFO L130 PetriNetUnfolder]: 15058/44820 cut-off events. [2022-11-20 11:57:57,235 INFO L131 PetriNetUnfolder]: For 64587/67581 co-relation queries the response was YES. [2022-11-20 11:57:57,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93064 conditions, 44820 events. 15058/44820 cut-off events. For 64587/67581 co-relation queries the response was YES. Maximal size of possible extension queue 1516. Compared 589020 event pairs, 5137 based on Foata normal form. 310/40366 useless extension candidates. Maximal degree in co-relation 87700. Up to 9023 conditions per place. [2022-11-20 11:57:57,681 INFO L137 encePairwiseOnDemand]: 184/199 looper letters, 163 selfloop transitions, 44 changer transitions 0/351 dead transitions. [2022-11-20 11:57:57,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 351 transitions, 1695 flow [2022-11-20 11:57:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:57:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:57:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1621 transitions. [2022-11-20 11:57:57,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7405207857469164 [2022-11-20 11:57:57,688 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1621 transitions. [2022-11-20 11:57:57,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1621 transitions. [2022-11-20 11:57:57,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:57:57,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1621 transitions. [2022-11-20 11:57:57,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 147.36363636363637) internal successors, (1621), 11 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states 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 11:57:57,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 199.0) internal successors, (2388), 12 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states 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 11:57:57,697 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 199.0) internal successors, (2388), 12 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states 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 11:57:57,698 INFO L175 Difference]: Start difference. First operand has 219 places, 212 transitions, 671 flow. Second operand 11 states and 1621 transitions. [2022-11-20 11:57:57,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 351 transitions, 1695 flow [2022-11-20 11:57:57,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 351 transitions, 1684 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:57:57,830 INFO L231 Difference]: Finished difference. Result has 231 places, 249 transitions, 1080 flow [2022-11-20 11:57:57,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1080, PETRI_PLACES=231, PETRI_TRANSITIONS=249} [2022-11-20 11:57:57,831 INFO L288 CegarLoopForPetriNet]: 184 programPoint places, 47 predicate places. [2022-11-20 11:57:57,832 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 249 transitions, 1080 flow [2022-11-20 11:57:57,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 11:57:57,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:57:57,833 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:57,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:57:57,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-20 11:57:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1174360607, now seen corresponding path program 1 times [2022-11-20 11:57:57,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:57,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054957305] [2022-11-20 11:57:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:57,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:57:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:58,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054957305] [2022-11-20 11:57:58,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054957305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:58,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47716160] [2022-11-20 11:57:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:58,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:58,214 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:57:58,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb9d7bc7-42bc-4bdc-b719-f7fe982ee874/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:57:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:58,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:57:58,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:57:58,536 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:57:58,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:57:58,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:57:58,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 11:57:58,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 11:57:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:57:58,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:57:59,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-20 11:57:59,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 11:57:59,176 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 11:57:59,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 11:57:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:57:59,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47716160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:57:59,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:57:59,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2022-11-20 11:57:59,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053261331] [2022-11-20 11:57:59,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:57:59,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:57:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:57:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=650, Unknown=4, NotChecked=0, Total=756 [2022-11-20 11:57:59,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 199 [2022-11-20 11:57:59,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 249 transitions, 1080 flow. Second operand has 28 states, 28 states have (on average 113.82142857142857) internal successors, (3187), 28 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states 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 11:57:59,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:57:59,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 199 [2022-11-20 11:57:59,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand