./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a --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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- 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-b5237d8 [2022-11-21 17:20:53,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:20:53,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:20:53,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:20:53,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:20:53,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:20:53,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:20:53,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:20:53,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:20:53,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:20:53,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:20:53,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:20:53,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:20:53,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:20:53,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:20:53,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:20:53,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:20:53,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:20:53,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:20:53,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:20:53,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:20:53,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:20:53,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:20:53,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:20:53,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:20:53,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:20:53,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:20:53,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:20:53,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:20:53,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:20:53,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:20:53,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:20:53,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:20:53,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:20:53,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:20:53,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:20:53,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:20:53,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:20:53,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:20:53,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:20:53,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:20:53,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:20:53,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:20:53,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:20:53,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:20:53,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:20:53,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:20:53,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:20:53,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:20:53,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:20:53,832 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:20:53,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:20:53,832 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:20:53,833 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:20:53,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:20:53,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:20:53,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:20:53,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:20:53,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:20:53,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:20:53,835 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:20:53,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:20:53,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:20:53,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:20:53,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:20:53,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:20:53,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:20:53,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:20:53,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:20:53,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:20:53,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:20:53,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:20:53,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:20:53,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:20:53,839 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:20:53,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:20:53,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:20:53,840 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_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2022-11-21 17:20:54,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:20:54,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:20:54,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:20:54,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:20:54,254 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:20:54,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-11-21 17:20:58,056 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:20:58,433 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:20:58,434 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-11-21 17:20:58,451 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/data/a0a3a6dcf/0c36f392895d4760a3d449638cacae9e/FLAG87d5c0a70 [2022-11-21 17:20:58,469 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/data/a0a3a6dcf/0c36f392895d4760a3d449638cacae9e [2022-11-21 17:20:58,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:20:58,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:20:58,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:20:58,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:20:58,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:20:58,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:58" (1/1) ... [2022-11-21 17:20:58,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492a1be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:58, skipping insertion in model container [2022-11-21 17:20:58,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:58" (1/1) ... [2022-11-21 17:20:58,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:20:58,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:20:58,999 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_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-11-21 17:20:59,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:20:59,051 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:20:59,102 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_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-11-21 17:20:59,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:20:59,182 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:20:59,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59 WrapperNode [2022-11-21 17:20:59,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:20:59,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:20:59,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:20:59,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:20:59,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,255 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-11-21 17:20:59,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:20:59,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:20:59,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:20:59,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:20:59,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:20:59,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:20:59,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:20:59,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:20:59,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (1/1) ... [2022-11-21 17:20:59,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:20:59,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:59,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:20:59,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:20:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:20:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:20:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 17:20:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:20:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:20:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 17:20:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 17:20:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:20:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:20:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:20:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:20:59,437 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:20:59,642 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:20:59,657 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:21:00,110 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:21:00,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:21:00,128 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-21 17:21:00,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:21:00 BoogieIcfgContainer [2022-11-21 17:21:00,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:21:00,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:21:00,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:21:00,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:21:00,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:20:58" (1/3) ... [2022-11-21 17:21:00,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264369a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:21:00, skipping insertion in model container [2022-11-21 17:21:00,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:59" (2/3) ... [2022-11-21 17:21:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264369a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:21:00, skipping insertion in model container [2022-11-21 17:21:00,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:21:00" (3/3) ... [2022-11-21 17:21:00,148 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2022-11-21 17:21:00,163 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:21:00,176 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:21:00,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 17:21:00,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:21:00,320 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 17:21:00,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 134 transitions, 276 flow [2022-11-21 17:21:00,553 INFO L130 PetriNetUnfolder]: 18/169 cut-off events. [2022-11-21 17:21:00,555 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 17:21:00,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 169 events. 18/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 373 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-21 17:21:00,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 134 transitions, 276 flow [2022-11-21 17:21:00,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 131 transitions, 270 flow [2022-11-21 17:21:00,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:21:00,624 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;@67e09a09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:21:00,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-21 17:21:00,649 INFO L130 PetriNetUnfolder]: 3/72 cut-off events. [2022-11-21 17:21:00,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:21:00,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:00,650 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] [2022-11-21 17:21:00,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:21:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash 759543818, now seen corresponding path program 1 times [2022-11-21 17:21:00,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:00,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534830748] [2022-11-21 17:21:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:00,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:01,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534830748] [2022-11-21 17:21:01,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534830748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:01,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:01,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112865916] [2022-11-21 17:21:01,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:01,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:01,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:01,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:01,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-21 17:21:01,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 131 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:01,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-21 17:21:01,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:01,390 INFO L130 PetriNetUnfolder]: 1/121 cut-off events. [2022-11-21 17:21:01,390 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-21 17:21:01,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 121 events. 1/121 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 41/153 useless extension candidates. Maximal degree in co-relation 51. Up to 7 conditions per place. [2022-11-21 17:21:01,392 INFO L137 encePairwiseOnDemand]: 116/134 looper letters, 10 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2022-11-21 17:21:01,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 274 flow [2022-11-21 17:21:01,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 587 transitions. [2022-11-21 17:21:01,428 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761194029850746 [2022-11-21 17:21:01,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 587 transitions. [2022-11-21 17:21:01,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 587 transitions. [2022-11-21 17:21:01,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:01,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 587 transitions. [2022-11-21 17:21:01,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,459 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,461 INFO L175 Difference]: Start difference. First operand has 122 places, 131 transitions, 270 flow. Second operand 5 states and 587 transitions. [2022-11-21 17:21:01,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 274 flow [2022-11-21 17:21:01,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 119 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:21:01,479 INFO L231 Difference]: Finished difference. Result has 124 places, 117 transitions, 254 flow [2022-11-21 17:21:01,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=124, PETRI_TRANSITIONS=117} [2022-11-21 17:21:01,489 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 2 predicate places. [2022-11-21 17:21:01,490 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 117 transitions, 254 flow [2022-11-21 17:21:01,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:01,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:01,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:21:01,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:21:01,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1716994358, now seen corresponding path program 1 times [2022-11-21 17:21:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:01,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476916874] [2022-11-21 17:21:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:01,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:01,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476916874] [2022-11-21 17:21:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476916874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:01,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:01,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:01,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539545512] [2022-11-21 17:21:01,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:01,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:01,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 134 [2022-11-21 17:21:01,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 117 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:01,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 134 [2022-11-21 17:21:01,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:01,930 INFO L130 PetriNetUnfolder]: 8/166 cut-off events. [2022-11-21 17:21:01,930 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-21 17:21:01,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 166 events. 8/166 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 389 event pairs, 2 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 138. Up to 11 conditions per place. [2022-11-21 17:21:01,932 INFO L137 encePairwiseOnDemand]: 128/134 looper letters, 10 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2022-11-21 17:21:01,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 118 transitions, 284 flow [2022-11-21 17:21:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:01,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2022-11-21 17:21:01,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8373134328358209 [2022-11-21 17:21:01,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 561 transitions. [2022-11-21 17:21:01,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 561 transitions. [2022-11-21 17:21:01,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:01,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 561 transitions. [2022-11-21 17:21:01,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,942 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,942 INFO L175 Difference]: Start difference. First operand has 124 places, 117 transitions, 254 flow. Second operand 5 states and 561 transitions. [2022-11-21 17:21:01,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 118 transitions, 284 flow [2022-11-21 17:21:01,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 118 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 17:21:01,947 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 250 flow [2022-11-21 17:21:01,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2022-11-21 17:21:01,949 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2022-11-21 17:21:01,949 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 250 flow [2022-11-21 17:21:01,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:01,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:01,950 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] [2022-11-21 17:21:01,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:21:01,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-21 17:21:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:01,952 INFO L85 PathProgramCache]: Analyzing trace with hash 120615823, now seen corresponding path program 1 times [2022-11-21 17:21:01,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:01,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935950782] [2022-11-21 17:21:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:01,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:21:01,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:21:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:21:02,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:21:02,118 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:21:02,120 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-21 17:21:02,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-21 17:21:02,123 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-21 17:21:02,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-21 17:21:02,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-21 17:21:02,124 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-21 17:21:02,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-21 17:21:02,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-21 17:21:02,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-21 17:21:02,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-21 17:21:02,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-21 17:21:02,126 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-21 17:21:02,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-21 17:21:02,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:21:02,152 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 17:21:02,155 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:21:02,155 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 17:21:02,195 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 17:21:02,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 172 transitions, 362 flow [2022-11-21 17:21:02,250 INFO L130 PetriNetUnfolder]: 32/279 cut-off events. [2022-11-21 17:21:02,250 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 17:21:02,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 32/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 793 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-11-21 17:21:02,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 172 transitions, 362 flow [2022-11-21 17:21:02,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 172 transitions, 362 flow [2022-11-21 17:21:02,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:21:02,278 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;@67e09a09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:21:02,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-21 17:21:02,294 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-21 17:21:02,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:21:02,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:02,295 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] [2022-11-21 17:21:02,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:21:02,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:02,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1872846930, now seen corresponding path program 1 times [2022-11-21 17:21:02,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:02,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352600679] [2022-11-21 17:21:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:02,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:02,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:02,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:02,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352600679] [2022-11-21 17:21:02,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352600679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:02,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:02,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299532718] [2022-11-21 17:21:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:02,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 172 [2022-11-21 17:21:02,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 172 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:02,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:02,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 172 [2022-11-21 17:21:02,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:02,607 INFO L130 PetriNetUnfolder]: 3/230 cut-off events. [2022-11-21 17:21:02,607 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-21 17:21:02,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 230 events. 3/230 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 520 event pairs, 0 based on Foata normal form. 125/330 useless extension candidates. Maximal degree in co-relation 149. Up to 21 conditions per place. [2022-11-21 17:21:02,610 INFO L137 encePairwiseOnDemand]: 148/172 looper letters, 19 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2022-11-21 17:21:02,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 161 transitions, 386 flow [2022-11-21 17:21:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2022-11-21 17:21:02,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8744186046511628 [2022-11-21 17:21:02,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2022-11-21 17:21:02,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2022-11-21 17:21:02,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:02,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2022-11-21 17:21:02,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:02,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:02,621 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:02,621 INFO L175 Difference]: Start difference. First operand has 157 places, 172 transitions, 362 flow. Second operand 5 states and 752 transitions. [2022-11-21 17:21:02,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 161 transitions, 386 flow [2022-11-21 17:21:02,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 161 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:21:02,633 INFO L231 Difference]: Finished difference. Result has 163 places, 157 transitions, 358 flow [2022-11-21 17:21:02,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2022-11-21 17:21:02,637 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 6 predicate places. [2022-11-21 17:21:02,638 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 358 flow [2022-11-21 17:21:02,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:02,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:02,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:02,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:21:02,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:21:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1039958490, now seen corresponding path program 1 times [2022-11-21 17:21:02,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:02,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860502876] [2022-11-21 17:21:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:02,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:02,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:02,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860502876] [2022-11-21 17:21:02,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860502876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:02,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:02,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:02,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109428828] [2022-11-21 17:21:02,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:02,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:02,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 172 [2022-11-21 17:21:02,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:02,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:02,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 172 [2022-11-21 17:21:02,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:03,209 INFO L130 PetriNetUnfolder]: 173/1189 cut-off events. [2022-11-21 17:21:03,210 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-21 17:21:03,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1189 events. 173/1189 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8701 event pairs, 77 based on Foata normal form. 0/1047 useless extension candidates. Maximal degree in co-relation 1508. Up to 206 conditions per place. [2022-11-21 17:21:03,222 INFO L137 encePairwiseOnDemand]: 165/172 looper letters, 36 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2022-11-21 17:21:03,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 180 transitions, 506 flow [2022-11-21 17:21:03,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 721 transitions. [2022-11-21 17:21:03,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383720930232558 [2022-11-21 17:21:03,227 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 721 transitions. [2022-11-21 17:21:03,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 721 transitions. [2022-11-21 17:21:03,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:03,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 721 transitions. [2022-11-21 17:21:03,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,233 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,233 INFO L175 Difference]: Start difference. First operand has 163 places, 157 transitions, 358 flow. Second operand 5 states and 721 transitions. [2022-11-21 17:21:03,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 180 transitions, 506 flow [2022-11-21 17:21:03,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 180 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:21:03,241 INFO L231 Difference]: Finished difference. Result has 169 places, 162 transitions, 405 flow [2022-11-21 17:21:03,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=169, PETRI_TRANSITIONS=162} [2022-11-21 17:21:03,244 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 12 predicate places. [2022-11-21 17:21:03,244 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 162 transitions, 405 flow [2022-11-21 17:21:03,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:03,245 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:03,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:21:03,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:21:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1302703895, now seen corresponding path program 1 times [2022-11-21 17:21:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:03,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837945309] [2022-11-21 17:21:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:21:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:03,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837945309] [2022-11-21 17:21:03,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837945309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:03,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:03,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330306022] [2022-11-21 17:21:03,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:03,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 172 [2022-11-21 17:21:03,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 162 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:03,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 172 [2022-11-21 17:21:03,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:03,547 INFO L130 PetriNetUnfolder]: 6/356 cut-off events. [2022-11-21 17:21:03,547 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-21 17:21:03,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 356 events. 6/356 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1199 event pairs, 0 based on Foata normal form. 16/337 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2022-11-21 17:21:03,551 INFO L137 encePairwiseOnDemand]: 166/172 looper letters, 11 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2022-11-21 17:21:03,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 162 transitions, 441 flow [2022-11-21 17:21:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 707 transitions. [2022-11-21 17:21:03,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8220930232558139 [2022-11-21 17:21:03,555 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 707 transitions. [2022-11-21 17:21:03,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 707 transitions. [2022-11-21 17:21:03,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:03,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 707 transitions. [2022-11-21 17:21:03,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,564 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,564 INFO L175 Difference]: Start difference. First operand has 169 places, 162 transitions, 405 flow. Second operand 5 states and 707 transitions. [2022-11-21 17:21:03,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 162 transitions, 441 flow [2022-11-21 17:21:03,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 162 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:21:03,571 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 422 flow [2022-11-21 17:21:03,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-11-21 17:21:03,575 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 15 predicate places. [2022-11-21 17:21:03,575 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 422 flow [2022-11-21 17:21:03,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:03,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:03,576 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:03,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:21:03,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:21:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1729115560, now seen corresponding path program 1 times [2022-11-21 17:21:03,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:03,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280049393] [2022-11-21 17:21:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:03,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:03,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:03,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280049393] [2022-11-21 17:21:03,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280049393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:21:03,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475967859] [2022-11-21 17:21:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:03,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:21:03,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:21:03,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:21:03,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:21:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:03,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:21:03,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:21:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:04,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:21:04,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475967859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:04,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:21:04,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:21:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597577706] [2022-11-21 17:21:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:21:04,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 172 [2022-11-21 17:21:04,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:04,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:04,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 172 [2022-11-21 17:21:04,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:04,244 INFO L130 PetriNetUnfolder]: 6/355 cut-off events. [2022-11-21 17:21:04,244 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-21 17:21:04,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 355 events. 6/355 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1189 event pairs, 0 based on Foata normal form. 9/329 useless extension candidates. Maximal degree in co-relation 293. Up to 19 conditions per place. [2022-11-21 17:21:04,250 INFO L137 encePairwiseOnDemand]: 167/172 looper letters, 15 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2022-11-21 17:21:04,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 466 flow [2022-11-21 17:21:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:21:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:21:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2022-11-21 17:21:04,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8205980066445183 [2022-11-21 17:21:04,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 988 transitions. [2022-11-21 17:21:04,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 988 transitions. [2022-11-21 17:21:04,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:04,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 988 transitions. [2022-11-21 17:21:04,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:04,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:04,262 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:04,263 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 422 flow. Second operand 7 states and 988 transitions. [2022-11-21 17:21:04,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 466 flow [2022-11-21 17:21:04,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:21:04,271 INFO L231 Difference]: Finished difference. Result has 174 places, 161 transitions, 418 flow [2022-11-21 17:21:04,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-11-21 17:21:04,273 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 17 predicate places. [2022-11-21 17:21:04,273 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 418 flow [2022-11-21 17:21:04,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:04,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:04,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:04,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:21:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 17:21:04,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:21:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash -635786378, now seen corresponding path program 1 times [2022-11-21 17:21:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697652548] [2022-11-21 17:21:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:04,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697652548] [2022-11-21 17:21:04,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697652548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:04,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:04,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:21:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620468578] [2022-11-21 17:21:04,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:04,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:04,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:04,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:04,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:21:04,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 172 [2022-11-21 17:21:04,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 131.5) internal successors, (789), 6 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:04,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:04,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 172 [2022-11-21 17:21:04,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:05,194 INFO L130 PetriNetUnfolder]: 342/1726 cut-off events. [2022-11-21 17:21:05,195 INFO L131 PetriNetUnfolder]: For 315/319 co-relation queries the response was YES. [2022-11-21 17:21:05,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 1726 events. 342/1726 cut-off events. For 315/319 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13915 event pairs, 70 based on Foata normal form. 3/1525 useless extension candidates. Maximal degree in co-relation 1914. Up to 237 conditions per place. [2022-11-21 17:21:05,215 INFO L137 encePairwiseOnDemand]: 161/172 looper letters, 60 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2022-11-21 17:21:05,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 211 transitions, 726 flow [2022-11-21 17:21:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:21:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:21:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1251 transitions. [2022-11-21 17:21:05,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8081395348837209 [2022-11-21 17:21:05,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1251 transitions. [2022-11-21 17:21:05,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1251 transitions. [2022-11-21 17:21:05,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:05,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1251 transitions. [2022-11-21 17:21:05,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:05,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:05,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:05,229 INFO L175 Difference]: Start difference. First operand has 174 places, 161 transitions, 418 flow. Second operand 9 states and 1251 transitions. [2022-11-21 17:21:05,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 211 transitions, 726 flow [2022-11-21 17:21:05,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 211 transitions, 715 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 17:21:05,237 INFO L231 Difference]: Finished difference. Result has 183 places, 173 transitions, 533 flow [2022-11-21 17:21:05,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=533, PETRI_PLACES=183, PETRI_TRANSITIONS=173} [2022-11-21 17:21:05,238 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-11-21 17:21:05,238 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 173 transitions, 533 flow [2022-11-21 17:21:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.5) internal successors, (789), 6 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:05,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:05,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:05,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:21:05,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:21:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1765459314, now seen corresponding path program 1 times [2022-11-21 17:21:05,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:05,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123170017] [2022-11-21 17:21:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:05,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:05,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:05,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123170017] [2022-11-21 17:21:05,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123170017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:05,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:05,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:21:05,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384399280] [2022-11-21 17:21:05,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:05,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:05,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:05,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:05,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:21:05,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 172 [2022-11-21 17:21:05,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 173 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 131.66666666666666) internal successors, (790), 6 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:05,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:05,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 172 [2022-11-21 17:21:05,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:06,057 INFO L130 PetriNetUnfolder]: 320/1670 cut-off events. [2022-11-21 17:21:06,057 INFO L131 PetriNetUnfolder]: For 990/1010 co-relation queries the response was YES. [2022-11-21 17:21:06,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2969 conditions, 1670 events. 320/1670 cut-off events. For 990/1010 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13515 event pairs, 65 based on Foata normal form. 34/1548 useless extension candidates. Maximal degree in co-relation 2146. Up to 272 conditions per place. [2022-11-21 17:21:06,080 INFO L137 encePairwiseOnDemand]: 161/172 looper letters, 65 selfloop transitions, 19 changer transitions 0/216 dead transitions. [2022-11-21 17:21:06,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 216 transitions, 868 flow [2022-11-21 17:21:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:21:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:21:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1253 transitions. [2022-11-21 17:21:06,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8094315245478036 [2022-11-21 17:21:06,085 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1253 transitions. [2022-11-21 17:21:06,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1253 transitions. [2022-11-21 17:21:06,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:06,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1253 transitions. [2022-11-21 17:21:06,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.22222222222223) internal successors, (1253), 9 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,094 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,094 INFO L175 Difference]: Start difference. First operand has 183 places, 173 transitions, 533 flow. Second operand 9 states and 1253 transitions. [2022-11-21 17:21:06,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 216 transitions, 868 flow [2022-11-21 17:21:06,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 216 transitions, 827 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-21 17:21:06,106 INFO L231 Difference]: Finished difference. Result has 189 places, 177 transitions, 580 flow [2022-11-21 17:21:06,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=580, PETRI_PLACES=189, PETRI_TRANSITIONS=177} [2022-11-21 17:21:06,107 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 32 predicate places. [2022-11-21 17:21:06,107 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 177 transitions, 580 flow [2022-11-21 17:21:06,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.66666666666666) internal successors, (790), 6 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:06,109 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:06,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:21:06,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:21:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash 611387075, now seen corresponding path program 1 times [2022-11-21 17:21:06,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:06,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089306020] [2022-11-21 17:21:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:06,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:21:06,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:06,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089306020] [2022-11-21 17:21:06,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089306020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:06,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:06,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917288669] [2022-11-21 17:21:06,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:06,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:06,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:06,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 172 [2022-11-21 17:21:06,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 177 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:06,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 172 [2022-11-21 17:21:06,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:06,702 INFO L130 PetriNetUnfolder]: 273/1862 cut-off events. [2022-11-21 17:21:06,702 INFO L131 PetriNetUnfolder]: For 1158/1205 co-relation queries the response was YES. [2022-11-21 17:21:06,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 1862 events. 273/1862 cut-off events. For 1158/1205 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 15790 event pairs, 133 based on Foata normal form. 24/1696 useless extension candidates. Maximal degree in co-relation 2553. Up to 362 conditions per place. [2022-11-21 17:21:06,728 INFO L137 encePairwiseOnDemand]: 165/172 looper letters, 55 selfloop transitions, 7 changer transitions 0/203 dead transitions. [2022-11-21 17:21:06,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 203 transitions, 842 flow [2022-11-21 17:21:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:06,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2022-11-21 17:21:06,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836046511627907 [2022-11-21 17:21:06,732 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 719 transitions. [2022-11-21 17:21:06,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 719 transitions. [2022-11-21 17:21:06,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:06,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 719 transitions. [2022-11-21 17:21:06,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,738 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,739 INFO L175 Difference]: Start difference. First operand has 189 places, 177 transitions, 580 flow. Second operand 5 states and 719 transitions. [2022-11-21 17:21:06,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 203 transitions, 842 flow [2022-11-21 17:21:06,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 203 transitions, 814 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 17:21:06,750 INFO L231 Difference]: Finished difference. Result has 192 places, 180 transitions, 610 flow [2022-11-21 17:21:06,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=610, PETRI_PLACES=192, PETRI_TRANSITIONS=180} [2022-11-21 17:21:06,751 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 35 predicate places. [2022-11-21 17:21:06,751 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 180 transitions, 610 flow [2022-11-21 17:21:06,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:06,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:06,752 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:06,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:21:06,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-21 17:21:06,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1818698688, now seen corresponding path program 1 times [2022-11-21 17:21:06,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:06,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695409864] [2022-11-21 17:21:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:21:06,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:21:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:21:06,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:21:06,799 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:21:06,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-21 17:21:06,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-21 17:21:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-21 17:21:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-21 17:21:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-21 17:21:06,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-21 17:21:06,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-21 17:21:06,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-21 17:21:06,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-21 17:21:06,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-21 17:21:06,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-21 17:21:06,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-21 17:21:06,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-21 17:21:06,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-21 17:21:06,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-21 17:21:06,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-21 17:21:06,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-21 17:21:06,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:21:06,804 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:06,805 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:21:06,805 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 17:21:06,834 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:21:06,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 210 transitions, 450 flow [2022-11-21 17:21:06,919 INFO L130 PetriNetUnfolder]: 51/430 cut-off events. [2022-11-21 17:21:06,919 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 17:21:06,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 430 events. 51/430 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1399 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2022-11-21 17:21:06,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 210 transitions, 450 flow [2022-11-21 17:21:06,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 210 transitions, 450 flow [2022-11-21 17:21:06,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:21:06,932 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;@67e09a09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:21:06,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-21 17:21:06,940 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-21 17:21:06,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:21:06,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:06,941 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] [2022-11-21 17:21:06,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:06,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1797766674, now seen corresponding path program 1 times [2022-11-21 17:21:06,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:06,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371204591] [2022-11-21 17:21:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:06,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:07,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371204591] [2022-11-21 17:21:07,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371204591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:07,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:07,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:07,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394629972] [2022-11-21 17:21:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:07,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:07,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 210 [2022-11-21 17:21:07,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 210 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:07,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:07,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 210 [2022-11-21 17:21:07,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:07,163 INFO L130 PetriNetUnfolder]: 8/366 cut-off events. [2022-11-21 17:21:07,164 INFO L131 PetriNetUnfolder]: For 96/244 co-relation queries the response was YES. [2022-11-21 17:21:07,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 366 events. 8/366 cut-off events. For 96/244 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1124 event pairs, 1 based on Foata normal form. 306/627 useless extension candidates. Maximal degree in co-relation 266. Up to 40 conditions per place. [2022-11-21 17:21:07,169 INFO L137 encePairwiseOnDemand]: 180/210 looper letters, 21 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-21 17:21:07,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 193 transitions, 466 flow [2022-11-21 17:21:07,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 910 transitions. [2022-11-21 17:21:07,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-21 17:21:07,173 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 910 transitions. [2022-11-21 17:21:07,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 910 transitions. [2022-11-21 17:21:07,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:07,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 910 transitions. [2022-11-21 17:21:07,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:07,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:07,180 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:07,180 INFO L175 Difference]: Start difference. First operand has 190 places, 210 transitions, 450 flow. Second operand 5 states and 910 transitions. [2022-11-21 17:21:07,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 193 transitions, 466 flow [2022-11-21 17:21:07,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 193 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:21:07,185 INFO L231 Difference]: Finished difference. Result has 196 places, 189 transitions, 434 flow [2022-11-21 17:21:07,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=196, PETRI_TRANSITIONS=189} [2022-11-21 17:21:07,187 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 6 predicate places. [2022-11-21 17:21:07,187 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 189 transitions, 434 flow [2022-11-21 17:21:07,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:07,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:07,188 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:07,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:21:07,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:07,189 INFO L85 PathProgramCache]: Analyzing trace with hash -806021442, now seen corresponding path program 1 times [2022-11-21 17:21:07,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:07,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459777188] [2022-11-21 17:21:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:07,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:07,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:07,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459777188] [2022-11-21 17:21:07,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459777188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:07,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:07,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:07,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478343798] [2022-11-21 17:21:07,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:07,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:07,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:07,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:07,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 210 [2022-11-21 17:21:07,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 189 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:07,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:07,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 210 [2022-11-21 17:21:07,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:09,245 INFO L130 PetriNetUnfolder]: 1859/8080 cut-off events. [2022-11-21 17:21:09,245 INFO L131 PetriNetUnfolder]: For 1117/1117 co-relation queries the response was YES. [2022-11-21 17:21:09,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11535 conditions, 8080 events. 1859/8080 cut-off events. For 1117/1117 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 88684 event pairs, 779 based on Foata normal form. 0/7063 useless extension candidates. Maximal degree in co-relation 11460. Up to 1995 conditions per place. [2022-11-21 17:21:09,464 INFO L137 encePairwiseOnDemand]: 202/210 looper letters, 52 selfloop transitions, 8 changer transitions 0/224 dead transitions. [2022-11-21 17:21:09,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 224 transitions, 666 flow [2022-11-21 17:21:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 869 transitions. [2022-11-21 17:21:09,468 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8276190476190476 [2022-11-21 17:21:09,469 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 869 transitions. [2022-11-21 17:21:09,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 869 transitions. [2022-11-21 17:21:09,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:09,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 869 transitions. [2022-11-21 17:21:09,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,477 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,478 INFO L175 Difference]: Start difference. First operand has 196 places, 189 transitions, 434 flow. Second operand 5 states and 869 transitions. [2022-11-21 17:21:09,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 224 transitions, 666 flow [2022-11-21 17:21:09,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 224 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:21:09,486 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 496 flow [2022-11-21 17:21:09,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-11-21 17:21:09,488 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 12 predicate places. [2022-11-21 17:21:09,488 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 496 flow [2022-11-21 17:21:09,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:09,490 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:09,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:21:09,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:09,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1349571359, now seen corresponding path program 1 times [2022-11-21 17:21:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:09,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216683767] [2022-11-21 17:21:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:09,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:21:09,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:09,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216683767] [2022-11-21 17:21:09,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216683767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:09,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:09,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:09,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433860647] [2022-11-21 17:21:09,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:09,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:09,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:09,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:09,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:09,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 210 [2022-11-21 17:21:09,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:09,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 210 [2022-11-21 17:21:09,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:09,894 INFO L130 PetriNetUnfolder]: 38/869 cut-off events. [2022-11-21 17:21:09,894 INFO L131 PetriNetUnfolder]: For 346/858 co-relation queries the response was YES. [2022-11-21 17:21:09,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 869 events. 38/869 cut-off events. For 346/858 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5198 event pairs, 7 based on Foata normal form. 41/798 useless extension candidates. Maximal degree in co-relation 774. Up to 52 conditions per place. [2022-11-21 17:21:09,912 INFO L137 encePairwiseOnDemand]: 204/210 looper letters, 13 selfloop transitions, 8 changer transitions 0/196 dead transitions. [2022-11-21 17:21:09,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 196 transitions, 536 flow [2022-11-21 17:21:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 859 transitions. [2022-11-21 17:21:09,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180952380952381 [2022-11-21 17:21:09,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 859 transitions. [2022-11-21 17:21:09,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 859 transitions. [2022-11-21 17:21:09,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:09,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 859 transitions. [2022-11-21 17:21:09,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.8) internal successors, (859), 5 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,927 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,927 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 496 flow. Second operand 5 states and 859 transitions. [2022-11-21 17:21:09,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 196 transitions, 536 flow [2022-11-21 17:21:09,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 196 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:21:09,934 INFO L231 Difference]: Finished difference. Result has 205 places, 196 transitions, 512 flow [2022-11-21 17:21:09,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=205, PETRI_TRANSITIONS=196} [2022-11-21 17:21:09,936 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 15 predicate places. [2022-11-21 17:21:09,936 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 196 transitions, 512 flow [2022-11-21 17:21:09,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:09,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:09,938 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:09,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:21:09,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:09,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1112960142, now seen corresponding path program 1 times [2022-11-21 17:21:09,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:09,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615592255] [2022-11-21 17:21:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:09,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:10,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:10,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615592255] [2022-11-21 17:21:10,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615592255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:21:10,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845441320] [2022-11-21 17:21:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:10,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:21:10,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:21:10,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:21:10,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:21:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:10,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:21:10,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:21:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:10,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:21:10,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845441320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:10,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:21:10,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:21:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034810546] [2022-11-21 17:21:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:10,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:21:10,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 210 [2022-11-21 17:21:10,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 196 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:10,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:10,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 210 [2022-11-21 17:21:10,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:10,673 INFO L130 PetriNetUnfolder]: 38/867 cut-off events. [2022-11-21 17:21:10,673 INFO L131 PetriNetUnfolder]: For 343/808 co-relation queries the response was YES. [2022-11-21 17:21:10,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 867 events. 38/867 cut-off events. For 343/808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5204 event pairs, 7 based on Foata normal form. 18/773 useless extension candidates. Maximal degree in co-relation 774. Up to 58 conditions per place. [2022-11-21 17:21:10,690 INFO L137 encePairwiseOnDemand]: 205/210 looper letters, 17 selfloop transitions, 6 changer transitions 0/198 dead transitions. [2022-11-21 17:21:10,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 198 transitions, 560 flow [2022-11-21 17:21:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:21:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:21:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-11-21 17:21:10,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8163265306122449 [2022-11-21 17:21:10,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1200 transitions. [2022-11-21 17:21:10,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1200 transitions. [2022-11-21 17:21:10,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:10,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1200 transitions. [2022-11-21 17:21:10,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.42857142857142) internal successors, (1200), 7 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:10,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:10,704 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:10,705 INFO L175 Difference]: Start difference. First operand has 205 places, 196 transitions, 512 flow. Second operand 7 states and 1200 transitions. [2022-11-21 17:21:10,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 198 transitions, 560 flow [2022-11-21 17:21:10,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 198 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:21:10,711 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 508 flow [2022-11-21 17:21:10,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2022-11-21 17:21:10,712 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 17 predicate places. [2022-11-21 17:21:10,712 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 508 flow [2022-11-21 17:21:10,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:10,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:10,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:10,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:21:10,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 17:21:10,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash -29537492, now seen corresponding path program 1 times [2022-11-21 17:21:10,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:10,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034501643] [2022-11-21 17:21:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:10,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:11,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:11,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034501643] [2022-11-21 17:21:11,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034501643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:11,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:11,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:21:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055513749] [2022-11-21 17:21:11,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:11,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:11,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:21:11,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 210 [2022-11-21 17:21:11,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 195 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 157.5) internal successors, (945), 6 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:11,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:11,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 210 [2022-11-21 17:21:11,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:14,806 INFO L130 PetriNetUnfolder]: 4010/15162 cut-off events. [2022-11-21 17:21:14,806 INFO L131 PetriNetUnfolder]: For 4241/4241 co-relation queries the response was YES. [2022-11-21 17:21:14,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24193 conditions, 15162 events. 4010/15162 cut-off events. For 4241/4241 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 183241 event pairs, 1122 based on Foata normal form. 0/13282 useless extension candidates. Maximal degree in co-relation 10033. Up to 2727 conditions per place. [2022-11-21 17:21:15,018 INFO L137 encePairwiseOnDemand]: 197/210 looper letters, 100 selfloop transitions, 27 changer transitions 0/285 dead transitions. [2022-11-21 17:21:15,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 285 transitions, 1088 flow [2022-11-21 17:21:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:21:15,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:21:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1533 transitions. [2022-11-21 17:21:15,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2022-11-21 17:21:15,024 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1533 transitions. [2022-11-21 17:21:15,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1533 transitions. [2022-11-21 17:21:15,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:15,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1533 transitions. [2022-11-21 17:21:15,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.33333333333334) internal successors, (1533), 9 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:15,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:15,046 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:15,055 INFO L175 Difference]: Start difference. First operand has 207 places, 195 transitions, 508 flow. Second operand 9 states and 1533 transitions. [2022-11-21 17:21:15,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 285 transitions, 1088 flow [2022-11-21 17:21:15,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 285 transitions, 1077 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-21 17:21:15,068 INFO L231 Difference]: Finished difference. Result has 216 places, 214 transitions, 701 flow [2022-11-21 17:21:15,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=701, PETRI_PLACES=216, PETRI_TRANSITIONS=214} [2022-11-21 17:21:15,071 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 26 predicate places. [2022-11-21 17:21:15,071 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 214 transitions, 701 flow [2022-11-21 17:21:15,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.5) internal successors, (945), 6 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:15,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:15,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:15,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:21:15,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash -915661418, now seen corresponding path program 1 times [2022-11-21 17:21:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:15,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898185620] [2022-11-21 17:21:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:15,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:15,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898185620] [2022-11-21 17:21:15,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898185620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:15,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:15,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:21:15,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321566019] [2022-11-21 17:21:15,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:15,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:15,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:21:15,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 210 [2022-11-21 17:21:15,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 214 transitions, 701 flow. Second operand has 6 states, 6 states have (on average 157.66666666666666) internal successors, (946), 6 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:15,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:15,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 210 [2022-11-21 17:21:15,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:18,985 INFO L130 PetriNetUnfolder]: 3801/14486 cut-off events. [2022-11-21 17:21:18,985 INFO L131 PetriNetUnfolder]: For 13235/13427 co-relation queries the response was YES. [2022-11-21 17:21:19,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28170 conditions, 14486 events. 3801/14486 cut-off events. For 13235/13427 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 172189 event pairs, 1157 based on Foata normal form. 226/13155 useless extension candidates. Maximal degree in co-relation 19336. Up to 2976 conditions per place. [2022-11-21 17:21:19,183 INFO L137 encePairwiseOnDemand]: 197/210 looper letters, 107 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2022-11-21 17:21:19,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 292 transitions, 1346 flow [2022-11-21 17:21:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:21:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:21:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1531 transitions. [2022-11-21 17:21:19,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81005291005291 [2022-11-21 17:21:19,188 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1531 transitions. [2022-11-21 17:21:19,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1531 transitions. [2022-11-21 17:21:19,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:19,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1531 transitions. [2022-11-21 17:21:19,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.11111111111111) internal successors, (1531), 9 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:19,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:19,198 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:19,199 INFO L175 Difference]: Start difference. First operand has 216 places, 214 transitions, 701 flow. Second operand 9 states and 1531 transitions. [2022-11-21 17:21:19,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 292 transitions, 1346 flow [2022-11-21 17:21:19,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 292 transitions, 1279 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-21 17:21:19,251 INFO L231 Difference]: Finished difference. Result has 222 places, 222 transitions, 782 flow [2022-11-21 17:21:19,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=782, PETRI_PLACES=222, PETRI_TRANSITIONS=222} [2022-11-21 17:21:19,252 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 32 predicate places. [2022-11-21 17:21:19,252 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 222 transitions, 782 flow [2022-11-21 17:21:19,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.66666666666666) internal successors, (946), 6 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:19,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:19,253 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:19,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:21:19,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2052602187, now seen corresponding path program 1 times [2022-11-21 17:21:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:19,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45265316] [2022-11-21 17:21:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:19,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:21:19,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:19,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45265316] [2022-11-21 17:21:19,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45265316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:19,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:19,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360746341] [2022-11-21 17:21:19,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:19,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:19,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 210 [2022-11-21 17:21:19,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 222 transitions, 782 flow. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:19,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:19,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 210 [2022-11-21 17:21:19,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:23,099 INFO L130 PetriNetUnfolder]: 4311/18758 cut-off events. [2022-11-21 17:21:23,099 INFO L131 PetriNetUnfolder]: For 17027/17501 co-relation queries the response was YES. [2022-11-21 17:21:23,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36446 conditions, 18758 events. 4311/18758 cut-off events. For 17027/17501 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 240650 event pairs, 2448 based on Foata normal form. 230/16796 useless extension candidates. Maximal degree in co-relation 25675. Up to 4728 conditions per place. [2022-11-21 17:21:23,410 INFO L137 encePairwiseOnDemand]: 202/210 looper letters, 93 selfloop transitions, 11 changer transitions 0/271 dead transitions. [2022-11-21 17:21:23,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 271 transitions, 1298 flow [2022-11-21 17:21:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 867 transitions. [2022-11-21 17:21:23,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8257142857142857 [2022-11-21 17:21:23,417 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 867 transitions. [2022-11-21 17:21:23,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 867 transitions. [2022-11-21 17:21:23,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:23,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 867 transitions. [2022-11-21 17:21:23,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.4) internal successors, (867), 5 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:23,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:23,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:23,425 INFO L175 Difference]: Start difference. First operand has 222 places, 222 transitions, 782 flow. Second operand 5 states and 867 transitions. [2022-11-21 17:21:23,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 271 transitions, 1298 flow [2022-11-21 17:21:23,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 271 transitions, 1256 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 17:21:23,524 INFO L231 Difference]: Finished difference. Result has 225 places, 227 transitions, 832 flow [2022-11-21 17:21:23,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=832, PETRI_PLACES=225, PETRI_TRANSITIONS=227} [2022-11-21 17:21:23,525 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 35 predicate places. [2022-11-21 17:21:23,526 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 227 transitions, 832 flow [2022-11-21 17:21:23,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:23,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:23,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:23,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:21:23,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1449777911, now seen corresponding path program 1 times [2022-11-21 17:21:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:23,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585579222] [2022-11-21 17:21:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:21:23,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:23,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585579222] [2022-11-21 17:21:23,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585579222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:23,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:23,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:21:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217980482] [2022-11-21 17:21:23,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:23,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:23,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:23,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:23,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:21:23,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 210 [2022-11-21 17:21:23,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 227 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 157.66666666666666) internal successors, (946), 6 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:23,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:23,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 210 [2022-11-21 17:21:23,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:31,188 INFO L130 PetriNetUnfolder]: 9326/35771 cut-off events. [2022-11-21 17:21:31,189 INFO L131 PetriNetUnfolder]: For 32066/33320 co-relation queries the response was YES. [2022-11-21 17:21:31,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71636 conditions, 35771 events. 9326/35771 cut-off events. For 32066/33320 co-relation queries the response was YES. Maximal size of possible extension queue 1622. Compared 502640 event pairs, 3517 based on Foata normal form. 444/32618 useless extension candidates. Maximal degree in co-relation 49388. Up to 7085 conditions per place. [2022-11-21 17:21:31,708 INFO L137 encePairwiseOnDemand]: 197/210 looper letters, 149 selfloop transitions, 46 changer transitions 0/357 dead transitions. [2022-11-21 17:21:31,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 357 transitions, 1978 flow [2022-11-21 17:21:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:21:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:21:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1530 transitions. [2022-11-21 17:21:31,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-11-21 17:21:31,713 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1530 transitions. [2022-11-21 17:21:31,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1530 transitions. [2022-11-21 17:21:31,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:31,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1530 transitions. [2022-11-21 17:21:31,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:31,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:31,727 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:31,728 INFO L175 Difference]: Start difference. First operand has 225 places, 227 transitions, 832 flow. Second operand 9 states and 1530 transitions. [2022-11-21 17:21:31,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 357 transitions, 1978 flow [2022-11-21 17:21:32,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 357 transitions, 1972 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:21:32,008 INFO L231 Difference]: Finished difference. Result has 238 places, 262 transitions, 1316 flow [2022-11-21 17:21:32,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1316, PETRI_PLACES=238, PETRI_TRANSITIONS=262} [2022-11-21 17:21:32,010 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 48 predicate places. [2022-11-21 17:21:32,011 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 262 transitions, 1316 flow [2022-11-21 17:21:32,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.66666666666666) internal successors, (946), 6 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:32,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:32,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:32,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:21:32,012 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:32,013 INFO L85 PathProgramCache]: Analyzing trace with hash 590430169, now seen corresponding path program 1 times [2022-11-21 17:21:32,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:32,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592217164] [2022-11-21 17:21:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:32,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:32,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:32,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592217164] [2022-11-21 17:21:32,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592217164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:21:32,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681138021] [2022-11-21 17:21:32,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:32,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:21:32,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:21:32,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:21:32,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:21:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:32,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:21:32,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:21:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:32,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:21:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:32,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681138021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:21:32,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:21:32,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-21 17:21:32,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678165697] [2022-11-21 17:21:32,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:21:32,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:21:32,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:32,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:21:32,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:21:32,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 210 [2022-11-21 17:21:32,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 262 transitions, 1316 flow. Second operand has 14 states, 14 states have (on average 126.14285714285714) internal successors, (1766), 14 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:32,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:32,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 210 [2022-11-21 17:21:32,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:42,451 INFO L130 PetriNetUnfolder]: 8730/33414 cut-off events. [2022-11-21 17:21:42,451 INFO L131 PetriNetUnfolder]: For 44820/45497 co-relation queries the response was YES. [2022-11-21 17:21:42,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70233 conditions, 33414 events. 8730/33414 cut-off events. For 44820/45497 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 438238 event pairs, 1230 based on Foata normal form. 2348/33332 useless extension candidates. Maximal degree in co-relation 57289. Up to 6256 conditions per place. [2022-11-21 17:21:42,864 INFO L137 encePairwiseOnDemand]: 185/210 looper letters, 490 selfloop transitions, 232 changer transitions 0/850 dead transitions. [2022-11-21 17:21:42,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 850 transitions, 5607 flow [2022-11-21 17:21:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-21 17:21:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-21 17:21:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 6115 transitions. [2022-11-21 17:21:42,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.647089947089947 [2022-11-21 17:21:42,885 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 6115 transitions. [2022-11-21 17:21:42,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 6115 transitions. [2022-11-21 17:21:42,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:42,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 6115 transitions. [2022-11-21 17:21:42,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 135.88888888888889) internal successors, (6115), 45 states have internal predecessors, (6115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:42,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:42,930 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:42,931 INFO L175 Difference]: Start difference. First operand has 238 places, 262 transitions, 1316 flow. Second operand 45 states and 6115 transitions. [2022-11-21 17:21:42,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 850 transitions, 5607 flow [2022-11-21 17:21:43,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 850 transitions, 5540 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-21 17:21:43,292 INFO L231 Difference]: Finished difference. Result has 298 places, 451 transitions, 3427 flow [2022-11-21 17:21:43,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3427, PETRI_PLACES=298, PETRI_TRANSITIONS=451} [2022-11-21 17:21:43,294 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 108 predicate places. [2022-11-21 17:21:43,294 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 451 transitions, 3427 flow [2022-11-21 17:21:43,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 126.14285714285714) internal successors, (1766), 14 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:43,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:43,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:43,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:21:43,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:21:43,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:43,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1993443043, now seen corresponding path program 1 times [2022-11-21 17:21:43,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:43,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164772789] [2022-11-21 17:21:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:43,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:21:43,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:43,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164772789] [2022-11-21 17:21:43,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164772789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:43,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:43,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:21:43,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854615037] [2022-11-21 17:21:43,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:43,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:21:43,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:43,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:21:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:21:43,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 210 [2022-11-21 17:21:43,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 451 transitions, 3427 flow. Second operand has 6 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:43,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:43,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 210 [2022-11-21 17:21:43,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:49,916 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([819] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_13|} AuxVars[] AssignedVars[][328], [1054#true, Black: 1021#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1011#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 989#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1005#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 995#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 997#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 987#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 965#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 993#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 961#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1007#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1023#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1001#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1013#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1017#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 108#L702-16true, Black: 427#(<= ~global~0 1), Black: 428#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 432#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 426#(= |t_funThread1of3ForFork0_#t~post5| 0), t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 453#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 446#(<= 1 ~global~0), 213#true, 131#L714-5true, Black: 198#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), 467#true, Black: 460#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 462#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 208#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 459#(= ~global~0 0), Black: 205#(= ~global~0 0), Black: 206#(= |t_funThread1of3ForFork0_#t~post5| 0), 226#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 478#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 470#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 471#(<= ~global~0 1), Black: 472#(<= |t_funThread2of3ForFork0_#t~post7| 1), 971#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 476#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 447#(<= 1 |t_funThread1of3ForFork0_#t~post7|), 434#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1))]) [2022-11-21 17:21:49,916 INFO L383 tUnfolder$Statistics]: this new event has 175 ancestors and is cut-off event [2022-11-21 17:21:49,916 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-21 17:21:49,916 INFO L386 tUnfolder$Statistics]: existing Event has 175 ancestors and is cut-off event [2022-11-21 17:21:49,916 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-21 17:21:50,030 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([818] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][412], [Black: 1021#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1011#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 989#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1005#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 995#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 997#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 987#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 965#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 993#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 961#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1007#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1023#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1001#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1013#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1017#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 442#true, 112#L702-16true, Black: 427#(<= ~global~0 1), Black: 428#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 432#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 426#(= |t_funThread1of3ForFork0_#t~post5| 0), 1059#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 434#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 453#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 446#(<= 1 ~global~0), Black: 198#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), 213#true, 131#L714-5true, Black: 460#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 462#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 208#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 459#(= ~global~0 0), Black: 205#(= ~global~0 0), Black: 206#(= |t_funThread1of3ForFork0_#t~post5| 0), 423#true, 226#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 470#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 471#(<= ~global~0 1), Black: 472#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 467#true, 971#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 476#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 478#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1))]) [2022-11-21 17:21:50,031 INFO L383 tUnfolder$Statistics]: this new event has 175 ancestors and is cut-off event [2022-11-21 17:21:50,031 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-21 17:21:50,031 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-21 17:21:50,031 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-21 17:21:50,082 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([818] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][226], [1054#true, Black: 1021#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1011#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 989#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1005#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 995#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 997#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 987#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 965#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 993#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 961#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1007#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1023#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1001#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1013#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1017#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 442#true, Black: 427#(<= ~global~0 1), Black: 428#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 432#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 426#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 434#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 453#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), 145#L702-17true, Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 446#(<= 1 ~global~0), Black: 198#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), 213#true, 131#L714-5true, Black: 460#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 462#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 208#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 459#(= ~global~0 0), Black: 205#(= ~global~0 0), Black: 206#(= |t_funThread1of3ForFork0_#t~post5| 0), 423#true, 226#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 478#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 470#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 472#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 467#true, 971#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 476#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 471#(<= ~global~0 1)]) [2022-11-21 17:21:50,083 INFO L383 tUnfolder$Statistics]: this new event has 176 ancestors and is cut-off event [2022-11-21 17:21:50,083 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-21 17:21:50,083 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-21 17:21:50,083 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-21 17:21:50,170 INFO L130 PetriNetUnfolder]: 3623/26937 cut-off events. [2022-11-21 17:21:50,170 INFO L131 PetriNetUnfolder]: For 56888/58031 co-relation queries the response was YES. [2022-11-21 17:21:50,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54014 conditions, 26937 events. 3623/26937 cut-off events. For 56888/58031 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 394613 event pairs, 1522 based on Foata normal form. 436/24227 useless extension candidates. Maximal degree in co-relation 53051. Up to 4598 conditions per place. [2022-11-21 17:21:50,581 INFO L137 encePairwiseOnDemand]: 197/210 looper letters, 219 selfloop transitions, 63 changer transitions 0/525 dead transitions. [2022-11-21 17:21:50,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 525 transitions, 4584 flow [2022-11-21 17:21:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:21:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 17:21:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1524 transitions. [2022-11-21 17:21:50,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8063492063492064 [2022-11-21 17:21:50,587 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1524 transitions. [2022-11-21 17:21:50,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1524 transitions. [2022-11-21 17:21:50,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:50,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1524 transitions. [2022-11-21 17:21:50,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 169.33333333333334) internal successors, (1524), 9 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:50,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:50,598 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:50,599 INFO L175 Difference]: Start difference. First operand has 298 places, 451 transitions, 3427 flow. Second operand 9 states and 1524 transitions. [2022-11-21 17:21:50,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 525 transitions, 4584 flow [2022-11-21 17:21:51,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 525 transitions, 4132 flow, removed 178 selfloop flow, removed 9 redundant places. [2022-11-21 17:21:51,013 INFO L231 Difference]: Finished difference. Result has 298 places, 453 transitions, 3180 flow [2022-11-21 17:21:51,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3180, PETRI_PLACES=298, PETRI_TRANSITIONS=453} [2022-11-21 17:21:51,014 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 108 predicate places. [2022-11-21 17:21:51,014 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 453 transitions, 3180 flow [2022-11-21 17:21:51,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:51,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:51,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:21:51,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1790880423, now seen corresponding path program 1 times [2022-11-21 17:21:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:51,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325484597] [2022-11-21 17:21:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 17:21:51,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:51,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325484597] [2022-11-21 17:21:51,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325484597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:51,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:51,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123089475] [2022-11-21 17:21:51,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:51,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:51,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:51,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 210 [2022-11-21 17:21:51,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 453 transitions, 3180 flow. Second operand has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 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) [2022-11-21 17:21:51,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:51,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 210 [2022-11-21 17:21:51,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:56,826 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([818] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][214], [Black: 1021#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1011#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 989#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1005#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 995#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 997#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 987#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 965#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 993#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 1068#true, Black: 961#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1007#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1023#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1001#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1013#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1017#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 442#true, Black: 1065#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), 112#L702-16true, Black: 427#(<= ~global~0 1), Black: 428#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 432#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), 1059#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 426#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 434#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 453#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 446#(<= 1 ~global~0), 131#L714-5true, Black: 198#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), 213#true, Black: 460#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 462#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 459#(= ~global~0 0), Black: 208#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 205#(= ~global~0 0), Black: 206#(= |t_funThread1of3ForFork0_#t~post5| 0), 423#true, 226#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 470#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 471#(<= ~global~0 1), Black: 472#(<= |t_funThread2of3ForFork0_#t~post7| 1), 971#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 476#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 478#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1))]) [2022-11-21 17:21:56,826 INFO L383 tUnfolder$Statistics]: this new event has 175 ancestors and is cut-off event [2022-11-21 17:21:56,827 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-21 17:21:56,827 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-21 17:21:56,827 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-21 17:21:57,006 INFO L130 PetriNetUnfolder]: 3049/24608 cut-off events. [2022-11-21 17:21:57,006 INFO L131 PetriNetUnfolder]: For 49502/50735 co-relation queries the response was YES. [2022-11-21 17:21:57,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47979 conditions, 24608 events. 3049/24608 cut-off events. For 49502/50735 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 358523 event pairs, 1431 based on Foata normal form. 412/21960 useless extension candidates. Maximal degree in co-relation 47019. Up to 4592 conditions per place. [2022-11-21 17:21:57,348 INFO L137 encePairwiseOnDemand]: 202/210 looper letters, 201 selfloop transitions, 15 changer transitions 0/499 dead transitions. [2022-11-21 17:21:57,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 499 transitions, 4080 flow [2022-11-21 17:21:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 865 transitions. [2022-11-21 17:21:57,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8238095238095238 [2022-11-21 17:21:57,352 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 865 transitions. [2022-11-21 17:21:57,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 865 transitions. [2022-11-21 17:21:57,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:57,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 865 transitions. [2022-11-21 17:21:57,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:57,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:57,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:57,359 INFO L175 Difference]: Start difference. First operand has 298 places, 453 transitions, 3180 flow. Second operand 5 states and 865 transitions. [2022-11-21 17:21:57,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 499 transitions, 4080 flow [2022-11-21 17:21:57,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 499 transitions, 3992 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-21 17:21:57,616 INFO L231 Difference]: Finished difference. Result has 301 places, 457 transitions, 3196 flow [2022-11-21 17:21:57,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3105, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3196, PETRI_PLACES=301, PETRI_TRANSITIONS=457} [2022-11-21 17:21:57,618 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 111 predicate places. [2022-11-21 17:21:57,618 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 457 transitions, 3196 flow [2022-11-21 17:21:57,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 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) [2022-11-21 17:21:57,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:57,619 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:57,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 17:21:57,619 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-21 17:21:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1225055226, now seen corresponding path program 1 times [2022-11-21 17:21:57,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:57,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15067759] [2022-11-21 17:21:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:57,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:21:57,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:21:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:21:57,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:21:57,706 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:21:57,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-21 17:21:57,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-21 17:21:57,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-21 17:21:57,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-21 17:21:57,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-21 17:21:57,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-21 17:21:57,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-21 17:21:57,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-21 17:21:57,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-21 17:21:57,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-21 17:21:57,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-21 17:21:57,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-21 17:21:57,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-21 17:21:57,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-21 17:21:57,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-21 17:21:57,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-21 17:21:57,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-21 17:21:57,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-21 17:21:57,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-21 17:21:57,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-21 17:21:57,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-21 17:21:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 17:21:57,713 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:57,715 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 17:21:57,715 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-21 17:21:57,762 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 17:21:57,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 248 transitions, 540 flow [2022-11-21 17:21:57,952 INFO L130 PetriNetUnfolder]: 82/665 cut-off events. [2022-11-21 17:21:57,952 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-21 17:21:57,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 665 events. 82/665 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2570 event pairs, 6 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 450. Up to 32 conditions per place. [2022-11-21 17:21:57,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 248 transitions, 540 flow [2022-11-21 17:21:57,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 248 transitions, 540 flow [2022-11-21 17:21:57,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:21:57,974 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;@67e09a09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:21:57,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-21 17:21:57,982 INFO L130 PetriNetUnfolder]: 3/71 cut-off events. [2022-11-21 17:21:57,983 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:21:57,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:57,983 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] [2022-11-21 17:21:57,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 17:21:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1113517258, now seen corresponding path program 1 times [2022-11-21 17:21:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:57,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057084841] [2022-11-21 17:21:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:57,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:58,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:58,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057084841] [2022-11-21 17:21:58,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057084841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:58,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:58,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:58,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794725752] [2022-11-21 17:21:58,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:58,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:58,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 248 [2022-11-21 17:21:58,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 248 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:58,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:58,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 248 [2022-11-21 17:21:58,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:21:58,302 INFO L130 PetriNetUnfolder]: 21/582 cut-off events. [2022-11-21 17:21:58,303 INFO L131 PetriNetUnfolder]: For 176/382 co-relation queries the response was YES. [2022-11-21 17:21:58,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 582 events. 21/582 cut-off events. For 176/382 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2331 event pairs, 6 based on Foata normal form. 629/1134 useless extension candidates. Maximal degree in co-relation 433. Up to 71 conditions per place. [2022-11-21 17:21:58,313 INFO L137 encePairwiseOnDemand]: 212/248 looper letters, 23 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2022-11-21 17:21:58,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 225 transitions, 548 flow [2022-11-21 17:21:58,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:21:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:21:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1068 transitions. [2022-11-21 17:21:58,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8612903225806452 [2022-11-21 17:21:58,317 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1068 transitions. [2022-11-21 17:21:58,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1068 transitions. [2022-11-21 17:21:58,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:21:58,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1068 transitions. [2022-11-21 17:21:58,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.6) internal successors, (1068), 5 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:58,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:58,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:58,325 INFO L175 Difference]: Start difference. First operand has 223 places, 248 transitions, 540 flow. Second operand 5 states and 1068 transitions. [2022-11-21 17:21:58,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 225 transitions, 548 flow [2022-11-21 17:21:58,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 225 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:21:58,332 INFO L231 Difference]: Finished difference. Result has 229 places, 221 transitions, 512 flow [2022-11-21 17:21:58,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=229, PETRI_TRANSITIONS=221} [2022-11-21 17:21:58,335 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 6 predicate places. [2022-11-21 17:21:58,335 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 221 transitions, 512 flow [2022-11-21 17:21:58,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:58,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:21:58,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:21:58,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 17:21:58,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 17:21:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:21:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash 967903714, now seen corresponding path program 1 times [2022-11-21 17:21:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:21:58,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901532051] [2022-11-21 17:21:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:21:58,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:21:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:21:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:21:58,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:21:58,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901532051] [2022-11-21 17:21:58,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901532051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:21:58,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:21:58,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:21:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745394561] [2022-11-21 17:21:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:21:58,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:21:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:21:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:21:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:21:58,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 248 [2022-11-21 17:21:58,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 221 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:21:58,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:21:58,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 248 [2022-11-21 17:21:58,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:22:08,607 INFO L130 PetriNetUnfolder]: 15407/55174 cut-off events. [2022-11-21 17:22:08,608 INFO L131 PetriNetUnfolder]: For 9909/9909 co-relation queries the response was YES. [2022-11-21 17:22:09,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80601 conditions, 55174 events. 15407/55174 cut-off events. For 9909/9909 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 778756 event pairs, 10404 based on Foata normal form. 0/47899 useless extension candidates. Maximal degree in co-relation 80525. Up to 15266 conditions per place. [2022-11-21 17:22:09,283 INFO L137 encePairwiseOnDemand]: 239/248 looper letters, 68 selfloop transitions, 10 changer transitions 0/268 dead transitions. [2022-11-21 17:22:09,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 268 transitions, 834 flow [2022-11-21 17:22:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:22:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:22:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1017 transitions. [2022-11-21 17:22:09,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8201612903225807 [2022-11-21 17:22:09,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1017 transitions. [2022-11-21 17:22:09,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1017 transitions. [2022-11-21 17:22:09,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:22:09,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1017 transitions. [2022-11-21 17:22:09,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,292 INFO L175 Difference]: Start difference. First operand has 229 places, 221 transitions, 512 flow. Second operand 5 states and 1017 transitions. [2022-11-21 17:22:09,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 268 transitions, 834 flow [2022-11-21 17:22:09,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 268 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:22:09,306 INFO L231 Difference]: Finished difference. Result has 235 places, 230 transitions, 589 flow [2022-11-21 17:22:09,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=589, PETRI_PLACES=235, PETRI_TRANSITIONS=230} [2022-11-21 17:22:09,307 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-11-21 17:22:09,308 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 230 transitions, 589 flow [2022-11-21 17:22:09,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,308 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:22:09,309 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:09,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 17:22:09,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 17:22:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:09,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1418418791, now seen corresponding path program 1 times [2022-11-21 17:22:09,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:22:09,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147929341] [2022-11-21 17:22:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:09,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:22:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:22:09,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:22:09,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147929341] [2022-11-21 17:22:09,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147929341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:09,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:22:09,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:22:09,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381550042] [2022-11-21 17:22:09,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:09,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:22:09,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:22:09,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:22:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:22:09,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 248 [2022-11-21 17:22:09,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 230 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:22:09,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 248 [2022-11-21 17:22:09,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:22:09,822 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1103] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][135], [32#L702-6true, Black: 231#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), Black: 229#(= |ULTIMATE.start_main_#t~post9#1| 0), Black: 228#(= |ULTIMATE.start_main_~i~1#1| 0), 246#true, Black: 241#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 238#(= ~global~0 0), Black: 239#(= |t_funThread1of4ForFork0_#t~post5| 0), 236#true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, 188#L714-5true, t_funThread4of4ForFork0NotInUse]) [2022-11-21 17:22:09,822 INFO L383 tUnfolder$Statistics]: this new event has 213 ancestors and is cut-off event [2022-11-21 17:22:09,822 INFO L386 tUnfolder$Statistics]: existing Event has 166 ancestors and is cut-off event [2022-11-21 17:22:09,822 INFO L386 tUnfolder$Statistics]: existing Event has 119 ancestors and is cut-off event [2022-11-21 17:22:09,823 INFO L386 tUnfolder$Statistics]: existing Event has 213 ancestors and is cut-off event [2022-11-21 17:22:09,842 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1103] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][135], [Black: 231#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), Black: 229#(= |ULTIMATE.start_main_#t~post9#1| 0), Black: 228#(= |ULTIMATE.start_main_~i~1#1| 0), 246#true, Black: 241#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 238#(= ~global~0 0), Black: 239#(= |t_funThread1of4ForFork0_#t~post5| 0), 236#true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, 188#L714-5true, t_funThread4of4ForFork0NotInUse]) [2022-11-21 17:22:09,842 INFO L383 tUnfolder$Statistics]: this new event has 238 ancestors and is cut-off event [2022-11-21 17:22:09,842 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-21 17:22:09,842 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-21 17:22:09,843 INFO L386 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-11-21 17:22:09,845 INFO L130 PetriNetUnfolder]: 162/2498 cut-off events. [2022-11-21 17:22:09,845 INFO L131 PetriNetUnfolder]: For 1035/2559 co-relation queries the response was YES. [2022-11-21 17:22:09,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 2498 events. 162/2498 cut-off events. For 1035/2559 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 20659 event pairs, 59 based on Foata normal form. 99/2220 useless extension candidates. Maximal degree in co-relation 2424. Up to 194 conditions per place. [2022-11-21 17:22:09,884 INFO L137 encePairwiseOnDemand]: 242/248 looper letters, 15 selfloop transitions, 8 changer transitions 0/230 dead transitions. [2022-11-21 17:22:09,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 230 transitions, 633 flow [2022-11-21 17:22:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:22:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:22:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2022-11-21 17:22:09,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8153225806451613 [2022-11-21 17:22:09,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2022-11-21 17:22:09,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2022-11-21 17:22:09,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:22:09,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2022-11-21 17:22:09,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,894 INFO L175 Difference]: Start difference. First operand has 235 places, 230 transitions, 589 flow. Second operand 5 states and 1011 transitions. [2022-11-21 17:22:09,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 230 transitions, 633 flow [2022-11-21 17:22:09,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 230 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:22:09,901 INFO L231 Difference]: Finished difference. Result has 238 places, 230 transitions, 604 flow [2022-11-21 17:22:09,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=604, PETRI_PLACES=238, PETRI_TRANSITIONS=230} [2022-11-21 17:22:09,904 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 15 predicate places. [2022-11-21 17:22:09,904 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 230 transitions, 604 flow [2022-11-21 17:22:09,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:09,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:22:09,905 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:22:09,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 17:22:09,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-21 17:22:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:22:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1021310498, now seen corresponding path program 1 times [2022-11-21 17:22:09,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:22:09,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070706571] [2022-11-21 17:22:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:22:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:22:09,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070706571] [2022-11-21 17:22:09,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070706571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:22:09,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426864040] [2022-11-21 17:22:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:22:09,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:22:09,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:22:09,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:22:10,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8367348-47f4-4fd4-9e7a-f9c76b9877d3/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:22:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:22:10,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:22:10,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:22:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:22:10,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:22:10,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426864040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:22:10,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:22:10,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:22:10,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911828665] [2022-11-21 17:22:10,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:22:10,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:22:10,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:22:10,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:22:10,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:22:10,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 248 [2022-11-21 17:22:10,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 230 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 200.66666666666666) internal successors, (1204), 6 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:22:10,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:22:10,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 248 [2022-11-21 17:22:10,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand