./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro --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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- 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-8393723 [2022-11-18 20:15:59,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:15:59,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:15:59,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:15:59,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:15:59,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:15:59,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:15:59,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:15:59,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:15:59,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:15:59,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:15:59,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:15:59,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:15:59,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:15:59,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:15:59,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:15:59,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:15:59,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:15:59,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:15:59,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:15:59,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:15:59,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:15:59,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:15:59,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:15:59,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:15:59,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:15:59,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:15:59,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:15:59,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:15:59,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:15:59,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:15:59,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:15:59,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:15:59,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:15:59,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:15:59,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:15:59,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:15:59,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:15:59,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:15:59,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:15:59,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:15:59,493 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:15:59,538 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:15:59,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:15:59,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:15:59,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:15:59,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:15:59,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:15:59,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:15:59,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:15:59,543 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:15:59,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:15:59,544 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:15:59,545 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:15:59,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:15:59,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:15:59,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:15:59,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:15:59,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:15:59,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:15:59,546 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:15:59,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:15:59,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:15:59,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:15:59,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:15:59,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:15:59,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:15:59,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:15:59,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:59,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:15:59,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:15:59,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:15:59,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:15:59,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:15:59,552 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:15:59,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:15:59,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:15:59,553 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_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2022-11-18 20:15:59,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:15:59,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:15:59,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:15:59,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:15:59,905 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:15:59,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-11-18 20:15:59,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/data/ee4184189/e0e1a1e5bdd04afb867ec6b7096ce286/FLAG9f9775fb6 [2022-11-18 20:16:00,625 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:16:00,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-11-18 20:16:00,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/data/ee4184189/e0e1a1e5bdd04afb867ec6b7096ce286/FLAG9f9775fb6 [2022-11-18 20:16:00,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/data/ee4184189/e0e1a1e5bdd04afb867ec6b7096ce286 [2022-11-18 20:16:00,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:16:00,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:16:00,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:16:00,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:16:00,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:16:00,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:16:00" (1/1) ... [2022-11-18 20:16:00,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f115f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:00, skipping insertion in model container [2022-11-18 20:16:00,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:16:00" (1/1) ... [2022-11-18 20:16:00,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:16:00,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:16:01,427 WARN L234 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_a02d4a0b-1544-4724-abf1-33309b443421/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2022-11-18 20:16:01,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:16:01,469 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:16:01,527 WARN L234 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_a02d4a0b-1544-4724-abf1-33309b443421/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2022-11-18 20:16:01,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:16:01,585 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:16:01,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01 WrapperNode [2022-11-18 20:16:01,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:16:01,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:16:01,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:16:01,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:16:01,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,656 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-11-18 20:16:01,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:16:01,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:16:01,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:16:01,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:16:01,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,703 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:16:01,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:16:01,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:16:01,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:16:01,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (1/1) ... [2022-11-18 20:16:01,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:16:01,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:01,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:16:01,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:16:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:16:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:16:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:16:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:16:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:16:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:16:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:16:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:16:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:16:01,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:16:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:16:01,793 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:16:01,924 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:16:01,926 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:16:02,291 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:16:02,299 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:16:02,300 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 20:16:02,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:16:02 BoogieIcfgContainer [2022-11-18 20:16:02,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:16:02,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:16:02,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:16:02,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:16:02,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:16:00" (1/3) ... [2022-11-18 20:16:02,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec13420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:16:02, skipping insertion in model container [2022-11-18 20:16:02,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:16:01" (2/3) ... [2022-11-18 20:16:02,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec13420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:16:02, skipping insertion in model container [2022-11-18 20:16:02,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:16:02" (3/3) ... [2022-11-18 20:16:02,331 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2022-11-18 20:16:02,340 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:16:02,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:16:02,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:16:02,351 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:16:02,415 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:16:02,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 144 transitions, 296 flow [2022-11-18 20:16:02,596 INFO L130 PetriNetUnfolder]: 17/182 cut-off events. [2022-11-18 20:16:02,596 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:16:02,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 427 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-11-18 20:16:02,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 144 transitions, 296 flow [2022-11-18 20:16:02,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 141 transitions, 290 flow [2022-11-18 20:16:02,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:16:02,648 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;@58c80f8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:16:02,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-18 20:16:02,678 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2022-11-18 20:16:02,679 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:16:02,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:02,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:02,681 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)] === [2022-11-18 20:16:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1639260597, now seen corresponding path program 1 times [2022-11-18 20:16:02,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:02,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445004693] [2022-11-18 20:16:02,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:02,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:03,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:03,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445004693] [2022-11-18 20:16:03,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445004693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:03,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:03,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:03,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312772785] [2022-11-18 20:16:03,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:03,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:03,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:03,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:03,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 144 [2022-11-18 20:16:03,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 141 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:03,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 144 [2022-11-18 20:16:03,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:03,377 INFO L130 PetriNetUnfolder]: 0/131 cut-off events. [2022-11-18 20:16:03,377 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-18 20:16:03,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 131 events. 0/131 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 37/160 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-18 20:16:03,379 INFO L137 encePairwiseOnDemand]: 126/144 looper letters, 10 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2022-11-18 20:16:03,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 129 transitions, 294 flow [2022-11-18 20:16:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:16:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2022-11-18 20:16:03,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8847222222222222 [2022-11-18 20:16:03,396 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2022-11-18 20:16:03,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2022-11-18 20:16:03,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:03,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2022-11-18 20:16:03,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,417 INFO L175 Difference]: Start difference. First operand has 133 places, 141 transitions, 290 flow. Second operand 5 states and 637 transitions. [2022-11-18 20:16:03,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 129 transitions, 294 flow [2022-11-18 20:16:03,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 129 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:16:03,424 INFO L231 Difference]: Finished difference. Result has 135 places, 127 transitions, 274 flow [2022-11-18 20:16:03,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=135, PETRI_TRANSITIONS=127} [2022-11-18 20:16:03,430 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2022-11-18 20:16:03,431 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 127 transitions, 274 flow [2022-11-18 20:16:03,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:03,432 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] [2022-11-18 20:16:03,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:16:03,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-18 20:16:03,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1967914783, now seen corresponding path program 1 times [2022-11-18 20:16:03,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:03,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107694407] [2022-11-18 20:16:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:03,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:16:03,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:16:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:16:03,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:16:03,507 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:16:03,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-18 20:16:03,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-18 20:16:03,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-18 20:16:03,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-18 20:16:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-18 20:16:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-18 20:16:03,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-18 20:16:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-18 20:16:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-18 20:16:03,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-18 20:16:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-18 20:16:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-18 20:16:03,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-18 20:16:03,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:16:03,516 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 20:16:03,518 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:16:03,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:16:03,554 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:16:03,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 189 transitions, 396 flow [2022-11-18 20:16:03,604 INFO L130 PetriNetUnfolder]: 31/302 cut-off events. [2022-11-18 20:16:03,605 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:16:03,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 302 events. 31/302 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 925 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2022-11-18 20:16:03,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 189 transitions, 396 flow [2022-11-18 20:16:03,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 189 transitions, 396 flow [2022-11-18 20:16:03,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:16:03,615 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;@58c80f8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:16:03,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 20:16:03,622 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2022-11-18 20:16:03,623 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:16:03,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:03,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:03,624 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)] === [2022-11-18 20:16:03,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash 715027104, now seen corresponding path program 1 times [2022-11-18 20:16:03,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:03,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104236216] [2022-11-18 20:16:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:03,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:03,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:03,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104236216] [2022-11-18 20:16:03,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104236216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:03,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:03,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:03,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484770186] [2022-11-18 20:16:03,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:03,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:03,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:03,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:03,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:03,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 189 [2022-11-18 20:16:03,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 189 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:03,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 189 [2022-11-18 20:16:03,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:03,850 INFO L130 PetriNetUnfolder]: 2/250 cut-off events. [2022-11-18 20:16:03,850 INFO L131 PetriNetUnfolder]: For 34/104 co-relation queries the response was YES. [2022-11-18 20:16:03,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 250 events. 2/250 cut-off events. For 34/104 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 568 event pairs, 0 based on Foata normal form. 99/325 useless extension candidates. Maximal degree in co-relation 154. Up to 21 conditions per place. [2022-11-18 20:16:03,852 INFO L137 encePairwiseOnDemand]: 165/189 looper letters, 19 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2022-11-18 20:16:03,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 178 transitions, 420 flow [2022-11-18 20:16:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:16:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 837 transitions. [2022-11-18 20:16:03,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2022-11-18 20:16:03,856 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 837 transitions. [2022-11-18 20:16:03,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 837 transitions. [2022-11-18 20:16:03,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:03,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 837 transitions. [2022-11-18 20:16:03,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.4) internal successors, (837), 5 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,862 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,862 INFO L175 Difference]: Start difference. First operand has 175 places, 189 transitions, 396 flow. Second operand 5 states and 837 transitions. [2022-11-18 20:16:03,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 178 transitions, 420 flow [2022-11-18 20:16:03,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 178 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:16:03,867 INFO L231 Difference]: Finished difference. Result has 181 places, 174 transitions, 392 flow [2022-11-18 20:16:03,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=181, PETRI_TRANSITIONS=174} [2022-11-18 20:16:03,868 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 6 predicate places. [2022-11-18 20:16:03,868 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 174 transitions, 392 flow [2022-11-18 20:16:03,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:03,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:03,869 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] [2022-11-18 20:16:03,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:16:03,870 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)] === [2022-11-18 20:16:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:03,870 INFO L85 PathProgramCache]: Analyzing trace with hash 698893546, now seen corresponding path program 1 times [2022-11-18 20:16:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:03,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699755668] [2022-11-18 20:16:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:04,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:04,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699755668] [2022-11-18 20:16:04,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699755668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:04,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:04,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:16:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431876279] [2022-11-18 20:16:04,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:04,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:16:04,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:04,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:16:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:16:04,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 189 [2022-11-18 20:16:04,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 174 transitions, 392 flow. Second operand has 9 states, 9 states have (on average 126.11111111111111) internal successors, (1135), 9 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:04,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:04,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 189 [2022-11-18 20:16:04,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:05,697 INFO L130 PetriNetUnfolder]: 1161/4475 cut-off events. [2022-11-18 20:16:05,697 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2022-11-18 20:16:05,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6602 conditions, 4475 events. 1161/4475 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 43513 event pairs, 216 based on Foata normal form. 0/4077 useless extension candidates. Maximal degree in co-relation 6506. Up to 810 conditions per place. [2022-11-18 20:16:05,735 INFO L137 encePairwiseOnDemand]: 175/189 looper letters, 144 selfloop transitions, 29 changer transitions 0/299 dead transitions. [2022-11-18 20:16:05,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 299 transitions, 1022 flow [2022-11-18 20:16:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:16:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:16:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2149 transitions. [2022-11-18 20:16:05,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7106481481481481 [2022-11-18 20:16:05,742 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2149 transitions. [2022-11-18 20:16:05,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2149 transitions. [2022-11-18 20:16:05,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:05,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2149 transitions. [2022-11-18 20:16:05,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 134.3125) internal successors, (2149), 16 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:05,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 189.0) internal successors, (3213), 17 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:05,757 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 189.0) internal successors, (3213), 17 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:05,757 INFO L175 Difference]: Start difference. First operand has 181 places, 174 transitions, 392 flow. Second operand 16 states and 2149 transitions. [2022-11-18 20:16:05,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 299 transitions, 1022 flow [2022-11-18 20:16:05,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 299 transitions, 1020 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:16:05,765 INFO L231 Difference]: Finished difference. Result has 205 places, 202 transitions, 605 flow [2022-11-18 20:16:05,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=605, PETRI_PLACES=205, PETRI_TRANSITIONS=202} [2022-11-18 20:16:05,767 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 30 predicate places. [2022-11-18 20:16:05,767 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 202 transitions, 605 flow [2022-11-18 20:16:05,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.11111111111111) internal successors, (1135), 9 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:05,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:05,768 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, 1, 1] [2022-11-18 20:16:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:16:05,769 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)] === [2022-11-18 20:16:05,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:05,769 INFO L85 PathProgramCache]: Analyzing trace with hash 803577050, now seen corresponding path program 1 times [2022-11-18 20:16:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:05,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588723781] [2022-11-18 20:16:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:05,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:16:05,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:05,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588723781] [2022-11-18 20:16:05,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588723781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:05,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:05,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:05,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414697723] [2022-11-18 20:16:05,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:05,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:05,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:05,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:05,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:05,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 189 [2022-11-18 20:16:05,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 202 transitions, 605 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:05,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:05,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 189 [2022-11-18 20:16:05,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:06,081 INFO L130 PetriNetUnfolder]: 57/846 cut-off events. [2022-11-18 20:16:06,081 INFO L131 PetriNetUnfolder]: For 371/512 co-relation queries the response was YES. [2022-11-18 20:16:06,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 846 events. 57/846 cut-off events. For 371/512 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5064 event pairs, 17 based on Foata normal form. 21/788 useless extension candidates. Maximal degree in co-relation 1140. Up to 74 conditions per place. [2022-11-18 20:16:06,091 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 11 selfloop transitions, 8 changer transitions 0/202 dead transitions. [2022-11-18 20:16:06,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 202 transitions, 641 flow [2022-11-18 20:16:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:16:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2022-11-18 20:16:06,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8380952380952381 [2022-11-18 20:16:06,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2022-11-18 20:16:06,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2022-11-18 20:16:06,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:06,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2022-11-18 20:16:06,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,099 INFO L175 Difference]: Start difference. First operand has 205 places, 202 transitions, 605 flow. Second operand 5 states and 792 transitions. [2022-11-18 20:16:06,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 202 transitions, 641 flow [2022-11-18 20:16:06,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 202 transitions, 640 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:16:06,111 INFO L231 Difference]: Finished difference. Result has 208 places, 202 transitions, 624 flow [2022-11-18 20:16:06,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=208, PETRI_TRANSITIONS=202} [2022-11-18 20:16:06,114 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 33 predicate places. [2022-11-18 20:16:06,114 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 202 transitions, 624 flow [2022-11-18 20:16:06,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:06,115 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, 1, 1] [2022-11-18 20:16:06,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:16:06,116 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)] === [2022-11-18 20:16:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash -858914690, now seen corresponding path program 1 times [2022-11-18 20:16:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:06,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295463633] [2022-11-18 20:16:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:06,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295463633] [2022-11-18 20:16:06,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295463633] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816963633] [2022-11-18 20:16:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:06,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:06,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:06,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:16:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:06,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:16:06,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:06,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:16:06,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816963633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:06,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:16:06,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:16:06,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047560279] [2022-11-18 20:16:06,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:06,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:16:06,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 189 [2022-11-18 20:16:06,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 202 transitions, 624 flow. Second operand has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:06,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 189 [2022-11-18 20:16:06,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:06,758 INFO L130 PetriNetUnfolder]: 57/845 cut-off events. [2022-11-18 20:16:06,758 INFO L131 PetriNetUnfolder]: For 380/512 co-relation queries the response was YES. [2022-11-18 20:16:06,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 845 events. 57/845 cut-off events. For 380/512 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5051 event pairs, 17 based on Foata normal form. 9/775 useless extension candidates. Maximal degree in co-relation 1150. Up to 74 conditions per place. [2022-11-18 20:16:06,769 INFO L137 encePairwiseOnDemand]: 185/189 looper letters, 13 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2022-11-18 20:16:06,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 201 transitions, 656 flow [2022-11-18 20:16:06,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:16:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 635 transitions. [2022-11-18 20:16:06,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.83994708994709 [2022-11-18 20:16:06,773 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 635 transitions. [2022-11-18 20:16:06,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 635 transitions. [2022-11-18 20:16:06,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:06,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 635 transitions. [2022-11-18 20:16:06,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 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) [2022-11-18 20:16:06,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 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) [2022-11-18 20:16:06,778 INFO L175 Difference]: Start difference. First operand has 208 places, 202 transitions, 624 flow. Second operand 4 states and 635 transitions. [2022-11-18 20:16:06,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 201 transitions, 656 flow [2022-11-18 20:16:06,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 201 transitions, 644 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:16:06,788 INFO L231 Difference]: Finished difference. Result has 207 places, 201 transitions, 618 flow [2022-11-18 20:16:06,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=618, PETRI_PLACES=207, PETRI_TRANSITIONS=201} [2022-11-18 20:16:06,792 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 32 predicate places. [2022-11-18 20:16:06,792 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 201 transitions, 618 flow [2022-11-18 20:16:06,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.2) internal successors, (791), 5 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:06,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:06,793 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:06,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:06,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:06,999 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)] === [2022-11-18 20:16:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1172136467, now seen corresponding path program 1 times [2022-11-18 20:16:07,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:07,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38194014] [2022-11-18 20:16:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:07,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:07,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:07,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38194014] [2022-11-18 20:16:07,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38194014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:07,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:07,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:07,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228955365] [2022-11-18 20:16:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:07,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:16:07,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:16:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:16:07,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 189 [2022-11-18 20:16:07,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 201 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:07,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:07,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 189 [2022-11-18 20:16:07,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:09,007 INFO L130 PetriNetUnfolder]: 1896/7596 cut-off events. [2022-11-18 20:16:09,007 INFO L131 PetriNetUnfolder]: For 5706/6072 co-relation queries the response was YES. [2022-11-18 20:16:09,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13866 conditions, 7596 events. 1896/7596 cut-off events. For 5706/6072 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 83104 event pairs, 682 based on Foata normal form. 72/6726 useless extension candidates. Maximal degree in co-relation 13102. Up to 1369 conditions per place. [2022-11-18 20:16:09,141 INFO L137 encePairwiseOnDemand]: 175/189 looper letters, 137 selfloop transitions, 35 changer transitions 0/312 dead transitions. [2022-11-18 20:16:09,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 312 transitions, 1385 flow [2022-11-18 20:16:09,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:16:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:16:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1550 transitions. [2022-11-18 20:16:09,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7455507455507455 [2022-11-18 20:16:09,147 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1550 transitions. [2022-11-18 20:16:09,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1550 transitions. [2022-11-18 20:16:09,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:09,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1550 transitions. [2022-11-18 20:16:09,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.9090909090909) internal successors, (1550), 11 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 189.0) internal successors, (2268), 12 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,158 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 189.0) internal successors, (2268), 12 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,158 INFO L175 Difference]: Start difference. First operand has 207 places, 201 transitions, 618 flow. Second operand 11 states and 1550 transitions. [2022-11-18 20:16:09,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 312 transitions, 1385 flow [2022-11-18 20:16:09,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 312 transitions, 1375 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:16:09,196 INFO L231 Difference]: Finished difference. Result has 221 places, 228 transitions, 898 flow [2022-11-18 20:16:09,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=898, PETRI_PLACES=221, PETRI_TRANSITIONS=228} [2022-11-18 20:16:09,198 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 46 predicate places. [2022-11-18 20:16:09,198 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 228 transitions, 898 flow [2022-11-18 20:16:09,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:09,199 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] [2022-11-18 20:16:09,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:16:09,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 20:16:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2070317647, now seen corresponding path program 1 times [2022-11-18 20:16:09,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:09,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215366048] [2022-11-18 20:16:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:16:09,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:16:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:16:09,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:16:09,263 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:16:09,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 20:16:09,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 20:16:09,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 20:16:09,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 20:16:09,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 20:16:09,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 20:16:09,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 20:16:09,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 20:16:09,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 20:16:09,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 20:16:09,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 20:16:09,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 20:16:09,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 20:16:09,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 20:16:09,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 20:16:09,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 20:16:09,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 20:16:09,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:16:09,271 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 20:16:09,278 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:16:09,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:16:09,337 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:16:09,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 234 transitions, 498 flow [2022-11-18 20:16:09,448 INFO L130 PetriNetUnfolder]: 50/463 cut-off events. [2022-11-18 20:16:09,448 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 20:16:09,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 50/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1646 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 310. Up to 16 conditions per place. [2022-11-18 20:16:09,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 234 transitions, 498 flow [2022-11-18 20:16:09,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 234 transitions, 498 flow [2022-11-18 20:16:09,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:16:09,473 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;@58c80f8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:16:09,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 20:16:09,481 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-11-18 20:16:09,481 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:16:09,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:09,482 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:09,482 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)] === [2022-11-18 20:16:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1197460939, now seen corresponding path program 1 times [2022-11-18 20:16:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:09,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96995354] [2022-11-18 20:16:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:09,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:09,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:09,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96995354] [2022-11-18 20:16:09,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96995354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:09,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:09,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:09,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716534468] [2022-11-18 20:16:09,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:09,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:09,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 234 [2022-11-18 20:16:09,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 234 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:09,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 234 [2022-11-18 20:16:09,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:09,708 INFO L130 PetriNetUnfolder]: 7/396 cut-off events. [2022-11-18 20:16:09,708 INFO L131 PetriNetUnfolder]: For 105/280 co-relation queries the response was YES. [2022-11-18 20:16:09,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 396 events. 7/396 cut-off events. For 105/280 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1241 event pairs, 1 based on Foata normal form. 248/600 useless extension candidates. Maximal degree in co-relation 286. Up to 40 conditions per place. [2022-11-18 20:16:09,713 INFO L137 encePairwiseOnDemand]: 204/234 looper letters, 21 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2022-11-18 20:16:09,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 217 transitions, 514 flow [2022-11-18 20:16:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:16:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1030 transitions. [2022-11-18 20:16:09,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8803418803418803 [2022-11-18 20:16:09,718 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1030 transitions. [2022-11-18 20:16:09,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1030 transitions. [2022-11-18 20:16:09,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:09,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1030 transitions. [2022-11-18 20:16:09,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,729 INFO L175 Difference]: Start difference. First operand has 215 places, 234 transitions, 498 flow. Second operand 5 states and 1030 transitions. [2022-11-18 20:16:09,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 217 transitions, 514 flow [2022-11-18 20:16:09,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 217 transitions, 514 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:16:09,735 INFO L231 Difference]: Finished difference. Result has 221 places, 213 transitions, 482 flow [2022-11-18 20:16:09,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=221, PETRI_TRANSITIONS=213} [2022-11-18 20:16:09,738 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 6 predicate places. [2022-11-18 20:16:09,738 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 213 transitions, 482 flow [2022-11-18 20:16:09,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:09,740 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] [2022-11-18 20:16:09,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:16:09,740 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)] === [2022-11-18 20:16:09,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:09,741 INFO L85 PathProgramCache]: Analyzing trace with hash -670250347, now seen corresponding path program 1 times [2022-11-18 20:16:09,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:09,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113440184] [2022-11-18 20:16:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:09,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:09,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113440184] [2022-11-18 20:16:09,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113440184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:09,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:09,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:16:09,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274492393] [2022-11-18 20:16:09,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:09,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:16:09,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:16:09,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:16:09,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 234 [2022-11-18 20:16:09,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 213 transitions, 482 flow. Second operand has 9 states, 9 states have (on average 158.11111111111111) internal successors, (1423), 9 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:09,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:09,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 234 [2022-11-18 20:16:09,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:18,148 INFO L130 PetriNetUnfolder]: 14036/41484 cut-off events. [2022-11-18 20:16:18,148 INFO L131 PetriNetUnfolder]: For 1563/1563 co-relation queries the response was YES. [2022-11-18 20:16:18,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62851 conditions, 41484 events. 14036/41484 cut-off events. For 1563/1563 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 532452 event pairs, 2909 based on Foata normal form. 0/38081 useless extension candidates. Maximal degree in co-relation 62754. Up to 9351 conditions per place. [2022-11-18 20:16:18,625 INFO L137 encePairwiseOnDemand]: 219/234 looper letters, 213 selfloop transitions, 35 changer transitions 0/406 dead transitions. [2022-11-18 20:16:18,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 406 transitions, 1449 flow [2022-11-18 20:16:18,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:16:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:16:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2736 transitions. [2022-11-18 20:16:18,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2022-11-18 20:16:18,632 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2736 transitions. [2022-11-18 20:16:18,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2736 transitions. [2022-11-18 20:16:18,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:18,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2736 transitions. [2022-11-18 20:16:18,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.0) internal successors, (2736), 16 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:18,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 234.0) internal successors, (3978), 17 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:18,651 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 234.0) internal successors, (3978), 17 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:18,652 INFO L175 Difference]: Start difference. First operand has 221 places, 213 transitions, 482 flow. Second operand 16 states and 2736 transitions. [2022-11-18 20:16:18,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 406 transitions, 1449 flow [2022-11-18 20:16:18,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 406 transitions, 1447 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:16:18,663 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 739 flow [2022-11-18 20:16:18,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=739, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-18 20:16:18,665 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 30 predicate places. [2022-11-18 20:16:18,666 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 739 flow [2022-11-18 20:16:18,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 158.11111111111111) internal successors, (1423), 9 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:18,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:18,667 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, 1, 1] [2022-11-18 20:16:18,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:16:18,668 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)] === [2022-11-18 20:16:18,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:18,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1227587152, now seen corresponding path program 1 times [2022-11-18 20:16:18,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:18,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145514274] [2022-11-18 20:16:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:18,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:16:18,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:18,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145514274] [2022-11-18 20:16:18,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145514274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:18,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:18,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:16:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782787232] [2022-11-18 20:16:18,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:18,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:16:18,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:18,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:16:18,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:16:18,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 234 [2022-11-18 20:16:18,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 739 flow. Second operand has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:18,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:18,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 234 [2022-11-18 20:16:18,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:19,384 INFO L130 PetriNetUnfolder]: 274/2764 cut-off events. [2022-11-18 20:16:19,384 INFO L131 PetriNetUnfolder]: For 2087/2907 co-relation queries the response was YES. [2022-11-18 20:16:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 2764 events. 274/2764 cut-off events. For 2087/2907 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 25322 event pairs, 107 based on Foata normal form. 53/2514 useless extension candidates. Maximal degree in co-relation 4100. Up to 343 conditions per place. [2022-11-18 20:16:19,418 INFO L137 encePairwiseOnDemand]: 228/234 looper letters, 13 selfloop transitions, 8 changer transitions 0/247 dead transitions. [2022-11-18 20:16:19,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 247 transitions, 779 flow [2022-11-18 20:16:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:16:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:16:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 979 transitions. [2022-11-18 20:16:19,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8367521367521368 [2022-11-18 20:16:19,426 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 979 transitions. [2022-11-18 20:16:19,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 979 transitions. [2022-11-18 20:16:19,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:19,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 979 transitions. [2022-11-18 20:16:19,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:19,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:19,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 234.0) internal successors, (1404), 6 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:19,443 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 739 flow. Second operand 5 states and 979 transitions. [2022-11-18 20:16:19,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 247 transitions, 779 flow [2022-11-18 20:16:19,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 247 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:16:19,457 INFO L231 Difference]: Finished difference. Result has 248 places, 247 transitions, 758 flow [2022-11-18 20:16:19,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=758, PETRI_PLACES=248, PETRI_TRANSITIONS=247} [2022-11-18 20:16:19,459 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 33 predicate places. [2022-11-18 20:16:19,460 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 247 transitions, 758 flow [2022-11-18 20:16:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:19,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:19,461 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, 1, 1] [2022-11-18 20:16:19,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:16:19,461 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)] === [2022-11-18 20:16:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 599504722, now seen corresponding path program 1 times [2022-11-18 20:16:19,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:19,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340191023] [2022-11-18 20:16:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:19,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340191023] [2022-11-18 20:16:19,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340191023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:19,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188866886] [2022-11-18 20:16:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:19,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:19,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:19,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:19,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:16:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:19,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:16:19,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:19,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:16:19,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188866886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:19,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:16:19,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:16:19,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111322214] [2022-11-18 20:16:19,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:19,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:16:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:19,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:16:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:16:19,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 234 [2022-11-18 20:16:19,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 247 transitions, 758 flow. Second operand has 5 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:19,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:19,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 234 [2022-11-18 20:16:19,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:20,277 INFO L130 PetriNetUnfolder]: 272/2774 cut-off events. [2022-11-18 20:16:20,277 INFO L131 PetriNetUnfolder]: For 2074/2830 co-relation queries the response was YES. [2022-11-18 20:16:20,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 2774 events. 272/2774 cut-off events. For 2074/2830 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 25431 event pairs, 108 based on Foata normal form. 21/2491 useless extension candidates. Maximal degree in co-relation 4116. Up to 340 conditions per place. [2022-11-18 20:16:20,315 INFO L137 encePairwiseOnDemand]: 230/234 looper letters, 15 selfloop transitions, 5 changer transitions 0/246 dead transitions. [2022-11-18 20:16:20,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 246 transitions, 794 flow [2022-11-18 20:16:20,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:16:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:16:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 785 transitions. [2022-11-18 20:16:20,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8386752136752137 [2022-11-18 20:16:20,319 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 785 transitions. [2022-11-18 20:16:20,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 785 transitions. [2022-11-18 20:16:20,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:20,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 785 transitions. [2022-11-18 20:16:20,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,326 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,327 INFO L175 Difference]: Start difference. First operand has 248 places, 247 transitions, 758 flow. Second operand 4 states and 785 transitions. [2022-11-18 20:16:20,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 246 transitions, 794 flow [2022-11-18 20:16:20,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 782 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:16:20,339 INFO L231 Difference]: Finished difference. Result has 247 places, 246 transitions, 752 flow [2022-11-18 20:16:20,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=752, PETRI_PLACES=247, PETRI_TRANSITIONS=246} [2022-11-18 20:16:20,340 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 32 predicate places. [2022-11-18 20:16:20,340 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 246 transitions, 752 flow [2022-11-18 20:16:20,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:20,342 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:20,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:16:20,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:20,548 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)] === [2022-11-18 20:16:20,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -599167800, now seen corresponding path program 1 times [2022-11-18 20:16:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:20,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933646413] [2022-11-18 20:16:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:16:20,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:20,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933646413] [2022-11-18 20:16:20,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933646413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:16:20,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:16:20,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:16:20,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782717154] [2022-11-18 20:16:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:16:20,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:16:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:16:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:16:20,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 234 [2022-11-18 20:16:20,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 246 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:20,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:20,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 234 [2022-11-18 20:16:20,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:16:39,225 INFO L130 PetriNetUnfolder]: 23702/78679 cut-off events. [2022-11-18 20:16:39,226 INFO L131 PetriNetUnfolder]: For 82488/85858 co-relation queries the response was YES. [2022-11-18 20:16:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149592 conditions, 78679 events. 23702/78679 cut-off events. For 82488/85858 co-relation queries the response was YES. Maximal size of possible extension queue 2352. Compared 1144108 event pairs, 9334 based on Foata normal form. 290/70319 useless extension candidates. Maximal degree in co-relation 141768. Up to 14456 conditions per place. [2022-11-18 20:16:40,461 INFO L137 encePairwiseOnDemand]: 218/234 looper letters, 205 selfloop transitions, 45 changer transitions 0/422 dead transitions. [2022-11-18 20:16:40,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 422 transitions, 2011 flow [2022-11-18 20:16:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:16:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:16:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1972 transitions. [2022-11-18 20:16:40,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7661227661227661 [2022-11-18 20:16:40,472 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1972 transitions. [2022-11-18 20:16:40,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1972 transitions. [2022-11-18 20:16:40,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:16:40,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1972 transitions. [2022-11-18 20:16:40,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 179.27272727272728) internal successors, (1972), 11 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:40,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 234.0) internal successors, (2808), 12 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:40,512 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 234.0) internal successors, (2808), 12 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:40,512 INFO L175 Difference]: Start difference. First operand has 247 places, 246 transitions, 752 flow. Second operand 11 states and 1972 transitions. [2022-11-18 20:16:40,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 422 transitions, 2011 flow [2022-11-18 20:16:41,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 422 transitions, 2001 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:16:41,190 INFO L231 Difference]: Finished difference. Result has 261 places, 283 transitions, 1166 flow [2022-11-18 20:16:41,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1166, PETRI_PLACES=261, PETRI_TRANSITIONS=283} [2022-11-18 20:16:41,192 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 46 predicate places. [2022-11-18 20:16:41,192 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 283 transitions, 1166 flow [2022-11-18 20:16:41,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.33333333333334) internal successors, (980), 6 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:41,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:16:41,194 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] [2022-11-18 20:16:41,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:16:41,194 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 20:16:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:41,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1367922938, now seen corresponding path program 1 times [2022-11-18 20:16:41,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:16:41,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685144704] [2022-11-18 20:16:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:16:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:16:41,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:16:41,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685144704] [2022-11-18 20:16:41,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685144704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:41,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818235802] [2022-11-18 20:16:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:16:41,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:16:41,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:16:41,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:16:41,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02d4a0b-1544-4724-abf1-33309b443421/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:16:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:41,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:16:41,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:41,890 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:16:41,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 20:16:41,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:16:42,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:16:42,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:16:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:16:42,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:42,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-18 20:16:42,753 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 20:16:42,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-18 20:16:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:16:42,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818235802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:42,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:16:42,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-11-18 20:16:42,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807541186] [2022-11-18 20:16:42,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:42,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:16:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:16:42,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:16:42,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=309, Unknown=1, NotChecked=0, Total=380 [2022-11-18 20:16:42,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 234 [2022-11-18 20:16:42,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 283 transitions, 1166 flow. Second operand has 20 states, 20 states have (on average 157.65) internal successors, (3153), 20 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:16:42,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:16:42,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 234 [2022-11-18 20:16:42,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand