./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe031_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe031_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 --- 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-e04fb08 [2022-11-16 12:30:06,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:30:06,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:30:06,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:30:06,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:30:06,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:30:06,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:30:06,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:30:06,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:30:06,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:30:06,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:30:06,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:30:06,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:30:06,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:30:06,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:30:06,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:30:06,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:30:06,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:30:06,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:30:06,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:30:06,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:30:06,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:30:06,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:30:06,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:30:06,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:30:06,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:30:06,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:30:06,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:30:06,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:30:06,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:30:06,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:30:06,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:30:06,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:30:06,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:30:06,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:30:06,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:30:06,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:30:06,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:30:06,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:30:06,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:30:06,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:30:06,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:30:06,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:30:06,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:30:06,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:30:06,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:30:06,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:30:06,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:30:06,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:30:06,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:30:06,626 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:30:06,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:30:06,627 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:30:06,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:30:06,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:30:06,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:30:06,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:30:06,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:30:06,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:30:06,629 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:30:06,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:30:06,629 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:30:06,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:30:06,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:30:06,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:30:06,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:30:06,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:30:06,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:30:06,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:30:06,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:30:06,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:30:06,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:30:06,631 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:30:06,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:30:06,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:30:06,632 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_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 [2022-11-16 12:30:06,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:30:06,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:30:06,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:30:06,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:30:06,997 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:30:06,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-wmm/safe031_tso.i [2022-11-16 12:30:07,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/data/704131246/4eddbcbf287748969431dd9d06a33dff/FLAG6a60c1c73 [2022-11-16 12:30:07,642 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:30:07,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/sv-benchmarks/c/pthread-wmm/safe031_tso.i [2022-11-16 12:30:07,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/data/704131246/4eddbcbf287748969431dd9d06a33dff/FLAG6a60c1c73 [2022-11-16 12:30:07,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/data/704131246/4eddbcbf287748969431dd9d06a33dff [2022-11-16 12:30:07,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:30:07,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:30:07,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:30:07,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:30:07,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:30:07,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:30:07" (1/1) ... [2022-11-16 12:30:07,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7446066f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:07, skipping insertion in model container [2022-11-16 12:30:07,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:30:07" (1/1) ... [2022-11-16 12:30:07,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:30:07,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:30:08,179 WARN L229 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_8f0d0b6b-777f-408a-92da-0439b297ff1b/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2022-11-16 12:30:08,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:30:08,412 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:30:08,426 WARN L229 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_8f0d0b6b-777f-408a-92da-0439b297ff1b/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2022-11-16 12:30:08,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:30:08,495 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:30:08,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08 WrapperNode [2022-11-16 12:30:08,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:30:08,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:30:08,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:30:08,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:30:08,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,573 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-16 12:30:08,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:30:08,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:30:08,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:30:08,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:30:08,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:30:08,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:30:08,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:30:08,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:30:08,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (1/1) ... [2022-11-16 12:30:08,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:30:08,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:30:08,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:30:08,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:30:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:30:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-16 12:30:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-16 12:30:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-16 12:30:08,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-16 12:30:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-16 12:30:08,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-16 12:30:08,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:30:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:30:08,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:30:08,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:30:08,702 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:30:08,852 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:30:08,854 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:30:09,049 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:30:09,057 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:30:09,057 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:30:09,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:30:09 BoogieIcfgContainer [2022-11-16 12:30:09,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:30:09,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:30:09,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:30:09,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:30:09,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:30:07" (1/3) ... [2022-11-16 12:30:09,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634bc850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:30:09, skipping insertion in model container [2022-11-16 12:30:09,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:08" (2/3) ... [2022-11-16 12:30:09,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634bc850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:30:09, skipping insertion in model container [2022-11-16 12:30:09,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:30:09" (3/3) ... [2022-11-16 12:30:09,071 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2022-11-16 12:30:09,081 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:30:09,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:30:09,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:30:09,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:30:09,246 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 12:30:09,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-11-16 12:30:09,382 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-11-16 12:30:09,382 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:30:09,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-16 12:30:09,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-11-16 12:30:09,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-11-16 12:30:09,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:30:09,410 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;@1ff7ee5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:30:09,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:30:09,433 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-11-16 12:30:09,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:30:09,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:09,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:09,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:30:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:09,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1061334334, now seen corresponding path program 1 times [2022-11-16 12:30:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738567981] [2022-11-16 12:30:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:09,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:10,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:10,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738567981] [2022-11-16 12:30:10,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738567981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:10,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:10,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:30:10,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694631027] [2022-11-16 12:30:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:10,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:30:10,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:30:10,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:30:10,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2022-11-16 12:30:10,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:10,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:10,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2022-11-16 12:30:10,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:10,866 INFO L130 PetriNetUnfolder]: 26/159 cut-off events. [2022-11-16 12:30:10,866 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:30:10,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 159 events. 26/159 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 440 event pairs, 5 based on Foata normal form. 6/162 useless extension candidates. Maximal degree in co-relation 207. Up to 35 conditions per place. [2022-11-16 12:30:10,871 INFO L137 encePairwiseOnDemand]: 83/91 looper letters, 13 selfloop transitions, 3 changer transitions 19/96 dead transitions. [2022-11-16 12:30:10,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 277 flow [2022-11-16 12:30:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:30:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:30:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 714 transitions. [2022-11-16 12:30:10,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2022-11-16 12:30:10,901 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 714 transitions. [2022-11-16 12:30:10,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 714 transitions. [2022-11-16 12:30:10,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:10,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 714 transitions. [2022-11-16 12:30:10,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:10,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:10,933 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:10,936 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 9 states and 714 transitions. [2022-11-16 12:30:10,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 277 flow [2022-11-16 12:30:10,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:30:10,951 INFO L231 Difference]: Finished difference. Result has 95 places, 75 transitions, 195 flow [2022-11-16 12:30:10,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=195, PETRI_PLACES=95, PETRI_TRANSITIONS=75} [2022-11-16 12:30:10,959 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2022-11-16 12:30:10,959 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 195 flow [2022-11-16 12:30:10,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:10,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:10,961 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:10,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:30:10,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:30:10,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1864476329, now seen corresponding path program 1 times [2022-11-16 12:30:10,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:10,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100473197] [2022-11-16 12:30:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:10,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:11,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:11,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100473197] [2022-11-16 12:30:11,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100473197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:11,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:11,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:30:11,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313750864] [2022-11-16 12:30:11,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:11,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:30:11,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:30:11,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:30:11,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2022-11-16 12:30:11,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:11,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:11,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2022-11-16 12:30:11,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:11,558 INFO L130 PetriNetUnfolder]: 56/243 cut-off events. [2022-11-16 12:30:11,558 INFO L131 PetriNetUnfolder]: For 232/244 co-relation queries the response was YES. [2022-11-16 12:30:11,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 243 events. 56/243 cut-off events. For 232/244 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 983 event pairs, 17 based on Foata normal form. 6/237 useless extension candidates. Maximal degree in co-relation 502. Up to 57 conditions per place. [2022-11-16 12:30:11,562 INFO L137 encePairwiseOnDemand]: 84/91 looper letters, 12 selfloop transitions, 3 changer transitions 19/97 dead transitions. [2022-11-16 12:30:11,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 97 transitions, 327 flow [2022-11-16 12:30:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:30:11,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:30:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 711 transitions. [2022-11-16 12:30:11,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8681318681318682 [2022-11-16 12:30:11,566 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 711 transitions. [2022-11-16 12:30:11,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 711 transitions. [2022-11-16 12:30:11,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:11,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 711 transitions. [2022-11-16 12:30:11,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:11,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:11,572 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:11,572 INFO L175 Difference]: Start difference. First operand has 95 places, 75 transitions, 195 flow. Second operand 9 states and 711 transitions. [2022-11-16 12:30:11,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 97 transitions, 327 flow [2022-11-16 12:30:11,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 310 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-16 12:30:11,578 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 229 flow [2022-11-16 12:30:11,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=229, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2022-11-16 12:30:11,579 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2022-11-16 12:30:11,580 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 229 flow [2022-11-16 12:30:11,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:11,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:11,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:11,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:30:11,581 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:30:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1769841331, now seen corresponding path program 1 times [2022-11-16 12:30:11,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:11,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718734527] [2022-11-16 12:30:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:11,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:11,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:11,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718734527] [2022-11-16 12:30:11,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718734527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:11,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:11,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:30:11,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195224871] [2022-11-16 12:30:11,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:11,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:30:11,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:30:11,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:30:11,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-11-16 12:30:11,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:11,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:11,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-11-16 12:30:11,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:12,221 INFO L130 PetriNetUnfolder]: 210/614 cut-off events. [2022-11-16 12:30:12,222 INFO L131 PetriNetUnfolder]: For 1549/2045 co-relation queries the response was YES. [2022-11-16 12:30:12,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 614 events. 210/614 cut-off events. For 1549/2045 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3491 event pairs, 32 based on Foata normal form. 17/604 useless extension candidates. Maximal degree in co-relation 1910. Up to 141 conditions per place. [2022-11-16 12:30:12,231 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 25 selfloop transitions, 10 changer transitions 34/125 dead transitions. [2022-11-16 12:30:12,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 125 transitions, 715 flow [2022-11-16 12:30:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:30:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:30:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 694 transitions. [2022-11-16 12:30:12,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8473748473748474 [2022-11-16 12:30:12,234 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 694 transitions. [2022-11-16 12:30:12,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 694 transitions. [2022-11-16 12:30:12,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:12,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 694 transitions. [2022-11-16 12:30:12,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.11111111111111) internal successors, (694), 9 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:12,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:12,240 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:12,241 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 229 flow. Second operand 9 states and 694 transitions. [2022-11-16 12:30:12,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 125 transitions, 715 flow [2022-11-16 12:30:12,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 125 transitions, 682 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-16 12:30:12,256 INFO L231 Difference]: Finished difference. Result has 106 places, 85 transitions, 360 flow [2022-11-16 12:30:12,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=360, PETRI_PLACES=106, PETRI_TRANSITIONS=85} [2022-11-16 12:30:12,257 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 23 predicate places. [2022-11-16 12:30:12,257 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 85 transitions, 360 flow [2022-11-16 12:30:12,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:12,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:12,258 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:12,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:30:12,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:30:12,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1258543704, now seen corresponding path program 1 times [2022-11-16 12:30:12,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:12,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902145447] [2022-11-16 12:30:12,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:12,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:12,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:12,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902145447] [2022-11-16 12:30:12,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902145447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:12,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:12,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:30:12,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135404686] [2022-11-16 12:30:12,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:12,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:30:12,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:30:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:30:12,477 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-16 12:30:12,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 85 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:12,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:12,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-16 12:30:12,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:12,902 INFO L130 PetriNetUnfolder]: 551/1482 cut-off events. [2022-11-16 12:30:12,903 INFO L131 PetriNetUnfolder]: For 2575/2683 co-relation queries the response was YES. [2022-11-16 12:30:12,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3671 conditions, 1482 events. 551/1482 cut-off events. For 2575/2683 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 11624 event pairs, 42 based on Foata normal form. 3/1334 useless extension candidates. Maximal degree in co-relation 3620. Up to 345 conditions per place. [2022-11-16 12:30:12,919 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/117 dead transitions. [2022-11-16 12:30:12,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 117 transitions, 520 flow [2022-11-16 12:30:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:30:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:30:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2022-11-16 12:30:12,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2022-11-16 12:30:12,922 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2022-11-16 12:30:12,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2022-11-16 12:30:12,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:12,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2022-11-16 12:30:12,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 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) [2022-11-16 12:30:12,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:12,932 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:12,932 INFO L175 Difference]: Start difference. First operand has 106 places, 85 transitions, 360 flow. Second operand 10 states and 788 transitions. [2022-11-16 12:30:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 117 transitions, 520 flow [2022-11-16 12:30:12,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 496 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:30:12,946 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 456 flow [2022-11-16 12:30:12,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=456, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2022-11-16 12:30:12,950 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 30 predicate places. [2022-11-16 12:30:12,950 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 456 flow [2022-11-16 12:30:12,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:12,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:12,951 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] [2022-11-16 12:30:12,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:30:12,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:30:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1747789279, now seen corresponding path program 1 times [2022-11-16 12:30:12,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:12,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156793121] [2022-11-16 12:30:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:12,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156793121] [2022-11-16 12:30:13,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156793121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:13,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:13,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:30:13,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795328848] [2022-11-16 12:30:13,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:13,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:30:13,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:13,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:30:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:30:13,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-16 12:30:13,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 456 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:13,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:13,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-16 12:30:13,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:13,670 INFO L130 PetriNetUnfolder]: 442/1255 cut-off events. [2022-11-16 12:30:13,670 INFO L131 PetriNetUnfolder]: For 3245/3543 co-relation queries the response was YES. [2022-11-16 12:30:13,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 1255 events. 442/1255 cut-off events. For 3245/3543 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 10012 event pairs, 8 based on Foata normal form. 116/1277 useless extension candidates. Maximal degree in co-relation 4288. Up to 427 conditions per place. [2022-11-16 12:30:13,684 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 26 selfloop transitions, 32 changer transitions 9/138 dead transitions. [2022-11-16 12:30:13,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 138 transitions, 826 flow [2022-11-16 12:30:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:30:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:30:13,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2022-11-16 12:30:13,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2022-11-16 12:30:13,688 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2022-11-16 12:30:13,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2022-11-16 12:30:13,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:13,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2022-11-16 12:30:13,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:13,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:13,696 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:13,696 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 456 flow. Second operand 13 states and 1025 transitions. [2022-11-16 12:30:13,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 138 transitions, 826 flow [2022-11-16 12:30:13,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 138 transitions, 818 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-16 12:30:13,717 INFO L231 Difference]: Finished difference. Result has 128 places, 120 transitions, 691 flow [2022-11-16 12:30:13,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=691, PETRI_PLACES=128, PETRI_TRANSITIONS=120} [2022-11-16 12:30:13,720 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 45 predicate places. [2022-11-16 12:30:13,720 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 120 transitions, 691 flow [2022-11-16 12:30:13,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:13,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:13,721 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] [2022-11-16 12:30:13,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:30:13,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:30:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash 459827036, now seen corresponding path program 1 times [2022-11-16 12:30:13,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:13,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930735515] [2022-11-16 12:30:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:13,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:13,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:13,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930735515] [2022-11-16 12:30:13,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930735515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:13,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:13,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:30:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471404026] [2022-11-16 12:30:13,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:13,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:30:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:30:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:30:13,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-11-16 12:30:13,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 120 transitions, 691 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:13,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:13,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-11-16 12:30:13,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:14,426 INFO L130 PetriNetUnfolder]: 303/1230 cut-off events. [2022-11-16 12:30:14,427 INFO L131 PetriNetUnfolder]: For 3604/3694 co-relation queries the response was YES. [2022-11-16 12:30:14,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4140 conditions, 1230 events. 303/1230 cut-off events. For 3604/3694 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10624 event pairs, 1 based on Foata normal form. 12/1170 useless extension candidates. Maximal degree in co-relation 4073. Up to 282 conditions per place. [2022-11-16 12:30:14,437 INFO L137 encePairwiseOnDemand]: 80/91 looper letters, 38 selfloop transitions, 20 changer transitions 25/167 dead transitions. [2022-11-16 12:30:14,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 167 transitions, 1247 flow [2022-11-16 12:30:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:30:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:30:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 814 transitions. [2022-11-16 12:30:14,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8131868131868132 [2022-11-16 12:30:14,440 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 814 transitions. [2022-11-16 12:30:14,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 814 transitions. [2022-11-16 12:30:14,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:14,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 814 transitions. [2022-11-16 12:30:14,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:14,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:14,467 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:14,468 INFO L175 Difference]: Start difference. First operand has 128 places, 120 transitions, 691 flow. Second operand 11 states and 814 transitions. [2022-11-16 12:30:14,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 167 transitions, 1247 flow [2022-11-16 12:30:14,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 167 transitions, 1109 flow, removed 56 selfloop flow, removed 9 redundant places. [2022-11-16 12:30:14,532 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 735 flow [2022-11-16 12:30:14,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=735, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2022-11-16 12:30:14,533 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 55 predicate places. [2022-11-16 12:30:14,533 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 735 flow [2022-11-16 12:30:14,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:14,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:14,534 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] [2022-11-16 12:30:14,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:30:14,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:30:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash -58951176, now seen corresponding path program 1 times [2022-11-16 12:30:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:14,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023871746] [2022-11-16 12:30:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:14,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:14,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023871746] [2022-11-16 12:30:14,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023871746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:14,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:14,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:30:14,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005011588] [2022-11-16 12:30:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:14,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:30:14,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:30:14,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:30:14,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2022-11-16 12:30:14,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 735 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:14,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:14,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2022-11-16 12:30:14,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:15,116 INFO L130 PetriNetUnfolder]: 326/1494 cut-off events. [2022-11-16 12:30:15,117 INFO L131 PetriNetUnfolder]: For 2490/2518 co-relation queries the response was YES. [2022-11-16 12:30:15,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4042 conditions, 1494 events. 326/1494 cut-off events. For 2490/2518 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 14707 event pairs, 20 based on Foata normal form. 5/1403 useless extension candidates. Maximal degree in co-relation 3972. Up to 173 conditions per place. [2022-11-16 12:30:15,128 INFO L137 encePairwiseOnDemand]: 81/91 looper letters, 30 selfloop transitions, 18 changer transitions 11/146 dead transitions. [2022-11-16 12:30:15,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 146 transitions, 1043 flow [2022-11-16 12:30:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:30:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:30:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2022-11-16 12:30:15,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8367346938775511 [2022-11-16 12:30:15,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 533 transitions. [2022-11-16 12:30:15,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 533 transitions. [2022-11-16 12:30:15,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:15,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 533 transitions. [2022-11-16 12:30:15,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.14285714285714) internal successors, (533), 7 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,134 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,134 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 735 flow. Second operand 7 states and 533 transitions. [2022-11-16 12:30:15,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 146 transitions, 1043 flow [2022-11-16 12:30:15,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 146 transitions, 981 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-11-16 12:30:15,159 INFO L231 Difference]: Finished difference. Result has 136 places, 125 transitions, 735 flow [2022-11-16 12:30:15,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=735, PETRI_PLACES=136, PETRI_TRANSITIONS=125} [2022-11-16 12:30:15,160 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 53 predicate places. [2022-11-16 12:30:15,160 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 125 transitions, 735 flow [2022-11-16 12:30:15,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:30:15,160 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] [2022-11-16 12:30:15,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:30:15,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 12:30:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:15,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1445720578, now seen corresponding path program 2 times [2022-11-16 12:30:15,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:15,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679766871] [2022-11-16 12:30:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:15,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:15,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:15,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679766871] [2022-11-16 12:30:15,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679766871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:15,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:15,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:30:15,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482893520] [2022-11-16 12:30:15,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:15,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:30:15,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:15,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:30:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:30:15,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-11-16 12:30:15,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 735 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:30:15,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-11-16 12:30:15,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:30:15,838 INFO L130 PetriNetUnfolder]: 396/1289 cut-off events. [2022-11-16 12:30:15,838 INFO L131 PetriNetUnfolder]: For 2538/3027 co-relation queries the response was YES. [2022-11-16 12:30:15,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 1289 events. 396/1289 cut-off events. For 2538/3027 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 12029 event pairs, 1 based on Foata normal form. 146/1306 useless extension candidates. Maximal degree in co-relation 4253. Up to 193 conditions per place. [2022-11-16 12:30:15,846 INFO L137 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 134/134 dead transitions. [2022-11-16 12:30:15,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 134 transitions, 882 flow [2022-11-16 12:30:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:30:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:30:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1164 transitions. [2022-11-16 12:30:15,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8527472527472527 [2022-11-16 12:30:15,850 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1164 transitions. [2022-11-16 12:30:15,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1164 transitions. [2022-11-16 12:30:15,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:30:15,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1164 transitions. [2022-11-16 12:30:15,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.6) internal successors, (1164), 15 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,856 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,856 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 735 flow. Second operand 15 states and 1164 transitions. [2022-11-16 12:30:15,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 134 transitions, 882 flow [2022-11-16 12:30:15,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 134 transitions, 754 flow, removed 39 selfloop flow, removed 16 redundant places. [2022-11-16 12:30:15,874 INFO L231 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2022-11-16 12:30:15,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2022-11-16 12:30:15,875 INFO L288 CegarLoopForPetriNet]: 83 programPoint places, 39 predicate places. [2022-11-16 12:30:15,875 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2022-11-16 12:30:15,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:15,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-16 12:30:15,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-16 12:30:15,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-16 12:30:15,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-16 12:30:15,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:30:15,880 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:15,883 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:30:15,883 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:30:15,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:30:15 BasicIcfg [2022-11-16 12:30:15,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:30:15,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:30:15,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:30:15,889 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:30:15,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:30:09" (3/4) ... [2022-11-16 12:30:15,892 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:30:15,899 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-16 12:30:15,899 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-16 12:30:15,899 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-16 12:30:15,904 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-16 12:30:15,904 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:30:15,904 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:30:15,904 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:30:15,935 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:30:15,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:30:15,936 INFO L158 Benchmark]: Toolchain (without parser) took 8016.25ms. Allocated memory was 127.9MB in the beginning and 199.2MB in the end (delta: 71.3MB). Free memory was 90.7MB in the beginning and 102.6MB in the end (delta: -11.9MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2022-11-16 12:30:15,936 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 127.9MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:30:15,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.71ms. Allocated memory is still 127.9MB. Free memory was 90.4MB in the beginning and 93.3MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:30:15,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.17ms. Allocated memory is still 127.9MB. Free memory was 93.3MB in the beginning and 91.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:30:15,937 INFO L158 Benchmark]: Boogie Preprocessor took 44.73ms. Allocated memory is still 127.9MB. Free memory was 91.2MB in the beginning and 89.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:30:15,937 INFO L158 Benchmark]: RCFGBuilder took 440.76ms. Allocated memory is still 127.9MB. Free memory was 89.6MB in the beginning and 76.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:30:15,938 INFO L158 Benchmark]: TraceAbstraction took 6825.69ms. Allocated memory was 127.9MB in the beginning and 199.2MB in the end (delta: 71.3MB). Free memory was 75.4MB in the beginning and 104.7MB in the end (delta: -29.3MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2022-11-16 12:30:15,938 INFO L158 Benchmark]: Witness Printer took 46.27ms. Allocated memory is still 199.2MB. Free memory was 104.7MB in the beginning and 102.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:30:15,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 127.9MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.71ms. Allocated memory is still 127.9MB. Free memory was 90.4MB in the beginning and 93.3MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.17ms. Allocated memory is still 127.9MB. Free memory was 93.3MB in the beginning and 91.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.73ms. Allocated memory is still 127.9MB. Free memory was 91.2MB in the beginning and 89.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.76ms. Allocated memory is still 127.9MB. Free memory was 89.6MB in the beginning and 76.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6825.69ms. Allocated memory was 127.9MB in the beginning and 199.2MB in the end (delta: 71.3MB). Free memory was 75.4MB in the beginning and 104.7MB in the end (delta: -29.3MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * Witness Printer took 46.27ms. Allocated memory is still 199.2MB. Free memory was 104.7MB in the beginning and 102.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 378 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 378 mSDsluCounter, 456 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 339 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 448 IncrementalHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 117 mSDtfsCounter, 448 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=735occurred in iteration=6, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 471 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 463 ConstructedInterpolants, 0 QuantifiedInterpolants, 1445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:30:15,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f0d0b6b-777f-408a-92da-0439b297ff1b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE