./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R --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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- 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-38b53e6 [2022-11-25 16:58:14,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:58:14,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:58:14,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:58:14,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:58:14,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:58:14,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:58:14,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:58:14,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:58:14,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:58:14,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:58:14,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:58:14,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:58:14,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:58:14,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:58:14,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:58:14,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:58:14,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:58:14,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:58:14,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:58:14,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:58:14,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:58:14,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:58:14,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:58:14,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:58:14,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:58:14,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:58:14,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:58:14,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:58:14,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:58:14,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:58:14,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:58:14,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:58:14,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:58:14,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:58:14,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:58:14,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:58:14,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:58:14,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:58:14,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:58:14,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:58:14,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:58:14,673 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:58:14,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:58:14,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:58:14,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:58:14,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:58:14,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:58:14,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:58:14,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:58:14,681 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:58:14,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:58:14,682 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:58:14,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:58:14,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:58:14,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:58:14,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:58:14,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:58:14,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:58:14,683 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:58:14,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:58:14,684 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:58:14,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:58:14,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:58:14,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:58:14,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:58:14,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:58:14,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:58:14,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:58:14,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:58:14,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:58:14,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:58:14,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:58:14,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:58:14,687 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:58:14,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:58:14,688 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2022-11-25 16:58:15,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:58:15,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:58:15,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:58:15,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:58:15,055 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:58:15,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-11-25 16:58:18,138 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:58:18,484 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:58:18,484 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-11-25 16:58:18,514 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/data/14b70cceb/97b08c0f389b408fa91700e0c35f1a49/FLAGa980e5f39 [2022-11-25 16:58:18,533 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/data/14b70cceb/97b08c0f389b408fa91700e0c35f1a49 [2022-11-25 16:58:18,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:58:18,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:58:18,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:18,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:58:18,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:58:18,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:18" (1/1) ... [2022-11-25 16:58:18,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8b9be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:18, skipping insertion in model container [2022-11-25 16:58:18,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:58:18" (1/1) ... [2022-11-25 16:58:18,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:58:18,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:58:18,872 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-11-25 16:58:19,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,069 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:19,135 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:58:19,149 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-11-25 16:58:19,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 16:58:19,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 16:58:19,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:58:19,338 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:58:19,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19 WrapperNode [2022-11-25 16:58:19,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:58:19,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:58:19,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:58:19,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:58:19,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,435 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2022-11-25 16:58:19,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:58:19,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:58:19,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:58:19,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:58:19,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,489 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:58:19,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:58:19,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:58:19,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:58:19,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (1/1) ... [2022-11-25 16:58:19,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:58:19,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:58:19,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:58:19,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:58:19,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:58:19,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 16:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 16:58:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 16:58:19,615 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 16:58:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 16:58:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 16:58:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 16:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 16:58:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:58:19,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:58:19,619 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:58:19,861 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:58:19,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:58:20,319 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:58:20,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:58:20,487 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:58:20,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:58:20 BoogieIcfgContainer [2022-11-25 16:58:20,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:58:20,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:58:20,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:58:20,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:58:20,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:58:18" (1/3) ... [2022-11-25 16:58:20,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3586ecda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:58:20, skipping insertion in model container [2022-11-25 16:58:20,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:58:19" (2/3) ... [2022-11-25 16:58:20,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3586ecda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:58:20, skipping insertion in model container [2022-11-25 16:58:20,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:58:20" (3/3) ... [2022-11-25 16:58:20,501 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-11-25 16:58:20,510 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:58:20,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:58:20,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 16:58:20,557 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:58:20,646 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 16:58:20,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 253 flow [2022-11-25 16:58:20,743 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-11-25 16:58:20,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:58:20,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-11-25 16:58:20,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 253 flow [2022-11-25 16:58:20,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 116 transitions, 241 flow [2022-11-25 16:58:20,758 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:58:20,773 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 116 transitions, 241 flow [2022-11-25 16:58:20,776 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 116 transitions, 241 flow [2022-11-25 16:58:20,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 116 transitions, 241 flow [2022-11-25 16:58:20,806 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-11-25 16:58:20,807 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:58:20,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-11-25 16:58:20,810 INFO L119 LiptonReduction]: Number of co-enabled transitions 2402 [2022-11-25 16:58:28,246 INFO L134 LiptonReduction]: Checked pairs total: 7192 [2022-11-25 16:58:28,247 INFO L136 LiptonReduction]: Total number of compositions: 104 [2022-11-25 16:58:28,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:58:28,270 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;@629155ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:58:28,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 16:58:28,276 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-11-25 16:58:28,277 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:58:28,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:28,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:28,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash 856885804, now seen corresponding path program 1 times [2022-11-25 16:58:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:28,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265885014] [2022-11-25 16:58:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:28,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:28,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265885014] [2022-11-25 16:58:28,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265885014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:28,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:28,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:58:28,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285449958] [2022-11-25 16:58:28,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:28,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:58:28,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:28,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:58:28,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:58:28,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 223 [2022-11-25 16:58:28,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:28,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:28,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 223 [2022-11-25 16:58:28,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:29,806 INFO L130 PetriNetUnfolder]: 2147/3121 cut-off events. [2022-11-25 16:58:29,807 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-25 16:58:29,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6316 conditions, 3121 events. 2147/3121 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14429 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6305. Up to 2576 conditions per place. [2022-11-25 16:58:29,835 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2022-11-25 16:58:29,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2022-11-25 16:58:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:58:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:58:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2022-11-25 16:58:29,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5082212257100149 [2022-11-25 16:58:29,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2022-11-25 16:58:29,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2022-11-25 16:58:29,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:29,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2022-11-25 16:58:29,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:29,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:29,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:29,867 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 3 states and 340 transitions. [2022-11-25 16:58:29,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2022-11-25 16:58:29,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:58:29,873 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2022-11-25 16:58:29,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-11-25 16:58:29,881 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-11-25 16:58:29,882 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2022-11-25 16:58:29,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:29,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:29,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:29,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:58:29,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:29,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1166393627, now seen corresponding path program 1 times [2022-11-25 16:58:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:29,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914338483] [2022-11-25 16:58:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:29,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:30,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:30,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914338483] [2022-11-25 16:58:30,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914338483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:30,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:30,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:58:30,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686376115] [2022-11-25 16:58:30,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:30,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:58:30,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:30,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:58:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:58:30,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 223 [2022-11-25 16:58:30,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:30,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:30,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 223 [2022-11-25 16:58:30,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:30,668 INFO L130 PetriNetUnfolder]: 1466/2170 cut-off events. [2022-11-25 16:58:30,669 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-11-25 16:58:30,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2170 events. 1466/2170 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9285 event pairs, 698 based on Foata normal form. 90/2258 useless extension candidates. Maximal degree in co-relation 4493. Up to 1189 conditions per place. [2022-11-25 16:58:30,682 INFO L137 encePairwiseOnDemand]: 220/223 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2022-11-25 16:58:30,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2022-11-25 16:58:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:58:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:58:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2022-11-25 16:58:30,685 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5007473841554559 [2022-11-25 16:58:30,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2022-11-25 16:58:30,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2022-11-25 16:58:30,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:30,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2022-11-25 16:58:30,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:30,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:30,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:30,690 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 335 transitions. [2022-11-25 16:58:30,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2022-11-25 16:58:30,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:58:30,692 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 62 flow [2022-11-25 16:58:30,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-11-25 16:58:30,693 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-11-25 16:58:30,693 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2022-11-25 16:58:30,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:30,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:30,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:30,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:58:30,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1799395441, now seen corresponding path program 1 times [2022-11-25 16:58:30,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:30,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661127690] [2022-11-25 16:58:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:30,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:31,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:31,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661127690] [2022-11-25 16:58:31,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661127690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:31,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:31,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:58:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212992631] [2022-11-25 16:58:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:31,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:58:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:58:31,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:58:31,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2022-11-25 16:58:31,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:31,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:31,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2022-11-25 16:58:31,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:32,464 INFO L130 PetriNetUnfolder]: 1661/2455 cut-off events. [2022-11-25 16:58:32,465 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-11-25 16:58:32,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2455 events. 1661/2455 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10950 event pairs, 259 based on Foata normal form. 30/2483 useless extension candidates. Maximal degree in co-relation 5239. Up to 1583 conditions per place. [2022-11-25 16:58:32,477 INFO L137 encePairwiseOnDemand]: 211/223 looper letters, 46 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2022-11-25 16:58:32,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 244 flow [2022-11-25 16:58:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:58:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:58:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 628 transitions. [2022-11-25 16:58:32,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4693572496263079 [2022-11-25 16:58:32,480 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 628 transitions. [2022-11-25 16:58:32,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 628 transitions. [2022-11-25 16:58:32,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:32,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 628 transitions. [2022-11-25 16:58:32,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:32,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:32,487 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:32,487 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 6 states and 628 transitions. [2022-11-25 16:58:32,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 244 flow [2022-11-25 16:58:32,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:58:32,493 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 118 flow [2022-11-25 16:58:32,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2022-11-25 16:58:32,494 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-11-25 16:58:32,494 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 118 flow [2022-11-25 16:58:32,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:32,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:32,495 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:32,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:58:32,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1802281231, now seen corresponding path program 2 times [2022-11-25 16:58:32,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:32,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721952876] [2022-11-25 16:58:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:32,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:33,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:33,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721952876] [2022-11-25 16:58:33,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721952876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:33,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:33,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:58:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144055400] [2022-11-25 16:58:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:33,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:58:33,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:58:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:58:33,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 223 [2022-11-25 16:58:33,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:33,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:33,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 223 [2022-11-25 16:58:33,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:34,412 INFO L130 PetriNetUnfolder]: 2257/3330 cut-off events. [2022-11-25 16:58:34,413 INFO L131 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2022-11-25 16:58:34,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9469 conditions, 3330 events. 2257/3330 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15834 event pairs, 1202 based on Foata normal form. 30/3359 useless extension candidates. Maximal degree in co-relation 9457. Up to 2653 conditions per place. [2022-11-25 16:58:34,435 INFO L137 encePairwiseOnDemand]: 212/223 looper letters, 42 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2022-11-25 16:58:34,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 63 transitions, 359 flow [2022-11-25 16:58:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:58:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:58:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 514 transitions. [2022-11-25 16:58:34,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4609865470852018 [2022-11-25 16:58:34,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 514 transitions. [2022-11-25 16:58:34,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 514 transitions. [2022-11-25 16:58:34,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:34,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 514 transitions. [2022-11-25 16:58:34,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:34,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:34,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:34,444 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 118 flow. Second operand 5 states and 514 transitions. [2022-11-25 16:58:34,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 63 transitions, 359 flow [2022-11-25 16:58:34,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 335 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 16:58:34,450 INFO L231 Difference]: Finished difference. Result has 40 places, 49 transitions, 262 flow [2022-11-25 16:58:34,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=40, PETRI_TRANSITIONS=49} [2022-11-25 16:58:34,453 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-11-25 16:58:34,454 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 49 transitions, 262 flow [2022-11-25 16:58:34,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:34,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:34,455 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:34,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:58:34,455 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:34,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash -36186096, now seen corresponding path program 1 times [2022-11-25 16:58:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:34,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934267045] [2022-11-25 16:58:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:34,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:34,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934267045] [2022-11-25 16:58:34,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934267045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:34,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:34,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:58:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131372212] [2022-11-25 16:58:34,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:34,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:58:34,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:58:34,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:58:34,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 223 [2022-11-25 16:58:34,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 49 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:34,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:34,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 223 [2022-11-25 16:58:34,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:35,419 INFO L130 PetriNetUnfolder]: 1693/2653 cut-off events. [2022-11-25 16:58:35,419 INFO L131 PetriNetUnfolder]: For 3058/3058 co-relation queries the response was YES. [2022-11-25 16:58:35,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8774 conditions, 2653 events. 1693/2653 cut-off events. For 3058/3058 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13428 event pairs, 230 based on Foata normal form. 290/2941 useless extension candidates. Maximal degree in co-relation 8760. Up to 1218 conditions per place. [2022-11-25 16:58:35,434 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 85 selfloop transitions, 4 changer transitions 75/165 dead transitions. [2022-11-25 16:58:35,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 165 transitions, 1246 flow [2022-11-25 16:58:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:58:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:58:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2022-11-25 16:58:35,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49506726457399103 [2022-11-25 16:58:35,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2022-11-25 16:58:35,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2022-11-25 16:58:35,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:35,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2022-11-25 16:58:35,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:35,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:35,446 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:35,446 INFO L175 Difference]: Start difference. First operand has 40 places, 49 transitions, 262 flow. Second operand 5 states and 552 transitions. [2022-11-25 16:58:35,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 165 transitions, 1246 flow [2022-11-25 16:58:35,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 165 transitions, 1245 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:58:35,452 INFO L231 Difference]: Finished difference. Result has 46 places, 52 transitions, 301 flow [2022-11-25 16:58:35,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=46, PETRI_TRANSITIONS=52} [2022-11-25 16:58:35,453 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-11-25 16:58:35,453 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 52 transitions, 301 flow [2022-11-25 16:58:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:35,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:35,454 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:35,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:58:35,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:35,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -111670190, now seen corresponding path program 1 times [2022-11-25 16:58:35,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:35,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811914332] [2022-11-25 16:58:35,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:35,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:36,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:36,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811914332] [2022-11-25 16:58:36,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811914332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:36,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:36,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:58:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787173882] [2022-11-25 16:58:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:36,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:58:36,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:36,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:58:36,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:58:36,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2022-11-25 16:58:36,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:36,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:36,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2022-11-25 16:58:36,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:37,799 INFO L130 PetriNetUnfolder]: 1791/2930 cut-off events. [2022-11-25 16:58:37,799 INFO L131 PetriNetUnfolder]: For 3693/3693 co-relation queries the response was YES. [2022-11-25 16:58:37,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11313 conditions, 2930 events. 1791/2930 cut-off events. For 3693/3693 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16070 event pairs, 355 based on Foata normal form. 60/2988 useless extension candidates. Maximal degree in co-relation 11295. Up to 1474 conditions per place. [2022-11-25 16:58:37,819 INFO L137 encePairwiseOnDemand]: 211/223 looper letters, 82 selfloop transitions, 21 changer transitions 28/132 dead transitions. [2022-11-25 16:58:37,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 132 transitions, 1009 flow [2022-11-25 16:58:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:58:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:58:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 753 transitions. [2022-11-25 16:58:37,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4823830877642537 [2022-11-25 16:58:37,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 753 transitions. [2022-11-25 16:58:37,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 753 transitions. [2022-11-25 16:58:37,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:37,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 753 transitions. [2022-11-25 16:58:37,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:37,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:37,828 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:37,828 INFO L175 Difference]: Start difference. First operand has 46 places, 52 transitions, 301 flow. Second operand 7 states and 753 transitions. [2022-11-25 16:58:37,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 132 transitions, 1009 flow [2022-11-25 16:58:37,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 132 transitions, 979 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-25 16:58:37,843 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 411 flow [2022-11-25 16:58:37,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2022-11-25 16:58:37,844 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-11-25 16:58:37,845 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 411 flow [2022-11-25 16:58:37,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:37,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:37,846 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:37,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:58:37,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:37,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2096487533, now seen corresponding path program 1 times [2022-11-25 16:58:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:37,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260600921] [2022-11-25 16:58:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:38,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:38,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260600921] [2022-11-25 16:58:38,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260600921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:38,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:38,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:58:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258219304] [2022-11-25 16:58:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:38,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:58:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:38,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:58:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:58:38,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 223 [2022-11-25 16:58:38,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:38,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:38,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 223 [2022-11-25 16:58:38,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:38,739 INFO L130 PetriNetUnfolder]: 1177/2062 cut-off events. [2022-11-25 16:58:38,739 INFO L131 PetriNetUnfolder]: For 5494/5494 co-relation queries the response was YES. [2022-11-25 16:58:38,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8762 conditions, 2062 events. 1177/2062 cut-off events. For 5494/5494 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11511 event pairs, 221 based on Foata normal form. 222/2282 useless extension candidates. Maximal degree in co-relation 8741. Up to 880 conditions per place. [2022-11-25 16:58:38,754 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 91 selfloop transitions, 7 changer transitions 72/171 dead transitions. [2022-11-25 16:58:38,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 171 transitions, 1638 flow [2022-11-25 16:58:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:58:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:58:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 664 transitions. [2022-11-25 16:58:38,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4962630792227205 [2022-11-25 16:58:38,758 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 664 transitions. [2022-11-25 16:58:38,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 664 transitions. [2022-11-25 16:58:38,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:38,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 664 transitions. [2022-11-25 16:58:38,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.66666666666667) internal successors, (664), 6 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:38,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:38,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:38,764 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 411 flow. Second operand 6 states and 664 transitions. [2022-11-25 16:58:38,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 171 transitions, 1638 flow [2022-11-25 16:58:38,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 171 transitions, 1591 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 16:58:38,776 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 414 flow [2022-11-25 16:58:38,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2022-11-25 16:58:38,777 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2022-11-25 16:58:38,777 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 414 flow [2022-11-25 16:58:38,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:38,778 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:38,781 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:38,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:58:38,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:38,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash -166336222, now seen corresponding path program 1 times [2022-11-25 16:58:38,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:38,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568155824] [2022-11-25 16:58:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:38,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:40,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:40,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568155824] [2022-11-25 16:58:40,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568155824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:40,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:40,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:58:40,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580474310] [2022-11-25 16:58:40,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:40,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:58:40,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:40,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:58:40,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:58:40,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 223 [2022-11-25 16:58:40,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 414 flow. Second operand has 8 states, 8 states have (on average 96.25) internal successors, (770), 8 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:40,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:40,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 223 [2022-11-25 16:58:40,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:41,096 INFO L130 PetriNetUnfolder]: 894/1640 cut-off events. [2022-11-25 16:58:41,096 INFO L131 PetriNetUnfolder]: For 4548/4548 co-relation queries the response was YES. [2022-11-25 16:58:41,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 1640 events. 894/1640 cut-off events. For 4548/4548 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8982 event pairs, 146 based on Foata normal form. 13/1651 useless extension candidates. Maximal degree in co-relation 7553. Up to 750 conditions per place. [2022-11-25 16:58:41,106 INFO L137 encePairwiseOnDemand]: 212/223 looper letters, 52 selfloop transitions, 18 changer transitions 36/107 dead transitions. [2022-11-25 16:58:41,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 107 transitions, 1020 flow [2022-11-25 16:58:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:58:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:58:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 730 transitions. [2022-11-25 16:58:41,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4676489429852659 [2022-11-25 16:58:41,109 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 730 transitions. [2022-11-25 16:58:41,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 730 transitions. [2022-11-25 16:58:41,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:41,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 730 transitions. [2022-11-25 16:58:41,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.28571428571429) internal successors, (730), 7 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,115 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,115 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 414 flow. Second operand 7 states and 730 transitions. [2022-11-25 16:58:41,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 107 transitions, 1020 flow [2022-11-25 16:58:41,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 107 transitions, 914 flow, removed 40 selfloop flow, removed 4 redundant places. [2022-11-25 16:58:41,131 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 399 flow [2022-11-25 16:58:41,132 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2022-11-25 16:58:41,132 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2022-11-25 16:58:41,132 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 399 flow [2022-11-25 16:58:41,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.25) internal successors, (770), 8 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:41,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:58:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:58:41,134 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1164295366, now seen corresponding path program 2 times [2022-11-25 16:58:41,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:41,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668444282] [2022-11-25 16:58:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:41,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:41,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668444282] [2022-11-25 16:58:41,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668444282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:41,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:41,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 16:58:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447130635] [2022-11-25 16:58:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:41,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:58:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:58:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:58:41,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 223 [2022-11-25 16:58:41,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:41,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 223 [2022-11-25 16:58:41,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:41,732 INFO L130 PetriNetUnfolder]: 260/509 cut-off events. [2022-11-25 16:58:41,732 INFO L131 PetriNetUnfolder]: For 1629/1629 co-relation queries the response was YES. [2022-11-25 16:58:41,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2405 conditions, 509 events. 260/509 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2160 event pairs, 48 based on Foata normal form. 22/529 useless extension candidates. Maximal degree in co-relation 2381. Up to 236 conditions per place. [2022-11-25 16:58:41,736 INFO L137 encePairwiseOnDemand]: 217/223 looper letters, 68 selfloop transitions, 10 changer transitions 13/92 dead transitions. [2022-11-25 16:58:41,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 92 transitions, 963 flow [2022-11-25 16:58:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:58:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:58:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 736 transitions. [2022-11-25 16:58:41,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4714926329276105 [2022-11-25 16:58:41,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 736 transitions. [2022-11-25 16:58:41,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 736 transitions. [2022-11-25 16:58:41,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:41,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 736 transitions. [2022-11-25 16:58:41,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,747 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 399 flow. Second operand 7 states and 736 transitions. [2022-11-25 16:58:41,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 92 transitions, 963 flow [2022-11-25 16:58:41,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 763 flow, removed 45 selfloop flow, removed 9 redundant places. [2022-11-25 16:58:41,754 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 332 flow [2022-11-25 16:58:41,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2022-11-25 16:58:41,755 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2022-11-25 16:58:41,755 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 332 flow [2022-11-25 16:58:41,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:41,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:41,758 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] [2022-11-25 16:58:41,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:58:41,760 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash -749377502, now seen corresponding path program 1 times [2022-11-25 16:58:41,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:41,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744880352] [2022-11-25 16:58:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:41,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:42,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744880352] [2022-11-25 16:58:42,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744880352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:42,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:42,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:58:42,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588731249] [2022-11-25 16:58:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:42,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:58:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:42,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:58:42,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:58:42,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 223 [2022-11-25 16:58:42,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:42,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:42,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 223 [2022-11-25 16:58:42,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:42,414 INFO L130 PetriNetUnfolder]: 337/624 cut-off events. [2022-11-25 16:58:42,414 INFO L131 PetriNetUnfolder]: For 1370/1370 co-relation queries the response was YES. [2022-11-25 16:58:42,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2606 conditions, 624 events. 337/624 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2750 event pairs, 29 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 2583. Up to 386 conditions per place. [2022-11-25 16:58:42,417 INFO L137 encePairwiseOnDemand]: 220/223 looper letters, 37 selfloop transitions, 1 changer transitions 42/80 dead transitions. [2022-11-25 16:58:42,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 719 flow [2022-11-25 16:58:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:58:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:58:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 435 transitions. [2022-11-25 16:58:42,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4876681614349776 [2022-11-25 16:58:42,420 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 435 transitions. [2022-11-25 16:58:42,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 435 transitions. [2022-11-25 16:58:42,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:42,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 435 transitions. [2022-11-25 16:58:42,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:42,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:42,424 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:42,425 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 332 flow. Second operand 4 states and 435 transitions. [2022-11-25 16:58:42,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 719 flow [2022-11-25 16:58:42,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 647 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-11-25 16:58:42,430 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 178 flow [2022-11-25 16:58:42,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2022-11-25 16:58:42,431 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-11-25 16:58:42,431 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 178 flow [2022-11-25 16:58:42,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:42,432 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:42,432 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] [2022-11-25 16:58:42,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 16:58:42,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:42,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:42,433 INFO L85 PathProgramCache]: Analyzing trace with hash -197029744, now seen corresponding path program 2 times [2022-11-25 16:58:42,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:42,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912971894] [2022-11-25 16:58:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:42,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:44,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:44,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912971894] [2022-11-25 16:58:44,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912971894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:44,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:44,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:58:44,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572497591] [2022-11-25 16:58:44,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:44,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:58:44,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:58:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:58:44,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2022-11-25 16:58:44,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 97.875) internal successors, (783), 8 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:44,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:44,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2022-11-25 16:58:44,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:45,153 INFO L130 PetriNetUnfolder]: 191/385 cut-off events. [2022-11-25 16:58:45,154 INFO L131 PetriNetUnfolder]: For 667/669 co-relation queries the response was YES. [2022-11-25 16:58:45,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1575 conditions, 385 events. 191/385 cut-off events. For 667/669 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1481 event pairs, 59 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 1558. Up to 271 conditions per place. [2022-11-25 16:58:45,156 INFO L137 encePairwiseOnDemand]: 213/223 looper letters, 35 selfloop transitions, 5 changer transitions 15/56 dead transitions. [2022-11-25 16:58:45,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 437 flow [2022-11-25 16:58:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:58:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 16:58:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 610 transitions. [2022-11-25 16:58:45,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45590433482810166 [2022-11-25 16:58:45,159 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 610 transitions. [2022-11-25 16:58:45,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 610 transitions. [2022-11-25 16:58:45,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:45,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 610 transitions. [2022-11-25 16:58:45,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:45,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:45,165 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 223.0) internal successors, (1561), 7 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:45,165 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 178 flow. Second operand 6 states and 610 transitions. [2022-11-25 16:58:45,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 437 flow [2022-11-25 16:58:45,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 388 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-25 16:58:45,168 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 193 flow [2022-11-25 16:58:45,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2022-11-25 16:58:45,169 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-11-25 16:58:45,169 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 193 flow [2022-11-25 16:58:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.875) internal successors, (783), 8 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:45,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:58:45,170 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] [2022-11-25 16:58:45,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 16:58:45,171 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 16:58:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:58:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -180432690, now seen corresponding path program 3 times [2022-11-25 16:58:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:58:45,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045905095] [2022-11-25 16:58:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:58:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:58:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:58:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:58:47,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:58:47,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045905095] [2022-11-25 16:58:47,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045905095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:58:47,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:58:47,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 16:58:47,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615680006] [2022-11-25 16:58:47,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:58:47,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 16:58:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:58:47,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 16:58:47,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:58:47,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 223 [2022-11-25 16:58:47,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 193 flow. Second operand has 11 states, 11 states have (on average 98.0909090909091) internal successors, (1079), 11 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:47,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:58:47,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 223 [2022-11-25 16:58:47,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:58:48,358 INFO L130 PetriNetUnfolder]: 211/462 cut-off events. [2022-11-25 16:58:48,359 INFO L131 PetriNetUnfolder]: For 884/888 co-relation queries the response was YES. [2022-11-25 16:58:48,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 462 events. 211/462 cut-off events. For 884/888 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2132 event pairs, 31 based on Foata normal form. 3/464 useless extension candidates. Maximal degree in co-relation 1919. Up to 182 conditions per place. [2022-11-25 16:58:48,361 INFO L137 encePairwiseOnDemand]: 216/223 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-11-25 16:58:48,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 624 flow [2022-11-25 16:58:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 16:58:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 16:58:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 826 transitions. [2022-11-25 16:58:48,364 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46300448430493274 [2022-11-25 16:58:48,365 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 826 transitions. [2022-11-25 16:58:48,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 826 transitions. [2022-11-25 16:58:48,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:58:48,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 826 transitions. [2022-11-25 16:58:48,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 103.25) internal successors, (826), 8 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:48,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 223.0) internal successors, (2007), 9 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:48,371 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 223.0) internal successors, (2007), 9 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:48,372 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 193 flow. Second operand 8 states and 826 transitions. [2022-11-25 16:58:48,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 624 flow [2022-11-25 16:58:48,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:58:48,376 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2022-11-25 16:58:48,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2022-11-25 16:58:48,377 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2022-11-25 16:58:48,377 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2022-11-25 16:58:48,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 98.0909090909091) internal successors, (1079), 11 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:58:48,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-25 16:58:48,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-25 16:58:48,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-25 16:58:48,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-25 16:58:48,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-11-25 16:58:48,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-25 16:58:48,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:58:48,382 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 16:58:48,387 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 16:58:48,387 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:58:48,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:58:48 BasicIcfg [2022-11-25 16:58:48,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:58:48,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:58:48,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:58:48,391 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:58:48,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:58:20" (3/4) ... [2022-11-25 16:58:48,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 16:58:48,399 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 16:58:48,399 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 16:58:48,399 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 16:58:48,404 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2022-11-25 16:58:48,404 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-25 16:58:48,404 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 16:58:48,404 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 16:58:48,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 16:58:48,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:58:48,450 INFO L158 Benchmark]: Toolchain (without parser) took 29911.87ms. Allocated memory was 169.9MB in the beginning and 597.7MB in the end (delta: 427.8MB). Free memory was 134.0MB in the beginning and 393.3MB in the end (delta: -259.3MB). Peak memory consumption was 169.5MB. Max. memory is 16.1GB. [2022-11-25 16:58:48,450 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 123.7MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:58:48,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 796.55ms. Allocated memory is still 169.9MB. Free memory was 134.0MB in the beginning and 115.6MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 16:58:48,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.25ms. Allocated memory is still 169.9MB. Free memory was 115.6MB in the beginning and 112.1MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:58:48,451 INFO L158 Benchmark]: Boogie Preprocessor took 57.63ms. Allocated memory is still 169.9MB. Free memory was 112.1MB in the beginning and 109.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 16:58:48,452 INFO L158 Benchmark]: RCFGBuilder took 994.94ms. Allocated memory is still 169.9MB. Free memory was 109.3MB in the beginning and 51.3MB in the end (delta: 58.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-25 16:58:48,452 INFO L158 Benchmark]: TraceAbstraction took 27897.02ms. Allocated memory was 169.9MB in the beginning and 597.7MB in the end (delta: 427.8MB). Free memory was 50.6MB in the beginning and 396.4MB in the end (delta: -345.9MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2022-11-25 16:58:48,452 INFO L158 Benchmark]: Witness Printer took 58.58ms. Allocated memory is still 597.7MB. Free memory was 396.4MB in the beginning and 393.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 16:58:48,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 123.7MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 796.55ms. Allocated memory is still 169.9MB. Free memory was 134.0MB in the beginning and 115.6MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.25ms. Allocated memory is still 169.9MB. Free memory was 115.6MB in the beginning and 112.1MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.63ms. Allocated memory is still 169.9MB. Free memory was 112.1MB in the beginning and 109.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 994.94ms. Allocated memory is still 169.9MB. Free memory was 109.3MB in the beginning and 51.3MB in the end (delta: 58.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 27897.02ms. Allocated memory was 169.9MB in the beginning and 597.7MB in the end (delta: 427.8MB). Free memory was 50.6MB in the beginning and 396.4MB in the end (delta: -345.9MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. * Witness Printer took 58.58ms. Allocated memory is still 597.7MB. Free memory was 396.4MB in the beginning and 393.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5s, 124 PlacesBefore, 36 PlacesAfterwards, 116 TransitionsBefore, 27 TransitionsAfterwards, 2402 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 104 TotalNumberOfCompositions, 7192 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3094, independent: 2872, independent conditional: 0, independent unconditional: 2872, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1799, independent: 1708, independent conditional: 0, independent unconditional: 1708, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1799, independent: 1647, independent conditional: 0, independent unconditional: 1647, dependent: 152, dependent conditional: 0, dependent unconditional: 152, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 152, independent: 61, independent conditional: 0, independent unconditional: 61, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1341, independent: 107, independent conditional: 0, independent unconditional: 107, dependent: 1234, dependent conditional: 0, dependent unconditional: 1234, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3094, independent: 1164, independent conditional: 0, independent unconditional: 1164, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 1799, unknown conditional: 0, unknown unconditional: 1799] , Statistics on independence cache: Total cache size (in pairs): 189, Positive cache size: 148, Positive conditional cache size: 0, Positive unconditional cache size: 148, Negative cache size: 41, Negative conditional cache size: 0, Negative unconditional cache size: 41, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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, 149 locations, 6 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: 27.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 598 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 517 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 200 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1938 IncrementalHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 28 mSDtfsCounter, 1938 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=7, InterpolantAutomatonStates: 67, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 1721 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 16:58:48,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b27f78-e4c9-479d-ac6e-7942ee86f73d/bin/uautomizer-ZsLfNo2U6R/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