./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.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_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/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_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/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_4deb5260-e2f9-4d14-b950-ebf9450089c4/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 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b --- 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 15:51:21,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:51:21,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:51:21,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:51:21,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:51:21,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:51:21,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:51:21,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:51:21,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:51:21,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:51:21,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:51:21,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:51:21,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:51:21,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:51:21,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:51:21,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:51:21,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:51:21,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:51:21,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:51:21,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:51:21,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:51:21,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:51:21,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:51:21,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:51:21,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:51:21,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:51:21,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:51:21,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:51:21,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:51:21,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:51:21,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:51:21,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:51:21,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:51:21,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:51:21,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:51:21,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:51:21,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:51:21,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:51:21,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:51:21,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:51:21,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:51:21,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:51:21,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:51:21,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:51:21,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:51:21,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:51:21,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:51:21,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:51:21,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:51:21,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:51:21,730 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:51:21,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:51:21,731 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:51:21,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:51:21,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:51:21,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:51:21,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:51:21,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:51:21,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:51:21,733 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:51:21,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:51:21,733 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:51:21,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:51:21,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:51:21,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:51:21,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:51:21,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:51:21,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:51:21,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:51:21,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:51:21,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:51:21,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:51:21,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:51:21,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:51:21,737 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:51:21,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:51:21,738 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_4deb5260-e2f9-4d14-b950-ebf9450089c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4633300b13c3e317f8d3cd1cc05f3f76ba271ffedabaa8599cd9617354fa2b7b [2022-11-25 15:51:22,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:51:22,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:51:22,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:51:22,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:51:22,059 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:51:22,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 15:51:25,446 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:51:25,825 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:51:25,826 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 15:51:25,842 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/data/659463db8/57408a0dbec847e8bc97f6138188dfa2/FLAG50183f82d [2022-11-25 15:51:25,860 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/data/659463db8/57408a0dbec847e8bc97f6138188dfa2 [2022-11-25 15:51:25,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:51:25,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:51:25,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:25,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:51:25,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:51:25,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:25" (1/1) ... [2022-11-25 15:51:25,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be1ce61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:25, skipping insertion in model container [2022-11-25 15:51:25,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:25" (1/1) ... [2022-11-25 15:51:25,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:51:25,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:51:26,206 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_4deb5260-e2f9-4d14-b950-ebf9450089c4/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 15:51:26,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,539 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:26,558 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:51:26,576 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_4deb5260-e2f9-4d14-b950-ebf9450089c4/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-25 15:51:26,629 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,630 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,631 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,632 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,634 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,635 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,639 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,640 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,641 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,645 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,646 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:51:26,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:51:26,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:26,706 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:51:26,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26 WrapperNode [2022-11-25 15:51:26,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:26,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:26,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:51:26,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:51:26,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,774 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-11-25 15:51:26,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:26,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:51:26,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:51:26,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:51:26,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,817 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:51:26,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:51:26,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:51:26,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:51:26,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (1/1) ... [2022-11-25 15:51:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:51:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:51:26,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:51:26,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:51:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:51:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:51:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:51:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:51:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:51:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 15:51:26,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 15:51:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 15:51:26,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 15:51:26,958 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 15:51:26,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 15:51:26,959 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-25 15:51:26,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-25 15:51:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:51:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:51:26,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:51:26,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:51:26,962 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 15:51:27,233 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:51:27,236 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:51:27,503 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:51:27,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:51:27,512 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:51:27,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:27 BoogieIcfgContainer [2022-11-25 15:51:27,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:51:27,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:51:27,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:51:27,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:51:27,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:51:25" (1/3) ... [2022-11-25 15:51:27,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a35c336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:51:27, skipping insertion in model container [2022-11-25 15:51:27,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:26" (2/3) ... [2022-11-25 15:51:27,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a35c336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:51:27, skipping insertion in model container [2022-11-25 15:51:27,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:27" (3/3) ... [2022-11-25 15:51:27,527 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-25 15:51:27,539 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:51:27,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:51:27,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:51:27,552 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:51:27,655 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 15:51:27,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 106 transitions, 232 flow [2022-11-25 15:51:27,777 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2022-11-25 15:51:27,777 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:51:27,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-11-25 15:51:27,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 106 transitions, 232 flow [2022-11-25 15:51:27,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 86 transitions, 184 flow [2022-11-25 15:51:27,795 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:51:27,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 86 transitions, 184 flow [2022-11-25 15:51:27,820 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 86 transitions, 184 flow [2022-11-25 15:51:27,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 86 transitions, 184 flow [2022-11-25 15:51:27,938 INFO L130 PetriNetUnfolder]: 1/86 cut-off events. [2022-11-25 15:51:27,945 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:51:27,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 1/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 44 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-25 15:51:27,950 INFO L119 LiptonReduction]: Number of co-enabled transitions 1630 [2022-11-25 15:51:31,463 INFO L134 LiptonReduction]: Checked pairs total: 2688 [2022-11-25 15:51:31,465 INFO L136 LiptonReduction]: Total number of compositions: 72 [2022-11-25 15:51:31,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:51:31,498 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;@640fe64b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:51:31,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 15:51:31,506 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-11-25 15:51:31,506 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:51:31,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:31,507 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:31,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash 314775461, now seen corresponding path program 1 times [2022-11-25 15:51:31,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:31,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811397491] [2022-11-25 15:51:31,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:31,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:32,298 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 15:51:32,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:32,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811397491] [2022-11-25 15:51:32,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811397491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:32,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:32,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:51:32,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818529234] [2022-11-25 15:51:32,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:32,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:51:32,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:32,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:32,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-11-25 15:51:32,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 15:51:32,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:32,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-11-25 15:51:32,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:32,941 INFO L130 PetriNetUnfolder]: 1747/2539 cut-off events. [2022-11-25 15:51:32,941 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-25 15:51:32,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 2539 events. 1747/2539 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11289 event pairs, 696 based on Foata normal form. 75/2614 useless extension candidates. Maximal degree in co-relation 5238. Up to 1811 conditions per place. [2022-11-25 15:51:32,970 INFO L137 encePairwiseOnDemand]: 170/178 looper letters, 30 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2022-11-25 15:51:32,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2022-11-25 15:51:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:51:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2022-11-25 15:51:32,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5786516853932584 [2022-11-25 15:51:32,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2022-11-25 15:51:32,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2022-11-25 15:51:33,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:33,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2022-11-25 15:51:33,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 15:51:33,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 15:51:33,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 15:51:33,027 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 309 transitions. [2022-11-25 15:51:33,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2022-11-25 15:51:33,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 15:51:33,039 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2022-11-25 15:51:33,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-11-25 15:51:33,046 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2022-11-25 15:51:33,046 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2022-11-25 15:51:33,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 15:51:33,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:33,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:33,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:51:33,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1168103743, now seen corresponding path program 1 times [2022-11-25 15:51:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:33,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142037812] [2022-11-25 15:51:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:33,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:33,422 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 15:51:33,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:33,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142037812] [2022-11-25 15:51:33,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142037812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:33,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:33,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:51:33,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018779603] [2022-11-25 15:51:33,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:33,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:51:33,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:33,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:51:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:51:33,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-11-25 15:51:33,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 15:51:33,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:33,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-11-25 15:51:33,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:33,892 INFO L130 PetriNetUnfolder]: 1647/2406 cut-off events. [2022-11-25 15:51:33,892 INFO L131 PetriNetUnfolder]: For 395/395 co-relation queries the response was YES. [2022-11-25 15:51:33,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6105 conditions, 2406 events. 1647/2406 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10574 event pairs, 249 based on Foata normal form. 33/2439 useless extension candidates. Maximal degree in co-relation 6094. Up to 1391 conditions per place. [2022-11-25 15:51:33,916 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2022-11-25 15:51:33,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 228 flow [2022-11-25 15:51:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:51:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:51:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2022-11-25 15:51:33,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5646067415730337 [2022-11-25 15:51:33,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2022-11-25 15:51:33,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2022-11-25 15:51:33,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:33,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2022-11-25 15:51:33,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 15:51:33,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 15:51:33,929 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 15:51:33,929 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 4 states and 402 transitions. [2022-11-25 15:51:33,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 228 flow [2022-11-25 15:51:33,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:51:33,951 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 113 flow [2022-11-25 15:51:33,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2022-11-25 15:51:33,952 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2022-11-25 15:51:33,952 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 113 flow [2022-11-25 15:51:33,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 15:51:33,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:33,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:33,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:51:33,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1168103774, now seen corresponding path program 1 times [2022-11-25 15:51:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:33,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813880151] [2022-11-25 15:51:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:34,174 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 15:51:34,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:34,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813880151] [2022-11-25 15:51:34,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813880151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:34,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:34,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:51:34,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515280425] [2022-11-25 15:51:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:34,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:51:34,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:34,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:51:34,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:51:34,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-11-25 15:51:34,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 15:51:34,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:34,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-11-25 15:51:34,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:34,580 INFO L130 PetriNetUnfolder]: 1560/2283 cut-off events. [2022-11-25 15:51:34,581 INFO L131 PetriNetUnfolder]: For 1275/1275 co-relation queries the response was YES. [2022-11-25 15:51:34,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6306 conditions, 2283 events. 1560/2283 cut-off events. For 1275/1275 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9681 event pairs, 231 based on Foata normal form. 12/2295 useless extension candidates. Maximal degree in co-relation 6292. Up to 1302 conditions per place. [2022-11-25 15:51:34,602 INFO L137 encePairwiseOnDemand]: 172/178 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2022-11-25 15:51:34,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 261 flow [2022-11-25 15:51:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:51:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:51:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2022-11-25 15:51:34,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5660112359550562 [2022-11-25 15:51:34,606 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2022-11-25 15:51:34,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2022-11-25 15:51:34,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:34,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2022-11-25 15:51:34,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 15:51:34,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 15:51:34,611 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 15:51:34,611 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 113 flow. Second operand 4 states and 403 transitions. [2022-11-25 15:51:34,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 261 flow [2022-11-25 15:51:34,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:51:34,619 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 137 flow [2022-11-25 15:51:34,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2022-11-25 15:51:34,621 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2022-11-25 15:51:34,622 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 137 flow [2022-11-25 15:51:34,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 15:51:34,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:34,623 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:34,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:51:34,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:34,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1882872982, now seen corresponding path program 1 times [2022-11-25 15:51:34,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:34,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223714554] [2022-11-25 15:51:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:34,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:34,841 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 15:51:34,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:34,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223714554] [2022-11-25 15:51:34,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223714554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:34,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:34,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304123942] [2022-11-25 15:51:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:34,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:51:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:51:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:51:34,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 178 [2022-11-25 15:51:34,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 15:51:34,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:34,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 178 [2022-11-25 15:51:34,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:35,368 INFO L130 PetriNetUnfolder]: 2039/3020 cut-off events. [2022-11-25 15:51:35,368 INFO L131 PetriNetUnfolder]: For 3054/3054 co-relation queries the response was YES. [2022-11-25 15:51:35,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 3020 events. 2039/3020 cut-off events. For 3054/3054 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14929 event pairs, 257 based on Foata normal form. 90/3110 useless extension candidates. Maximal degree in co-relation 8674. Up to 1280 conditions per place. [2022-11-25 15:51:35,387 INFO L137 encePairwiseOnDemand]: 170/178 looper letters, 47 selfloop transitions, 9 changer transitions 16/72 dead transitions. [2022-11-25 15:51:35,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 72 transitions, 482 flow [2022-11-25 15:51:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:51:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:51:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2022-11-25 15:51:35,391 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5573033707865168 [2022-11-25 15:51:35,391 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2022-11-25 15:51:35,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2022-11-25 15:51:35,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:35,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2022-11-25 15:51:35,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 15:51:35,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:35,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:35,398 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 137 flow. Second operand 5 states and 496 transitions. [2022-11-25 15:51:35,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 72 transitions, 482 flow [2022-11-25 15:51:35,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 467 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:51:35,410 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 159 flow [2022-11-25 15:51:35,410 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2022-11-25 15:51:35,412 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2022-11-25 15:51:35,413 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 159 flow [2022-11-25 15:51:35,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 15:51:35,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:35,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:35,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:51:35,414 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1561262160, now seen corresponding path program 1 times [2022-11-25 15:51:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:35,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114364217] [2022-11-25 15:51:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:35,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:35,612 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 15:51:35,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:35,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114364217] [2022-11-25 15:51:35,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114364217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:35,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:35,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:51:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912936814] [2022-11-25 15:51:35,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:35,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:51:35,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:51:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:51:35,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-11-25 15:51:35,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 15:51:35,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:35,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-11-25 15:51:35,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:35,913 INFO L130 PetriNetUnfolder]: 993/1498 cut-off events. [2022-11-25 15:51:35,914 INFO L131 PetriNetUnfolder]: For 1856/1856 co-relation queries the response was YES. [2022-11-25 15:51:35,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 1498 events. 993/1498 cut-off events. For 1856/1856 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6186 event pairs, 268 based on Foata normal form. 12/1510 useless extension candidates. Maximal degree in co-relation 4750. Up to 968 conditions per place. [2022-11-25 15:51:35,926 INFO L137 encePairwiseOnDemand]: 172/178 looper letters, 43 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2022-11-25 15:51:35,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 352 flow [2022-11-25 15:51:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:51:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:51:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2022-11-25 15:51:35,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674157303370787 [2022-11-25 15:51:35,933 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2022-11-25 15:51:35,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2022-11-25 15:51:35,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:35,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2022-11-25 15:51:35,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 15:51:35,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 15:51:35,939 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 15:51:35,939 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 159 flow. Second operand 4 states and 404 transitions. [2022-11-25 15:51:35,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 352 flow [2022-11-25 15:51:35,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 317 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-25 15:51:35,948 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 197 flow [2022-11-25 15:51:35,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2022-11-25 15:51:35,952 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2022-11-25 15:51:35,952 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 197 flow [2022-11-25 15:51:35,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 15:51:35,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:35,953 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:35,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:51:35,953 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1413054086, now seen corresponding path program 1 times [2022-11-25 15:51:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:35,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372694066] [2022-11-25 15:51:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:36,167 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 15:51:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:36,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372694066] [2022-11-25 15:51:36,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372694066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:36,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:36,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:36,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780891807] [2022-11-25 15:51:36,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:36,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:51:36,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:51:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:51:36,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-11-25 15:51:36,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 15:51:36,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:36,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-11-25 15:51:36,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:36,595 INFO L130 PetriNetUnfolder]: 1333/2026 cut-off events. [2022-11-25 15:51:36,595 INFO L131 PetriNetUnfolder]: For 2968/2968 co-relation queries the response was YES. [2022-11-25 15:51:36,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6214 conditions, 2026 events. 1333/2026 cut-off events. For 2968/2968 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8972 event pairs, 321 based on Foata normal form. 44/2070 useless extension candidates. Maximal degree in co-relation 6194. Up to 888 conditions per place. [2022-11-25 15:51:36,610 INFO L137 encePairwiseOnDemand]: 172/178 looper letters, 38 selfloop transitions, 8 changer transitions 12/58 dead transitions. [2022-11-25 15:51:36,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 413 flow [2022-11-25 15:51:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:51:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:51:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2022-11-25 15:51:36,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617977528089888 [2022-11-25 15:51:36,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2022-11-25 15:51:36,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2022-11-25 15:51:36,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:36,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2022-11-25 15:51:36,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 15:51:36,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:36,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:36,624 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 197 flow. Second operand 5 states and 500 transitions. [2022-11-25 15:51:36,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 413 flow [2022-11-25 15:51:36,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:51:36,639 INFO L231 Difference]: Finished difference. Result has 48 places, 28 transitions, 184 flow [2022-11-25 15:51:36,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2022-11-25 15:51:36,643 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2022-11-25 15:51:36,643 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 184 flow [2022-11-25 15:51:36,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states 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 15:51:36,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:36,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:36,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:51:36,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1181648089, now seen corresponding path program 1 times [2022-11-25 15:51:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:36,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768446335] [2022-11-25 15:51:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:36,881 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 15:51:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:36,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768446335] [2022-11-25 15:51:36,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768446335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:36,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:36,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:36,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089813539] [2022-11-25 15:51:36,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:36,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:51:36,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:51:36,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:51:36,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-11-25 15:51:36,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 15:51:36,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:36,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-11-25 15:51:36,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:37,116 INFO L130 PetriNetUnfolder]: 770/1195 cut-off events. [2022-11-25 15:51:37,117 INFO L131 PetriNetUnfolder]: For 2289/2289 co-relation queries the response was YES. [2022-11-25 15:51:37,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 1195 events. 770/1195 cut-off events. For 2289/2289 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4998 event pairs, 134 based on Foata normal form. 36/1231 useless extension candidates. Maximal degree in co-relation 3716. Up to 600 conditions per place. [2022-11-25 15:51:37,126 INFO L137 encePairwiseOnDemand]: 173/178 looper letters, 33 selfloop transitions, 7 changer transitions 1/41 dead transitions. [2022-11-25 15:51:37,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 299 flow [2022-11-25 15:51:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:51:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:51:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2022-11-25 15:51:37,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5589887640449438 [2022-11-25 15:51:37,129 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2022-11-25 15:51:37,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2022-11-25 15:51:37,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:37,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2022-11-25 15:51:37,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states 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 15:51:37,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 15:51:37,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states 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 15:51:37,134 INFO L175 Difference]: Start difference. First operand has 48 places, 28 transitions, 184 flow. Second operand 4 states and 398 transitions. [2022-11-25 15:51:37,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 299 flow [2022-11-25 15:51:37,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 264 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-25 15:51:37,142 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 161 flow [2022-11-25 15:51:37,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2022-11-25 15:51:37,143 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2022-11-25 15:51:37,143 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 161 flow [2022-11-25 15:51:37,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states 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 15:51:37,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:37,144 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:37,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:51:37,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:37,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:37,146 INFO L85 PathProgramCache]: Analyzing trace with hash 208402066, now seen corresponding path program 2 times [2022-11-25 15:51:37,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:37,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186938483] [2022-11-25 15:51:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:37,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:37,375 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 15:51:37,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:37,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186938483] [2022-11-25 15:51:37,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186938483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:37,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:37,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:51:37,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641867601] [2022-11-25 15:51:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:37,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:51:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:51:37,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:51:37,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2022-11-25 15:51:37,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 15:51:37,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:37,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2022-11-25 15:51:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:37,647 INFO L130 PetriNetUnfolder]: 604/1010 cut-off events. [2022-11-25 15:51:37,648 INFO L131 PetriNetUnfolder]: For 2003/2021 co-relation queries the response was YES. [2022-11-25 15:51:37,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2943 conditions, 1010 events. 604/1010 cut-off events. For 2003/2021 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5110 event pairs, 211 based on Foata normal form. 51/1004 useless extension candidates. Maximal degree in co-relation 2924. Up to 661 conditions per place. [2022-11-25 15:51:37,655 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 35 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2022-11-25 15:51:37,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 540 flow [2022-11-25 15:51:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:51:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:51:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 514 transitions. [2022-11-25 15:51:37,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5775280898876405 [2022-11-25 15:51:37,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 514 transitions. [2022-11-25 15:51:37,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 514 transitions. [2022-11-25 15:51:37,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:37,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 514 transitions. [2022-11-25 15:51:37,661 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 15:51:37,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:37,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:37,664 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 161 flow. Second operand 5 states and 514 transitions. [2022-11-25 15:51:37,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 540 flow [2022-11-25 15:51:37,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 463 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-25 15:51:37,669 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 177 flow [2022-11-25 15:51:37,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2022-11-25 15:51:37,670 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2022-11-25 15:51:37,670 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 177 flow [2022-11-25 15:51:37,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 15:51:37,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:37,671 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:51:37,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2064743871, now seen corresponding path program 1 times [2022-11-25 15:51:37,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:37,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395610147] [2022-11-25 15:51:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:37,826 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 15:51:37,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:37,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395610147] [2022-11-25 15:51:37,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395610147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:37,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:37,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922789865] [2022-11-25 15:51:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:37,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:51:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:51:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:51:37,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2022-11-25 15:51:37,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 15:51:37,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:37,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2022-11-25 15:51:37,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:38,065 INFO L130 PetriNetUnfolder]: 444/765 cut-off events. [2022-11-25 15:51:38,065 INFO L131 PetriNetUnfolder]: For 2084/2263 co-relation queries the response was YES. [2022-11-25 15:51:38,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 765 events. 444/765 cut-off events. For 2084/2263 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3736 event pairs, 53 based on Foata normal form. 63/788 useless extension candidates. Maximal degree in co-relation 3076. Up to 524 conditions per place. [2022-11-25 15:51:38,071 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 43 selfloop transitions, 9 changer transitions 24/80 dead transitions. [2022-11-25 15:51:38,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 80 transitions, 595 flow [2022-11-25 15:51:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:51:38,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:51:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 617 transitions. [2022-11-25 15:51:38,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5777153558052435 [2022-11-25 15:51:38,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 617 transitions. [2022-11-25 15:51:38,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 617 transitions. [2022-11-25 15:51:38,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:38,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 617 transitions. [2022-11-25 15:51:38,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.83333333333333) internal successors, (617), 6 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 15:51:38,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 15:51:38,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 15:51:38,081 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 177 flow. Second operand 6 states and 617 transitions. [2022-11-25 15:51:38,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 80 transitions, 595 flow [2022-11-25 15:51:38,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 578 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-25 15:51:38,087 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 236 flow [2022-11-25 15:51:38,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2022-11-25 15:51:38,088 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2022-11-25 15:51:38,088 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 236 flow [2022-11-25 15:51:38,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states 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 15:51:38,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:38,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:38,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:51:38,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:38,090 INFO L85 PathProgramCache]: Analyzing trace with hash 417431092, now seen corresponding path program 1 times [2022-11-25 15:51:38,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:38,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713835197] [2022-11-25 15:51:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,257 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 15:51:38,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:38,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713835197] [2022-11-25 15:51:38,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713835197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:38,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:38,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:51:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433978829] [2022-11-25 15:51:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:38,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:51:38,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:51:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:51:38,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2022-11-25 15:51:38,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 15:51:38,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:38,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2022-11-25 15:51:38,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:38,498 INFO L130 PetriNetUnfolder]: 279/510 cut-off events. [2022-11-25 15:51:38,498 INFO L131 PetriNetUnfolder]: For 1719/1935 co-relation queries the response was YES. [2022-11-25 15:51:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 510 events. 279/510 cut-off events. For 1719/1935 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2345 event pairs, 16 based on Foata normal form. 74/560 useless extension candidates. Maximal degree in co-relation 2533. Up to 341 conditions per place. [2022-11-25 15:51:38,503 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 48 selfloop transitions, 13 changer transitions 18/83 dead transitions. [2022-11-25 15:51:38,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 697 flow [2022-11-25 15:51:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:51:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 15:51:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 718 transitions. [2022-11-25 15:51:38,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5762439807383628 [2022-11-25 15:51:38,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 718 transitions. [2022-11-25 15:51:38,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 718 transitions. [2022-11-25 15:51:38,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:38,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 718 transitions. [2022-11-25 15:51:38,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 15:51:38,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states 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 15:51:38,514 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states 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 15:51:38,514 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 236 flow. Second operand 7 states and 718 transitions. [2022-11-25 15:51:38,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 697 flow [2022-11-25 15:51:38,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 83 transitions, 635 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-11-25 15:51:38,524 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 286 flow [2022-11-25 15:51:38,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2022-11-25 15:51:38,525 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2022-11-25 15:51:38,525 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 286 flow [2022-11-25 15:51:38,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 states 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 15:51:38,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:38,526 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 15:51:38,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:51:38,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:38,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1517772603, now seen corresponding path program 1 times [2022-11-25 15:51:38,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:38,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757958811] [2022-11-25 15:51:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:38,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:38,734 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 15:51:38,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:38,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757958811] [2022-11-25 15:51:38,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757958811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:38,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:38,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:51:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408913669] [2022-11-25 15:51:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:38,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:51:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:51:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:51:38,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-11-25 15:51:38,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 15:51:38,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:38,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-11-25 15:51:38,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:38,942 INFO L130 PetriNetUnfolder]: 312/556 cut-off events. [2022-11-25 15:51:38,942 INFO L131 PetriNetUnfolder]: For 1775/1775 co-relation queries the response was YES. [2022-11-25 15:51:38,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 556 events. 312/556 cut-off events. For 1775/1775 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2222 event pairs, 38 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2636. Up to 264 conditions per place. [2022-11-25 15:51:38,947 INFO L137 encePairwiseOnDemand]: 172/178 looper letters, 41 selfloop transitions, 6 changer transitions 46/93 dead transitions. [2022-11-25 15:51:38,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 93 transitions, 915 flow [2022-11-25 15:51:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:51:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:51:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2022-11-25 15:51:38,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5533707865168539 [2022-11-25 15:51:38,951 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 591 transitions. [2022-11-25 15:51:38,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 591 transitions. [2022-11-25 15:51:38,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:38,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 591 transitions. [2022-11-25 15:51:38,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 15:51:38,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 15:51:38,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 15:51:38,958 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 286 flow. Second operand 6 states and 591 transitions. [2022-11-25 15:51:38,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 93 transitions, 915 flow [2022-11-25 15:51:38,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 93 transitions, 733 flow, removed 59 selfloop flow, removed 5 redundant places. [2022-11-25 15:51:38,970 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 228 flow [2022-11-25 15:51:38,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2022-11-25 15:51:38,971 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2022-11-25 15:51:38,972 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 228 flow [2022-11-25 15:51:38,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 15:51:38,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:38,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:38,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:51:38,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1335834895, now seen corresponding path program 1 times [2022-11-25 15:51:38,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:38,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808721490] [2022-11-25 15:51:38,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:38,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:39,213 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 15:51:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:39,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808721490] [2022-11-25 15:51:39,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808721490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:39,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:39,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:51:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928255334] [2022-11-25 15:51:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:39,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:51:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:51:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:51:39,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2022-11-25 15:51:39,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 15:51:39,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:39,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2022-11-25 15:51:39,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:39,415 INFO L130 PetriNetUnfolder]: 127/252 cut-off events. [2022-11-25 15:51:39,415 INFO L131 PetriNetUnfolder]: For 602/708 co-relation queries the response was YES. [2022-11-25 15:51:39,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 252 events. 127/252 cut-off events. For 602/708 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 941 event pairs, 8 based on Foata normal form. 49/291 useless extension candidates. Maximal degree in co-relation 1012. Up to 88 conditions per place. [2022-11-25 15:51:39,417 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 25 selfloop transitions, 17 changer transitions 18/62 dead transitions. [2022-11-25 15:51:39,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 504 flow [2022-11-25 15:51:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:51:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 15:51:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions. [2022-11-25 15:51:39,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5610955056179775 [2022-11-25 15:51:39,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions. [2022-11-25 15:51:39,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions. [2022-11-25 15:51:39,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:39,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions. [2022-11-25 15:51:39,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:39,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 15:51:39,430 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 15:51:39,430 INFO L175 Difference]: Start difference. First operand has 53 places, 36 transitions, 228 flow. Second operand 8 states and 799 transitions. [2022-11-25 15:51:39,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 504 flow [2022-11-25 15:51:39,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 454 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-25 15:51:39,435 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 222 flow [2022-11-25 15:51:39,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2022-11-25 15:51:39,438 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2022-11-25 15:51:39,438 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 222 flow [2022-11-25 15:51:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.42857142857143) internal successors, (668), 7 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 15:51:39,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:51:39,439 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] [2022-11-25 15:51:39,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:51:39,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 15:51:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1512650614, now seen corresponding path program 1 times [2022-11-25 15:51:39,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:39,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656951791] [2022-11-25 15:51:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:39,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:39,602 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 15:51:39,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:39,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656951791] [2022-11-25 15:51:39,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656951791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:39,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:39,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:39,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750957893] [2022-11-25 15:51:39,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:39,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:51:39,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:39,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:51:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:51:39,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 178 [2022-11-25 15:51:39,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 15:51:39,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:51:39,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 178 [2022-11-25 15:51:39,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:51:39,730 INFO L130 PetriNetUnfolder]: 73/142 cut-off events. [2022-11-25 15:51:39,731 INFO L131 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2022-11-25 15:51:39,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 142 events. 73/142 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 339 event pairs, 10 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 602. Up to 85 conditions per place. [2022-11-25 15:51:39,732 INFO L137 encePairwiseOnDemand]: 171/178 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2022-11-25 15:51:39,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 387 flow [2022-11-25 15:51:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:51:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:51:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 469 transitions. [2022-11-25 15:51:39,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5269662921348315 [2022-11-25 15:51:39,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 469 transitions. [2022-11-25 15:51:39,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 469 transitions. [2022-11-25 15:51:39,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:39,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 469 transitions. [2022-11-25 15:51:39,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 15:51:39,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:39,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:39,741 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 222 flow. Second operand 5 states and 469 transitions. [2022-11-25 15:51:39,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 387 flow [2022-11-25 15:51:39,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 310 flow, removed 13 selfloop flow, removed 9 redundant places. [2022-11-25 15:51:39,750 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2022-11-25 15:51:39,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2022-11-25 15:51:39,752 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2022-11-25 15:51:39,753 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2022-11-25 15:51:39,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 15:51:39,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-25 15:51:39,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-25 15:51:39,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-25 15:51:39,761 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-25 15:51:39,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 15:51:39,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:51:39,762 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:39,769 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:51:39,769 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:51:39,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:51:39 BasicIcfg [2022-11-25 15:51:39,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:51:39,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:51:39,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:51:39,778 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:51:39,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:27" (3/4) ... [2022-11-25 15:51:39,783 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 15:51:39,791 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 15:51:39,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 15:51:39,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 15:51:39,792 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-25 15:51:39,800 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-25 15:51:39,800 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 15:51:39,800 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 15:51:39,801 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 15:51:39,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:51:39,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:51:39,851 INFO L158 Benchmark]: Toolchain (without parser) took 13986.19ms. Allocated memory was 203.4MB in the beginning and 295.7MB in the end (delta: 92.3MB). Free memory was 170.1MB in the beginning and 250.1MB in the end (delta: -80.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:51:39,852 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:51:39,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 841.63ms. Allocated memory is still 203.4MB. Free memory was 170.1MB in the beginning and 145.6MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-25 15:51:39,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.41ms. Allocated memory is still 203.4MB. Free memory was 145.6MB in the beginning and 143.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:51:39,853 INFO L158 Benchmark]: Boogie Preprocessor took 62.52ms. Allocated memory is still 203.4MB. Free memory was 143.6MB in the beginning and 142.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:51:39,854 INFO L158 Benchmark]: RCFGBuilder took 677.14ms. Allocated memory is still 203.4MB. Free memory was 142.3MB in the beginning and 127.6MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:51:39,854 INFO L158 Benchmark]: TraceAbstraction took 12258.55ms. Allocated memory was 203.4MB in the beginning and 295.7MB in the end (delta: 92.3MB). Free memory was 126.8MB in the beginning and 253.3MB in the end (delta: -126.5MB). Peak memory consumption was 130.3MB. Max. memory is 16.1GB. [2022-11-25 15:51:39,855 INFO L158 Benchmark]: Witness Printer took 73.04ms. Allocated memory is still 295.7MB. Free memory was 253.3MB in the beginning and 250.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:51:39,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 138.4MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 841.63ms. Allocated memory is still 203.4MB. Free memory was 170.1MB in the beginning and 145.6MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.41ms. Allocated memory is still 203.4MB. Free memory was 145.6MB in the beginning and 143.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.52ms. Allocated memory is still 203.4MB. Free memory was 143.6MB in the beginning and 142.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 677.14ms. Allocated memory is still 203.4MB. Free memory was 142.3MB in the beginning and 127.6MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12258.55ms. Allocated memory was 203.4MB in the beginning and 295.7MB in the end (delta: 92.3MB). Free memory was 126.8MB in the beginning and 253.3MB in the end (delta: -126.5MB). Peak memory consumption was 130.3MB. Max. memory is 16.1GB. * Witness Printer took 73.04ms. Allocated memory is still 295.7MB. Free memory was 253.3MB in the beginning and 250.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 98 PlacesBefore, 33 PlacesAfterwards, 86 TransitionsBefore, 21 TransitionsAfterwards, 1630 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 72 TotalNumberOfCompositions, 2688 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1682, independent: 1605, independent conditional: 0, independent unconditional: 1605, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1172, independent: 1139, independent conditional: 0, independent unconditional: 1139, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1172, independent: 1125, independent conditional: 0, independent unconditional: 1125, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 151, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1682, independent: 466, independent conditional: 0, independent unconditional: 466, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 1172, unknown conditional: 0, unknown unconditional: 1172] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 135 locations, 5 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: 12.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 618 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 482 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1015 IncrementalHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 53 mSDtfsCounter, 1015 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred in iteration=10, InterpolantAutomatonStates: 66, 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, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 794 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 15:51:39,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4deb5260-e2f9-4d14-b950-ebf9450089c4/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