./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8 --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 2b2ed0379679fef7868072cf33e9753c7c5c6d498ba6cea443eeb2e2c1bbc6d1 --- 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-2329fc7 [2022-12-13 19:07:13,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:07:13,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:07:13,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:07:13,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:07:13,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:07:13,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:07:13,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:07:13,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:07:13,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:07:13,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:07:13,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:07:13,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:07:13,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:07:13,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:07:13,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:07:13,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:07:13,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:07:13,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:07:13,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:07:13,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:07:13,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:07:13,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:07:13,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:07:13,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:07:13,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:07:13,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:07:13,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:07:13,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:07:13,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:07:13,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:07:13,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:07:13,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:07:13,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:07:13,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:07:13,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:07:13,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:07:13,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:07:13,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:07:13,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:07:13,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:07:13,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:07:13,786 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:07:13,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:07:13,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:07:13,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:07:13,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:07:13,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:07:13,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:07:13,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:07:13,794 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:07:13,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:07:13,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:07:13,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:07:13,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:07:13,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:07:13,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:07:13,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:07:13,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:07:13,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:07:13,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:07:13,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:07:13,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:07:13,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:07:13,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:07:13,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:07:13,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:07:13,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:07:13,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:07:13,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:07:13,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:07:13,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:07:13,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:07:13,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:07:13,797 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:07:13,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:07:13,797 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:07:13,797 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_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b2ed0379679fef7868072cf33e9753c7c5c6d498ba6cea443eeb2e2c1bbc6d1 [2022-12-13 19:07:13,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:07:13,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:07:13,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:07:13,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:07:13,978 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:07:13,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i [2022-12-13 19:07:16,585 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:07:16,739 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:07:16,739 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i [2022-12-13 19:07:16,749 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/data/0dbe90d7e/53aab53c5f1b4342bab970ab8944a834/FLAGf3b88fb29 [2022-12-13 19:07:16,760 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/data/0dbe90d7e/53aab53c5f1b4342bab970ab8944a834 [2022-12-13 19:07:16,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:07:16,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:07:16,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:07:16,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:07:16,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:07:16,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:07:16" (1/1) ... [2022-12-13 19:07:16,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a754f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:16, skipping insertion in model container [2022-12-13 19:07:16,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:07:16" (1/1) ... [2022-12-13 19:07:16,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:07:16,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:07:16,933 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_993528b7-27ae-4db1-badb-ef854861756d/sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i[949,962] [2022-12-13 19:07:17,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,047 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:07:17,085 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:07:17,094 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_993528b7-27ae-4db1-badb-ef854861756d/sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i[949,962] [2022-12-13 19:07:17,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:07:17,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:07:17,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:07:17,154 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:07:17,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17 WrapperNode [2022-12-13 19:07:17,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:07:17,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:07:17,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:07:17,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:07:17,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,188 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 160 [2022-12-13 19:07:17,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:07:17,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:07:17,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:07:17,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:07:17,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:07:17,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:07:17,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:07:17,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:07:17,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (1/1) ... [2022-12-13 19:07:17,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:07:17,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:17,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:07:17,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:07:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:07:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 19:07:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:07:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:07:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:07:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 19:07:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 19:07:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 19:07:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 19:07:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 19:07:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 19:07:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 19:07:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 19:07:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:07:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 19:07:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:07:17,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:07:17,269 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:07:17,384 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:07:17,386 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:07:17,678 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:07:17,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:07:17,795 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:07:17,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:07:17 BoogieIcfgContainer [2022-12-13 19:07:17,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:07:17,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:07:17,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:07:17,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:07:17,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:07:16" (1/3) ... [2022-12-13 19:07:17,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a592652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:07:17, skipping insertion in model container [2022-12-13 19:07:17,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:07:17" (2/3) ... [2022-12-13 19:07:17,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a592652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:07:17, skipping insertion in model container [2022-12-13 19:07:17,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:07:17" (3/3) ... [2022-12-13 19:07:17,806 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044_tso.oepc.i [2022-12-13 19:07:17,812 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:07:17,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:07:17,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:07:17,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:07:17,856 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 19:07:17,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 139 transitions, 298 flow [2022-12-13 19:07:17,918 INFO L130 PetriNetUnfolder]: 2/135 cut-off events. [2022-12-13 19:07:17,918 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:07:17,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-12-13 19:07:17,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 139 transitions, 298 flow [2022-12-13 19:07:17,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 135 transitions, 282 flow [2022-12-13 19:07:17,928 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:07:17,935 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 135 transitions, 282 flow [2022-12-13 19:07:17,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 135 transitions, 282 flow [2022-12-13 19:07:17,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 282 flow [2022-12-13 19:07:17,957 INFO L130 PetriNetUnfolder]: 2/135 cut-off events. [2022-12-13 19:07:17,958 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:07:17,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-12-13 19:07:17,960 INFO L119 LiptonReduction]: Number of co-enabled transitions 3504 [2022-12-13 19:07:22,128 INFO L134 LiptonReduction]: Checked pairs total: 9532 [2022-12-13 19:07:22,128 INFO L136 LiptonReduction]: Total number of compositions: 119 [2022-12-13 19:07:22,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:07:22,147 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;@c959cf5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:07:22,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 19:07:22,150 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 19:07:22,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:07:22,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:22,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:07:22,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash 553628733, now seen corresponding path program 1 times [2022-12-13 19:07:22,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:22,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464271305] [2022-12-13 19:07:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:22,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:22,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:22,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464271305] [2022-12-13 19:07:22,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464271305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:22,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:22,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:07:22,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683607244] [2022-12-13 19:07:22,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:22,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:07:22,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:07:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:07:22,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 258 [2022-12-13 19:07:22,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 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) [2022-12-13 19:07:22,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:22,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 258 [2022-12-13 19:07:22,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:23,555 INFO L130 PetriNetUnfolder]: 4903/6861 cut-off events. [2022-12-13 19:07:23,555 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2022-12-13 19:07:23,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13709 conditions, 6861 events. 4903/6861 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 34806 event pairs, 1733 based on Foata normal form. 0/6500 useless extension candidates. Maximal degree in co-relation 13697. Up to 5323 conditions per place. [2022-12-13 19:07:23,597 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 39 selfloop transitions, 2 changer transitions 2/47 dead transitions. [2022-12-13 19:07:23,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 198 flow [2022-12-13 19:07:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:07:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:07:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2022-12-13 19:07:23,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5335917312661499 [2022-12-13 19:07:23,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2022-12-13 19:07:23,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2022-12-13 19:07:23,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:23,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2022-12-13 19:07:23,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:23,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:23,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:23,625 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 413 transitions. [2022-12-13 19:07:23,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 198 flow [2022-12-13 19:07:23,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 19:07:23,629 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2022-12-13 19:07:23,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2022-12-13 19:07:23,633 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2022-12-13 19:07:23,633 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2022-12-13 19:07:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 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) [2022-12-13 19:07:23,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:23,634 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:23,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:07:23,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:23,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1630831474, now seen corresponding path program 1 times [2022-12-13 19:07:23,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:23,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841180124] [2022-12-13 19:07:23,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:23,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:23,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:23,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841180124] [2022-12-13 19:07:23,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841180124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:23,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:23,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:07:23,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903409186] [2022-12-13 19:07:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:23,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:07:23,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:23,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:07:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:07:23,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 258 [2022-12-13 19:07:23,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 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) [2022-12-13 19:07:23,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:23,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 258 [2022-12-13 19:07:23,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:24,635 INFO L130 PetriNetUnfolder]: 4871/6884 cut-off events. [2022-12-13 19:07:24,635 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2022-12-13 19:07:24,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14170 conditions, 6884 events. 4871/6884 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 35091 event pairs, 1175 based on Foata normal form. 32/6911 useless extension candidates. Maximal degree in co-relation 14160. Up to 6097 conditions per place. [2022-12-13 19:07:24,663 INFO L137 encePairwiseOnDemand]: 254/258 looper letters, 35 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2022-12-13 19:07:24,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 174 flow [2022-12-13 19:07:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:07:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:07:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2022-12-13 19:07:24,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403 [2022-12-13 19:07:24,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2022-12-13 19:07:24,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2022-12-13 19:07:24,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:24,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2022-12-13 19:07:24,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 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) [2022-12-13 19:07:24,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:24,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:24,667 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 402 transitions. [2022-12-13 19:07:24,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 174 flow [2022-12-13 19:07:24,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:07:24,669 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 83 flow [2022-12-13 19:07:24,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2022-12-13 19:07:24,669 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2022-12-13 19:07:24,670 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 83 flow [2022-12-13 19:07:24,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 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) [2022-12-13 19:07:24,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:24,670 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:24,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:07:24,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:24,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash -983834078, now seen corresponding path program 1 times [2022-12-13 19:07:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:24,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100687025] [2022-12-13 19:07:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:24,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:25,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:25,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100687025] [2022-12-13 19:07:25,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100687025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:25,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:25,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:07:25,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162613972] [2022-12-13 19:07:25,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:25,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:07:25,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:25,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:07:25,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:07:25,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 258 [2022-12-13 19:07:25,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:25,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:25,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 258 [2022-12-13 19:07:25,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:26,122 INFO L130 PetriNetUnfolder]: 7805/10575 cut-off events. [2022-12-13 19:07:26,122 INFO L131 PetriNetUnfolder]: For 1008/1008 co-relation queries the response was YES. [2022-12-13 19:07:26,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22804 conditions, 10575 events. 7805/10575 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 49664 event pairs, 2289 based on Foata normal form. 240/10814 useless extension candidates. Maximal degree in co-relation 22793. Up to 6973 conditions per place. [2022-12-13 19:07:26,179 INFO L137 encePairwiseOnDemand]: 246/258 looper letters, 44 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2022-12-13 19:07:26,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 247 flow [2022-12-13 19:07:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:07:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:07:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 499 transitions. [2022-12-13 19:07:26,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48352713178294576 [2022-12-13 19:07:26,181 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 499 transitions. [2022-12-13 19:07:26,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 499 transitions. [2022-12-13 19:07:26,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:26,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 499 transitions. [2022-12-13 19:07:26,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:26,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:26,185 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:26,185 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 83 flow. Second operand 4 states and 499 transitions. [2022-12-13 19:07:26,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 247 flow [2022-12-13 19:07:26,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:07:26,187 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 166 flow [2022-12-13 19:07:26,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-12-13 19:07:26,187 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2022-12-13 19:07:26,187 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 166 flow [2022-12-13 19:07:26,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:26,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:26,188 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:26,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:07:26,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:26,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash -436594691, now seen corresponding path program 1 times [2022-12-13 19:07:26,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:26,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639735053] [2022-12-13 19:07:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:26,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:26,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639735053] [2022-12-13 19:07:26,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639735053] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:26,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:26,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:07:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952192103] [2022-12-13 19:07:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:26,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:07:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:07:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:07:26,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 258 [2022-12-13 19:07:26,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:26,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:26,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 258 [2022-12-13 19:07:26,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:27,678 INFO L130 PetriNetUnfolder]: 7963/11137 cut-off events. [2022-12-13 19:07:27,678 INFO L131 PetriNetUnfolder]: For 6730/6777 co-relation queries the response was YES. [2022-12-13 19:07:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31212 conditions, 11137 events. 7963/11137 cut-off events. For 6730/6777 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 59293 event pairs, 2781 based on Foata normal form. 69/10763 useless extension candidates. Maximal degree in co-relation 31197. Up to 9326 conditions per place. [2022-12-13 19:07:27,721 INFO L137 encePairwiseOnDemand]: 254/258 looper letters, 51 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2022-12-13 19:07:27,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 360 flow [2022-12-13 19:07:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:07:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:07:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2022-12-13 19:07:27,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5335917312661499 [2022-12-13 19:07:27,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2022-12-13 19:07:27,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2022-12-13 19:07:27,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:27,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2022-12-13 19:07:27,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:27,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:27,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:27,726 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 166 flow. Second operand 3 states and 413 transitions. [2022-12-13 19:07:27,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 360 flow [2022-12-13 19:07:27,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:07:27,733 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 196 flow [2022-12-13 19:07:27,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2022-12-13 19:07:27,734 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2022-12-13 19:07:27,734 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 196 flow [2022-12-13 19:07:27,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:27,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:27,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:27,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:07:27,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:27,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash -649535846, now seen corresponding path program 1 times [2022-12-13 19:07:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:27,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135856307] [2022-12-13 19:07:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:28,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:28,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135856307] [2022-12-13 19:07:28,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135856307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:28,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:28,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:07:28,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039733446] [2022-12-13 19:07:28,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:28,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:07:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:28,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:07:28,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:07:28,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 258 [2022-12-13 19:07:28,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:28,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:28,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 258 [2022-12-13 19:07:28,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:29,592 INFO L130 PetriNetUnfolder]: 8814/12315 cut-off events. [2022-12-13 19:07:29,592 INFO L131 PetriNetUnfolder]: For 9843/10119 co-relation queries the response was YES. [2022-12-13 19:07:29,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36376 conditions, 12315 events. 8814/12315 cut-off events. For 9843/10119 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 68126 event pairs, 1903 based on Foata normal form. 275/12074 useless extension candidates. Maximal degree in co-relation 36359. Up to 9375 conditions per place. [2022-12-13 19:07:29,633 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 78 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2022-12-13 19:07:29,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 623 flow [2022-12-13 19:07:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:07:29,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:07:29,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 686 transitions. [2022-12-13 19:07:29,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5317829457364341 [2022-12-13 19:07:29,634 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 686 transitions. [2022-12-13 19:07:29,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 686 transitions. [2022-12-13 19:07:29,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:29,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 686 transitions. [2022-12-13 19:07:29,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:29,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:29,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:29,638 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 196 flow. Second operand 5 states and 686 transitions. [2022-12-13 19:07:29,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 623 flow [2022-12-13 19:07:29,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:07:29,643 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 352 flow [2022-12-13 19:07:29,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2022-12-13 19:07:29,643 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2022-12-13 19:07:29,644 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 352 flow [2022-12-13 19:07:29,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:29,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:29,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:29,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:07:29,644 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1908567767, now seen corresponding path program 1 times [2022-12-13 19:07:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:29,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526068141] [2022-12-13 19:07:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:29,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:29,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526068141] [2022-12-13 19:07:29,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526068141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:29,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:29,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:07:29,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381500795] [2022-12-13 19:07:29,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:29,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:07:29,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:29,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:07:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:07:29,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 258 [2022-12-13 19:07:29,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:29,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:29,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 258 [2022-12-13 19:07:29,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:31,575 INFO L130 PetriNetUnfolder]: 10439/14309 cut-off events. [2022-12-13 19:07:31,575 INFO L131 PetriNetUnfolder]: For 28992/30297 co-relation queries the response was YES. [2022-12-13 19:07:31,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50674 conditions, 14309 events. 10439/14309 cut-off events. For 28992/30297 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 75978 event pairs, 6088 based on Foata normal form. 757/14463 useless extension candidates. Maximal degree in co-relation 50654. Up to 11245 conditions per place. [2022-12-13 19:07:31,633 INFO L137 encePairwiseOnDemand]: 251/258 looper letters, 56 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2022-12-13 19:07:31,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 633 flow [2022-12-13 19:07:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:07:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:07:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 529 transitions. [2022-12-13 19:07:31,635 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5125968992248062 [2022-12-13 19:07:31,635 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 529 transitions. [2022-12-13 19:07:31,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 529 transitions. [2022-12-13 19:07:31,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:31,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 529 transitions. [2022-12-13 19:07:31,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:31,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:31,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:31,638 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 352 flow. Second operand 4 states and 529 transitions. [2022-12-13 19:07:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 633 flow [2022-12-13 19:07:31,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 627 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:07:31,654 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 487 flow [2022-12-13 19:07:31,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2022-12-13 19:07:31,655 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2022-12-13 19:07:31,656 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 487 flow [2022-12-13 19:07:31,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:31,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:31,656 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:31,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:07:31,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1085776817, now seen corresponding path program 1 times [2022-12-13 19:07:31,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665888646] [2022-12-13 19:07:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:31,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:32,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665888646] [2022-12-13 19:07:32,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665888646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:32,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:32,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:07:32,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395138143] [2022-12-13 19:07:32,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:32,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:07:32,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:32,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:07:32,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:07:32,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 258 [2022-12-13 19:07:32,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 487 flow. Second operand has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:32,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:32,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 258 [2022-12-13 19:07:32,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:33,772 INFO L130 PetriNetUnfolder]: 11514/16029 cut-off events. [2022-12-13 19:07:33,772 INFO L131 PetriNetUnfolder]: For 45011/47009 co-relation queries the response was YES. [2022-12-13 19:07:33,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63718 conditions, 16029 events. 11514/16029 cut-off events. For 45011/47009 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 91130 event pairs, 1553 based on Foata normal form. 681/16008 useless extension candidates. Maximal degree in co-relation 63696. Up to 11395 conditions per place. [2022-12-13 19:07:33,850 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 106 selfloop transitions, 30 changer transitions 0/143 dead transitions. [2022-12-13 19:07:33,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 143 transitions, 1256 flow [2022-12-13 19:07:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:07:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:07:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-12-13 19:07:33,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5302325581395348 [2022-12-13 19:07:33,853 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-12-13 19:07:33,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-12-13 19:07:33,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:33,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-12-13 19:07:33,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:33,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:33,859 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:33,859 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 487 flow. Second operand 5 states and 684 transitions. [2022-12-13 19:07:33,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 143 transitions, 1256 flow [2022-12-13 19:07:33,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 143 transitions, 1153 flow, removed 34 selfloop flow, removed 2 redundant places. [2022-12-13 19:07:33,950 INFO L231 Difference]: Finished difference. Result has 59 places, 89 transitions, 783 flow [2022-12-13 19:07:33,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=783, PETRI_PLACES=59, PETRI_TRANSITIONS=89} [2022-12-13 19:07:33,950 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2022-12-13 19:07:33,951 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 89 transitions, 783 flow [2022-12-13 19:07:33,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:33,951 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:33,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:33,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:07:33,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1433803751, now seen corresponding path program 1 times [2022-12-13 19:07:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:33,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921505849] [2022-12-13 19:07:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921505849] [2022-12-13 19:07:34,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921505849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:34,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:34,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:07:34,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902547740] [2022-12-13 19:07:34,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:34,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:07:34,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:07:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:07:34,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 258 [2022-12-13 19:07:34,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 89 transitions, 783 flow. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:34,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:34,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 258 [2022-12-13 19:07:34,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:35,717 INFO L130 PetriNetUnfolder]: 9652/13294 cut-off events. [2022-12-13 19:07:35,717 INFO L131 PetriNetUnfolder]: For 73263/76449 co-relation queries the response was YES. [2022-12-13 19:07:35,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58352 conditions, 13294 events. 9652/13294 cut-off events. For 73263/76449 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 73771 event pairs, 1397 based on Foata normal form. 2447/14996 useless extension candidates. Maximal degree in co-relation 58328. Up to 7759 conditions per place. [2022-12-13 19:07:35,770 INFO L137 encePairwiseOnDemand]: 251/258 looper letters, 252 selfloop transitions, 10 changer transitions 17/289 dead transitions. [2022-12-13 19:07:35,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 289 transitions, 3234 flow [2022-12-13 19:07:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:07:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:07:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2022-12-13 19:07:35,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5131782945736434 [2022-12-13 19:07:35,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2022-12-13 19:07:35,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2022-12-13 19:07:35,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:35,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2022-12-13 19:07:35,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:35,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:35,775 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:35,775 INFO L175 Difference]: Start difference. First operand has 59 places, 89 transitions, 783 flow. Second operand 5 states and 662 transitions. [2022-12-13 19:07:35,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 289 transitions, 3234 flow [2022-12-13 19:07:35,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 289 transitions, 3078 flow, removed 78 selfloop flow, removed 0 redundant places. [2022-12-13 19:07:35,809 INFO L231 Difference]: Finished difference. Result has 66 places, 98 transitions, 822 flow [2022-12-13 19:07:35,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=822, PETRI_PLACES=66, PETRI_TRANSITIONS=98} [2022-12-13 19:07:35,810 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2022-12-13 19:07:35,810 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 98 transitions, 822 flow [2022-12-13 19:07:35,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:35,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:35,810 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:35,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:07:35,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:35,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1944616191, now seen corresponding path program 1 times [2022-12-13 19:07:35,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:35,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104088486] [2022-12-13 19:07:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:35,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:35,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104088486] [2022-12-13 19:07:35,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104088486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:35,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:35,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:07:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148674498] [2022-12-13 19:07:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:35,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:07:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:07:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:07:35,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 258 [2022-12-13 19:07:35,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 98 transitions, 822 flow. Second operand has 5 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:35,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:35,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 258 [2022-12-13 19:07:35,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:37,249 INFO L130 PetriNetUnfolder]: 7761/10856 cut-off events. [2022-12-13 19:07:37,249 INFO L131 PetriNetUnfolder]: For 60184/63249 co-relation queries the response was YES. [2022-12-13 19:07:37,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51581 conditions, 10856 events. 7761/10856 cut-off events. For 60184/63249 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 60536 event pairs, 707 based on Foata normal form. 1926/12193 useless extension candidates. Maximal degree in co-relation 51552. Up to 5980 conditions per place. [2022-12-13 19:07:37,292 INFO L137 encePairwiseOnDemand]: 251/258 looper letters, 297 selfloop transitions, 19 changer transitions 50/376 dead transitions. [2022-12-13 19:07:37,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 376 transitions, 4065 flow [2022-12-13 19:07:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:07:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:07:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 929 transitions. [2022-12-13 19:07:37,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5143964562569213 [2022-12-13 19:07:37,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 929 transitions. [2022-12-13 19:07:37,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 929 transitions. [2022-12-13 19:07:37,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:37,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 929 transitions. [2022-12-13 19:07:37,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.71428571428572) internal successors, (929), 7 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:37,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:37,298 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:37,298 INFO L175 Difference]: Start difference. First operand has 66 places, 98 transitions, 822 flow. Second operand 7 states and 929 transitions. [2022-12-13 19:07:37,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 376 transitions, 4065 flow [2022-12-13 19:07:37,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 376 transitions, 4060 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:07:37,344 INFO L231 Difference]: Finished difference. Result has 74 places, 107 transitions, 953 flow [2022-12-13 19:07:37,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=953, PETRI_PLACES=74, PETRI_TRANSITIONS=107} [2022-12-13 19:07:37,345 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2022-12-13 19:07:37,345 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 107 transitions, 953 flow [2022-12-13 19:07:37,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:37,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:37,345 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] [2022-12-13 19:07:37,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:07:37,346 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:37,346 INFO L85 PathProgramCache]: Analyzing trace with hash -29541749, now seen corresponding path program 1 times [2022-12-13 19:07:37,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:37,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865775497] [2022-12-13 19:07:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:37,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:37,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:37,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865775497] [2022-12-13 19:07:37,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865775497] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:37,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:37,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:07:37,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882926292] [2022-12-13 19:07:37,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:37,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:07:37,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:07:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:07:37,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 258 [2022-12-13 19:07:37,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 107 transitions, 953 flow. Second operand has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:37,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:37,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 258 [2022-12-13 19:07:37,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:39,186 INFO L130 PetriNetUnfolder]: 10957/16009 cut-off events. [2022-12-13 19:07:39,186 INFO L131 PetriNetUnfolder]: For 86349/88528 co-relation queries the response was YES. [2022-12-13 19:07:39,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81459 conditions, 16009 events. 10957/16009 cut-off events. For 86349/88528 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 102243 event pairs, 1401 based on Foata normal form. 1190/16734 useless extension candidates. Maximal degree in co-relation 81426. Up to 8848 conditions per place. [2022-12-13 19:07:39,236 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 152 selfloop transitions, 3 changer transitions 75/238 dead transitions. [2022-12-13 19:07:39,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 238 transitions, 2617 flow [2022-12-13 19:07:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:07:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:07:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 538 transitions. [2022-12-13 19:07:39,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5213178294573644 [2022-12-13 19:07:39,238 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 538 transitions. [2022-12-13 19:07:39,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 538 transitions. [2022-12-13 19:07:39,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:39,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 538 transitions. [2022-12-13 19:07:39,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:39,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:39,240 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:39,240 INFO L175 Difference]: Start difference. First operand has 74 places, 107 transitions, 953 flow. Second operand 4 states and 538 transitions. [2022-12-13 19:07:39,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 238 transitions, 2617 flow [2022-12-13 19:07:39,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 238 transitions, 2494 flow, removed 47 selfloop flow, removed 2 redundant places. [2022-12-13 19:07:39,791 INFO L231 Difference]: Finished difference. Result has 77 places, 107 transitions, 919 flow [2022-12-13 19:07:39,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=919, PETRI_PLACES=77, PETRI_TRANSITIONS=107} [2022-12-13 19:07:39,791 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2022-12-13 19:07:39,791 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 107 transitions, 919 flow [2022-12-13 19:07:39,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:39,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:39,792 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] [2022-12-13 19:07:39,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:07:39,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:39,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:39,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1082714933, now seen corresponding path program 2 times [2022-12-13 19:07:39,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:39,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588388118] [2022-12-13 19:07:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:39,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:40,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:40,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588388118] [2022-12-13 19:07:40,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588388118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:40,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:40,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:07:40,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554813396] [2022-12-13 19:07:40,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:40,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:07:40,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:07:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:07:40,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 258 [2022-12-13 19:07:40,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 107 transitions, 919 flow. Second operand has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:40,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:40,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 258 [2022-12-13 19:07:40,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:42,093 INFO L130 PetriNetUnfolder]: 10369/15455 cut-off events. [2022-12-13 19:07:42,093 INFO L131 PetriNetUnfolder]: For 70525/72460 co-relation queries the response was YES. [2022-12-13 19:07:42,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75399 conditions, 15455 events. 10369/15455 cut-off events. For 70525/72460 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 99975 event pairs, 1221 based on Foata normal form. 730/15671 useless extension candidates. Maximal degree in co-relation 75364. Up to 12126 conditions per place. [2022-12-13 19:07:42,166 INFO L137 encePairwiseOnDemand]: 254/258 looper letters, 143 selfloop transitions, 8 changer transitions 5/165 dead transitions. [2022-12-13 19:07:42,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 165 transitions, 1619 flow [2022-12-13 19:07:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:07:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:07:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2022-12-13 19:07:42,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5261627906976745 [2022-12-13 19:07:42,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2022-12-13 19:07:42,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2022-12-13 19:07:42,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:42,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2022-12-13 19:07:42,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:42,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:42,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:42,176 INFO L175 Difference]: Start difference. First operand has 77 places, 107 transitions, 919 flow. Second operand 4 states and 543 transitions. [2022-12-13 19:07:42,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 165 transitions, 1619 flow [2022-12-13 19:07:42,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 165 transitions, 1617 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:07:42,595 INFO L231 Difference]: Finished difference. Result has 80 places, 107 transitions, 941 flow [2022-12-13 19:07:42,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=941, PETRI_PLACES=80, PETRI_TRANSITIONS=107} [2022-12-13 19:07:42,595 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2022-12-13 19:07:42,595 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 107 transitions, 941 flow [2022-12-13 19:07:42,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:42,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:42,596 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] [2022-12-13 19:07:42,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:07:42,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1450523586, now seen corresponding path program 1 times [2022-12-13 19:07:42,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:42,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797805485] [2022-12-13 19:07:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:42,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:42,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:42,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797805485] [2022-12-13 19:07:42,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797805485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:42,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:42,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:07:42,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667979365] [2022-12-13 19:07:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:42,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:07:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:07:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:07:42,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 258 [2022-12-13 19:07:42,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 107 transitions, 941 flow. Second operand has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:42,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:42,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 258 [2022-12-13 19:07:42,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:45,001 INFO L130 PetriNetUnfolder]: 9113/12835 cut-off events. [2022-12-13 19:07:45,002 INFO L131 PetriNetUnfolder]: For 85540/89197 co-relation queries the response was YES. [2022-12-13 19:07:45,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65999 conditions, 12835 events. 9113/12835 cut-off events. For 85540/89197 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 75808 event pairs, 663 based on Foata normal form. 2102/14285 useless extension candidates. Maximal degree in co-relation 65962. Up to 7240 conditions per place. [2022-12-13 19:07:45,057 INFO L137 encePairwiseOnDemand]: 251/258 looper letters, 328 selfloop transitions, 25 changer transitions 48/413 dead transitions. [2022-12-13 19:07:45,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 413 transitions, 4610 flow [2022-12-13 19:07:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:07:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:07:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1192 transitions. [2022-12-13 19:07:45,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5133505598621878 [2022-12-13 19:07:45,060 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1192 transitions. [2022-12-13 19:07:45,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1192 transitions. [2022-12-13 19:07:45,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:45,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1192 transitions. [2022-12-13 19:07:45,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.44444444444446) internal successors, (1192), 9 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:45,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:45,064 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:45,064 INFO L175 Difference]: Start difference. First operand has 80 places, 107 transitions, 941 flow. Second operand 9 states and 1192 transitions. [2022-12-13 19:07:45,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 413 transitions, 4610 flow [2022-12-13 19:07:45,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 413 transitions, 4531 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-12-13 19:07:45,505 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 1090 flow [2022-12-13 19:07:45,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1090, PETRI_PLACES=89, PETRI_TRANSITIONS=115} [2022-12-13 19:07:45,506 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2022-12-13 19:07:45,506 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 1090 flow [2022-12-13 19:07:45,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:45,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:45,506 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:45,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:07:45,506 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:45,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash 738891, now seen corresponding path program 1 times [2022-12-13 19:07:45,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:45,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234553783] [2022-12-13 19:07:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:45,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:45,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:45,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234553783] [2022-12-13 19:07:45,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234553783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:45,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:45,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:07:45,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118927874] [2022-12-13 19:07:45,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:45,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:07:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:07:45,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:07:45,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 258 [2022-12-13 19:07:45,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 1090 flow. Second operand has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:45,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:45,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 258 [2022-12-13 19:07:45,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:47,465 INFO L130 PetriNetUnfolder]: 9069/12769 cut-off events. [2022-12-13 19:07:47,465 INFO L131 PetriNetUnfolder]: For 89285/92915 co-relation queries the response was YES. [2022-12-13 19:07:47,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68248 conditions, 12769 events. 9069/12769 cut-off events. For 89285/92915 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 75845 event pairs, 648 based on Foata normal form. 1793/13890 useless extension candidates. Maximal degree in co-relation 68208. Up to 7181 conditions per place. [2022-12-13 19:07:47,512 INFO L137 encePairwiseOnDemand]: 251/258 looper letters, 309 selfloop transitions, 30 changer transitions 63/412 dead transitions. [2022-12-13 19:07:47,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 412 transitions, 4611 flow [2022-12-13 19:07:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:07:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:07:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1428 transitions. [2022-12-13 19:07:47,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5031712473572939 [2022-12-13 19:07:47,515 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1428 transitions. [2022-12-13 19:07:47,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1428 transitions. [2022-12-13 19:07:47,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:47,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1428 transitions. [2022-12-13 19:07:47,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.8181818181818) internal successors, (1428), 11 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:47,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 258.0) internal successors, (3096), 12 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:47,520 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 258.0) internal successors, (3096), 12 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:47,520 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 1090 flow. Second operand 11 states and 1428 transitions. [2022-12-13 19:07:47,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 412 transitions, 4611 flow [2022-12-13 19:07:48,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 412 transitions, 4472 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-12-13 19:07:48,325 INFO L231 Difference]: Finished difference. Result has 96 places, 113 transitions, 1033 flow [2022-12-13 19:07:48,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1033, PETRI_PLACES=96, PETRI_TRANSITIONS=113} [2022-12-13 19:07:48,325 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2022-12-13 19:07:48,325 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 113 transitions, 1033 flow [2022-12-13 19:07:48,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:48,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:48,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:48,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:07:48,326 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:48,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1573629541, now seen corresponding path program 1 times [2022-12-13 19:07:48,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:48,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155070098] [2022-12-13 19:07:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:48,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:48,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:48,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155070098] [2022-12-13 19:07:48,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155070098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:48,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:48,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:07:48,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12118738] [2022-12-13 19:07:48,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:48,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:07:48,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:48,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:07:48,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:07:48,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 258 [2022-12-13 19:07:48,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 113 transitions, 1033 flow. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:48,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:48,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 258 [2022-12-13 19:07:48,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:49,962 INFO L130 PetriNetUnfolder]: 9349/13904 cut-off events. [2022-12-13 19:07:49,962 INFO L131 PetriNetUnfolder]: For 67821/69126 co-relation queries the response was YES. [2022-12-13 19:07:50,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68813 conditions, 13904 events. 9349/13904 cut-off events. For 67821/69126 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 88495 event pairs, 1263 based on Foata normal form. 1089/14924 useless extension candidates. Maximal degree in co-relation 68780. Up to 6779 conditions per place. [2022-12-13 19:07:50,014 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 112 selfloop transitions, 1 changer transitions 120/241 dead transitions. [2022-12-13 19:07:50,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 241 transitions, 2669 flow [2022-12-13 19:07:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:07:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:07:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 535 transitions. [2022-12-13 19:07:50,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5184108527131783 [2022-12-13 19:07:50,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 535 transitions. [2022-12-13 19:07:50,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 535 transitions. [2022-12-13 19:07:50,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:50,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 535 transitions. [2022-12-13 19:07:50,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:50,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:50,018 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:50,018 INFO L175 Difference]: Start difference. First operand has 96 places, 113 transitions, 1033 flow. Second operand 4 states and 535 transitions. [2022-12-13 19:07:50,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 241 transitions, 2669 flow [2022-12-13 19:07:50,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 241 transitions, 2402 flow, removed 55 selfloop flow, removed 12 redundant places. [2022-12-13 19:07:50,435 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 721 flow [2022-12-13 19:07:50,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2022-12-13 19:07:50,435 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2022-12-13 19:07:50,435 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 721 flow [2022-12-13 19:07:50,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:50,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:50,436 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:50,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:07:50,436 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash 424129309, now seen corresponding path program 2 times [2022-12-13 19:07:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:50,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069951026] [2022-12-13 19:07:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:50,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:50,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:50,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069951026] [2022-12-13 19:07:50,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069951026] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:50,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:50,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:07:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565040297] [2022-12-13 19:07:50,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:50,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:07:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:50,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:07:50,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:07:50,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 258 [2022-12-13 19:07:50,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 721 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:50,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:07:50,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 258 [2022-12-13 19:07:50,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:07:51,763 INFO L130 PetriNetUnfolder]: 6186/9428 cut-off events. [2022-12-13 19:07:51,763 INFO L131 PetriNetUnfolder]: For 36883/37680 co-relation queries the response was YES. [2022-12-13 19:07:51,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43420 conditions, 9428 events. 6186/9428 cut-off events. For 36883/37680 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 58155 event pairs, 1318 based on Foata normal form. 673/10083 useless extension candidates. Maximal degree in co-relation 43390. Up to 4960 conditions per place. [2022-12-13 19:07:51,790 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 60 selfloop transitions, 4 changer transitions 88/154 dead transitions. [2022-12-13 19:07:51,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 1467 flow [2022-12-13 19:07:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:07:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:07:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2022-12-13 19:07:51,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48643410852713176 [2022-12-13 19:07:51,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 502 transitions. [2022-12-13 19:07:51,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 502 transitions. [2022-12-13 19:07:51,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:07:51,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 502 transitions. [2022-12-13 19:07:51,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:51,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:51,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:51,794 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 721 flow. Second operand 4 states and 502 transitions. [2022-12-13 19:07:51,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 1467 flow [2022-12-13 19:07:51,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 154 transitions, 1447 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-12-13 19:07:51,898 INFO L231 Difference]: Finished difference. Result has 80 places, 52 transitions, 354 flow [2022-12-13 19:07:51,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=80, PETRI_TRANSITIONS=52} [2022-12-13 19:07:51,899 INFO L288 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2022-12-13 19:07:51,899 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 52 transitions, 354 flow [2022-12-13 19:07:51,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:07:51,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:07:51,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:07:51,899 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:07:51,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash -752845137, now seen corresponding path program 3 times [2022-12-13 19:07:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:51,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893833749] [2022-12-13 19:07:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:07:51,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:07:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:07:51,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:07:51,980 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:07:51,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 19:07:51,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 19:07:51,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 19:07:51,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 19:07:51,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 19:07:51,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-13 19:07:51,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 19:07:51,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:07:51,983 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:51,987 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:07:51,987 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:07:52,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:07:52 BasicIcfg [2022-12-13 19:07:52,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:07:52,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:07:52,034 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:07:52,034 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:07:52,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:07:17" (3/4) ... [2022-12-13 19:07:52,036 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 19:07:52,125 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:07:52,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:07:52,126 INFO L158 Benchmark]: Toolchain (without parser) took 35363.03ms. Allocated memory was 140.5MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 97.3MB in the beginning and 1.0GB in the end (delta: -943.6MB). Peak memory consumption was 826.3MB. Max. memory is 16.1GB. [2022-12-13 19:07:52,126 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory was 110.0MB in the beginning and 109.8MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:07:52,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.82ms. Allocated memory is still 140.5MB. Free memory was 96.9MB in the beginning and 68.9MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 19:07:52,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.04ms. Allocated memory is still 140.5MB. Free memory was 68.4MB in the beginning and 65.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:07:52,127 INFO L158 Benchmark]: Boogie Preprocessor took 20.74ms. Allocated memory is still 140.5MB. Free memory was 65.9MB in the beginning and 63.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:07:52,127 INFO L158 Benchmark]: RCFGBuilder took 587.48ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 63.8MB in the beginning and 113.6MB in the end (delta: -49.8MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2022-12-13 19:07:52,128 INFO L158 Benchmark]: TraceAbstraction took 34233.32ms. Allocated memory was 169.9MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 113.3MB in the beginning and 1.1GB in the end (delta: -943.3MB). Peak memory consumption was 797.3MB. Max. memory is 16.1GB. [2022-12-13 19:07:52,128 INFO L158 Benchmark]: Witness Printer took 90.96ms. Allocated memory is still 1.9GB. Free memory was 1.1GB in the beginning and 1.0GB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 19:07:52,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory was 110.0MB in the beginning and 109.8MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.82ms. Allocated memory is still 140.5MB. Free memory was 96.9MB in the beginning and 68.9MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.04ms. Allocated memory is still 140.5MB. Free memory was 68.4MB in the beginning and 65.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.74ms. Allocated memory is still 140.5MB. Free memory was 65.9MB in the beginning and 63.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.48ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 63.8MB in the beginning and 113.6MB in the end (delta: -49.8MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * TraceAbstraction took 34233.32ms. Allocated memory was 169.9MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 113.3MB in the beginning and 1.1GB in the end (delta: -943.3MB). Peak memory consumption was 797.3MB. Max. memory is 16.1GB. * Witness Printer took 90.96ms. Allocated memory is still 1.9GB. Free memory was 1.1GB in the beginning and 1.0GB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 146 PlacesBefore, 43 PlacesAfterwards, 135 TransitionsBefore, 30 TransitionsAfterwards, 3504 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 119 TotalNumberOfCompositions, 9532 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4090, independent: 3845, independent conditional: 0, independent unconditional: 3845, dependent: 245, dependent conditional: 0, dependent unconditional: 245, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1908, independent: 1854, independent conditional: 0, independent unconditional: 1854, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4090, independent: 1991, independent conditional: 0, independent unconditional: 1991, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 1908, unknown conditional: 0, unknown unconditional: 1908] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 145, Positive conditional cache size: 0, Positive unconditional cache size: 145, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L720] 0 int b = 0; [L721] 0 _Bool main$tmp_guard0; [L722] 0 _Bool main$tmp_guard1; [L724] 0 int x = 0; [L725] 0 _Bool x$flush_delayed; [L726] 0 int x$mem_tmp; [L727] 0 _Bool x$r_buff0_thd0; [L728] 0 _Bool x$r_buff0_thd1; [L729] 0 _Bool x$r_buff0_thd2; [L730] 0 _Bool x$r_buff0_thd3; [L731] 0 _Bool x$r_buff0_thd4; [L732] 0 _Bool x$r_buff1_thd0; [L733] 0 _Bool x$r_buff1_thd1; [L734] 0 _Bool x$r_buff1_thd2; [L735] 0 _Bool x$r_buff1_thd3; [L736] 0 _Bool x$r_buff1_thd4; [L737] 0 _Bool x$read_delayed; [L738] 0 int *x$read_delayed_var; [L739] 0 int x$w_buff0; [L740] 0 _Bool x$w_buff0_used; [L741] 0 int x$w_buff1; [L742] 0 _Bool x$w_buff1_used; [L744] 0 int y = 0; [L746] 0 int z = 0; [L747] 0 _Bool weak$$choice0; [L748] 0 _Bool weak$$choice2; [L856] 0 pthread_t t1185; [L857] FCALL, FORK 0 pthread_create(&t1185, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1185, ((void *)0), P0, ((void *)0))=-3, t1185={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L858] 0 pthread_t t1186; [L859] FCALL, FORK 0 pthread_create(&t1186, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1186, ((void *)0), P1, ((void *)0))=-2, t1185={5:0}, t1186={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L860] 0 pthread_t t1187; [L861] FCALL, FORK 0 pthread_create(&t1187, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1187, ((void *)0), P2, ((void *)0))=-1, t1185={5:0}, t1186={6:0}, t1187={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L862] 0 pthread_t t1188; [L863] FCALL, FORK 0 pthread_create(&t1188, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1188, ((void *)0), P3, ((void *)0))=0, t1185={5:0}, t1186={6:0}, t1187={7:0}, t1188={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L772] 2 x$w_buff1 = x$w_buff0 [L773] 2 x$w_buff0 = 2 [L774] 2 x$w_buff1_used = x$w_buff0_used [L775] 2 x$w_buff0_used = (_Bool)1 [L776] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L776] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L777] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L778] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L779] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L780] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L781] 2 x$r_buff1_thd4 = x$r_buff0_thd4 [L782] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L785] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L802] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L805] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L822] 4 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L825] 4 a = 1 [L828] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L831] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L752] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L755] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L758] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L759] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L760] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L761] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L762] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L765] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L767] 1 return 0; [L788] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L789] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L790] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L791] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L792] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L795] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L797] 2 return 0; [L808] 3 x = x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L809] 3 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L810] 3 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L811] 3 x$r_buff0_thd3 = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L812] 3 x$r_buff1_thd3 = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L834] 4 x = x$w_buff0_used && x$r_buff0_thd4 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x) [L835] 4 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$w_buff0_used [L836] 4 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$w_buff1_used [L837] 4 x$r_buff0_thd4 = x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$r_buff0_thd4 [L838] 4 x$r_buff1_thd4 = x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$r_buff1_thd4 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L815] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L817] 3 return 0; [L841] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L843] 4 return 0; [L865] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L867] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L867] RET 0 assume_abort_if_not(main$tmp_guard0) [L869] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L870] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L871] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L872] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L873] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t1185={5:0}, t1186={6:0}, t1187={7:0}, t1188={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] [L876] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L877] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L878] 0 x$flush_delayed = weak$$choice2 [L879] 0 x$mem_tmp = x [L880] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L881] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L882] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L883] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L884] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L885] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L886] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L887] 0 main$tmp_guard1 = !(x == 2 && z == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L888] 0 x = x$flush_delayed ? x$mem_tmp : x [L889] 0 x$flush_delayed = (_Bool)0 [L891] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 861]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 857]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 863]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 859]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 177 locations, 7 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: 34.1s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 885 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 747 mSDsluCounter, 179 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 95 mSDsCounter, 166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1766 IncrementalHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 166 mSolverCounterUnsat, 84 mSDtfsCounter, 1766 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1090occurred in iteration=12, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 244 ConstructedInterpolants, 0 QuantifiedInterpolants, 1693 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 19:07:52,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993528b7-27ae-4db1-badb-ef854861756d/bin/uautomizer-uyxdKDjOR8/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE