./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/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_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/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_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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 14:49:16,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:49:16,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:49:16,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:49:16,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:49:16,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:49:16,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:49:16,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:49:16,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:49:16,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:49:16,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:49:16,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:49:16,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:49:16,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:49:16,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:49:16,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:49:16,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:49:16,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:49:16,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:49:16,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:49:16,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:49:16,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:49:16,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:49:16,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:49:16,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:49:16,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:49:16,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:49:16,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:49:16,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:49:16,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:49:16,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:49:16,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:49:16,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:49:16,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:49:16,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:49:16,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:49:16,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:49:16,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:49:16,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:49:16,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:49:16,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:49:16,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:49:16,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:49:16,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:49:16,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:49:16,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:49:16,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:49:16,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:49:16,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:49:16,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:49:16,745 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:49:16,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:49:16,745 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:49:16,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:49:16,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:49:16,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:49:16,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:49:16,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:49:16,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:49:16,746 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:49:16,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:49:16,747 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:49:16,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:49:16,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:49:16,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:49:16,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:49:16,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:49:16,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:49:16,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:49:16,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:49:16,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:49:16,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:49:16,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:49:16,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:49:16,749 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:49:16,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:49:16,750 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:49:16,750 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_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-12-13 14:49:16,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:49:16,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:49:16,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:49:16,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:49:16,965 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:49:16,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-12-13 14:49:19,600 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:49:19,752 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:49:19,753 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-12-13 14:49:19,758 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/data/cd1bb7dd6/426c06ba61bb4cd282ccce3457a69b0b/FLAG93161c11b [2022-12-13 14:49:19,768 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/data/cd1bb7dd6/426c06ba61bb4cd282ccce3457a69b0b [2022-12-13 14:49:19,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:49:19,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:49:19,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:49:19,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:49:19,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:49:19,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:19,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e421384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19, skipping insertion in model container [2022-12-13 14:49:19,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:19,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:49:19,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:49:19,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,910 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,913 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,914 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,917 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,918 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,919 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,920 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,921 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,922 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,924 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,931 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_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-12-13 14:49:19,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:49:19,946 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:49:19,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,967 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:49:19,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:49:19,974 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_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-12-13 14:49:19,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:49:19,988 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:49:19,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19 WrapperNode [2022-12-13 14:49:19,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:49:19,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:49:19,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:49:19,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:49:19,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,028 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 456 [2022-12-13 14:49:20,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:49:20,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:49:20,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:49:20,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:49:20,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,055 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:49:20,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:49:20,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:49:20,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:49:20,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (1/1) ... [2022-12-13 14:49:20,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:49:20,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:49:20,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:49:20,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:49:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:49:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:49:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:49:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:49:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 14:49:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 14:49:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 14:49:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 14:49:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 14:49:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 14:49:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 14:49:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 14:49:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:49:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:49:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:49:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:49:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:49:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:49:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:49:20,122 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 14:49:20,243 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:49:20,246 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:49:20,701 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:49:20,892 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:49:20,893 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 14:49:20,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:49:20 BoogieIcfgContainer [2022-12-13 14:49:20,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:49:20,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:49:20,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:49:20,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:49:20,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:49:19" (1/3) ... [2022-12-13 14:49:20,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cfec0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:49:20, skipping insertion in model container [2022-12-13 14:49:20,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:49:19" (2/3) ... [2022-12-13 14:49:20,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cfec0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:49:20, skipping insertion in model container [2022-12-13 14:49:20,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:49:20" (3/3) ... [2022-12-13 14:49:20,903 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-12-13 14:49:20,909 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:49:20,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:49:20,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:49:20,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:49:20,977 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 14:49:21,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 328 transitions, 688 flow [2022-12-13 14:49:21,084 INFO L130 PetriNetUnfolder]: 25/324 cut-off events. [2022-12-13 14:49:21,084 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 14:49:21,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 324 events. 25/324 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 184 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 284. Up to 2 conditions per place. [2022-12-13 14:49:21,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 328 transitions, 688 flow [2022-12-13 14:49:21,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 311 transitions, 646 flow [2022-12-13 14:49:21,096 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:49:21,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 311 transitions, 646 flow [2022-12-13 14:49:21,106 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 311 transitions, 646 flow [2022-12-13 14:49:21,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 311 transitions, 646 flow [2022-12-13 14:49:21,154 INFO L130 PetriNetUnfolder]: 25/311 cut-off events. [2022-12-13 14:49:21,155 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 14:49:21,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 311 events. 25/311 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 184 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 284. Up to 2 conditions per place. [2022-12-13 14:49:21,157 INFO L119 LiptonReduction]: Number of co-enabled transitions 2544 [2022-12-13 14:49:30,355 INFO L134 LiptonReduction]: Checked pairs total: 6074 [2022-12-13 14:49:30,355 INFO L136 LiptonReduction]: Total number of compositions: 323 [2022-12-13 14:49:30,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:49:30,372 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;@454ae49e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:49:30,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 14:49:30,382 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2022-12-13 14:49:30,382 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 14:49:30,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:30,383 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] [2022-12-13 14:49:30,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash -328053239, now seen corresponding path program 1 times [2022-12-13 14:49:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:30,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42565735] [2022-12-13 14:49:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:30,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:30,888 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 14:49:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:30,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42565735] [2022-12-13 14:49:30,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42565735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:30,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:30,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:49:30,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727843489] [2022-12-13 14:49:30,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:30,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:49:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:49:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:49:30,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 651 [2022-12-13 14:49:30,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 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 14:49:30,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:30,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 651 [2022-12-13 14:49:30,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:31,373 INFO L130 PetriNetUnfolder]: 2346/3110 cut-off events. [2022-12-13 14:49:31,373 INFO L131 PetriNetUnfolder]: For 234/234 co-relation queries the response was YES. [2022-12-13 14:49:31,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6500 conditions, 3110 events. 2346/3110 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11884 event pairs, 381 based on Foata normal form. 1/2317 useless extension candidates. Maximal degree in co-relation 5552. Up to 2810 conditions per place. [2022-12-13 14:49:31,389 INFO L137 encePairwiseOnDemand]: 645/651 looper letters, 58 selfloop transitions, 5 changer transitions 1/64 dead transitions. [2022-12-13 14:49:31,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 301 flow [2022-12-13 14:49:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:49:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:49:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2022-12-13 14:49:31,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4756784434203789 [2022-12-13 14:49:31,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2022-12-13 14:49:31,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2022-12-13 14:49:31,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:31,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2022-12-13 14:49:31,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 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 14:49:31,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:31,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:31,427 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 106 flow. Second operand 3 states and 929 transitions. [2022-12-13 14:49:31,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 301 flow [2022-12-13 14:49:31,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 271 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 14:49:31,434 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 123 flow [2022-12-13 14:49:31,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2022-12-13 14:49:31,439 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2022-12-13 14:49:31,439 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 123 flow [2022-12-13 14:49:31,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 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 14:49:31,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:31,440 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] [2022-12-13 14:49:31,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:49:31,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2091845307, now seen corresponding path program 1 times [2022-12-13 14:49:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:31,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368141871] [2022-12-13 14:49:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:49:31,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:31,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368141871] [2022-12-13 14:49:31,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368141871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:31,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:31,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:49:31,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377121191] [2022-12-13 14:49:31,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:49:31,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:31,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:49:31,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:49:31,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 651 [2022-12-13 14:49:31,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:49:31,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:31,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 651 [2022-12-13 14:49:31,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:32,313 INFO L130 PetriNetUnfolder]: 2945/4072 cut-off events. [2022-12-13 14:49:32,313 INFO L131 PetriNetUnfolder]: For 972/972 co-relation queries the response was YES. [2022-12-13 14:49:32,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9618 conditions, 4072 events. 2945/4072 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16294 event pairs, 2098 based on Foata normal form. 332/4211 useless extension candidates. Maximal degree in co-relation 3766. Up to 3111 conditions per place. [2022-12-13 14:49:32,326 INFO L137 encePairwiseOnDemand]: 639/651 looper letters, 44 selfloop transitions, 2 changer transitions 59/105 dead transitions. [2022-12-13 14:49:32,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 105 transitions, 489 flow [2022-12-13 14:49:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:49:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:49:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1465 transitions. [2022-12-13 14:49:32,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4500768049155146 [2022-12-13 14:49:32,329 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1465 transitions. [2022-12-13 14:49:32,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1465 transitions. [2022-12-13 14:49:32,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:32,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1465 transitions. [2022-12-13 14:49:32,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 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 14:49:32,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 651.0) internal successors, (3906), 6 states have internal predecessors, (3906), 0 states have call successors, (0), 0 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 14:49:32,335 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 651.0) internal successors, (3906), 6 states have internal predecessors, (3906), 0 states have call successors, (0), 0 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 14:49:32,335 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 123 flow. Second operand 5 states and 1465 transitions. [2022-12-13 14:49:32,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 105 transitions, 489 flow [2022-12-13 14:49:32,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 105 transitions, 480 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:49:32,338 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 160 flow [2022-12-13 14:49:32,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2022-12-13 14:49:32,338 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2022-12-13 14:49:32,338 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 160 flow [2022-12-13 14:49:32,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:49:32,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:32,339 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 14:49:32,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:49:32,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash -696032266, now seen corresponding path program 1 times [2022-12-13 14:49:32,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:32,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055974506] [2022-12-13 14:49:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:49:32,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:32,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055974506] [2022-12-13 14:49:32,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055974506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:32,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:32,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:49:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4544566] [2022-12-13 14:49:32,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:32,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:49:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:32,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:49:32,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:49:32,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 651 [2022-12-13 14:49:32,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 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 14:49:32,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:32,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 651 [2022-12-13 14:49:32,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:33,025 INFO L130 PetriNetUnfolder]: 2852/3829 cut-off events. [2022-12-13 14:49:33,025 INFO L131 PetriNetUnfolder]: For 2964/2964 co-relation queries the response was YES. [2022-12-13 14:49:33,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10441 conditions, 3829 events. 2852/3829 cut-off events. For 2964/2964 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14385 event pairs, 765 based on Foata normal form. 140/3968 useless extension candidates. Maximal degree in co-relation 10426. Up to 2698 conditions per place. [2022-12-13 14:49:33,041 INFO L137 encePairwiseOnDemand]: 648/651 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 14:49:33,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 373 flow [2022-12-13 14:49:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:49:33,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:49:33,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 925 transitions. [2022-12-13 14:49:33,044 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47363031233998976 [2022-12-13 14:49:33,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 925 transitions. [2022-12-13 14:49:33,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 925 transitions. [2022-12-13 14:49:33,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:33,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 925 transitions. [2022-12-13 14:49:33,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 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 14:49:33,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:33,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:33,051 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 160 flow. Second operand 3 states and 925 transitions. [2022-12-13 14:49:33,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 373 flow [2022-12-13 14:49:33,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 359 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 14:49:33,055 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 154 flow [2022-12-13 14:49:33,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2022-12-13 14:49:33,056 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2022-12-13 14:49:33,056 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 154 flow [2022-12-13 14:49:33,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 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 14:49:33,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:33,057 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 14:49:33,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:49:33,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1265086284, now seen corresponding path program 1 times [2022-12-13 14:49:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:33,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315178308] [2022-12-13 14:49:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:49:33,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:33,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315178308] [2022-12-13 14:49:33,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315178308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:33,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:33,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:49:33,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246302593] [2022-12-13 14:49:33,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:33,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:49:33,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:33,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:49:33,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:49:33,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 651 [2022-12-13 14:49:33,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 14:49:33,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:33,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 651 [2022-12-13 14:49:33,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:33,716 INFO L130 PetriNetUnfolder]: 2676/3627 cut-off events. [2022-12-13 14:49:33,716 INFO L131 PetriNetUnfolder]: For 2935/2935 co-relation queries the response was YES. [2022-12-13 14:49:33,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10118 conditions, 3627 events. 2676/3627 cut-off events. For 2935/2935 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13533 event pairs, 689 based on Foata normal form. 132/3755 useless extension candidates. Maximal degree in co-relation 10097. Up to 2700 conditions per place. [2022-12-13 14:49:33,729 INFO L137 encePairwiseOnDemand]: 648/651 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 14:49:33,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 369 flow [2022-12-13 14:49:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:49:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:49:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 920 transitions. [2022-12-13 14:49:33,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47107014848950335 [2022-12-13 14:49:33,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 920 transitions. [2022-12-13 14:49:33,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 920 transitions. [2022-12-13 14:49:33,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:33,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 920 transitions. [2022-12-13 14:49:33,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 14:49:33,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:33,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:33,736 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 154 flow. Second operand 3 states and 920 transitions. [2022-12-13 14:49:33,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 369 flow [2022-12-13 14:49:33,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 351 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 14:49:33,740 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 150 flow [2022-12-13 14:49:33,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2022-12-13 14:49:33,741 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2022-12-13 14:49:33,741 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 150 flow [2022-12-13 14:49:33,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 14:49:33,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:33,742 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 14:49:33,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:49:33,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash -996837673, now seen corresponding path program 1 times [2022-12-13 14:49:33,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:33,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441787339] [2022-12-13 14:49:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:33,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:49:33,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:33,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441787339] [2022-12-13 14:49:33,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441787339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:33,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:33,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:49:33,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244707801] [2022-12-13 14:49:33,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:33,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:49:33,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:33,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:49:33,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:49:33,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 651 [2022-12-13 14:49:33,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 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 14:49:33,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:33,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 651 [2022-12-13 14:49:33,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:34,433 INFO L130 PetriNetUnfolder]: 3151/4250 cut-off events. [2022-12-13 14:49:34,434 INFO L131 PetriNetUnfolder]: For 2502/2502 co-relation queries the response was YES. [2022-12-13 14:49:34,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 4250 events. 3151/4250 cut-off events. For 2502/2502 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15767 event pairs, 896 based on Foata normal form. 104/4350 useless extension candidates. Maximal degree in co-relation 11289. Up to 2724 conditions per place. [2022-12-13 14:49:34,452 INFO L137 encePairwiseOnDemand]: 648/651 looper letters, 61 selfloop transitions, 2 changer transitions 8/71 dead transitions. [2022-12-13 14:49:34,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 361 flow [2022-12-13 14:49:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:49:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:49:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2022-12-13 14:49:34,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4756784434203789 [2022-12-13 14:49:34,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2022-12-13 14:49:34,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2022-12-13 14:49:34,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:34,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2022-12-13 14:49:34,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 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 14:49:34,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:34,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:34,462 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 150 flow. Second operand 3 states and 929 transitions. [2022-12-13 14:49:34,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 361 flow [2022-12-13 14:49:34,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 71 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:49:34,465 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 156 flow [2022-12-13 14:49:34,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2022-12-13 14:49:34,466 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2022-12-13 14:49:34,466 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 156 flow [2022-12-13 14:49:34,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 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 14:49:34,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:34,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:34,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:49:34,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:34,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:34,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1955286102, now seen corresponding path program 1 times [2022-12-13 14:49:34,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:34,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591387721] [2022-12-13 14:49:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:34,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:49:34,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:34,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591387721] [2022-12-13 14:49:34,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591387721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:34,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:34,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:49:34,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312115791] [2022-12-13 14:49:34,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:34,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:49:34,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:49:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:49:34,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 651 [2022-12-13 14:49:34,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 14:49:34,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:34,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 651 [2022-12-13 14:49:34,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:35,529 INFO L130 PetriNetUnfolder]: 5282/7294 cut-off events. [2022-12-13 14:49:35,529 INFO L131 PetriNetUnfolder]: For 4453/4453 co-relation queries the response was YES. [2022-12-13 14:49:35,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19435 conditions, 7294 events. 5282/7294 cut-off events. For 4453/4453 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 31313 event pairs, 4147 based on Foata normal form. 160/7445 useless extension candidates. Maximal degree in co-relation 19411. Up to 4248 conditions per place. [2022-12-13 14:49:35,544 INFO L137 encePairwiseOnDemand]: 642/651 looper letters, 43 selfloop transitions, 4 changer transitions 67/114 dead transitions. [2022-12-13 14:49:35,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 114 transitions, 580 flow [2022-12-13 14:49:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:49:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:49:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1472 transitions. [2022-12-13 14:49:35,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4522273425499232 [2022-12-13 14:49:35,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1472 transitions. [2022-12-13 14:49:35,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1472 transitions. [2022-12-13 14:49:35,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:35,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1472 transitions. [2022-12-13 14:49:35,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 0 states have call successors, (0), 0 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 14:49:35,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 651.0) internal successors, (3906), 6 states have internal predecessors, (3906), 0 states have call successors, (0), 0 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 14:49:35,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 651.0) internal successors, (3906), 6 states have internal predecessors, (3906), 0 states have call successors, (0), 0 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 14:49:35,556 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 156 flow. Second operand 5 states and 1472 transitions. [2022-12-13 14:49:35,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 114 transitions, 580 flow [2022-12-13 14:49:35,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:49:35,560 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 184 flow [2022-12-13 14:49:35,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2022-12-13 14:49:35,560 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2022-12-13 14:49:35,561 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 184 flow [2022-12-13 14:49:35,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 14:49:35,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:35,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:35,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:49:35,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:35,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash -994962993, now seen corresponding path program 1 times [2022-12-13 14:49:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:35,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516010245] [2022-12-13 14:49:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:35,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:49:35,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:35,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516010245] [2022-12-13 14:49:35,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516010245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:35,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:35,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:49:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209257401] [2022-12-13 14:49:35,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:35,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:49:35,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:49:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:49:35,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 651 [2022-12-13 14:49:35,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 280.25) internal successors, (1121), 4 states have internal predecessors, (1121), 0 states have call successors, (0), 0 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 14:49:35,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:35,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 651 [2022-12-13 14:49:35,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:36,512 INFO L130 PetriNetUnfolder]: 3650/5069 cut-off events. [2022-12-13 14:49:36,512 INFO L131 PetriNetUnfolder]: For 3454/3454 co-relation queries the response was YES. [2022-12-13 14:49:36,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13658 conditions, 5069 events. 3650/5069 cut-off events. For 3454/3454 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 20409 event pairs, 2853 based on Foata normal form. 76/5144 useless extension candidates. Maximal degree in co-relation 13626. Up to 4246 conditions per place. [2022-12-13 14:49:36,525 INFO L137 encePairwiseOnDemand]: 642/651 looper letters, 42 selfloop transitions, 6 changer transitions 47/95 dead transitions. [2022-12-13 14:49:36,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 506 flow [2022-12-13 14:49:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:49:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:49:36,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1453 transitions. [2022-12-13 14:49:36,528 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4463901689708141 [2022-12-13 14:49:36,528 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1453 transitions. [2022-12-13 14:49:36,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1453 transitions. [2022-12-13 14:49:36,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:36,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1453 transitions. [2022-12-13 14:49:36,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.6) internal successors, (1453), 5 states have internal predecessors, (1453), 0 states have call successors, (0), 0 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 14:49:36,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 651.0) internal successors, (3906), 6 states have internal predecessors, (3906), 0 states have call successors, (0), 0 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 14:49:36,534 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 651.0) internal successors, (3906), 6 states have internal predecessors, (3906), 0 states have call successors, (0), 0 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 14:49:36,534 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 184 flow. Second operand 5 states and 1453 transitions. [2022-12-13 14:49:36,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 506 flow [2022-12-13 14:49:36,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 95 transitions, 478 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 14:49:36,538 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 198 flow [2022-12-13 14:49:36,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2022-12-13 14:49:36,538 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2022-12-13 14:49:36,538 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 198 flow [2022-12-13 14:49:36,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 280.25) internal successors, (1121), 4 states have internal predecessors, (1121), 0 states have call successors, (0), 0 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 14:49:36,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:36,539 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:36,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:49:36,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash 200985882, now seen corresponding path program 1 times [2022-12-13 14:49:36,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:36,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732276408] [2022-12-13 14:49:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:36,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:49:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:36,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732276408] [2022-12-13 14:49:36,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732276408] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:36,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:36,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:49:36,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702236287] [2022-12-13 14:49:36,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:36,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:49:36,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:49:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:49:36,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 651 [2022-12-13 14:49:36,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 280.5) internal successors, (1122), 4 states have internal predecessors, (1122), 0 states have call successors, (0), 0 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 14:49:36,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:36,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 651 [2022-12-13 14:49:36,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:37,284 INFO L130 PetriNetUnfolder]: 3522/4838 cut-off events. [2022-12-13 14:49:37,285 INFO L131 PetriNetUnfolder]: For 3425/3425 co-relation queries the response was YES. [2022-12-13 14:49:37,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 4838 events. 3522/4838 cut-off events. For 3425/3425 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18905 event pairs, 2708 based on Foata normal form. 56/4893 useless extension candidates. Maximal degree in co-relation 13135. Up to 4244 conditions per place. [2022-12-13 14:49:37,298 INFO L137 encePairwiseOnDemand]: 641/651 looper letters, 41 selfloop transitions, 8 changer transitions 25/74 dead transitions. [2022-12-13 14:49:37,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 426 flow [2022-12-13 14:49:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:49:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:49:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1431 transitions. [2022-12-13 14:49:37,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4396313364055299 [2022-12-13 14:49:37,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1431 transitions. [2022-12-13 14:49:37,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1431 transitions. [2022-12-13 14:49:37,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:37,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1431 transitions. [2022-12-13 14:49:37,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 286.2) internal successors, (1431), 5 states have internal predecessors, (1431), 0 states have call successors, (0), 0 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 14:49:37,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 651.0) internal successors, (3906), 6 states have internal predecessors, (3906), 0 states have call successors, (0), 0 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 14:49:37,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 651.0) internal successors, (3906), 6 states have internal predecessors, (3906), 0 states have call successors, (0), 0 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 14:49:37,306 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 198 flow. Second operand 5 states and 1431 transitions. [2022-12-13 14:49:37,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 426 flow [2022-12-13 14:49:37,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 398 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 14:49:37,308 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 208 flow [2022-12-13 14:49:37,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2022-12-13 14:49:37,309 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2022-12-13 14:49:37,309 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 208 flow [2022-12-13 14:49:37,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 280.5) internal successors, (1122), 4 states have internal predecessors, (1122), 0 states have call successors, (0), 0 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 14:49:37,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:37,310 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:37,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:49:37,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1161326272, now seen corresponding path program 1 times [2022-12-13 14:49:37,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:37,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906761395] [2022-12-13 14:49:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:37,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:49:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:37,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906761395] [2022-12-13 14:49:37,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906761395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:37,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:37,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:49:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246030910] [2022-12-13 14:49:37,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:49:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:49:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:49:37,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 651 [2022-12-13 14:49:37,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 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 14:49:37,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:37,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 651 [2022-12-13 14:49:37,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:37,815 INFO L130 PetriNetUnfolder]: 1883/2543 cut-off events. [2022-12-13 14:49:37,816 INFO L131 PetriNetUnfolder]: For 1868/1868 co-relation queries the response was YES. [2022-12-13 14:49:37,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6969 conditions, 2543 events. 1883/2543 cut-off events. For 1868/1868 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8424 event pairs, 709 based on Foata normal form. 30/2572 useless extension candidates. Maximal degree in co-relation 6934. Up to 2325 conditions per place. [2022-12-13 14:49:37,824 INFO L137 encePairwiseOnDemand]: 648/651 looper letters, 51 selfloop transitions, 2 changer transitions 9/62 dead transitions. [2022-12-13 14:49:37,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 364 flow [2022-12-13 14:49:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:49:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:49:37,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2022-12-13 14:49:37,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4674859190988223 [2022-12-13 14:49:37,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 913 transitions. [2022-12-13 14:49:37,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 913 transitions. [2022-12-13 14:49:37,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:37,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 913 transitions. [2022-12-13 14:49:37,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 14:49:37,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:37,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 651.0) internal successors, (2604), 4 states have internal predecessors, (2604), 0 states have call successors, (0), 0 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 14:49:37,831 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 208 flow. Second operand 3 states and 913 transitions. [2022-12-13 14:49:37,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 364 flow [2022-12-13 14:49:37,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 14:49:37,834 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 204 flow [2022-12-13 14:49:37,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2022-12-13 14:49:37,834 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2022-12-13 14:49:37,835 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 204 flow [2022-12-13 14:49:37,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 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 14:49:37,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:37,835 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:37,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:49:37,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1993960726, now seen corresponding path program 1 times [2022-12-13 14:49:37,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:37,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851236202] [2022-12-13 14:49:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:49:38,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:38,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851236202] [2022-12-13 14:49:38,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851236202] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:49:38,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287729209] [2022-12-13 14:49:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:38,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:49:38,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:49:38,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:49:38,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:49:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:38,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:49:38,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:49:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:49:38,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:49:38,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287729209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:38,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:49:38,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2022-12-13 14:49:38,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231640084] [2022-12-13 14:49:38,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:38,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:49:38,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:38,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:49:38,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:49:38,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 651 [2022-12-13 14:49:38,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 293.4) internal successors, (1467), 5 states have internal predecessors, (1467), 0 states have call successors, (0), 0 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 14:49:38,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:38,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 651 [2022-12-13 14:49:38,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:39,298 INFO L130 PetriNetUnfolder]: 5057/6765 cut-off events. [2022-12-13 14:49:39,298 INFO L131 PetriNetUnfolder]: For 5355/5355 co-relation queries the response was YES. [2022-12-13 14:49:39,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19328 conditions, 6765 events. 5057/6765 cut-off events. For 5355/5355 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26244 event pairs, 1639 based on Foata normal form. 198/6962 useless extension candidates. Maximal degree in co-relation 19295. Up to 2697 conditions per place. [2022-12-13 14:49:39,314 INFO L137 encePairwiseOnDemand]: 644/651 looper letters, 89 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2022-12-13 14:49:39,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 584 flow [2022-12-13 14:49:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:49:39,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:49:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1235 transitions. [2022-12-13 14:49:39,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47427035330261136 [2022-12-13 14:49:39,317 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1235 transitions. [2022-12-13 14:49:39,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1235 transitions. [2022-12-13 14:49:39,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:39,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1235 transitions. [2022-12-13 14:49:39,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 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 14:49:39,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 651.0) internal successors, (3255), 5 states have internal predecessors, (3255), 0 states have call successors, (0), 0 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 14:49:39,322 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 651.0) internal successors, (3255), 5 states have internal predecessors, (3255), 0 states have call successors, (0), 0 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 14:49:39,322 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 204 flow. Second operand 4 states and 1235 transitions. [2022-12-13 14:49:39,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 584 flow [2022-12-13 14:49:39,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 580 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 14:49:39,325 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 300 flow [2022-12-13 14:49:39,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2022-12-13 14:49:39,325 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2022-12-13 14:49:39,325 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 300 flow [2022-12-13 14:49:39,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 293.4) internal successors, (1467), 5 states have internal predecessors, (1467), 0 states have call successors, (0), 0 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 14:49:39,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:39,326 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:39,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:49:39,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 14:49:39,528 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1435435384, now seen corresponding path program 1 times [2022-12-13 14:49:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:39,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755068956] [2022-12-13 14:49:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:39,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:49:39,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:39,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755068956] [2022-12-13 14:49:39,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755068956] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:49:39,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708517991] [2022-12-13 14:49:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:39,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:49:39,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:49:39,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:49:39,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:49:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:39,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:49:39,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:49:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:49:39,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:49:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:49:40,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708517991] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:49:40,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:49:40,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 14:49:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838649341] [2022-12-13 14:49:40,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:49:40,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:49:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:40,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:49:40,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:49:40,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 651 [2022-12-13 14:49:40,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 300 flow. Second operand has 12 states, 12 states have (on average 267.3333333333333) internal successors, (3208), 12 states have internal predecessors, (3208), 0 states have call successors, (0), 0 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 14:49:40,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:40,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 651 [2022-12-13 14:49:40,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:41,232 INFO L130 PetriNetUnfolder]: 5288/7161 cut-off events. [2022-12-13 14:49:41,232 INFO L131 PetriNetUnfolder]: For 10280/10280 co-relation queries the response was YES. [2022-12-13 14:49:41,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23572 conditions, 7161 events. 5288/7161 cut-off events. For 10280/10280 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28334 event pairs, 3732 based on Foata normal form. 16/7175 useless extension candidates. Maximal degree in co-relation 22533. Up to 6765 conditions per place. [2022-12-13 14:49:41,254 INFO L137 encePairwiseOnDemand]: 645/651 looper letters, 57 selfloop transitions, 3 changer transitions 45/105 dead transitions. [2022-12-13 14:49:41,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 672 flow [2022-12-13 14:49:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:49:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:49:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1659 transitions. [2022-12-13 14:49:41,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2022-12-13 14:49:41,257 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1659 transitions. [2022-12-13 14:49:41,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1659 transitions. [2022-12-13 14:49:41,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:41,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1659 transitions. [2022-12-13 14:49:41,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 14:49:41,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 651.0) internal successors, (4557), 7 states have internal predecessors, (4557), 0 states have call successors, (0), 0 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 14:49:41,263 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 651.0) internal successors, (4557), 7 states have internal predecessors, (4557), 0 states have call successors, (0), 0 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 14:49:41,263 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 300 flow. Second operand 6 states and 1659 transitions. [2022-12-13 14:49:41,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 672 flow [2022-12-13 14:49:41,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 105 transitions, 646 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-12-13 14:49:41,273 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 300 flow [2022-12-13 14:49:41,273 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2022-12-13 14:49:41,274 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2022-12-13 14:49:41,274 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 300 flow [2022-12-13 14:49:41,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 267.3333333333333) internal successors, (3208), 12 states have internal predecessors, (3208), 0 states have call successors, (0), 0 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 14:49:41,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:41,275 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:41,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:49:41,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 14:49:41,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2139485082, now seen corresponding path program 2 times [2022-12-13 14:49:41,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:41,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393117768] [2022-12-13 14:49:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:41,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:49:41,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393117768] [2022-12-13 14:49:41,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393117768] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:49:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242770392] [2022-12-13 14:49:41,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:49:41,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:49:41,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:49:41,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:49:41,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:49:42,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:49:42,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:49:42,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:49:42,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:49:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:49:42,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:49:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:49:42,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242770392] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:49:42,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:49:42,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 14:49:42,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004026984] [2022-12-13 14:49:42,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:49:42,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 14:49:42,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:42,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 14:49:42,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:49:42,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 651 [2022-12-13 14:49:42,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 300 flow. Second operand has 18 states, 18 states have (on average 265.8888888888889) internal successors, (4786), 18 states have internal predecessors, (4786), 0 states have call successors, (0), 0 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 14:49:42,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:42,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 651 [2022-12-13 14:49:42,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:43,512 INFO L130 PetriNetUnfolder]: 5372/7294 cut-off events. [2022-12-13 14:49:43,512 INFO L131 PetriNetUnfolder]: For 8527/8527 co-relation queries the response was YES. [2022-12-13 14:49:43,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23035 conditions, 7294 events. 5372/7294 cut-off events. For 8527/8527 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 29022 event pairs, 3740 based on Foata normal form. 28/7320 useless extension candidates. Maximal degree in co-relation 22995. Up to 6765 conditions per place. [2022-12-13 14:49:43,534 INFO L137 encePairwiseOnDemand]: 645/651 looper letters, 57 selfloop transitions, 4 changer transitions 54/115 dead transitions. [2022-12-13 14:49:43,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 115 transitions, 738 flow [2022-12-13 14:49:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:49:43,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 14:49:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2193 transitions. [2022-12-13 14:49:43,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4210829493087558 [2022-12-13 14:49:43,537 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2193 transitions. [2022-12-13 14:49:43,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2193 transitions. [2022-12-13 14:49:43,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:43,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2193 transitions. [2022-12-13 14:49:43,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 0 states have call successors, (0), 0 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 14:49:43,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 651.0) internal successors, (5859), 9 states have internal predecessors, (5859), 0 states have call successors, (0), 0 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 14:49:43,545 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 651.0) internal successors, (5859), 9 states have internal predecessors, (5859), 0 states have call successors, (0), 0 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 14:49:43,545 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 300 flow. Second operand 8 states and 2193 transitions. [2022-12-13 14:49:43,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 115 transitions, 738 flow [2022-12-13 14:49:43,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 115 transitions, 718 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-13 14:49:43,552 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 320 flow [2022-12-13 14:49:43,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=320, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2022-12-13 14:49:43,553 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2022-12-13 14:49:43,553 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 320 flow [2022-12-13 14:49:43,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 265.8888888888889) internal successors, (4786), 18 states have internal predecessors, (4786), 0 states have call successors, (0), 0 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 14:49:43,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:43,554 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:43,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:49:43,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 14:49:43,756 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:43,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1716919356, now seen corresponding path program 3 times [2022-12-13 14:49:43,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:43,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615135038] [2022-12-13 14:49:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:43,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:49:44,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:44,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615135038] [2022-12-13 14:49:44,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615135038] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:49:44,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157671280] [2022-12-13 14:49:44,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:49:44,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:49:44,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:49:44,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:49:44,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:49:44,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 14:49:44,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:49:44,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:49:44,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:49:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:49:44,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:49:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:49:44,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157671280] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:49:44,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:49:44,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2022-12-13 14:49:44,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90612085] [2022-12-13 14:49:44,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:49:44,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:49:44,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:49:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:49:44,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 651 [2022-12-13 14:49:44,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 264.5) internal successors, (3174), 12 states have internal predecessors, (3174), 0 states have call successors, (0), 0 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 14:49:44,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:44,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 651 [2022-12-13 14:49:44,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:48,009 INFO L130 PetriNetUnfolder]: 18348/25227 cut-off events. [2022-12-13 14:49:48,009 INFO L131 PetriNetUnfolder]: For 40173/40173 co-relation queries the response was YES. [2022-12-13 14:49:48,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82255 conditions, 25227 events. 18348/25227 cut-off events. For 40173/40173 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 126581 event pairs, 6024 based on Foata normal form. 1976/27199 useless extension candidates. Maximal degree in co-relation 82208. Up to 6441 conditions per place. [2022-12-13 14:49:48,123 INFO L137 encePairwiseOnDemand]: 641/651 looper letters, 139 selfloop transitions, 14 changer transitions 161/314 dead transitions. [2022-12-13 14:49:48,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 314 transitions, 2029 flow [2022-12-13 14:49:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 14:49:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 14:49:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5672 transitions. [2022-12-13 14:49:48,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4148928388559725 [2022-12-13 14:49:48,134 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5672 transitions. [2022-12-13 14:49:48,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5672 transitions. [2022-12-13 14:49:48,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:48,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5672 transitions. [2022-12-13 14:49:48,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 270.0952380952381) internal successors, (5672), 21 states have internal predecessors, (5672), 0 states have call successors, (0), 0 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 14:49:48,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 651.0) internal successors, (14322), 22 states have internal predecessors, (14322), 0 states have call successors, (0), 0 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 14:49:48,156 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 651.0) internal successors, (14322), 22 states have internal predecessors, (14322), 0 states have call successors, (0), 0 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 14:49:48,156 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 320 flow. Second operand 21 states and 5672 transitions. [2022-12-13 14:49:48,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 314 transitions, 2029 flow [2022-12-13 14:49:48,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 314 transitions, 1937 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-12-13 14:49:48,187 INFO L231 Difference]: Finished difference. Result has 97 places, 67 transitions, 389 flow [2022-12-13 14:49:48,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=389, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2022-12-13 14:49:48,188 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2022-12-13 14:49:48,188 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 389 flow [2022-12-13 14:49:48,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 264.5) internal successors, (3174), 12 states have internal predecessors, (3174), 0 states have call successors, (0), 0 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 14:49:48,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:48,189 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:48,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:49:48,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 14:49:48,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:48,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1592645715, now seen corresponding path program 1 times [2022-12-13 14:49:48,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:48,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351513065] [2022-12-13 14:49:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:49:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:49:48,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:49:48,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351513065] [2022-12-13 14:49:48,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351513065] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:49:48,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:49:48,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:49:48,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565387161] [2022-12-13 14:49:48,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:49:48,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:49:48,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:49:48,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:49:48,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:49:48,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 651 [2022-12-13 14:49:48,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 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 14:49:48,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:49:48,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 651 [2022-12-13 14:49:48,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:49:54,493 INFO L130 PetriNetUnfolder]: 37552/50260 cut-off events. [2022-12-13 14:49:54,493 INFO L131 PetriNetUnfolder]: For 132869/132869 co-relation queries the response was YES. [2022-12-13 14:49:54,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179983 conditions, 50260 events. 37552/50260 cut-off events. For 132869/132869 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 247290 event pairs, 12087 based on Foata normal form. 1340/51598 useless extension candidates. Maximal degree in co-relation 179922. Up to 17334 conditions per place. [2022-12-13 14:49:54,754 INFO L137 encePairwiseOnDemand]: 648/651 looper letters, 134 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2022-12-13 14:49:54,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 139 transitions, 1051 flow [2022-12-13 14:49:54,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:49:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:49:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1235 transitions. [2022-12-13 14:49:54,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47427035330261136 [2022-12-13 14:49:54,757 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1235 transitions. [2022-12-13 14:49:54,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1235 transitions. [2022-12-13 14:49:54,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:49:54,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1235 transitions. [2022-12-13 14:49:54,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 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 14:49:54,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 651.0) internal successors, (3255), 5 states have internal predecessors, (3255), 0 states have call successors, (0), 0 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 14:49:54,761 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 651.0) internal successors, (3255), 5 states have internal predecessors, (3255), 0 states have call successors, (0), 0 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 14:49:54,761 INFO L175 Difference]: Start difference. First operand has 97 places, 67 transitions, 389 flow. Second operand 4 states and 1235 transitions. [2022-12-13 14:49:54,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 139 transitions, 1051 flow [2022-12-13 14:49:54,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 139 transitions, 994 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-12-13 14:49:54,965 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 386 flow [2022-12-13 14:49:54,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=651, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2022-12-13 14:49:54,966 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2022-12-13 14:49:54,966 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 386 flow [2022-12-13 14:49:54,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.2) internal successors, (1471), 5 states have internal predecessors, (1471), 0 states have call successors, (0), 0 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 14:49:54,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:49:54,966 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:49:54,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 14:49:54,966 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 14:49:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:49:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1565475315, now seen corresponding path program 1 times [2022-12-13 14:49:54,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:49:54,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486372526] [2022-12-13 14:49:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:49:54,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:49:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:01,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:01,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486372526] [2022-12-13 14:50:01,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486372526] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:50:01,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256120749] [2022-12-13 14:50:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:01,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:50:01,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:50:01,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:50:01,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb01eb0-0afe-479d-8ea4-da79d6ff785a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:50:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:01,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 110 conjunts are in the unsatisfiable core [2022-12-13 14:50:01,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:50:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:50:03,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:50:13,730 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:50:38,081 WARN L233 SmtUtils]: Spent 24.12s on a formula simplification. DAG size of input: 64 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:51:30,545 WARN L233 SmtUtils]: Spent 52.18s on a formula simplification. DAG size of input: 68 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:51:54,830 WARN L233 SmtUtils]: Spent 24.11s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:52:21,202 WARN L233 SmtUtils]: Spent 26.12s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:53:17,434 WARN L233 SmtUtils]: Spent 55.72s on a formula simplification. DAG size of input: 93 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:54:29,943 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:57:51,484 WARN L233 SmtUtils]: Spent 3.25m on a formula simplification. DAG size of input: 105 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:58:16,692 WARN L233 SmtUtils]: Spent 25.04s on a formula simplification that was a NOOP. DAG size: 1662 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 14:58:16,693 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:58:16,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 351 case distinctions, treesize of input 522 treesize of output 6316