./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/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_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/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_a92acdb4-f821-4403-b72a-859bde6ea812/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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:04:37,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:04:37,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:04:37,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:04:37,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:04:37,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:04:37,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:04:37,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:04:37,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:04:37,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:04:37,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:04:37,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:04:37,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:04:37,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:04:37,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:04:37,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:04:37,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:04:37,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:04:37,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:04:37,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:04:37,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:04:37,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:04:37,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:04:37,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:04:37,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:04:37,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:04:37,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:04:37,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:04:37,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:04:37,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:04:37,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:04:37,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:04:37,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:04:37,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:04:37,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:04:37,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:04:37,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:04:37,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:04:37,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:04:37,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:04:37,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:04:37,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:04:37,605 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:04:37,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:04:37,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:04:37,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:04:37,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:04:37,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:04:37,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:04:37,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:04:37,614 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:04:37,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:04:37,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:04:37,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:04:37,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:04:37,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:04:37,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:04:37,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:04:37,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:04:37,616 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:04:37,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:04:37,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:04:37,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:04:37,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:04:37,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:04:37,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:04:37,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:04:37,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:04:37,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:04:37,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:04:37,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:04:37,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:04:37,618 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:04:37,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:04:37,618 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:04:37,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:04:37,619 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:04:37,619 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_a92acdb4-f821-4403-b72a-859bde6ea812/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2022-12-13 18:04:37,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:04:37,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:04:37,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:04:37,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:04:37,825 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:04:37,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-12-13 18:04:40,426 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:04:40,635 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:04:40,635 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/sv-benchmarks/c/pthread-wmm/safe035_power.i [2022-12-13 18:04:40,648 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/data/78d7b6483/12ce64f2bdb846cb92d608e2314ff809/FLAGe011f7f36 [2022-12-13 18:04:40,662 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/data/78d7b6483/12ce64f2bdb846cb92d608e2314ff809 [2022-12-13 18:04:40,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:04:40,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:04:40,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:04:40,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:04:40,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:04:40,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acddcbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:40, skipping insertion in model container [2022-12-13 18:04:40,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:04:40" (1/1) ... [2022-12-13 18:04:40,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:04:40,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:04:40,826 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_a92acdb4-f821-4403-b72a-859bde6ea812/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-12-13 18:04:40,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,945 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,966 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,973 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,975 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,980 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,981 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,983 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,983 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:40,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:40,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:04:41,001 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:04:41,010 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_a92acdb4-f821-4403-b72a-859bde6ea812/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2022-12-13 18:04:41,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:04:41,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:04:41,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:04:41,102 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:04:41,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41 WrapperNode [2022-12-13 18:04:41,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:04:41,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:04:41,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:04:41,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:04:41,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,153 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2022-12-13 18:04:41,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:04:41,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:04:41,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:04:41,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:04:41,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,181 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:04:41,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:04:41,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:04:41,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:04:41,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (1/1) ... [2022-12-13 18:04:41,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:04:41,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:04:41,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:04:41,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:04:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:04:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:04:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:04:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:04:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:04:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 18:04:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 18:04:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 18:04:41,250 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 18:04:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 18:04:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 18:04:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:04:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:04:41,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:04:41,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:04:41,252 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 18:04:41,368 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:04:41,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:04:41,741 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:04:41,874 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:04:41,874 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:04:41,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:04:41 BoogieIcfgContainer [2022-12-13 18:04:41,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:04:41,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:04:41,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:04:41,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:04:41,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:04:40" (1/3) ... [2022-12-13 18:04:41,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381bc236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:04:41, skipping insertion in model container [2022-12-13 18:04:41,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:04:41" (2/3) ... [2022-12-13 18:04:41,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381bc236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:04:41, skipping insertion in model container [2022-12-13 18:04:41,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:04:41" (3/3) ... [2022-12-13 18:04:41,885 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2022-12-13 18:04:41,893 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:04:41,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:04:41,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 18:04:41,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:04:41,945 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:04:41,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 253 flow [2022-12-13 18:04:42,016 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-12-13 18:04:42,016 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:04:42,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-12-13 18:04:42,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 253 flow [2022-12-13 18:04:42,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 116 transitions, 241 flow [2022-12-13 18:04:42,028 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:04:42,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 116 transitions, 241 flow [2022-12-13 18:04:42,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 116 transitions, 241 flow [2022-12-13 18:04:42,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 116 transitions, 241 flow [2022-12-13 18:04:42,070 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2022-12-13 18:04:42,071 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:04:42,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 116 events. 2/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2022-12-13 18:04:42,073 INFO L119 LiptonReduction]: Number of co-enabled transitions 2402 [2022-12-13 18:04:45,888 INFO L134 LiptonReduction]: Checked pairs total: 7064 [2022-12-13 18:04:45,889 INFO L136 LiptonReduction]: Total number of compositions: 103 [2022-12-13 18:04:45,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:04:45,906 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;@30942ba3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:04:45,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 18:04:45,911 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-12-13 18:04:45,911 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:04:45,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:45,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:45,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash 856879083, now seen corresponding path program 1 times [2022-12-13 18:04:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:45,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298681266] [2022-12-13 18:04:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:46,256 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 18:04:46,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:46,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298681266] [2022-12-13 18:04:46,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298681266] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:46,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:46,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:04:46,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411362108] [2022-12-13 18:04:46,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:46,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:04:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:46,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:04:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:04:46,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 222 [2022-12-13 18:04:46,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:46,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:46,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 222 [2022-12-13 18:04:46,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:46,866 INFO L130 PetriNetUnfolder]: 2147/3120 cut-off events. [2022-12-13 18:04:46,867 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-13 18:04:46,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6315 conditions, 3120 events. 2147/3120 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14289 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6304. Up to 2576 conditions per place. [2022-12-13 18:04:46,880 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2022-12-13 18:04:46,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2022-12-13 18:04:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:04:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:04:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2022-12-13 18:04:46,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2022-12-13 18:04:46,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2022-12-13 18:04:46,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2022-12-13 18:04:46,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:46,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2022-12-13 18:04:46,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 18:04:46,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 18:04:46,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 18:04:46,902 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 338 transitions. [2022-12-13 18:04:46,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2022-12-13 18:04:46,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:04:46,906 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2022-12-13 18:04:46,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-12-13 18:04:46,910 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-12-13 18:04:46,910 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2022-12-13 18:04:46,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:46,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:46,911 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:46,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:04:46,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1172854398, now seen corresponding path program 1 times [2022-12-13 18:04:46,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:46,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547527109] [2022-12-13 18:04:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:46,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:47,068 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 18:04:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:47,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547527109] [2022-12-13 18:04:47,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547527109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:47,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:47,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:04:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132821507] [2022-12-13 18:04:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:47,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:04:47,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:04:47,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:04:47,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 222 [2022-12-13 18:04:47,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:47,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:47,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 222 [2022-12-13 18:04:47,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:47,384 INFO L130 PetriNetUnfolder]: 1466/2169 cut-off events. [2022-12-13 18:04:47,384 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-12-13 18:04:47,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4502 conditions, 2169 events. 1466/2169 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9245 event pairs, 698 based on Foata normal form. 90/2258 useless extension candidates. Maximal degree in co-relation 4492. Up to 1189 conditions per place. [2022-12-13 18:04:47,395 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2022-12-13 18:04:47,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2022-12-13 18:04:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:04:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:04:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2022-12-13 18:04:47,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.503003003003003 [2022-12-13 18:04:47,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2022-12-13 18:04:47,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2022-12-13 18:04:47,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:47,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2022-12-13 18:04:47,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:47,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 18:04:47,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 18:04:47,400 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 335 transitions. [2022-12-13 18:04:47,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2022-12-13 18:04:47,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:04:47,402 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 62 flow [2022-12-13 18:04:47,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2022-12-13 18:04:47,402 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-12-13 18:04:47,402 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2022-12-13 18:04:47,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:47,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:47,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:47,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:04:47,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:47,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash -994078376, now seen corresponding path program 1 times [2022-12-13 18:04:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:47,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830952154] [2022-12-13 18:04:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:47,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:48,107 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 18:04:48,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:48,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830952154] [2022-12-13 18:04:48,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830952154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:48,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:48,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:04:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847508435] [2022-12-13 18:04:48,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:48,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:04:48,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:04:48,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:04:48,151 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2022-12-13 18:04:48,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 18:04:48,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:48,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2022-12-13 18:04:48,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:48,941 INFO L130 PetriNetUnfolder]: 2828/4185 cut-off events. [2022-12-13 18:04:48,941 INFO L131 PetriNetUnfolder]: For 226/226 co-relation queries the response was YES. [2022-12-13 18:04:48,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9107 conditions, 4185 events. 2828/4185 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 20641 event pairs, 411 based on Foata normal form. 30/4214 useless extension candidates. Maximal degree in co-relation 9096. Up to 1595 conditions per place. [2022-12-13 18:04:48,954 INFO L137 encePairwiseOnDemand]: 209/222 looper letters, 58 selfloop transitions, 16 changer transitions 0/75 dead transitions. [2022-12-13 18:04:48,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 75 transitions, 320 flow [2022-12-13 18:04:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:04:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:04:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 645 transitions. [2022-12-13 18:04:48,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48423423423423423 [2022-12-13 18:04:48,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 645 transitions. [2022-12-13 18:04:48,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 645 transitions. [2022-12-13 18:04:48,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:48,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 645 transitions. [2022-12-13 18:04:48,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 18:04:48,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 18:04:48,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 18:04:48,961 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 6 states and 645 transitions. [2022-12-13 18:04:48,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 75 transitions, 320 flow [2022-12-13 18:04:48,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:04:48,970 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 173 flow [2022-12-13 18:04:48,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2022-12-13 18:04:48,971 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-12-13 18:04:48,971 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 173 flow [2022-12-13 18:04:48,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 18:04:48,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:48,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:48,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:04:48,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash -996993926, now seen corresponding path program 2 times [2022-12-13 18:04:48,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:48,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90589202] [2022-12-13 18:04:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:48,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:49,506 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 18:04:49,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90589202] [2022-12-13 18:04:49,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90589202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:49,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:49,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:04:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16488773] [2022-12-13 18:04:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:49,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:04:49,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:04:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:04:49,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2022-12-13 18:04:49,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:49,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:49,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2022-12-13 18:04:49,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:50,214 INFO L130 PetriNetUnfolder]: 3103/4596 cut-off events. [2022-12-13 18:04:50,215 INFO L131 PetriNetUnfolder]: For 2641/2641 co-relation queries the response was YES. [2022-12-13 18:04:50,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14405 conditions, 4596 events. 3103/4596 cut-off events. For 2641/2641 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 23440 event pairs, 1877 based on Foata normal form. 30/4625 useless extension candidates. Maximal degree in co-relation 14391. Up to 3868 conditions per place. [2022-12-13 18:04:50,230 INFO L137 encePairwiseOnDemand]: 211/222 looper letters, 43 selfloop transitions, 20 changer transitions 0/64 dead transitions. [2022-12-13 18:04:50,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 413 flow [2022-12-13 18:04:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:04:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2022-12-13 18:04:50,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4720720720720721 [2022-12-13 18:04:50,233 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2022-12-13 18:04:50,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2022-12-13 18:04:50,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:50,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2022-12-13 18:04:50,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 18:04:50,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 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 18:04:50,236 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 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 18:04:50,236 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 173 flow. Second operand 5 states and 524 transitions. [2022-12-13 18:04:50,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 413 flow [2022-12-13 18:04:50,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:04:50,240 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 312 flow [2022-12-13 18:04:50,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2022-12-13 18:04:50,240 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-13 18:04:50,241 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 312 flow [2022-12-13 18:04:50,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:50,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:50,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:50,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:04:50,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:50,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash -842093026, now seen corresponding path program 1 times [2022-12-13 18:04:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:50,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490134950] [2022-12-13 18:04:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:50,453 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 18:04:50,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:50,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490134950] [2022-12-13 18:04:50,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490134950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:50,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:50,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:04:50,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628693635] [2022-12-13 18:04:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:50,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:04:50,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:50,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:04:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:04:50,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 222 [2022-12-13 18:04:50,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:50,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:50,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 222 [2022-12-13 18:04:50,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:51,027 INFO L130 PetriNetUnfolder]: 2301/3636 cut-off events. [2022-12-13 18:04:51,028 INFO L131 PetriNetUnfolder]: For 7025/7025 co-relation queries the response was YES. [2022-12-13 18:04:51,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13131 conditions, 3636 events. 2301/3636 cut-off events. For 7025/7025 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 20084 event pairs, 311 based on Foata normal form. 394/4029 useless extension candidates. Maximal degree in co-relation 13116. Up to 1811 conditions per place. [2022-12-13 18:04:51,038 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 82 selfloop transitions, 4 changer transitions 67/154 dead transitions. [2022-12-13 18:04:51,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 154 transitions, 1289 flow [2022-12-13 18:04:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:04:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:04:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2022-12-13 18:04:51,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2022-12-13 18:04:51,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2022-12-13 18:04:51,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2022-12-13 18:04:51,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:51,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2022-12-13 18:04:51,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:51,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 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 18:04:51,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 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 18:04:51,043 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 312 flow. Second operand 5 states and 552 transitions. [2022-12-13 18:04:51,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 154 transitions, 1289 flow [2022-12-13 18:04:51,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 154 transitions, 1205 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:04:51,047 INFO L231 Difference]: Finished difference. Result has 47 places, 53 transitions, 325 flow [2022-12-13 18:04:51,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=47, PETRI_TRANSITIONS=53} [2022-12-13 18:04:51,048 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2022-12-13 18:04:51,048 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 53 transitions, 325 flow [2022-12-13 18:04:51,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:51,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:51,048 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:51,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:04:51,049 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:51,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:51,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1164111657, now seen corresponding path program 1 times [2022-12-13 18:04:51,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:51,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730911591] [2022-12-13 18:04:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:51,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:52,025 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 18:04:52,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:52,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730911591] [2022-12-13 18:04:52,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730911591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:52,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:52,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:04:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159141692] [2022-12-13 18:04:52,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:52,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:04:52,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:04:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:04:52,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2022-12-13 18:04:52,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 53 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:52,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:52,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2022-12-13 18:04:52,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:52,815 INFO L130 PetriNetUnfolder]: 2227/3648 cut-off events. [2022-12-13 18:04:52,816 INFO L131 PetriNetUnfolder]: For 6436/6436 co-relation queries the response was YES. [2022-12-13 18:04:52,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15119 conditions, 3648 events. 2227/3648 cut-off events. For 6436/6436 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20863 event pairs, 997 based on Foata normal form. 60/3708 useless extension candidates. Maximal degree in co-relation 15101. Up to 2347 conditions per place. [2022-12-13 18:04:52,829 INFO L137 encePairwiseOnDemand]: 211/222 looper letters, 90 selfloop transitions, 17 changer transitions 15/123 dead transitions. [2022-12-13 18:04:52,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 123 transitions, 990 flow [2022-12-13 18:04:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:04:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:04:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 743 transitions. [2022-12-13 18:04:52,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47812097812097815 [2022-12-13 18:04:52,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 743 transitions. [2022-12-13 18:04:52,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 743 transitions. [2022-12-13 18:04:52,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:52,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 743 transitions. [2022-12-13 18:04:52,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.14285714285714) internal successors, (743), 7 states have internal predecessors, (743), 0 states have call successors, (0), 0 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 18:04:52,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 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 18:04:52,835 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 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 18:04:52,835 INFO L175 Difference]: Start difference. First operand has 47 places, 53 transitions, 325 flow. Second operand 7 states and 743 transitions. [2022-12-13 18:04:52,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 123 transitions, 990 flow [2022-12-13 18:04:52,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 123 transitions, 968 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 18:04:52,863 INFO L231 Difference]: Finished difference. Result has 54 places, 69 transitions, 535 flow [2022-12-13 18:04:52,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=54, PETRI_TRANSITIONS=69} [2022-12-13 18:04:52,864 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2022-12-13 18:04:52,864 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 69 transitions, 535 flow [2022-12-13 18:04:52,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:52,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:52,864 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:52,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:04:52,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:52,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1277118871, now seen corresponding path program 1 times [2022-12-13 18:04:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:52,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958893564] [2022-12-13 18:04:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:52,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:53,565 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 18:04:53,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:53,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958893564] [2022-12-13 18:04:53,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958893564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:53,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:53,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:04:53,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478448763] [2022-12-13 18:04:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:53,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:04:53,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:53,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:04:53,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:04:53,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2022-12-13 18:04:53,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 69 transitions, 535 flow. Second operand has 8 states, 8 states have (on average 96.875) internal successors, (775), 8 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 18:04:53,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:53,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2022-12-13 18:04:53,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:54,273 INFO L130 PetriNetUnfolder]: 2219/3652 cut-off events. [2022-12-13 18:04:54,273 INFO L131 PetriNetUnfolder]: For 11451/11451 co-relation queries the response was YES. [2022-12-13 18:04:54,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16696 conditions, 3652 events. 2219/3652 cut-off events. For 11451/11451 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21195 event pairs, 576 based on Foata normal form. 48/3699 useless extension candidates. Maximal degree in co-relation 16673. Up to 2523 conditions per place. [2022-12-13 18:04:54,286 INFO L137 encePairwiseOnDemand]: 211/222 looper letters, 78 selfloop transitions, 42 changer transitions 6/127 dead transitions. [2022-12-13 18:04:54,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 127 transitions, 1185 flow [2022-12-13 18:04:54,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:04:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:04:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 644 transitions. [2022-12-13 18:04:54,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2022-12-13 18:04:54,288 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 644 transitions. [2022-12-13 18:04:54,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 644 transitions. [2022-12-13 18:04:54,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:54,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 644 transitions. [2022-12-13 18:04:54,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 18:04:54,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 18:04:54,291 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 18:04:54,291 INFO L175 Difference]: Start difference. First operand has 54 places, 69 transitions, 535 flow. Second operand 6 states and 644 transitions. [2022-12-13 18:04:54,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 127 transitions, 1185 flow [2022-12-13 18:04:54,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 127 transitions, 1171 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-12-13 18:04:54,309 INFO L231 Difference]: Finished difference. Result has 60 places, 83 transitions, 805 flow [2022-12-13 18:04:54,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=805, PETRI_PLACES=60, PETRI_TRANSITIONS=83} [2022-12-13 18:04:54,310 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-12-13 18:04:54,310 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 83 transitions, 805 flow [2022-12-13 18:04:54,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.875) internal successors, (775), 8 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 18:04:54,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:54,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:54,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:04:54,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash -620213281, now seen corresponding path program 2 times [2022-12-13 18:04:54,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:54,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623628571] [2022-12-13 18:04:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:54,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:54,461 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 18:04:54,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:54,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623628571] [2022-12-13 18:04:54,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623628571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:54,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:54,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:04:54,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318828330] [2022-12-13 18:04:54,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:54,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:04:54,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:54,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:04:54,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:04:54,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 222 [2022-12-13 18:04:54,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 83 transitions, 805 flow. Second operand has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:54,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:54,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 222 [2022-12-13 18:04:54,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:55,056 INFO L130 PetriNetUnfolder]: 1537/2677 cut-off events. [2022-12-13 18:04:55,056 INFO L131 PetriNetUnfolder]: For 13696/13696 co-relation queries the response was YES. [2022-12-13 18:04:55,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13391 conditions, 2677 events. 1537/2677 cut-off events. For 13696/13696 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15756 event pairs, 216 based on Foata normal form. 296/2972 useless extension candidates. Maximal degree in co-relation 13365. Up to 1142 conditions per place. [2022-12-13 18:04:55,069 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 140 selfloop transitions, 7 changer transitions 82/230 dead transitions. [2022-12-13 18:04:55,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 230 transitions, 2745 flow [2022-12-13 18:04:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:04:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:04:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 664 transitions. [2022-12-13 18:04:55,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2022-12-13 18:04:55,071 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 664 transitions. [2022-12-13 18:04:55,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 664 transitions. [2022-12-13 18:04:55,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:55,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 664 transitions. [2022-12-13 18:04:55,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.66666666666667) internal successors, (664), 6 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:55,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 18:04:55,074 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 18:04:55,074 INFO L175 Difference]: Start difference. First operand has 60 places, 83 transitions, 805 flow. Second operand 6 states and 664 transitions. [2022-12-13 18:04:55,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 230 transitions, 2745 flow [2022-12-13 18:04:55,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 230 transitions, 2379 flow, removed 112 selfloop flow, removed 4 redundant places. [2022-12-13 18:04:55,089 INFO L231 Difference]: Finished difference. Result has 64 places, 78 transitions, 679 flow [2022-12-13 18:04:55,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=64, PETRI_TRANSITIONS=78} [2022-12-13 18:04:55,090 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2022-12-13 18:04:55,090 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 78 transitions, 679 flow [2022-12-13 18:04:55,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:55,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:55,090 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:55,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:04:55,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:55,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1001472601, now seen corresponding path program 1 times [2022-12-13 18:04:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:55,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895895457] [2022-12-13 18:04:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:56,006 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 18:04:56,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:56,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895895457] [2022-12-13 18:04:56,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895895457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:56,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:56,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:04:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924636795] [2022-12-13 18:04:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:56,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:04:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:04:56,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:04:56,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2022-12-13 18:04:56,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 78 transitions, 679 flow. Second operand has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 0 states have call successors, (0), 0 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 18:04:56,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:56,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2022-12-13 18:04:56,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:56,595 INFO L130 PetriNetUnfolder]: 1184/2144 cut-off events. [2022-12-13 18:04:56,595 INFO L131 PetriNetUnfolder]: For 7819/7819 co-relation queries the response was YES. [2022-12-13 18:04:56,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10630 conditions, 2144 events. 1184/2144 cut-off events. For 7819/7819 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12420 event pairs, 274 based on Foata normal form. 12/2156 useless extension candidates. Maximal degree in co-relation 10601. Up to 1179 conditions per place. [2022-12-13 18:04:56,603 INFO L137 encePairwiseOnDemand]: 209/222 looper letters, 66 selfloop transitions, 33 changer transitions 38/138 dead transitions. [2022-12-13 18:04:56,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 138 transitions, 1412 flow [2022-12-13 18:04:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:04:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:04:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 846 transitions. [2022-12-13 18:04:56,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2022-12-13 18:04:56,605 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 846 transitions. [2022-12-13 18:04:56,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 846 transitions. [2022-12-13 18:04:56,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:56,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 846 transitions. [2022-12-13 18:04:56,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.75) internal successors, (846), 8 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 18:04:56,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 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 18:04:56,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 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 18:04:56,608 INFO L175 Difference]: Start difference. First operand has 64 places, 78 transitions, 679 flow. Second operand 8 states and 846 transitions. [2022-12-13 18:04:56,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 138 transitions, 1412 flow [2022-12-13 18:04:56,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 138 transitions, 1301 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-12-13 18:04:56,632 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 704 flow [2022-12-13 18:04:56,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=704, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2022-12-13 18:04:56,633 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2022-12-13 18:04:56,633 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 704 flow [2022-12-13 18:04:56,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 0 states have call successors, (0), 0 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 18:04:56,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:56,634 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:56,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:04:56,634 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1355079781, now seen corresponding path program 2 times [2022-12-13 18:04:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:56,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321262258] [2022-12-13 18:04:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:57,339 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 18:04:57,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:57,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321262258] [2022-12-13 18:04:57,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321262258] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:57,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:57,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:04:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857154975] [2022-12-13 18:04:57,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:57,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:04:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:04:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:04:57,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 222 [2022-12-13 18:04:57,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 704 flow. Second operand has 8 states, 8 states have (on average 96.25) internal successors, (770), 8 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:57,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:57,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 222 [2022-12-13 18:04:57,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:58,003 INFO L130 PetriNetUnfolder]: 1104/2104 cut-off events. [2022-12-13 18:04:58,003 INFO L131 PetriNetUnfolder]: For 7524/7524 co-relation queries the response was YES. [2022-12-13 18:04:58,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10150 conditions, 2104 events. 1104/2104 cut-off events. For 7524/7524 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12733 event pairs, 223 based on Foata normal form. 23/2126 useless extension candidates. Maximal degree in co-relation 10119. Up to 917 conditions per place. [2022-12-13 18:04:58,009 INFO L137 encePairwiseOnDemand]: 211/222 looper letters, 55 selfloop transitions, 30 changer transitions 52/138 dead transitions. [2022-12-13 18:04:58,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 1497 flow [2022-12-13 18:04:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:04:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:04:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 730 transitions. [2022-12-13 18:04:58,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4697554697554698 [2022-12-13 18:04:58,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 730 transitions. [2022-12-13 18:04:58,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 730 transitions. [2022-12-13 18:04:58,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:58,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 730 transitions. [2022-12-13 18:04:58,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.28571428571429) internal successors, (730), 7 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:58,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 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 18:04:58,014 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 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 18:04:58,014 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 704 flow. Second operand 7 states and 730 transitions. [2022-12-13 18:04:58,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 1497 flow [2022-12-13 18:04:58,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 138 transitions, 1397 flow, removed 38 selfloop flow, removed 3 redundant places. [2022-12-13 18:04:58,034 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 695 flow [2022-12-13 18:04:58,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=695, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2022-12-13 18:04:58,035 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2022-12-13 18:04:58,035 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 695 flow [2022-12-13 18:04:58,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.25) internal successors, (770), 8 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:58,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:58,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:58,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:04:58,036 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1064500493, now seen corresponding path program 3 times [2022-12-13 18:04:58,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:58,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007727255] [2022-12-13 18:04:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:58,277 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 18:04:58,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:58,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007727255] [2022-12-13 18:04:58,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007727255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:58,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:58,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:04:58,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016671626] [2022-12-13 18:04:58,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:58,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:04:58,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:58,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:04:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:04:58,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 222 [2022-12-13 18:04:58,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 695 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:58,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:58,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 222 [2022-12-13 18:04:58,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:58,568 INFO L130 PetriNetUnfolder]: 346/675 cut-off events. [2022-12-13 18:04:58,569 INFO L131 PetriNetUnfolder]: For 3032/3052 co-relation queries the response was YES. [2022-12-13 18:04:58,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 675 events. 346/675 cut-off events. For 3032/3052 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3193 event pairs, 71 based on Foata normal form. 33/704 useless extension candidates. Maximal degree in co-relation 3429. Up to 313 conditions per place. [2022-12-13 18:04:58,571 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 95 selfloop transitions, 10 changer transitions 15/121 dead transitions. [2022-12-13 18:04:58,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 121 transitions, 1556 flow [2022-12-13 18:04:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:04:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:04:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 736 transitions. [2022-12-13 18:04:58,573 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47361647361647363 [2022-12-13 18:04:58,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 736 transitions. [2022-12-13 18:04:58,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 736 transitions. [2022-12-13 18:04:58,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:58,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 736 transitions. [2022-12-13 18:04:58,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.14285714285714) internal successors, (736), 7 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:58,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 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 18:04:58,578 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 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 18:04:58,578 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 695 flow. Second operand 7 states and 736 transitions. [2022-12-13 18:04:58,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 121 transitions, 1556 flow [2022-12-13 18:04:58,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 121 transitions, 1284 flow, removed 20 selfloop flow, removed 15 redundant places. [2022-12-13 18:04:58,588 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 570 flow [2022-12-13 18:04:58,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=570, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2022-12-13 18:04:58,588 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2022-12-13 18:04:58,588 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 570 flow [2022-12-13 18:04:58,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:58,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:58,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:58,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:04:58,589 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash -994691946, now seen corresponding path program 1 times [2022-12-13 18:04:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:58,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177049122] [2022-12-13 18:04:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:04:58,853 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 18:04:58,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:04:58,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177049122] [2022-12-13 18:04:58,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177049122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:04:58,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:04:58,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:04:58,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19577137] [2022-12-13 18:04:58,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:04:58,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:04:58,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:04:58,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:04:58,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:04:58,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 222 [2022-12-13 18:04:58,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 570 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:58,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:04:58,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 222 [2022-12-13 18:04:58,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:04:59,054 INFO L130 PetriNetUnfolder]: 431/798 cut-off events. [2022-12-13 18:04:59,054 INFO L131 PetriNetUnfolder]: For 2862/2862 co-relation queries the response was YES. [2022-12-13 18:04:59,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3948 conditions, 798 events. 431/798 cut-off events. For 2862/2862 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3740 event pairs, 55 based on Foata normal form. 3/801 useless extension candidates. Maximal degree in co-relation 3920. Up to 471 conditions per place. [2022-12-13 18:04:59,057 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 37 selfloop transitions, 1 changer transitions 58/96 dead transitions. [2022-12-13 18:04:59,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 96 transitions, 1024 flow [2022-12-13 18:04:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:04:59,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:04:59,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 435 transitions. [2022-12-13 18:04:59,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2022-12-13 18:04:59,058 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 435 transitions. [2022-12-13 18:04:59,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 435 transitions. [2022-12-13 18:04:59,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:04:59,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 435 transitions. [2022-12-13 18:04:59,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:59,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 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 18:04:59,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 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 18:04:59,060 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 570 flow. Second operand 4 states and 435 transitions. [2022-12-13 18:04:59,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 96 transitions, 1024 flow [2022-12-13 18:04:59,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 952 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-12-13 18:04:59,064 INFO L231 Difference]: Finished difference. Result has 65 places, 32 transitions, 209 flow [2022-12-13 18:04:59,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=65, PETRI_TRANSITIONS=32} [2022-12-13 18:04:59,065 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2022-12-13 18:04:59,065 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 32 transitions, 209 flow [2022-12-13 18:04:59,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:04:59,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:04:59,065 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:04:59,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:04:59,065 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 18:04:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:04:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash 411397442, now seen corresponding path program 2 times [2022-12-13 18:04:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:04:59,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652871651] [2022-12-13 18:04:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:04:59,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:04:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:05:00,286 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 18:05:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:05:00,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652871651] [2022-12-13 18:05:00,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652871651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:05:00,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:05:00,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:05:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789548994] [2022-12-13 18:05:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:05:00,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:05:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:05:00,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:05:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:05:00,338 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 222 [2022-12-13 18:05:00,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 32 transitions, 209 flow. Second operand has 8 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 0 states have call successors, (0), 0 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 18:05:00,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:05:00,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 222 [2022-12-13 18:05:00,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:05:00,524 INFO L130 PetriNetUnfolder]: 128/252 cut-off events. [2022-12-13 18:05:00,524 INFO L131 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-12-13 18:05:00,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 252 events. 128/252 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 793 event pairs, 28 based on Foata normal form. 1/253 useless extension candidates. Maximal degree in co-relation 1204. Up to 124 conditions per place. [2022-12-13 18:05:00,525 INFO L137 encePairwiseOnDemand]: 214/222 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2022-12-13 18:05:00,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 47 transitions, 416 flow [2022-12-13 18:05:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:05:00,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:05:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 593 transitions. [2022-12-13 18:05:00,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4451951951951952 [2022-12-13 18:05:00,528 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 593 transitions. [2022-12-13 18:05:00,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 593 transitions. [2022-12-13 18:05:00,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:05:00,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 593 transitions. [2022-12-13 18:05:00,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 0 states have call successors, (0), 0 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 18:05:00,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 18:05:00,532 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 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 18:05:00,532 INFO L175 Difference]: Start difference. First operand has 65 places, 32 transitions, 209 flow. Second operand 6 states and 593 transitions. [2022-12-13 18:05:00,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 47 transitions, 416 flow [2022-12-13 18:05:00,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 353 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-12-13 18:05:00,534 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2022-12-13 18:05:00,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2022-12-13 18:05:00,535 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-12-13 18:05:00,535 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2022-12-13 18:05:00,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 0 states have call successors, (0), 0 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 18:05:00,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-13 18:05:00,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-13 18:05:00,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-13 18:05:00,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-13 18:05:00,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-12-13 18:05:00,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-13 18:05:00,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:05:00,539 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 18:05:00,544 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:05:00,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:05:00,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:05:00 BasicIcfg [2022-12-13 18:05:00,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:05:00,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:05:00,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:05:00,548 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:05:00,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:04:41" (3/4) ... [2022-12-13 18:05:00,551 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:05:00,555 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 18:05:00,556 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 18:05:00,556 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 18:05:00,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2022-12-13 18:05:00,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-13 18:05:00,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 18:05:00,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:05:00,587 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:05:00,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:05:00,587 INFO L158 Benchmark]: Toolchain (without parser) took 19921.39ms. Allocated memory was 153.1MB in the beginning and 490.7MB in the end (delta: 337.6MB). Free memory was 113.6MB in the beginning and 416.6MB in the end (delta: -303.0MB). Peak memory consumption was 329.3MB. Max. memory is 16.1GB. [2022-12-13 18:05:00,588 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 121.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:05:00,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.67ms. Allocated memory is still 153.1MB. Free memory was 113.2MB in the beginning and 82.1MB in the end (delta: 31.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 18:05:00,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.31ms. Allocated memory is still 153.1MB. Free memory was 82.1MB in the beginning and 78.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 18:05:00,588 INFO L158 Benchmark]: Boogie Preprocessor took 32.79ms. Allocated memory is still 153.1MB. Free memory was 78.7MB in the beginning and 76.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:05:00,589 INFO L158 Benchmark]: RCFGBuilder took 688.87ms. Allocated memory was 153.1MB in the beginning and 192.9MB in the end (delta: 39.8MB). Free memory was 76.2MB in the beginning and 123.9MB in the end (delta: -47.6MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-12-13 18:05:00,589 INFO L158 Benchmark]: TraceAbstraction took 18667.87ms. Allocated memory was 192.9MB in the beginning and 490.7MB in the end (delta: 297.8MB). Free memory was 123.9MB in the beginning and 128.6MB in the end (delta: -4.8MB). Peak memory consumption was 294.1MB. Max. memory is 16.1GB. [2022-12-13 18:05:00,589 INFO L158 Benchmark]: Witness Printer took 39.55ms. Allocated memory is still 490.7MB. Free memory was 128.6MB in the beginning and 416.6MB in the end (delta: -287.9MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2022-12-13 18:05:00,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 121.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.67ms. Allocated memory is still 153.1MB. Free memory was 113.2MB in the beginning and 82.1MB in the end (delta: 31.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.31ms. Allocated memory is still 153.1MB. Free memory was 82.1MB in the beginning and 78.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.79ms. Allocated memory is still 153.1MB. Free memory was 78.7MB in the beginning and 76.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 688.87ms. Allocated memory was 153.1MB in the beginning and 192.9MB in the end (delta: 39.8MB). Free memory was 76.2MB in the beginning and 123.9MB in the end (delta: -47.6MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18667.87ms. Allocated memory was 192.9MB in the beginning and 490.7MB in the end (delta: 297.8MB). Free memory was 123.9MB in the beginning and 128.6MB in the end (delta: -4.8MB). Peak memory consumption was 294.1MB. Max. memory is 16.1GB. * Witness Printer took 39.55ms. Allocated memory is still 490.7MB. Free memory was 128.6MB in the beginning and 416.6MB in the end (delta: -287.9MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 124 PlacesBefore, 36 PlacesAfterwards, 116 TransitionsBefore, 26 TransitionsAfterwards, 2402 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 103 TotalNumberOfCompositions, 7064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3003, independent: 2778, independent conditional: 0, independent unconditional: 2778, dependent: 225, dependent conditional: 0, dependent unconditional: 225, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1270, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3003, independent: 1565, independent conditional: 0, independent unconditional: 1565, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 1270, unknown conditional: 0, unknown unconditional: 1270] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.6s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 643 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 531 mSDsluCounter, 351 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 284 mSDsCounter, 319 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2311 IncrementalHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 319 mSolverCounterUnsat, 67 mSDtfsCounter, 2311 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=805occurred in iteration=7, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 2011 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:05:00,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a92acdb4-f821-4403-b72a-859bde6ea812/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE