./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c --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_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/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_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/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_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/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 2173db9a2274c43e93688b39a8ab5256e9054c31e7330b4f58c34c545dbb4480 --- 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 12:01:47,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:01:47,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:01:47,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:01:47,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:01:47,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:01:47,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:01:47,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:01:47,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:01:47,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:01:47,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:01:47,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:01:47,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:01:47,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:01:47,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:01:47,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:01:47,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:01:47,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:01:47,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:01:47,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:01:47,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:01:47,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:01:47,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:01:47,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:01:47,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:01:47,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:01:47,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:01:47,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:01:47,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:01:47,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:01:47,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:01:47,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:01:47,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:01:47,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:01:47,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:01:47,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:01:47,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:01:47,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:01:47,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:01:47,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:01:47,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:01:47,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:01:47,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:01:47,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:01:47,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:01:47,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:01:47,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:01:47,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:01:47,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:01:47,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:01:47,448 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:01:47,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:01:47,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:01:47,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:01:47,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:01:47,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:01:47,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:01:47,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:01:47,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:01:47,450 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:01:47,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:01:47,450 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:01:47,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:01:47,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:01:47,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:01:47,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:01:47,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:01:47,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:01:47,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:01:47,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:01:47,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:01:47,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:01:47,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:01:47,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:01:47,453 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:01:47,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:01:47,453 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:01:47,453 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_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2173db9a2274c43e93688b39a8ab5256e9054c31e7330b4f58c34c545dbb4480 [2022-12-13 12:01:47,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:01:47,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:01:47,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:01:47,636 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:01:47,637 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:01:47,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2022-12-13 12:01:50,171 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:01:50,321 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:01:50,321 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2022-12-13 12:01:50,326 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/data/fb850bd3c/ff2ed4c276554eff99f0432068c750fc/FLAGad787e4e8 [2022-12-13 12:01:50,741 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/data/fb850bd3c/ff2ed4c276554eff99f0432068c750fc [2022-12-13 12:01:50,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:01:50,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:01:50,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:01:50,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:01:50,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:01:50,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741c257a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50, skipping insertion in model container [2022-12-13 12:01:50,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:01:50,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:01:50,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:01:50,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:01:50,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:01:50,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:01:50,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:01:50,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:01:50,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:01:50,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:01:50,881 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_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c[2987,3000] [2022-12-13 12:01:50,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:01:50,895 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:01:50,905 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:01:50,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:01:50,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:01:50,907 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:01:50,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:01:50,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:01:50,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:01:50,909 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:01:50,912 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_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c[2987,3000] [2022-12-13 12:01:50,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:01:50,925 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:01:50,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50 WrapperNode [2022-12-13 12:01:50,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:01:50,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:01:50,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:01:50,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:01:50,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,956 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 200 [2022-12-13 12:01:50,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:01:50,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:01:50,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:01:50,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:01:50,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:01:50,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:01:50,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:01:50,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:01:50,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (1/1) ... [2022-12-13 12:01:50,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:01:50,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:51,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:01:51,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:01:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:01:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:01:51,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:01:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:01:51,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:01:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:01:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:01:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:01:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:01:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:01:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:01:51,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:01:51,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:01:51,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:01:51,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:01:51,044 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 12:01:51,132 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:01:51,134 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:01:51,396 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:01:51,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:01:51,502 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 12:01:51,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:01:51 BoogieIcfgContainer [2022-12-13 12:01:51,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:01:51,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:01:51,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:01:51,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:01:51,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:01:50" (1/3) ... [2022-12-13 12:01:51,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fcddc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:01:51, skipping insertion in model container [2022-12-13 12:01:51,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:50" (2/3) ... [2022-12-13 12:01:51,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fcddc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:01:51, skipping insertion in model container [2022-12-13 12:01:51,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:01:51" (3/3) ... [2022-12-13 12:01:51,512 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2022-12-13 12:01:51,519 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:01:51,526 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:01:51,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:01:51,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:01:51,587 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:01:51,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 178 transitions, 372 flow [2022-12-13 12:01:51,666 INFO L130 PetriNetUnfolder]: 13/176 cut-off events. [2022-12-13 12:01:51,666 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:01:51,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 176 events. 13/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-12-13 12:01:51,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 178 transitions, 372 flow [2022-12-13 12:01:51,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 167 transitions, 346 flow [2022-12-13 12:01:51,677 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:01:51,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 167 transitions, 346 flow [2022-12-13 12:01:51,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 167 transitions, 346 flow [2022-12-13 12:01:51,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 167 transitions, 346 flow [2022-12-13 12:01:51,716 INFO L130 PetriNetUnfolder]: 13/167 cut-off events. [2022-12-13 12:01:51,716 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:01:51,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 13/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-12-13 12:01:51,717 INFO L119 LiptonReduction]: Number of co-enabled transitions 500 [2022-12-13 12:01:56,639 INFO L134 LiptonReduction]: Checked pairs total: 811 [2022-12-13 12:01:56,639 INFO L136 LiptonReduction]: Total number of compositions: 176 [2022-12-13 12:01:56,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:01:56,654 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;@15d74d14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:01:56,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 12:01:56,658 INFO L130 PetriNetUnfolder]: 4/18 cut-off events. [2022-12-13 12:01:56,658 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:01:56,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:56,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:56,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:01:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash 83167892, now seen corresponding path program 1 times [2022-12-13 12:01:56,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:56,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340990865] [2022-12-13 12:01:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:57,004 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 12:01:57,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:57,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340990865] [2022-12-13 12:01:57,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340990865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:57,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:57,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:01:57,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176977974] [2022-12-13 12:01:57,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:57,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:57,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:57,053 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 354 [2022-12-13 12:01:57,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:57,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:57,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 354 [2022-12-13 12:01:57,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:57,117 INFO L130 PetriNetUnfolder]: 81/147 cut-off events. [2022-12-13 12:01:57,117 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 12:01:57,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 147 events. 81/147 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 401 event pairs, 24 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 240. Up to 88 conditions per place. [2022-12-13 12:01:57,119 INFO L137 encePairwiseOnDemand]: 350/354 looper letters, 27 selfloop transitions, 3 changer transitions 1/31 dead transitions. [2022-12-13 12:01:57,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 31 transitions, 145 flow [2022-12-13 12:01:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:01:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2022-12-13 12:01:57,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4764595103578154 [2022-12-13 12:01:57,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2022-12-13 12:01:57,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2022-12-13 12:01:57,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:57,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2022-12-13 12:01:57,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 12:01:57,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 0 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 12:01:57,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 0 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 12:01:57,148 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 50 flow. Second operand 3 states and 506 transitions. [2022-12-13 12:01:57,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 31 transitions, 145 flow [2022-12-13 12:01:57,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 31 transitions, 131 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:01:57,152 INFO L231 Difference]: Finished difference. Result has 21 places, 21 transitions, 61 flow [2022-12-13 12:01:57,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=21, PETRI_TRANSITIONS=21} [2022-12-13 12:01:57,155 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2022-12-13 12:01:57,156 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 21 transitions, 61 flow [2022-12-13 12:01:57,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:57,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:57,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:57,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:01:57,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:01:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash 870083924, now seen corresponding path program 1 times [2022-12-13 12:01:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:57,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218886022] [2022-12-13 12:01:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:57,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:57,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218886022] [2022-12-13 12:01:57,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218886022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:57,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:57,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:57,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339684197] [2022-12-13 12:01:57,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:57,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:01:57,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:57,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:01:57,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:01:57,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 354 [2022-12-13 12:01:57,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 21 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 12:01:57,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:57,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 354 [2022-12-13 12:01:57,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:57,367 INFO L130 PetriNetUnfolder]: 102/194 cut-off events. [2022-12-13 12:01:57,367 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 12:01:57,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 194 events. 102/194 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 651 event pairs, 9 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 114. Up to 76 conditions per place. [2022-12-13 12:01:57,369 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 41 selfloop transitions, 6 changer transitions 1/48 dead transitions. [2022-12-13 12:01:57,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 48 transitions, 224 flow [2022-12-13 12:01:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:01:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:01:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 811 transitions. [2022-12-13 12:01:57,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4581920903954802 [2022-12-13 12:01:57,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 811 transitions. [2022-12-13 12:01:57,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 811 transitions. [2022-12-13 12:01:57,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:57,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 811 transitions. [2022-12-13 12:01:57,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 12:01:57,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 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 12:01:57,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 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 12:01:57,377 INFO L175 Difference]: Start difference. First operand has 21 places, 21 transitions, 61 flow. Second operand 5 states and 811 transitions. [2022-12-13 12:01:57,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 48 transitions, 224 flow [2022-12-13 12:01:57,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:01:57,379 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 99 flow [2022-12-13 12:01:57,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2022-12-13 12:01:57,379 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, 5 predicate places. [2022-12-13 12:01:57,379 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 99 flow [2022-12-13 12:01:57,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 12:01:57,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:57,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:57,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:01:57,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:01:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1979955816, now seen corresponding path program 2 times [2022-12-13 12:01:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:57,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23788854] [2022-12-13 12:01:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:57,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:57,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:57,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23788854] [2022-12-13 12:01:57,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23788854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:57,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:57,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:57,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740845624] [2022-12-13 12:01:57,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:57,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:01:57,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:57,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:01:57,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:01:57,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 354 [2022-12-13 12:01:57,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 12:01:57,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:57,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 354 [2022-12-13 12:01:57,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:57,558 INFO L130 PetriNetUnfolder]: 89/165 cut-off events. [2022-12-13 12:01:57,558 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-12-13 12:01:57,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 165 events. 89/165 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 487 event pairs, 15 based on Foata normal form. 6/169 useless extension candidates. Maximal degree in co-relation 192. Up to 120 conditions per place. [2022-12-13 12:01:57,559 INFO L137 encePairwiseOnDemand]: 347/354 looper letters, 26 selfloop transitions, 3 changer transitions 10/39 dead transitions. [2022-12-13 12:01:57,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 227 flow [2022-12-13 12:01:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:01:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:01:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 646 transitions. [2022-12-13 12:01:57,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4562146892655367 [2022-12-13 12:01:57,561 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 646 transitions. [2022-12-13 12:01:57,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 646 transitions. [2022-12-13 12:01:57,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:57,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 646 transitions. [2022-12-13 12:01:57,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 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 12:01:57,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 0 states have call successors, (0), 0 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 12:01:57,564 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 0 states have call successors, (0), 0 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 12:01:57,564 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 99 flow. Second operand 4 states and 646 transitions. [2022-12-13 12:01:57,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 227 flow [2022-12-13 12:01:57,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:01:57,566 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 110 flow [2022-12-13 12:01:57,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-12-13 12:01:57,567 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, 8 predicate places. [2022-12-13 12:01:57,567 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 110 flow [2022-12-13 12:01:57,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 12:01:57,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:57,567 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:57,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:01:57,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:01:57,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash 554481765, now seen corresponding path program 1 times [2022-12-13 12:01:57,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:57,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291379728] [2022-12-13 12:01:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:57,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:57,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:57,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291379728] [2022-12-13 12:01:57,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291379728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:57,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:57,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:57,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283726350] [2022-12-13 12:01:57,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:57,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:01:57,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:01:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:01:57,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 354 [2022-12-13 12:01:57,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 12:01:57,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:57,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 354 [2022-12-13 12:01:57,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:57,736 INFO L130 PetriNetUnfolder]: 98/173 cut-off events. [2022-12-13 12:01:57,737 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2022-12-13 12:01:57,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 173 events. 98/173 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 468 event pairs, 18 based on Foata normal form. 6/177 useless extension candidates. Maximal degree in co-relation 214. Up to 122 conditions per place. [2022-12-13 12:01:57,738 INFO L137 encePairwiseOnDemand]: 348/354 looper letters, 32 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2022-12-13 12:01:57,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 236 flow [2022-12-13 12:01:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:01:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:01:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 798 transitions. [2022-12-13 12:01:57,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45084745762711864 [2022-12-13 12:01:57,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 798 transitions. [2022-12-13 12:01:57,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 798 transitions. [2022-12-13 12:01:57,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:57,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 798 transitions. [2022-12-13 12:01:57,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 0 states have call successors, (0), 0 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 12:01:57,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 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 12:01:57,748 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 354.0) internal successors, (2124), 6 states have internal predecessors, (2124), 0 states have call successors, (0), 0 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 12:01:57,748 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 110 flow. Second operand 5 states and 798 transitions. [2022-12-13 12:01:57,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 236 flow [2022-12-13 12:01:57,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 214 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 12:01:57,750 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 112 flow [2022-12-13 12:01:57,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2022-12-13 12:01:57,750 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, 8 predicate places. [2022-12-13 12:01:57,750 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 112 flow [2022-12-13 12:01:57,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 12:01:57,751 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:57,751 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:57,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:01:57,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:01:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1109204265, now seen corresponding path program 1 times [2022-12-13 12:01:57,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:57,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067359644] [2022-12-13 12:01:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:57,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067359644] [2022-12-13 12:01:57,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067359644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:57,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:57,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:57,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341530090] [2022-12-13 12:01:57,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:57,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:01:57,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:01:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:01:57,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 354 [2022-12-13 12:01:57,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:57,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:57,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 354 [2022-12-13 12:01:57,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:57,944 INFO L130 PetriNetUnfolder]: 102/188 cut-off events. [2022-12-13 12:01:57,944 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2022-12-13 12:01:57,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 188 events. 102/188 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 497 event pairs, 61 based on Foata normal form. 8/192 useless extension candidates. Maximal degree in co-relation 308. Up to 174 conditions per place. [2022-12-13 12:01:57,945 INFO L137 encePairwiseOnDemand]: 349/354 looper letters, 24 selfloop transitions, 2 changer transitions 8/34 dead transitions. [2022-12-13 12:01:57,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 205 flow [2022-12-13 12:01:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:01:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:01:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2022-12-13 12:01:57,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4449152542372881 [2022-12-13 12:01:57,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2022-12-13 12:01:57,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2022-12-13 12:01:57,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:57,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2022-12-13 12:01:57,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 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 12:01:57,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 0 states have call successors, (0), 0 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 12:01:57,949 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 0 states have call successors, (0), 0 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 12:01:57,949 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 112 flow. Second operand 4 states and 630 transitions. [2022-12-13 12:01:57,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 205 flow [2022-12-13 12:01:57,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 193 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 12:01:57,951 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 120 flow [2022-12-13 12:01:57,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-13 12:01:57,951 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2022-12-13 12:01:57,951 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 120 flow [2022-12-13 12:01:57,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:57,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:57,952 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:57,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:01:57,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:01:57,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 93011879, now seen corresponding path program 1 times [2022-12-13 12:01:57,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:57,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25772380] [2022-12-13 12:01:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:01:58,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:58,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25772380] [2022-12-13 12:01:58,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25772380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:58,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:58,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:01:58,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520077897] [2022-12-13 12:01:58,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:58,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:01:58,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:58,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:01:58,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:01:58,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 354 [2022-12-13 12:01:58,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 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 12:01:58,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:58,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 354 [2022-12-13 12:01:58,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:58,134 INFO L130 PetriNetUnfolder]: 99/183 cut-off events. [2022-12-13 12:01:58,134 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-12-13 12:01:58,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 183 events. 99/183 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 488 event pairs, 59 based on Foata normal form. 8/188 useless extension candidates. Maximal degree in co-relation 616. Up to 175 conditions per place. [2022-12-13 12:01:58,135 INFO L137 encePairwiseOnDemand]: 349/354 looper letters, 25 selfloop transitions, 2 changer transitions 6/33 dead transitions. [2022-12-13 12:01:58,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 207 flow [2022-12-13 12:01:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:01:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:01:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 628 transitions. [2022-12-13 12:01:58,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4435028248587571 [2022-12-13 12:01:58,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 628 transitions. [2022-12-13 12:01:58,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 628 transitions. [2022-12-13 12:01:58,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:58,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 628 transitions. [2022-12-13 12:01:58,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:58,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 0 states have call successors, (0), 0 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 12:01:58,139 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 354.0) internal successors, (1770), 5 states have internal predecessors, (1770), 0 states have call successors, (0), 0 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 12:01:58,139 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 120 flow. Second operand 4 states and 628 transitions. [2022-12-13 12:01:58,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 207 flow [2022-12-13 12:01:58,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 199 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 12:01:58,141 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 132 flow [2022-12-13 12:01:58,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2022-12-13 12:01:58,141 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, 13 predicate places. [2022-12-13 12:01:58,141 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 132 flow [2022-12-13 12:01:58,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 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 12:01:58,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:58,142 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 12:01:58,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:01:58,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:01:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:58,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1098155417, now seen corresponding path program 1 times [2022-12-13 12:01:58,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:58,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363707048] [2022-12-13 12:01:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:58,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:01:58,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:58,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363707048] [2022-12-13 12:01:58,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363707048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:58,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:58,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:01:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491065331] [2022-12-13 12:01:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:58,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:58,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 354 [2022-12-13 12:01:58,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:58,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:58,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 354 [2022-12-13 12:01:58,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:58,273 INFO L130 PetriNetUnfolder]: 77/140 cut-off events. [2022-12-13 12:01:58,273 INFO L131 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2022-12-13 12:01:58,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 140 events. 77/140 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 329 event pairs, 19 based on Foata normal form. 4/143 useless extension candidates. Maximal degree in co-relation 487. Up to 123 conditions per place. [2022-12-13 12:01:58,274 INFO L137 encePairwiseOnDemand]: 351/354 looper letters, 26 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2022-12-13 12:01:58,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 198 flow [2022-12-13 12:01:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:01:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-12-13 12:01:58,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4623352165725047 [2022-12-13 12:01:58,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-12-13 12:01:58,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-12-13 12:01:58,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:58,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-12-13 12:01:58,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 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 12:01:58,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 0 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 12:01:58,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 354.0) internal successors, (1416), 4 states have internal predecessors, (1416), 0 states have call successors, (0), 0 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 12:01:58,277 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 132 flow. Second operand 3 states and 491 transitions. [2022-12-13 12:01:58,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 198 flow [2022-12-13 12:01:58,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 186 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-13 12:01:58,279 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 139 flow [2022-12-13 12:01:58,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2022-12-13 12:01:58,279 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, 14 predicate places. [2022-12-13 12:01:58,279 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 139 flow [2022-12-13 12:01:58,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:58,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:58,280 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 12:01:58,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:01:58,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:01:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1399594983, now seen corresponding path program 2 times [2022-12-13 12:01:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:58,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825859128] [2022-12-13 12:01:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:58,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:59,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:59,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825859128] [2022-12-13 12:01:59,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825859128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:59,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059956726] [2022-12-13 12:01:59,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:01:59,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:59,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:59,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:59,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:01:59,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:01:59,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:59,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 68 conjunts are in the unsatisfiable core [2022-12-13 12:02:00,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:02:00,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:02:00,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:02:00,100 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:02:00,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 12:02:00,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:02:00,265 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 12:02:00,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 12:02:00,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 12:02:00,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 12:02:00,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 12:02:00,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 20 [2022-12-13 12:02:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:02:01,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:02,480 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-12-13 12:02:02,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 103 [2022-12-13 12:02:02,589 INFO L321 Elim1Store]: treesize reduction 4, result has 97.4 percent of original size [2022-12-13 12:02:02,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 441 treesize of output 539 [2022-12-13 12:02:02,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:02:02,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 375 treesize of output 399 [2022-12-13 12:02:02,689 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:02:02,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 300 [2022-12-13 12:02:23,261 INFO L321 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-12-13 12:02:23,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 103 [2022-12-13 12:02:23,366 INFO L321 Elim1Store]: treesize reduction 5, result has 96.7 percent of original size [2022-12-13 12:02:23,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 457 treesize of output 550 [2022-12-13 12:02:23,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:02:23,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:02:23,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 294 treesize of output 330 [2022-12-13 12:02:23,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:02:23,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:02:23,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 355 treesize of output 359 [2022-12-13 12:02:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:02:38,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059956726] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:38,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:02:38,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 34 [2022-12-13 12:02:38,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841838524] [2022-12-13 12:02:38,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:38,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 12:02:38,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:38,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 12:02:38,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1120, Unknown=2, NotChecked=0, Total=1260 [2022-12-13 12:02:39,246 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 354 [2022-12-13 12:02:39,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 139 flow. Second operand has 36 states, 36 states have (on average 87.47222222222223) internal successors, (3149), 36 states have internal predecessors, (3149), 0 states have call successors, (0), 0 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 12:02:39,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:02:39,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 354 [2022-12-13 12:02:39,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:02:46,374 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (* c_~q2_front~0 4)) (.cse31 (* c_~q1_front~0 4))) (let ((.cse19 (select |c_#memory_int| c_~q1~0.base)) (.cse5 (+ .cse31 c_~q1~0.offset)) (.cse20 (select |c_#memory_int| c_~q2~0.base)) (.cse32 (+ c_~q2~0.offset .cse11)) (.cse30 (* c_~q1_back~0 4))) (let ((.cse1 (+ .cse30 c_~q1~0.offset)) (.cse15 (not (< c_~q2_back~0 c_~n2~0))) (.cse21 (select .cse20 .cse32)) (.cse6 (+ c_~i~0 1)) (.cse12 (* c_~q2_back~0 4)) (.cse13 (not (<= 0 c_~q1_back~0))) (.cse14 (< |c_ULTIMATE.start_create_fresh_int_array_~i~1#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse16 (not (< c_~q1_back~0 c_~n1~0))) (.cse17 (not (<= 0 c_~q2_back~0))) (.cse18 (select .cse19 .cse5))) (and (= c_~q2~0.offset 0) (= c_~q1~0.offset 0) (or (let ((.cse4 (+ .cse12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse3 (+ .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_157 (Array Int Int)) (v_ArrVal_158 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_157) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_158))) (let ((.cse2 (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse0 (select .cse7 c_~q1~0.base))) (or (not (= c_~j~0 (select .cse0 .cse1))) (< (select .cse2 .cse3) c_~i~0) (not (= c_~i~0 (select .cse2 .cse4))) (< (select .cse0 .cse5) .cse6))))) (forall ((v_ArrVal_157 (Array Int Int)) (v_ArrVal_158 (Array Int Int))) (let ((.cse10 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_157) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_158))) (let ((.cse8 (select .cse10 c_~q1~0.base)) (.cse9 (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (= c_~j~0 (select .cse8 .cse1))) (< (select .cse8 .cse5) c_~i~0) (not (= c_~i~0 (select .cse9 .cse4))) (< (select .cse9 .cse3) .cse6))))))) .cse13 .cse14 .cse15 .cse16 .cse17) (<= c_~j~0 (+ .cse18 1)) (= c_~q1_front~0 0) (< c_~q2_front~0 c_~n2~0) (or (not (= (select .cse19 .cse1) c_~j~0)) .cse13 .cse15 .cse16 .cse17 (not (= c_~i~0 (select .cse20 (+ .cse12 c_~q2~0.offset)))) (and (or (< .cse18 .cse6) (< .cse21 c_~i~0)) (or (< .cse21 .cse6) (< .cse18 c_~i~0)))) (<= 1 c_~N~0) (= .cse21 .cse18) (<= c_~j~0 c_~i~0) (or (let ((.cse24 (+ .cse31 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse25 (+ .cse30 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108| Int)) (or (not (< |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108|) 0)) (forall ((v_ArrVal_155 Int) (v_ArrVal_157 (Array Int Int)) (v_ArrVal_158 (Array Int Int))) (let ((.cse26 (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108| (store (select |c_#memory_int| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108|) 0 v_ArrVal_155)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_157) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_158))) (let ((.cse23 (select .cse26 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse22 (select .cse26 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108|))) (or (< (select .cse22 .cse11) c_~i~0) (< (select .cse23 .cse24) .cse6) (not (= c_~j~0 (select .cse23 .cse25))) (not (= (select .cse22 .cse12) c_~i~0)))))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108| Int)) (or (forall ((v_ArrVal_155 Int) (v_ArrVal_157 (Array Int Int)) (v_ArrVal_158 (Array Int Int))) (let ((.cse29 (store (store (store |c_#memory_int| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108| (store (select |c_#memory_int| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108|) 0 v_ArrVal_155)) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_157) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_158))) (let ((.cse28 (select .cse29 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse27 (select .cse29 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108|))) (or (< (select .cse27 .cse11) .cse6) (< (select .cse28 .cse24) c_~i~0) (not (= c_~j~0 (select .cse28 .cse25))) (not (= (select .cse27 .cse12) c_~i~0)))))) (not (< |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_108|) 0)))))) .cse13 .cse14 .cse16 (< 0 c_~q2_back~0) .cse17) (< c_~i~0 (+ c_~j~0 1)) (<= 0 c_~q2_front~0) (<= .cse32 0) (= .cse18 0))))) is different from false [2022-12-13 12:02:52,219 INFO L130 PetriNetUnfolder]: 441/835 cut-off events. [2022-12-13 12:02:52,219 INFO L131 PetriNetUnfolder]: For 977/977 co-relation queries the response was YES. [2022-12-13 12:02:52,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 835 events. 441/835 cut-off events. For 977/977 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4014 event pairs, 20 based on Foata normal form. 20/850 useless extension candidates. Maximal degree in co-relation 2303. Up to 291 conditions per place. [2022-12-13 12:02:52,223 INFO L137 encePairwiseOnDemand]: 338/354 looper letters, 124 selfloop transitions, 155 changer transitions 32/311 dead transitions. [2022-12-13 12:02:52,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 311 transitions, 2011 flow [2022-12-13 12:02:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-13 12:02:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-13 12:02:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6236 transitions. [2022-12-13 12:02:52,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.25530172766723985 [2022-12-13 12:02:52,234 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6236 transitions. [2022-12-13 12:02:52,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6236 transitions. [2022-12-13 12:02:52,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:02:52,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6236 transitions. [2022-12-13 12:02:52,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 90.3768115942029) internal successors, (6236), 69 states have internal predecessors, (6236), 0 states have call successors, (0), 0 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 12:02:52,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 354.0) internal successors, (24780), 70 states have internal predecessors, (24780), 0 states have call successors, (0), 0 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 12:02:52,270 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 354.0) internal successors, (24780), 70 states have internal predecessors, (24780), 0 states have call successors, (0), 0 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 12:02:52,270 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 139 flow. Second operand 69 states and 6236 transitions. [2022-12-13 12:02:52,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 311 transitions, 2011 flow [2022-12-13 12:02:52,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 311 transitions, 1988 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-12-13 12:02:52,276 INFO L231 Difference]: Finished difference. Result has 122 places, 177 transitions, 1455 flow [2022-12-13 12:02:52,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=1455, PETRI_PLACES=122, PETRI_TRANSITIONS=177} [2022-12-13 12:02:52,276 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, 100 predicate places. [2022-12-13 12:02:52,276 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 177 transitions, 1455 flow [2022-12-13 12:02:52,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 87.47222222222223) internal successors, (3149), 36 states have internal predecessors, (3149), 0 states have call successors, (0), 0 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 12:02:52,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:02:52,277 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 12:02:52,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:02:52,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:52,479 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:02:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1470098401, now seen corresponding path program 3 times [2022-12-13 12:02:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:52,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405810693] [2022-12-13 12:02:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:52,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:02:53,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:53,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405810693] [2022-12-13 12:02:53,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405810693] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:02:53,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79829354] [2022-12-13 12:02:53,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:02:53,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:53,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:02:53,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:02:53,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:02:53,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 12:02:53,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:02:53,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 12:02:53,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:02:53,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 12:02:53,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 12:02:53,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 12:02:54,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:02:54,128 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 12:02:54,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 17 [2022-12-13 12:02:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:02:54,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:54,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:02:54,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 99 [2022-12-13 12:02:55,018 INFO L321 Elim1Store]: treesize reduction 4, result has 96.0 percent of original size [2022-12-13 12:02:55,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1257 treesize of output 1185 [2022-12-13 12:02:55,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:02:55,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1089 treesize of output 1051 [2022-12-13 12:02:55,109 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:02:55,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 963 treesize of output 799 [2022-12-13 12:03:31,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:03:31,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 85 [2022-12-13 12:03:31,036 INFO L321 Elim1Store]: treesize reduction 77, result has 23.8 percent of original size [2022-12-13 12:03:31,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 615 treesize of output 574 [2022-12-13 12:03:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:03:31,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:03:31,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:03:31,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 551 treesize of output 519 [2022-12-13 12:03:31,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:03:31,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:03:31,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:03:31,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 503 treesize of output 423 [2022-12-13 12:03:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:03:31,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79829354] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:03:31,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:03:31,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2022-12-13 12:03:31,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016972849] [2022-12-13 12:03:31,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:03:31,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 12:03:31,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:31,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 12:03:31,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=988, Unknown=17, NotChecked=0, Total=1190 [2022-12-13 12:03:32,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 354 [2022-12-13 12:03:32,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 177 transitions, 1455 flow. Second operand has 35 states, 35 states have (on average 90.51428571428572) internal successors, (3168), 35 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 12:03:32,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:03:32,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 354 [2022-12-13 12:03:32,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:03:43,879 INFO L130 PetriNetUnfolder]: 597/1102 cut-off events. [2022-12-13 12:03:43,879 INFO L131 PetriNetUnfolder]: For 7160/7160 co-relation queries the response was YES. [2022-12-13 12:03:43,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6039 conditions, 1102 events. 597/1102 cut-off events. For 7160/7160 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5541 event pairs, 27 based on Foata normal form. 6/1102 useless extension candidates. Maximal degree in co-relation 5967. Up to 497 conditions per place. [2022-12-13 12:03:43,885 INFO L137 encePairwiseOnDemand]: 341/354 looper letters, 157 selfloop transitions, 183 changer transitions 9/349 dead transitions. [2022-12-13 12:03:43,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 349 transitions, 3477 flow [2022-12-13 12:03:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 12:03:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-13 12:03:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4214 transitions. [2022-12-13 12:03:43,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.2645323289391086 [2022-12-13 12:03:43,891 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4214 transitions. [2022-12-13 12:03:43,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4214 transitions. [2022-12-13 12:03:43,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:03:43,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4214 transitions. [2022-12-13 12:03:43,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 93.64444444444445) internal successors, (4214), 45 states have internal predecessors, (4214), 0 states have call successors, (0), 0 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 12:03:43,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 354.0) internal successors, (16284), 46 states have internal predecessors, (16284), 0 states have call successors, (0), 0 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 12:03:43,910 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 354.0) internal successors, (16284), 46 states have internal predecessors, (16284), 0 states have call successors, (0), 0 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 12:03:43,910 INFO L175 Difference]: Start difference. First operand has 122 places, 177 transitions, 1455 flow. Second operand 45 states and 4214 transitions. [2022-12-13 12:03:43,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 349 transitions, 3477 flow [2022-12-13 12:03:43,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 349 transitions, 2737 flow, removed 347 selfloop flow, removed 9 redundant places. [2022-12-13 12:03:43,934 INFO L231 Difference]: Finished difference. Result has 165 places, 252 transitions, 2007 flow [2022-12-13 12:03:43,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=354, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2007, PETRI_PLACES=165, PETRI_TRANSITIONS=252} [2022-12-13 12:03:43,935 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, 143 predicate places. [2022-12-13 12:03:43,935 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 252 transitions, 2007 flow [2022-12-13 12:03:43,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 90.51428571428572) internal successors, (3168), 35 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 12:03:43,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:03:43,936 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 12:03:43,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 12:03:44,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 12:03:44,138 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 12:03:44,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:44,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2140218497, now seen corresponding path program 4 times [2022-12-13 12:03:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:44,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739647544] [2022-12-13 12:03:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:44,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:03:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:45,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739647544] [2022-12-13 12:03:45,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739647544] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407701845] [2022-12-13 12:03:45,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:03:45,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:45,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:45,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:45,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4e0a31-3fa9-4ddd-9693-57b54fae7323/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:03:45,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:03:45,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:03:45,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-13 12:03:45,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:45,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:03:45,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:03:45,404 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 12:03:45,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 12:03:45,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:03:45,527 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 12:03:45,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 12:03:45,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 12:03:45,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 12:03:45,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 12:03:46,080 INFO L321 Elim1Store]: treesize reduction 27, result has 44.9 percent of original size [2022-12-13 12:03:46,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 38 [2022-12-13 12:03:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:03:46,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:03:47,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:03:47,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 241 treesize of output 157 [2022-12-13 12:03:47,977 INFO L321 Elim1Store]: treesize reduction 9, result has 90.3 percent of original size [2022-12-13 12:03:47,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 26173 treesize of output 24384 [2022-12-13 12:03:48,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:03:48,202 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:03:48,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 24301 treesize of output 23033 [2022-12-13 12:03:48,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:03:48,356 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:03:48,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 22965 treesize of output 17689 [2022-12-13 12:03:48,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:03:48,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:03:48,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 17419 treesize of output 14815 [2022-12-13 12:08:58,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:08:58,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 241 treesize of output 157 [2022-12-13 12:08:58,474 INFO L321 Elim1Store]: treesize reduction 9, result has 90.3 percent of original size [2022-12-13 12:08:58,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 13285 treesize of output 12416 [2022-12-13 12:08:58,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:08:58,636 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:08:58,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 12333 treesize of output 9681 [2022-12-13 12:08:58,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:08:58,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:08:58,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 9479 treesize of output 8867 [2022-12-13 12:08:58,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:08:58,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:08:58,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 8819 treesize of output 7527