./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:51:18,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:51:18,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:51:18,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:51:18,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:51:18,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:51:18,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:51:18,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:51:18,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:51:18,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:51:18,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:51:18,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:51:18,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:51:18,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:51:18,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:51:18,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:51:18,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:51:18,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:51:18,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:51:18,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:51:18,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:51:18,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:51:18,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:51:18,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:51:18,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:51:18,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:51:18,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:51:18,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:51:18,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:51:18,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:51:18,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:51:18,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:51:18,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:51:18,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:51:18,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:51:18,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:51:18,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:51:18,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:51:18,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:51:18,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:51:18,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:51:18,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:51:18,936 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:51:18,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:51:18,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:51:18,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:51:18,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:51:18,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:51:18,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:51:18,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:51:18,940 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:51:18,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:51:18,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:51:18,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:51:18,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:51:18,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:51:18,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:51:18,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:51:18,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:51:18,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:51:18,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:51:18,945 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:51:18,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:51:18,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:51:18,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:51:18,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:51:18,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:51:18,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:51:18,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:51:18,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:51:18,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:51:18,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:51:18,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:51:18,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:51:18,950 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:51:18,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:51:18,951 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_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-11-25 17:51:19,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:51:19,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:51:19,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:51:19,356 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:51:19,357 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:51:19,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-11-25 17:51:22,664 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:51:22,905 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:51:22,906 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-11-25 17:51:22,914 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/data/613d52dc0/b644d6259b3047c4aa9258acb8784879/FLAGe16cc6d75 [2022-11-25 17:51:22,930 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/data/613d52dc0/b644d6259b3047c4aa9258acb8784879 [2022-11-25 17:51:22,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:51:22,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:51:22,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:51:22,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:51:22,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:51:22,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:22" (1/1) ... [2022-11-25 17:51:22,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d70c61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:22, skipping insertion in model container [2022-11-25 17:51:22,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:22" (1/1) ... [2022-11-25 17:51:22,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:51:22,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:51:23,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,241 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,270 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_a2ee07da-b5a5-413c-87c0-983ccc982d66/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-11-25 17:51:23,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:51:23,333 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:51:23,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,355 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,356 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,359 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:51:23,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:51:23,373 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_a2ee07da-b5a5-413c-87c0-983ccc982d66/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-11-25 17:51:23,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:51:23,397 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:51:23,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23 WrapperNode [2022-11-25 17:51:23,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:51:23,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:51:23,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:51:23,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:51:23,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,456 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-11-25 17:51:23,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:51:23,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:51:23,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:51:23,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:51:23,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:51:23,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:51:23,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:51:23,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:51:23,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (1/1) ... [2022-11-25 17:51:23,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:51:23,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:23,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:51:23,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:51:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:51:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:51:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:51:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:51:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:51:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:51:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:51:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-25 17:51:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-25 17:51:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-25 17:51:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-25 17:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:51:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:51:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:51:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:51:23,612 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:51:23,781 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:51:23,784 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:51:24,407 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:51:24,715 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:51:24,716 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 17:51:24,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:24 BoogieIcfgContainer [2022-11-25 17:51:24,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:51:24,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:51:24,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:51:24,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:51:24,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:51:22" (1/3) ... [2022-11-25 17:51:24,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b785036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:24, skipping insertion in model container [2022-11-25 17:51:24,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:23" (2/3) ... [2022-11-25 17:51:24,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b785036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:24, skipping insertion in model container [2022-11-25 17:51:24,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:24" (3/3) ... [2022-11-25 17:51:24,735 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-11-25 17:51:24,745 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:51:24,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:51:24,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:51:24,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:51:24,998 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-25 17:51:25,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 260 transitions, 592 flow [2022-11-25 17:51:25,251 INFO L130 PetriNetUnfolder]: 18/232 cut-off events. [2022-11-25 17:51:25,251 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:51:25,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 232 events. 18/232 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 285 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 200. Up to 3 conditions per place. [2022-11-25 17:51:25,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 260 transitions, 592 flow [2022-11-25 17:51:25,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 223 transitions, 494 flow [2022-11-25 17:51:25,275 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:51:25,303 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 223 transitions, 494 flow [2022-11-25 17:51:25,307 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 223 transitions, 494 flow [2022-11-25 17:51:25,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 223 transitions, 494 flow [2022-11-25 17:51:25,375 INFO L130 PetriNetUnfolder]: 18/223 cut-off events. [2022-11-25 17:51:25,375 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:51:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 223 events. 18/223 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 285 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 200. Up to 3 conditions per place. [2022-11-25 17:51:25,388 INFO L119 LiptonReduction]: Number of co-enabled transitions 7312 [2022-11-25 17:51:34,430 INFO L134 LiptonReduction]: Checked pairs total: 30339 [2022-11-25 17:51:34,430 INFO L136 LiptonReduction]: Total number of compositions: 185 [2022-11-25 17:51:34,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:51:34,452 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;@5d3bc7c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:51:34,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-25 17:51:34,468 INFO L130 PetriNetUnfolder]: 9/64 cut-off events. [2022-11-25 17:51:34,469 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:51:34,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:51:34,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:34,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:51:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:34,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1096993235, now seen corresponding path program 1 times [2022-11-25 17:51:34,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:34,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955370041] [2022-11-25 17:51:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:34,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:35,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:35,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955370041] [2022-11-25 17:51:35,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955370041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:35,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:35,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:51:35,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92200018] [2022-11-25 17:51:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:35,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:51:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:35,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:51:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:51:35,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 449 [2022-11-25 17:51:35,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:35,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:51:35,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 449 [2022-11-25 17:51:35,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:51:40,857 INFO L130 PetriNetUnfolder]: 24447/33499 cut-off events. [2022-11-25 17:51:40,857 INFO L131 PetriNetUnfolder]: For 5024/5024 co-relation queries the response was YES. [2022-11-25 17:51:40,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70275 conditions, 33499 events. 24447/33499 cut-off events. For 5024/5024 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 184038 event pairs, 10465 based on Foata normal form. 1/26000 useless extension candidates. Maximal degree in co-relation 68803. Up to 12303 conditions per place. [2022-11-25 17:51:41,168 INFO L137 encePairwiseOnDemand]: 442/449 looper letters, 109 selfloop transitions, 8 changer transitions 1/138 dead transitions. [2022-11-25 17:51:41,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 138 transitions, 641 flow [2022-11-25 17:51:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:51:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:51:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 967 transitions. [2022-11-25 17:51:41,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5384187082405345 [2022-11-25 17:51:41,197 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 967 transitions. [2022-11-25 17:51:41,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 967 transitions. [2022-11-25 17:51:41,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:51:41,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 967 transitions. [2022-11-25 17:51:41,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:41,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:41,228 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:41,231 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 178 flow. Second operand 4 states and 967 transitions. [2022-11-25 17:51:41,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 138 transitions, 641 flow [2022-11-25 17:51:41,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 138 transitions, 555 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-25 17:51:41,409 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 199 flow [2022-11-25 17:51:41,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2022-11-25 17:51:41,417 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2022-11-25 17:51:41,417 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 199 flow [2022-11-25 17:51:41,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:41,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:51:41,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:41,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:51:41,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:51:41,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:41,420 INFO L85 PathProgramCache]: Analyzing trace with hash 661577485, now seen corresponding path program 2 times [2022-11-25 17:51:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:41,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442944443] [2022-11-25 17:51:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:41,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:41,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:41,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442944443] [2022-11-25 17:51:41,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442944443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:41,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:41,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:51:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552056984] [2022-11-25 17:51:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:41,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:51:41,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:41,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:51:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:51:41,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 449 [2022-11-25 17:51:41,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:41,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:51:41,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 449 [2022-11-25 17:51:41,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:51:47,783 INFO L130 PetriNetUnfolder]: 40211/54983 cut-off events. [2022-11-25 17:51:47,783 INFO L131 PetriNetUnfolder]: For 12316/12316 co-relation queries the response was YES. [2022-11-25 17:51:48,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121237 conditions, 54983 events. 40211/54983 cut-off events. For 12316/12316 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 317516 event pairs, 15979 based on Foata normal form. 1/42642 useless extension candidates. Maximal degree in co-relation 43471. Up to 22845 conditions per place. [2022-11-25 17:51:48,330 INFO L137 encePairwiseOnDemand]: 442/449 looper letters, 115 selfloop transitions, 11 changer transitions 1/147 dead transitions. [2022-11-25 17:51:48,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 147 transitions, 654 flow [2022-11-25 17:51:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:51:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:51:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 969 transitions. [2022-11-25 17:51:48,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5395322939866369 [2022-11-25 17:51:48,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 969 transitions. [2022-11-25 17:51:48,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 969 transitions. [2022-11-25 17:51:48,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:51:48,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 969 transitions. [2022-11-25 17:51:48,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:48,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:48,350 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 449.0) internal successors, (2245), 5 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:48,350 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 199 flow. Second operand 4 states and 969 transitions. [2022-11-25 17:51:48,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 147 transitions, 654 flow [2022-11-25 17:51:48,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:51:48,364 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 278 flow [2022-11-25 17:51:48,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2022-11-25 17:51:48,365 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2022-11-25 17:51:48,366 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 278 flow [2022-11-25 17:51:48,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:48,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:51:48,368 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:48,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:51:48,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:51:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1197743799, now seen corresponding path program 1 times [2022-11-25 17:51:48,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:48,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717724899] [2022-11-25 17:51:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:48,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:48,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717724899] [2022-11-25 17:51:48,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717724899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:48,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:48,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:51:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112880601] [2022-11-25 17:51:48,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:48,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:51:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:48,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:51:48,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:51:48,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 449 [2022-11-25 17:51:48,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 212.8) internal successors, (1064), 5 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:48,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:51:48,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 449 [2022-11-25 17:51:48,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:51:56,129 INFO L130 PetriNetUnfolder]: 52244/71834 cut-off events. [2022-11-25 17:51:56,129 INFO L131 PetriNetUnfolder]: For 35930/35930 co-relation queries the response was YES. [2022-11-25 17:51:56,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170117 conditions, 71834 events. 52244/71834 cut-off events. For 35930/35930 co-relation queries the response was YES. Maximal size of possible extension queue 1809. Compared 435858 event pairs, 32807 based on Foata normal form. 0/56453 useless extension candidates. Maximal degree in co-relation 71559. Up to 50266 conditions per place. [2022-11-25 17:51:56,544 INFO L137 encePairwiseOnDemand]: 443/449 looper letters, 121 selfloop transitions, 5 changer transitions 0/146 dead transitions. [2022-11-25 17:51:56,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 146 transitions, 753 flow [2022-11-25 17:51:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:51:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:51:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1137 transitions. [2022-11-25 17:51:56,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5064587973273942 [2022-11-25 17:51:56,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1137 transitions. [2022-11-25 17:51:56,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1137 transitions. [2022-11-25 17:51:56,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:51:56,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1137 transitions. [2022-11-25 17:51:56,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:56,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:56,578 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:56,578 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 278 flow. Second operand 5 states and 1137 transitions. [2022-11-25 17:51:56,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 146 transitions, 753 flow [2022-11-25 17:51:56,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 146 transitions, 749 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-25 17:51:56,618 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 324 flow [2022-11-25 17:51:56,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2022-11-25 17:51:56,620 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2022-11-25 17:51:56,621 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 324 flow [2022-11-25 17:51:56,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 212.8) internal successors, (1064), 5 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:56,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:51:56,622 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:51:56,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:51:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash 665812839, now seen corresponding path program 1 times [2022-11-25 17:51:56,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:56,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766718231] [2022-11-25 17:51:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:56,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:56,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:56,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766718231] [2022-11-25 17:51:56,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766718231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:56,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:56,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:51:56,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419719018] [2022-11-25 17:51:56,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:56,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:51:56,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:56,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:51:56,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:51:57,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 449 [2022-11-25 17:51:57,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 214.8) internal successors, (1074), 5 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:57,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:51:57,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 449 [2022-11-25 17:51:57,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:52:02,862 INFO L130 PetriNetUnfolder]: 42319/58294 cut-off events. [2022-11-25 17:52:02,862 INFO L131 PetriNetUnfolder]: For 35011/35011 co-relation queries the response was YES. [2022-11-25 17:52:03,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143589 conditions, 58294 events. 42319/58294 cut-off events. For 35011/35011 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 347301 event pairs, 13926 based on Foata normal form. 0/51750 useless extension candidates. Maximal degree in co-relation 131477. Up to 27598 conditions per place. [2022-11-25 17:52:03,261 INFO L137 encePairwiseOnDemand]: 441/449 looper letters, 96 selfloop transitions, 4 changer transitions 51/171 dead transitions. [2022-11-25 17:52:03,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 171 transitions, 937 flow [2022-11-25 17:52:03,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:52:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:52:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1375 transitions. [2022-11-25 17:52:03,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5103934669636229 [2022-11-25 17:52:03,267 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1375 transitions. [2022-11-25 17:52:03,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1375 transitions. [2022-11-25 17:52:03,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:52:03,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1375 transitions. [2022-11-25 17:52:03,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.16666666666666) internal successors, (1375), 6 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:03,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:03,283 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 449.0) internal successors, (3143), 7 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:03,283 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 324 flow. Second operand 6 states and 1375 transitions. [2022-11-25 17:52:03,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 171 transitions, 937 flow [2022-11-25 17:52:03,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 171 transitions, 933 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:52:03,308 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 324 flow [2022-11-25 17:52:03,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2022-11-25 17:52:03,309 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 13 predicate places. [2022-11-25 17:52:03,309 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 324 flow [2022-11-25 17:52:03,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.8) internal successors, (1074), 5 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:03,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:52:03,311 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:03,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:52:03,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:52:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1809454604, now seen corresponding path program 1 times [2022-11-25 17:52:03,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:03,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947774599] [2022-11-25 17:52:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:03,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:03,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947774599] [2022-11-25 17:52:03,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947774599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:03,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925490526] [2022-11-25 17:52:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:03,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:03,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:03,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:03,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:52:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:03,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:52:03,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:04,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:04,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925490526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:04,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:04,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 17:52:04,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841923122] [2022-11-25 17:52:04,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:04,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:52:04,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:52:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:52:04,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 449 [2022-11-25 17:52:04,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 324 flow. Second operand has 11 states, 11 states have (on average 210.27272727272728) internal successors, (2313), 11 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:04,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:52:04,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 449 [2022-11-25 17:52:04,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:52:11,856 INFO L130 PetriNetUnfolder]: 48484/67887 cut-off events. [2022-11-25 17:52:11,857 INFO L131 PetriNetUnfolder]: For 68920/68920 co-relation queries the response was YES. [2022-11-25 17:52:12,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184766 conditions, 67887 events. 48484/67887 cut-off events. For 68920/68920 co-relation queries the response was YES. Maximal size of possible extension queue 1797. Compared 434388 event pairs, 14347 based on Foata normal form. 3638/67710 useless extension candidates. Maximal degree in co-relation 141471. Up to 27338 conditions per place. [2022-11-25 17:52:12,284 INFO L137 encePairwiseOnDemand]: 441/449 looper letters, 167 selfloop transitions, 8 changer transitions 0/195 dead transitions. [2022-11-25 17:52:12,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 195 transitions, 1157 flow [2022-11-25 17:52:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:52:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:52:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1579 transitions. [2022-11-25 17:52:12,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5023862551702195 [2022-11-25 17:52:12,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1579 transitions. [2022-11-25 17:52:12,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1579 transitions. [2022-11-25 17:52:12,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:52:12,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1579 transitions. [2022-11-25 17:52:12,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.57142857142858) internal successors, (1579), 7 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:12,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:12,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:12,307 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 324 flow. Second operand 7 states and 1579 transitions. [2022-11-25 17:52:12,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 195 transitions, 1157 flow [2022-11-25 17:52:12,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 195 transitions, 1119 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-25 17:52:12,358 INFO L231 Difference]: Finished difference. Result has 91 places, 88 transitions, 388 flow [2022-11-25 17:52:12,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=91, PETRI_TRANSITIONS=88} [2022-11-25 17:52:12,359 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2022-11-25 17:52:12,359 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 88 transitions, 388 flow [2022-11-25 17:52:12,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.27272727272728) internal successors, (2313), 11 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:12,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:52:12,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:12,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:12,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:12,566 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-11-25 17:52:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1700013796, now seen corresponding path program 1 times [2022-11-25 17:52:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:12,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576984081] [2022-11-25 17:52:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:12,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:13,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576984081] [2022-11-25 17:52:13,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576984081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:52:13,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328809468] [2022-11-25 17:52:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:13,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:13,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:13,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:13,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ee07da-b5a5-413c-87c0-983ccc982d66/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:52:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:13,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 17:52:13,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:13,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:52:13,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328809468] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:13,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:52:13,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 17:52:13,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185618642] [2022-11-25 17:52:13,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:13,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:52:13,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:52:13,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:52:13,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 449 [2022-11-25 17:52:13,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 88 transitions, 388 flow. Second operand has 11 states, 11 states have (on average 210.0909090909091) internal successors, (2311), 11 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:52:13,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:52:13,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 449 [2022-11-25 17:52:13,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand